Specification
Title of invention: Composite preform, composite container, composite preform, plastic member and method for manufacturing composite container
Technical field
[0001]
　The present invention relates to a composite container, a composite preform, a plastic member, and a method for manufacturing the composite container.
Background technology
[0002]
　In recent years, plastic bottles have become common as a container for containing a content liquid such as food and drink, and the content liquid is contained in such a plastic bottle.
[0003]
　A plastic bottle containing such a content liquid is manufactured by inserting a preform into a mold and biaxially stretch blow molding.
[0004]
　By the way, in the conventional biaxial stretch blow molding method, for example, a preform containing a single-layer material such as PET or PP, a multi-layer material or a blend material is used to form a container shape. However, in the conventional biaxial stretch blow molding method, it is general that the preform is simply molded into a container shape. Therefore, when the container is given various functions and characteristics (barrier property, heat retaining property, etc.), its means is limited, for example, by changing the material forming the preform. In particular, it is difficult to give different functions and characteristics depending on the part of the container (for example, the body and the bottom).
Prior art documents
Patent documents
[0005]
Patent Document 1: Japanese Patent Laid-Open No. 2009-241526
[0006]
　The present invention has been made in view of the above points, and an object thereof is to provide a composite container, a composite preform, and a plastic member capable of imparting various functions and characteristics to the container. And.
Disclosure of the invention
[0007]
　The composite container according to the present invention includes
　a container body made of a plastic material and
　a plastic member provided on the outer surface of the
　container body, and the container body and the plastic member are integrally expanded by blow molding and are
　made of plastic. The member comprises a colored layer and / or a printed layer that has been printed.
[0008]
　The composite container according to the present invention includes
　a container body made of a plastic material and
　a plastic member provided on the outer surface of the
　container body, and the container body and the plastic member are integrally expanded by blow molding, and the
　container body is expanded. However, it is characterized by comprising a colored layer containing a resin material and a colorant.
[0009]
　In the above aspect, it is preferable that the plastic member has an action of contracting with respect to the container body.
[0010]
　The composite preform according to the present invention includes a preform
　made of a plastic material and
　a plastic member provided so as to surround the outside of the preform, and the
　plastic member is in close contact with the outside of the preform. The
　plastic member comprises a colored layer and/or a printed layer on which printing is performed.
[0011]
　The composite preform according to the present invention includes a preform
　made of a plastic material and
　a plastic member provided so as to surround the outside of the preform, and the
　plastic member is in close contact with the outside of the preform. The
　preform is provided with a colored layer containing a resin material and a colorant.
[0012]
　In the above aspect, it is preferable that the plastic member has a function of contracting with respect to the preform.
[0013]
　The plastic member according to the present invention is
　attached so as to surround the outside of the preform, and is heated integrally with the preform to have the preform and the plastic member adhered to the outside of the preform. A plastic member for producing a container,
　comprising a tubular body portion that covers at least a body portion of a preform, and comprising a
　colored layer and/or a printed layer on which printing is performed. Characterize.
[0014]
　Method of manufacturing a composite container according to the present invention,
　a step of preparing a preform of plastics material,
　comprising: providing a plastic member outside the preform,
　a step of providing a print area on the surface of the plastic member,
　flop The preform and the plastic member are formed by the steps of heating the reform and the plastic member and inserting them into the
　blow molding die , and by performing blow molding on the preform and the plastic member in the blow molding die.
It is characterized by including a step of expanding as a unit .
[0015]
　The method for manufacturing a composite container according to the present invention includes
　a step of preparing a preform made of a plastic material, a step
　of providing a plastic member having a pre-printed area on the surface outside the
　preform, and a preform and plastic. The
　preform and the plastic member are expanded as a unit by the process of heating the member and inserting it into the blow molding die and by performing blow molding on the preform and the plastic member in the blow molding die. a step,
characterized in that it comprises a.
[0016]
　The method for producing a composite container of the present invention 　comprises
　a step of preparing a preform made of a plastic material, a step
of providing a plastic member on the outside of the
　preform, and a blow molding while heating the preform and the plastic member. A step of inserting into a mold and a step
　of expanding the preform and the plastic member as a unit by performing blow molding on the preform and the plastic member in the blow molding mold.
　Providing a printing area on the surface of the plastic member
.
[0017]
　In the above aspect, it is preferable that the print area is formed by the inkjet method.
A brief description of the drawing
[0018]
FIG. 1 is a partial vertical cross-sectional view showing a composite container of the present invention in one embodiment.
FIG. 2 is a horizontal sectional view showing a composite container of the present invention in one embodiment (FIG. II-II sectional view of FIG. 1).
FIG. 3 is a partial vertical cross-sectional view showing the composite container of the present invention in one embodiment.
FIG. 4 is a vertical sectional view showing a composite preform of the present invention in one embodiment.
FIG. 5 is a partial vertical cross-sectional view showing the composite container of the present invention in one embodiment.
FIG. 6 is a partial vertical cross-sectional view showing the labeled composite container of the present invention in one embodiment.
FIG. 7 is a partial vertical cross-sectional view showing the composite container of the present invention in one embodiment.
FIG. 8 is a partial vertical sectional view showing the labeled composite container of the present invention in one embodiment.
FIG. 9 is a vertical cross-sectional view showing the composite preform of the present invention in one embodiment.
10(a) to 10(f) are cross-sectional views showing various printed plastic members.
11 (a) to 11 (d) are schematic views showing an embodiment in which a plastic member is printed.
12 (a) to 12 (d) are perspective views showing various plastic members.
13 (a) to 13 (f) are schematic views showing a method for manufacturing a composite container of the present invention in one embodiment.
14(a) to 14(f) are schematic views showing a method for manufacturing the composite container of the present invention in one embodiment.
15 (a) to 15 (g) are schematic views showing a method for manufacturing a composite container of the present invention in one embodiment.
FIG. 16 is a partial vertical cross-sectional view showing the composite container of the present invention in one embodiment.
FIG. 17 is a vertical sectional view showing a composite preform of the present invention in one embodiment.
18(a) to 18(f) are schematic views showing a method for manufacturing the composite container of the present invention in one embodiment.
FIG. 19 is a partial vertical sectional view showing the composite container of the present invention in one embodiment.
FIG. 20 is a horizontal sectional view showing a composite container according to a second embodiment of the present invention (FIG. XX-XX sectional view of FIG. 11).
FIG. 21 is a vertical sectional view showing a composite preform of the present invention in one embodiment.
22 (a) to 22 (d) are perspective views showing various inner label members and various plastic members.
23(a) to 23(f) are schematic views showing a method for manufacturing the composite container of the present invention in one embodiment.
24 (a) to 24 (f) are schematic views showing a method for manufacturing a composite container of the present invention in one embodiment.
FIG. 25( a) to FIG. 25( g) are schematic views showing a method for manufacturing the composite container of the present invention in one embodiment.
FIG. 26 is a partial vertical cross-sectional view showing the composite container of the present invention in one embodiment.
FIG. 27 is a vertical sectional view showing a modified example of the composite preform of the present invention in one embodiment.
28(a) to (f) are schematic views showing a method for manufacturing the composite container of the present invention in one embodiment.
MODE FOR CARRYING OUT THE INVENTION
[0019]
First Embodiment
　Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. 1 to 18 are views showing a first embodiment of the present invention.
[0020]
(Composite Container 10A)
　First, the outline of the composite container 10A produced by the blow molding method according to the present embodiment will be described with reference to FIGS. 1 and 2.
　In addition, in this specification, "upper" and "lower" mean the upper part and the lower part in the state (FIG. 1) in which the composite container 10A is upright, respectively.
[0021]
　As will be described later, the composite container 10A shown in FIGS. 1 and 2 is biaxially stretched with respect to the composite preform 70 (see FIG. 4) including the preform 10a and the plastic member 40a using a blow molding die 50. It is obtained by integrally expanding the preform 10a of the composite preform 70 and the plastic member 40a by performing blow molding.
　Further, the composite container 10A may have a shape as shown in FIG.
[0022]
　The composite container 10A according to the present invention includes a container body 10 made of a plastic material located inside and a plastic member 40 provided in close contact with the outside of the container body 10.
[0023]
　Of these, the container body 10 includes a mouth portion 11, a neck portion 13 provided below the mouth portion 11, a shoulder portion 12 provided below the neck portion 13, a body portion 20 provided below the shoulder portion 12, and a body. And a bottom portion 30 provided below the portion 20.
[0024]
　On the other hand, the plastic member 40 is closely attached to the outer surface of the container body 10 in a thinly extended state, and is attached to the container body 10 in a state in which it does not easily move or rotate.
[0025]
　Further, in one embodiment, as shown in FIG. 5, a surface protective layer 80 may be provided on the surface of the plastic member 40.
[0026]
　Further, in one embodiment, as shown in FIG. 6, the label 43 may be attached to the container body 10 and / or the plastic member 40.
[0027]
(Container body 10)
　Next, the container body 10 will be described in detail. As described above, the container body 10 has a mouth portion 11, a neck portion 13, a shoulder portion 12, a body portion 20, and a bottom portion 30.
[0028]
　Of these, the mouth portion 11 has a screw portion 14 screwed to a cap (not shown) and a flange portion 17 provided below the screw portion 14. The shape of the mouth portion 11 may be a conventionally known shape.
[0029]
　The neck portion 13 is located between the flange portion 17 and the shoulder portion 12, and has a substantially cylindrical shape having a substantially uniform diameter. Further, the shoulder portion 12 is located between the neck portion 13 and the body portion 20, and has a shape in which the diameter gradually increases from the neck portion 13 side to the body portion 20 side.
[0030]
　Further, the body portion 20 has a cylindrical shape having a substantially uniform diameter as a whole.
　However, the present invention is not limited to this, and the body portion 20 may have a polygonal tubular shape such as a quadrangular tubular shape or an octagonal tubular shape. Alternatively, the body portion 20 may have a tubular shape having a non-uniform horizontal cross section from the upper side to the lower side. Further, in the present embodiment, the body portion 20 has no unevenness and has a substantially flat surface, but the present invention is not limited to this. For example, the body portion 20 may have irregularities such as panels or grooves.
[0031]
　On the other hand, the bottom portion 30 has a recess 31 located at the center and a ground contact portion 32 provided around the recess 31. The shape of the bottom portion 30 is not particularly limited, and may have a conventionally known bottom shape (for example, a petaloid bottom shape, a round bottom shape, or the like).
[0032]
　In one embodiment, the container body 10 comprises a resin material. Further, in one embodiment, the container body 10 includes a coloring layer containing a resin material and a coloring agent.
[0033]
　Examples of the resin material contained in the container body 10 include PE (polyethylene), PP (polypropylene), PET (polyethylene terephthalate), PEN (polyethylene naphthalate), and PC (polycarbonate).
　In addition to these resins, for example, nylon-6, nylon-11, nylon-12, nylon-6,6, nylon-6,10, nylon-6 / 12, nylon-6 / 11, nylon-6 / 9, Nylon-6/6,6, Nylon-6/6,6/6,10, Polymethaxylylene adipamide (MXD-6), Hexamethylene terephthalamide/Hexamethylene isophthalamide copolymer (Nylon-6T It may contain a nylon resin such as / 6I).
　Among these, the container body 10 preferably contains nylon-6, nylon-6,6, MXD-6 and nylon-6 / 6,6 having good gas barrier properties.
　Further, the container body 10 can be made of a polyvinyl alcohol-based resin. The polyvinyl alcohol-based resin is obtained by saponifying a vinyl ester homopolymer or a copolymer of a vinyl ester and another monomer (for example, a copolymer of a vinyl ester and ethylene) using an alkali catalyst or the like. It is the obtained resin. As the vinyl ester, vinyl acetate is mentioned as a typical compound, but other fatty acid vinyl esters such as vinyl propionate and vinyl pivalate may be used. Among the polyvinyl alcohol-based resins, an ethylene-vinyl alcohol copolymer (EVOH) is particularly preferable because it is easy to melt-mold and can exhibit good gas barrier properties even under high humidity.
　Further, the container body 10 can include an ionomer resin.
　Further, the container body 10 may contain a resin material in which the above-mentioned various resins are blended.
　Examples of the blended resin material include a mixture of a thermoplastic resin and a nylon resin.
　Since the container body 10 contains the blended resin material in which the thermoplastic resin and the nylon resin are mixed, the molding stability of the resin material can be improved, and the container body 10 can improve the gas barrier property. Even if the plastic member 40 does not cover the entire container body, it is possible to provide the composite container 10A having excellent gas barrier properties as a whole.
[0034]
　As the colorant, a colorant such as brown, black, green, white, blue or red can be used.
　Further, the colorant may be a pigment or a dye, but from the viewpoint of light resistance, it is preferably a pigment.
　Since the container body 10 contains a colorant, the colored composite container 10A can be obtained even when the plastic member 40 does not contain the colorant.
　Further, since the entire composite container 10A is colored in a predetermined color, visible light in a desired wavelength range can be cut (absorbed or reflected), and the content liquid filled in the composite container 10A by the visible light can be obtained. It is possible to prevent the problem of degeneration.
　Further, when the plastic member 40 contains a colorant, the composite container 10A can be designed in various designs such as using a color different from the color of the colorant contained in the container body 10 and improve the visibility. Can be done.
　In addition, as colorants, light-reflecting pigments such as titanium white, aluminum powder, mica powder, zinc sulfide, zinc oxide, calcium carbonate, kaolin, talc and other white pigments, and light-absorbing pigments such as carbon black and ceramics. When a colored pigment such as black or bone black is contained, in addition to the above effects, the transmittance of visible light of the plastic member 40 after blow molding can be further reduced, and the content to be filled in the composite container 10A. It is possible to prevent changes in the quality of the liquid. The content of the colorant is preferably 0.01 to 10 parts by mass, more preferably 0.1 to 10 parts by mass, and 0.2, with respect to 100 parts by mass of the resin material contained in the colored layer. It is more preferably to 5 parts by mass.
[0035]
　The container body 10 may be composed of a single layer or multiple layers.
　In this case, the main components forming the layers of the innermost surface and the outermost surface may be the same or different.
　Specific layer configurations include, from the innermost surface, those of PET/MXD-6/PET, those of PET/PET+MXD-6/PET, those of PET/EVOH/PET, and the like.
　By forming the intermediate layer from a resin material having gas barrier properties and light-shielding properties such as MXD6, MXD6 + fatty acid salt, PGA (polyglycolic acid), EVOH or PEN, a multi-layer bottle having gas barrier properties and light-shielding properties can be obtained. ..
　At least one of these layers may contain a coloring agent to form a coloring layer.
[0036]
　The thickness of the container body 10 in the body portion 20 is not limited to this, but can be reduced to, for example, about 50 μm to 250 μm. Further, the weight of the container body 10 is not limited to this, but can be, for example, 10 g to 20 g when the capacity is 500 ml. By reducing the wall thickness of the container body 10 in this way, the weight of the container body 10 can be reduced.
[0037]
　In one embodiment, the container body 10 can be manufactured by biaxially stretch blow molding a preform 10a (described later) manufactured by injection molding a resin material or a mixture containing a resin material and a colorant. it can.
　When the container body 10 is composed of a plurality of layers each including a colored layer, the composite container 10 is manufactured by co-injection molding a mixture of a resin material and a colorant and an arbitrary resin material. be able to.
[0038]
　Further, by mixing an inert gas (nitrogen gas, argon gas) with the melt of the thermoplastic resin, a foam preform having a foam cell diameter of 0.5 to 100 μm is formed, and this foam preform is blow molded. By doing so, the container body 10 may be manufactured. Since such a container body 10 has foam cells built therein, it is possible to enhance the light-shielding property of the entire container body 10.
[0039]
　Such a container body 10 may be composed of, for example, a bottle having a full injection volume of 100 mL to 2000 mL. Alternatively, the container body 10 may be a large bottle having a full filling capacity of, for example, 10 L to 60 L.
[0040]
(Plastic Member 40)
　Next, the plastic member 40 will be described.
[0041]
　The plastic member 40 can be obtained by blow molding the plastic member 40a. More specifically, it is obtained by providing a plastic member 40a so as to surround the outside of the preform 10a as described later, bringing it into close contact with the outside of the preform 10a, and then biaxially stretching blow molding together with the preform 10a. be able to.
[0042]
　The plastic member 40 is attached to the outer surface of the container body 10 without being adhered, and is in close contact with the container body 10 so as not to move or rotate.
　The plastic member 40 is thinly stretched on the outer surface of the container body 10 to cover the container body 10. Further, as shown in FIG. 2, the plastic member 40 is provided over the entire circumferential direction so as to surround the container body 10, and has a substantially circular horizontal cross section.
[0043]
　In this case, the plastic member 40 is provided so as to cover the shoulder portion 12, the body portion 20, and the bottom portion 30 of the container body 10, excluding the mouth portion 11 and the neck portion 13. As a result, desired functions and characteristics can be imparted to the shoulder 12, body 20, and bottom 30 of the container body 10.
[0044]
　The plastic member 40 may be provided in the entire area or a part of the container body 10 other than the mouth portion 11.
　For example, the plastic member 40 may be provided so as to cover the entire neck portion 13, the shoulder portion 12, the body portion 20, and the bottom portion 30 of the container body 10 excluding the mouth portion 11.
　Further, for example, the plastic member 40 may be provided so as to cover only the bottom portion 30.
　Further, the number of the plastic member 40 is not limited to one, and a plurality of plastic members 40 may be provided. For example, two plastic members 40 may be provided on the outer surface of the shoulder 12 and the outer surface of the bottom 30, respectively. Further, the plastic member 40 may be composed of a single layer or multiple layers.
[0045]
　The plastic member 40 (40a) may include a resin material.
　For example, PE, PP, PET, PEN, poly-4-methylpentene-1, polystyrene, AS resin, ABS resin, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, polyvinyl alcohol, polyvinyl acetal, polyvinyl butyral, phthalate. Acid diallyl resin, fluorine resin, polymethylmethacrylate, polyacrylic acid, polymethylacrylate, polyacrylonitrile, polyacrylamide, polybutadiene, polybutene-1, polyisoprene, polychloroprene, ethylene propylene rubber, butyl rubber, nitrile rubber, acrylic Rubber, silicone rubber, fluororubber, nylon 6, nylon 6,6, nylon MXD6, aromatic polyamide, polycarbonate, ethylene polyterephthalate, butylene polyterephthalate, ethylene polynaphthaleneate, U polymer, liquid crystal polymer, modified polyphenylene ether, Polyetherketone, polyetheretherketone, unsaturated polyester, alkyd resin, polyimide, polysulfone, polyphenylene sulfide, polyethersulfone, silicone resin, polyurethane, phenol resin, urea resin, polyethylene oxide, polypropylene oxide, polyacetal, epoxy resin, ionomer It may comprise a resin material such as a resin.
　Of these, it is preferable to include a thermoplastic inelastic resin material such as PE, PP, PET, or PEN.
　By including PE, PP and/or PET, the wettability of the layer to be printed is easily improved, and the print quality can be improved.
　Further, by containing PEN, the gas barrier property against oxygen, water vapor, carbon dioxide and carbon dioxide gas, and the light barrier property against ultraviolet rays can be improved, and the permeation of carbon dioxide gas from the inside of the container is further prevented. Can be done.
　Further, the mechanical strength can be improved by including PEN.
　When the plastic member 40a is a single layer, the content of PEN in the plastic member 40a is preferably 20% by mass or more, more preferably 50% by mass or more, still more preferably 50% by mass or more, based on the total mass of the resin material. It is 90 mass% or more. When the plastic member 40a has multiple layers, it is preferably 20% by mass or more, more preferably 50% by mass or more, still more preferably 90% by mass or more, based on the total mass of the resin material contained in the layer containing PEN. Is.
　The plastic member 40 (40a) may include, as a resin material, a copolymer obtained by polymerizing two or more monomer units constituting the above resin. Further, the plastic member 40 (40a) may include two or more of the above-mentioned resin materials.
　Further, by mixing an inert gas (nitrogen gas, argon gas) with the melt of the thermoplastic resin, a foam member having a foam cell diameter of 0.5 to 100 μm is used, and this foam preform is molded. It is possible to improve the light blocking effect.
[0046]
　In one embodiment, the plastic member 40 (40a) may contain an ultraviolet absorber. This ultraviolet absorber may be contained in the coloring layer described later or may be contained in the printing layer.
[0047]
　Examples of the ultraviolet absorber include benzotriazole-based ultraviolet absorbers, triazine-based ultraviolet absorbers, benzophenone-based ultraviolet absorbers and benzoate-based ultraviolet absorbers.
　When the plastic member 40 is made of a single layer, the content of the ultraviolet absorber is preferably 0.01 to 10 parts by mass with respect to 100 parts by mass of the resin material contained in the plastic member 40, preferably 0.1. It is more preferably about 3 parts by mass. When the plastic member 40 is composed of multiple layers, the amount is preferably 0.01 to 10 parts by mass, preferably 0.1 to 10 parts by mass, based on 100 parts by mass of the resin material contained in the layer of the plastic member 40 containing the ultraviolet absorber. It is more preferably 3 parts by mass.
[0048]
　The plastic member 40 preferably has an ultraviolet transmittance of 5% or less, more preferably 3% or less, still more preferably 1% or less.
　Ultraviolet rays refer to light rays having a wavelength of 10 nm to 400 nm. Further, that the transmittance of ultraviolet rays is 5% or less means that the transmittance is 5% or less in the entire wavelength region of ultraviolet rays (10 nm to 400 nm).
　In addition, the transmittance of visible light and ultraviolet light can be measured by a method according to JIS A5759. For example, using a spectrophotometer (UV3100, manufactured by Shimadzu Corporation), measuring at 0.5 nm intervals in the wavelength range of 10 nm to 400 nm to determine the light transmittance of visible light and ultraviolet light. You can
[0049]
　In addition, in one embodiment, the plastic member 40 (40a) may include the same material as the container body 10 (preform 10a).
　In this case, the plastic member 40 having the layer can be arranged mainly in the portion of the composite container 10A whose strength is desired to be increased, and the strength of the portion can be selectively increased. For example, a plastic member 40 may be provided around the shoulder 12 and the bottom 30 of the container body 10 to increase the strength of this portion. Examples of such a material include thermoplastic resins such as PE, PP, PET, PEN, PC, and ionomer resins.
　For example, the container body 10 may include 80% by mass of PET and 20% by mass of PP, and the plastic member 40 as the wall thickness increasing member may include 75% by mass of PET and 25% by mass of PP.
[0050]
　Further, the plastic member 40 (40a) may include a material having a gas barrier property such as an oxygen barrier property or a water vapor barrier property. In this case, without using a multi-layer preform or a preform containing a blended material as the preform 10a, the gas barrier property of the composite container 10A is enhanced, the content liquid is prevented from being deteriorated by oxygen, and the content is contained by evaporation of water vapor. Can be prevented from decreasing. For example, the plastic member 40 may be provided over the entire area of ​​the shoulder portion 12, the neck portion 13, the body portion 20, and the bottom portion 30 of the container main body 10 to enhance the gas barrier property of this portion. As such a material, PE, PP, MXD-6 (nylon), EVOH (ethylene vinyl alcohol copolymer), or an oxygen absorber such as a fatty acid salt may be mixed with these materials.
[0051]
　Further, the plastic member 40 (40a) may contain a material having a light ray barrier property such as ultraviolet rays. In this case, it is possible to enhance the light barrier property of the composite container 10A and prevent the content liquid from being deteriorated by ultraviolet rays or the like without using a multilayer preform or a preform containing a blend material as the preform 10a. For example, in the container main body 10, a plastic member 40 may be provided over the entire area of ​​the shoulder portion 12, the neck portion 13, the body portion 20, and the bottom portion 30 to enhance the ultraviolet barrier property of this portion. As such a material, a blend material or a material in which a light-shielding resin is added to PET, PE, or PP can be considered. Further, a foamed member having a foamed cell diameter of 0.5 to 100 μm, which is produced by mixing an inert gas (nitrogen gas, argon gas) with a melt of a thermoplastic resin, may be used.
[0052]
　Further, the plastic member 40 (40a) may include a material having a higher heat retention property or a lower heat retention property (a material having a lower heat conductivity) than the plastic material forming the container body 10 (preform 10a). In this case, it is possible to make it difficult for the temperature of the content liquid to be transmitted to the surface of the composite container 10A without increasing the thickness of the container body 10 itself. Thereby, the heat retaining property or the cold retaining property of the composite container 10A is enhanced. For example, a plastic member 40 may be provided on all or a part of the body 20 of the container body 10 to improve the heat retention or cold retention of the body 20. Further, when the user grips the composite container 10A, it is prevented that the composite container 10A becomes difficult to hold due to being too hot or too cold. As such a material, foamed polyurethane, polystyrene, PE, PP, phenol resin, polyvinyl chloride, urea resin, silicone, polyimide, melamine resin and the like can be considered. Further, a foaming member having a foam cell diameter of 0.5 to 100 μm, which is produced by mixing an inert gas (nitrogen gas, argon gas) with the melt of the thermoplastic resin, may be used. It is preferable to mix hollow particles with a resin material containing these resins. The average particle diameter of the hollow particles is preferably 1 to 200 μm, more preferably 5 to 80 μm. The "average particle size" means a volume average particle size, and is measured by a known method using a particle size distribution/particle size distribution measuring device (for example, Nanotrac particle size distribution measuring device, manufactured by Nikkiso Co., Ltd.). can do. Further, the hollow particles may be organic hollow particles composed of a resin or the like, or may be inorganic hollow particles composed of glass or the like, but are organic because of their excellent dispersibility. Hollow particles are preferred. Examples of the resin constituting the organic hollow particles include a styrene resin such as crosslinked styrene-acrylic resin, a (meth) acrylic resin such as acrylonitrile-acrylic resin, a phenol resin, a fluorine resin, a polyamide resin, and a polyimide. Resin, Polycarbonate Examples thereof include resin and polyether resin. In addition, Low Pay HP-1055, Low Pay HP-91, Low Pay OP-84J, Low Pay Ultra, Low Pay SE, Low Pay ST (manufactured by Rohm and Haas Co., Ltd.), Nipole MH-5055 (manufactured by Nippon Zeon Co., Ltd.), SX8782 , SX866 (manufactured by JSR Corporation) and other commercially available hollow particles can also be used. The content of the hollow particles is preferably 0.01 to 50 parts by mass and preferably 1 to 20 parts by mass with respect to 100 parts by mass of the resin material contained in the layer of the plastic member 40 containing the hollow particles. Is more preferable.
[0053]
　Further, the plastic member 40 (40a) may include a material that is less slippery than the plastic material forming the container body 10 (preform 10a). In this case, the user can easily grip the composite container 10A without changing the material of the container body 10. For example, a plastic member 40 may be provided on all or part of the body 20 of the container body 10 to facilitate holding the body 20.
[0054]
　Further, the plastic member 40 (40a) may be added with various additives other than the above-mentioned resin as the main component, as long as the characteristics thereof are not impaired. Examples of the additive include a plasticizer, an ultraviolet stabilizer, a coloring preventing agent, a matting agent, a deodorant, a flame retardant, a weatherproofing agent, an antistatic agent, a thread friction reducing agent, a slip agent, a release agent, and an antistatic agent. Excipients, ion exchangers, lubricants, coloring pigments and the like can be added.
[0055]
　In one embodiment, the plastic member 40 comprises a colored layer and / or a printed layer having a printed area (printed area).
[0056]
　　(Coloring layer) The
　coloring layer can include the above-mentioned resin material and a coloring agent.
[0057]
　As the colorant, a colorant such as brown, black, green, white, blue or red can be used.
　Since the plastic member 40 (40a) contains a colorant of a predetermined color, visible light in a desired wavelength range can be cut (absorbed or reflected), and the composite container 10A is filled with visible light. It is possible to prevent a problem that the content liquid is denatured.
　For example, when beer is filled as the content, it is required to cut visible light having a wavelength of 400 to 500 nm. In this case, the colored layer of the plastic member 40 (40a) contains a brown colorant, and the whole is colored brown, so that visible light having a wavelength of 400 to 500 nm can be cut, and the beer as the content. Degeneration can be prevented.
　In the present specification, the visible light means a light having a wavelength of 380 nm to 800 nm. The visible light transmittance can be measured by a method according to JIS A5759. For example, a spectrophotometer (UV3100, manufactured by Shimadzu Corp.) can be used to measure the visible light wavelength at a wavelength of 220 to 800 nm at intervals of 0.5 nm.
　Further, the colorant may be a pigment or a dye, but from the viewpoint of light resistance, it is preferably a pigment. Further, among the pigments, light reflecting pigments and light absorbing pigments are preferable.
　Examples of the light-reflecting pigment include titanium white, aluminum powder, mica powder, zinc sulfide, zinc white, calcium carbonate, kaolin, talc, and the like, and examples of the light-absorbing pigment include carbon black, ceramic black, bone black. And so on.
　Since the plastic member 40 (40a) contains a light-reflecting colorant and / or a light-absorbing colorant, visible light in a wider wavelength range can be cut, and the content to be filled in the composite container 10A. It is possible to prevent denaturation of the product. Among the above-mentioned colorants, light-absorbing pigments such as black and brown are more preferable because they can significantly reduce the visible light transmittance of the plastic member 40.
　The colored layer may include two or more of the above-described coloring agents, and the plastic member 40 may include two or more colored layers.
[0058]
　The content of the colorant in the colored layer is preferably 0.01 to 10 parts by mass and 0.1 to 3.0 parts by mass with respect to 100 parts by mass of the resin material contained in the colored layer. More preferably, it is more preferably 0.5 to 2.0 parts by mass. When the content of the colorant is within the above numerical range, the change in the resin performance of the colored layer can be suppressed as much as possible, and the color tone can be stably molded.
[0059]
　　(Printing Layer) As
　shown in FIG. 7, the printing layer is provided with printing such as design or printing, that is, has a printing region 44 (44a). Further, in FIG. 7, the printing is performed on the outside of the outer surface layer of the plastic member 40, but the present invention is not limited to this, and even if the printing is performed on the inside of any layer forming the plastic member 40, It may be applied to the outside.
　Since the plastic member 40 is provided with the printing layer, it is possible to display images and characters on the composite container 10A without separately attaching a label or the like to the container body 10. For example, a plastic member 40 may be provided on all or a part of the body 20 of the container body 10, and an image or characters may be displayed on the body 20.
[0060]
　Further, the printed area 44 (44a) may be formed on the outer side or the inner side of each layer included in the plastic member 40.
[0061]
　Further, printing can be performed by, for example, a printing method such as an inkjet method, a gravure printing method, an offset printing method, or a flexographic printing method.
[0062]
　This printing may be applied to the plastic member 40 of the composite container 10A after blow molding.
　Further, it may be applied to a resin film before lamination, which will be described later, or may be applied to a single-layer plastic resin tube before lamination. Further, it may be applied to the plastic member 40a before being attached to the preform 10a, or may be applied in a state where the plastic member 40a is provided outside the preform 10a.
[0063]
　Surface treatment such as corona treatment, low-temperature plasma treatment, and flame treatment is preferably performed on a portion of the plastic member 40 where the printed region is formed. By applying such a surface treatment, the wettability of the surface of the resin film and the resin tube can be improved, and the print quality can be improved.
　Further, in one embodiment, it is preferable to form an anchor coat layer in advance on the plastic member 40. When the anchor coat layer is provided, the adhesion of the ink to the plastic member 40 (40a) is improved. Therefore, it is not necessary to perform pretreatment such as corona treatment. Further, the bleeding of printing can be reduced by providing the anchor coat layer.
[0064]
　As described above, the plastic member 40 may be composed of a single layer or a multilayer, and even if the resin material forming the innermost layer and the outermost layer is the same, It may be different.
　Specifically, low density PE+/adhesive layer/EVOH/adhesive layer/low density PE, PP/adhesive layer/EVOH/adhesive layer/PP, low density PE/adhesive layer/low density PE+colorant ( (Colored layer) and the like.
　At least one of these layers may contain a coloring agent to form a coloring layer, or may be printed to form a printing layer.
　Examples of the adhesive constituting the adhesive layer include a polyvinyl acetate adhesive, a polyacrylic acid ester adhesive, a cyanoacrylate adhesive, an ethylene copolymer adhesive, a cellulose adhesive, and a polyester adhesive. Examples thereof include polyamide adhesives, polyimide adhesives, amino resin adhesives, phenol resin adhesives, epoxy adhesives, polyurethane adhesives, rubber adhesives, and silicone adhesives.
[0065]
　Further, since the plastic member 40 is not welded or adhered to the container body 10, it can be peeled off and removed from the container body 10.
　Specifically, for example, the plastic member 40 may be cut using a knife or the like, or the plastic member 40 may be provided with a cutting line (not shown in advance) and the plastic member 40 may be peeled off along the cutting line. it can. As a result, the printed plastic member 40 can be separated and removed from the container body 10, so that the colorless and transparent container body 10 can be recycled as in the conventional case.
[0066]
　Further, the thickness of the plastic member 40 is not limited to this, but may be, for example, about 5 μm to 50 μm when attached to the container body 10.
[0067]
(Surface Protective Layer 80) In
　one embodiment, as shown in FIG. 5, the composite container 10A may include a surface protective layer 80 on the surface of the plastic member 40. The surface protective layer 80 serves to protect the plastic member 40.
　The surface protective layer 80 may be provided not only to cover the plastic member 40 but also to cover the whole or a part of the container.
　The surface protective layer 80 may be colored or may not be colored. Further, it may be transparent or opaque, but when the plastic member 40 is printed, it should be transparent from the viewpoint of maintaining the printing quality and the like. Is preferred.
[0068]
　In one embodiment, the surface protection layer 80 is thinly stretched on the outer surface of the plastic member 40 and covers at least the plastic member 40. Further, the surface protection layer 80 is provided over the entire area in the circumferential direction so as to surround the plastic member 40 and the container body 10, and has a substantially circular horizontal cross section.
[0069]
　In one embodiment, the surface protective layer 80 is provided so as to cover the shoulder portion 12, the body portion 20 and the bottom portion 30, and the plastic member 40 of the container body 10, excluding the mouth portion 11 and the neck portion 13.
　The surface protective layer 80 may be provided in the entire area or a part of the container body 10 and the plastic member 40.
　For example, it may be provided so as to cover only the printed part and the colored part of the surface of the plastic member 40. Furthermore, the surface protective layer 80 is not limited to one, and a plurality of surface protective layers 80 may be provided.
[0070]
　The surface protective layer 80 preferably contains a thermosetting resin or an ionizing radiation curable resin, and is more preferably an ionizing radiation curable resin from the viewpoint of high surface hardness and excellent productivity. A thermosetting resin and an ionizing radiation curable resin may be used in combination.
[0071]
　The ionizing radiation curable resin is not particularly limited as long as it can undergo a polymerization cross-linking reaction by irradiation with ionizing radiation such as ultraviolet rays and electron beams, and is not particularly limited as long as it can undergo a polymerization cross-linking reaction. Examples thereof include spiroacetal resin, polybutadiene resin, polythiol polycircular resin, and polyhydric alcohol.
　More specifically, a polymethylol propantri having two or more unsaturated bonds such as ethyl (meth) acrylate, ethylhexyl (meth) acrylate, styrene, methylstyrene, and N-vinylpyrrolidone having one unsaturated bond. (Meth)acrylate, hexanediol (meth)acrylate, tripropylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, pentaerythritol tri(meth)acrylate, dipentaerythritol hexa(meth)acrylate, 1,6-hexane Examples thereof include diol di(meth)acrylate, neopentyl glycol di(meth)acrylate, and a reaction product of the above compound with (meth)acrylate.
　In addition, in this specification, "(meth) acrylate" refers to methacrylate and acrylate.
　Further, it is preferable to use these resins in combination with a photopolymerization initiator, and examples thereof include acetophenones, benzophenones, and benzyls.
[0072]
　As the thermosetting resin, for example, phenol resin, urea resin, diallyl phthalate resin, melamine resin, guanamine resin, unsaturated polyester resin, polyurethane resin, epoxy resin, aminoalkyd resin, melamine-urea co-condensation resin, silicon resin, Examples thereof include polysiloxane resin.
　Further, it is preferable to use these resins in combination with a thermal polymerization initiator, a curing accelerator, a curing agent and the like.
[0073]
　The surface protective layer 80 (80a) is formed by applying and curing the coating liquid containing the above resin composition by using a printing method such as an inkjet method, a gravure printing method, an offset printing method, a flexographic printing method, or the like. Can be made.
　Among these, the inkjet method can be used because the coating area and shape of the coating liquid can be adjusted, the amount of the coating liquid used can be reduced, and the pattern can be reproduced due to the glossiness. preferable.
　Further, if the inkjet method is used, printing on the surface of the plastic member 40 (40a) and formation of the surface protective layer 80 (80a) can be performed in the same apparatus, which is preferable because the number of steps can be reduced. ..
　Specifically, the coating liquid is applied to at least the surface of the plastic member 40 (40a) using an inkjet method, and then the surface protective layer 80 (80a) is irradiated with ionizing radiation and cured. Can be formed.
　As the ionizing radiation, an electromagnetic wave or charged particles having energy capable of causing a curing reaction of molecules in the ionizing radiation curable resin is used. Usually, ultraviolet rays or electron beams are used, but visible rays, X-rays, ion beams, etc. can also be used.
[0074]
　The surface protection layer 80a (80) can be formed on the plastic member 40a before being attached to the preform 10a, for example.
　Further, the plastic member 40a and/or the preform 10a included in the composite preform 70 before blow molding can be formed.
　It can also be formed on the plastic member 40 and / or the container body 10 included in the composite container after blow molding.
　Further, it can be formed on a resin sheet before being molded into the plastic member 40a.
[0075]
　Further, the thickness of the surface protective layer 80 is not limited to this, but may be, for example, about 1 μm to 20 μm in a state of being attached to the container body 10.
[0076]
(Label 43) In
　one embodiment, as shown in FIG. 6, the composite container 10A has the label 43 attached to the container body 10 and / or the plastic member 40.
　As the label 43, for example, a shrink label, a stretch label, a roll label, a tack label, a paper label, or a label suspended from the neck portion 13 of the composite container 10A with a string or the like (hereinafter, referred to as a “hanging label” in some cases”. ) And the like. Among these, it is preferable to use a shrink label, a stretch label, or a roll label because of high productivity.
[0077]
　It is preferable that the label 43 is provided with a printing area in which printing is performed. The items displayed in the print area may be character information such as the name of the content liquid, the manufacturer, and the name of the raw material, in addition to the design and the product name. Part or all of the label 43 may be colored in colors such as red, blue, yellow, green, brown, black, and white, and may be transparent or opaque.
[0078]
　As the composite container 10A provided with the label 43, for example, as shown in FIG. 8(a), a container in which the label 43 is attached so as to cover a part of the composite container 10 and the plastic member 40 can be mentioned.
　Further, as shown in FIG. 8B, a label 43 attached so as to cover the entire area of ​​the plastic member 40 can be mentioned.
　Further, as shown in FIG. 8C, the label 43 is provided so as to cover the entire area of ​​the plastic member 40, and the portion for displaying the characters on the label is transparent, so that the plastic member 40 is colored. Other configurations can be mentioned.
　Further, as shown in FIG. 8 (d), a label 43 on which characters are displayed is suspended from the neck portion 13 of the composite container 10A.
　Further, the present invention is not limited to this, and the plastic member 40 and the label 43 are printed with different patterns, and the plastic member 40 and the label 43 are overlapped with each other to form a single picture or a three-dimensional effect. It is also possible to have a structure having (not shown).
[0079]
　Hereinafter, each aspect of the above-mentioned label will be described.
[0080]
　The shrink label can be wound so as to cover the whole or a part of the container body 10 and/or the plastic member 40. The shrink label can be obtained by attaching the shrink label to the container body 10 and/or the plastic member 40 and shrink-processing at a temperature of 80 to 90 degrees.
[0081]
　Shrink labels include polylactic acid films, polystyrene films, polyester films, low density polyethylene films, medium density polyethylene films, high density polyethylene films, low density linear polyethylene films, cyclic polyolefin films, polypropylene films, and ethylene-propylene. Centrifugal polyolefin film, polyester-polystyrene multilayer film, non-woven fabric formed from a resin such as copolymer, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer And shrink film, laminated film, polyester-polystyrene coextrusion film, 6-nylon film, 6,6-nylon film and other polyamide films, chlorinated polyethylene, chlorinated polypropylene and other modified polyolefin films, It can be produced by using a film formed from a resin of vinyl chloride-vinyl acetate copolymer, a resin film such as an acrylic resin film.
[0082]
　The above-mentioned film is a single layer using one or two or more kinds of resins constituting the film and using a film-forming method such as an extrusion method, a cast molding method, a T-die method, a cutting method, an inflation method or the like. A film-formed product, a multi-layer film formed by co-extrusion using two or more resins, or a film formed by mixing two or more resins and uniaxially using a tenter system or a tubular system. Various resin films formed by biaxial stretching can be used, but a uniaxially stretched film that is a stretched film is preferable. Further, these films may be foam films.
[0083]
　In the present invention, from the viewpoint of high heat insulating properties, a stretched polyester-based film, a stretched polystyrene-based film, a stretched polyolefin-based film, a polylactic acid-based film, a foamed polyolefin-based film, a stretched polyester-polyester coextruded film or a expanded polystyrene-based film, A polyester-polyester multilayer film or the like can be preferably used, or a laminated film of a non-woven film and the film may be used. The stretched film may be uniaxially stretched or biaxially stretched, and in the case of a uniaxially stretched film, it may be longitudinally uniaxially stretched or transversely uniaxially stretched.
[0084]
　The thickness of the shrink label is not limited to this, but can be, for example, about 10 μm to 80 μm when attached to the composite container 10A.
[0085]
　Like the shrink label, the stretch label can be wrapped so as to cover the entire or a part of the container body 10 and / or the plastic member 40. The stretch label can be obtained by being fitted into the composite container 10A in a state of being pulled in the circumferential direction, then contracting by removing the pulling force, following the composite container 10A, and winding.
[0086]
　Stretch labels are made of thermoplastic resin films with moderate flexibility, such as single-layer or multilayer resin films made of polyolefin resins such as low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-density linear polyethylene, and polypropylene. Can be made using. Among them, it is preferable to use a single-layer film made of low-density linear polyethylene and a multilayer film provided with a layer made of low-density linear polyethylene. These films can be produced by the method described above.
[0087]
　The thickness of the stretch label is not limited to this, but can be, for example, about 5 μm to 50 μm when attached to the composite container 10A.
[0088]
　Like the shrink label, the roll label and the tack label can be wound so as to cover the whole or a part of the container body 10 and/or the plastic member 40. The roll label can be obtained by wrapping a resin film around a composite container and adhering or fusing the ends of the resin film. The tack label can be obtained by directly attaching the resin film to the composite container via an adhesive or the like.
[0089]
　The roll label and the tack label can be produced by using the above-mentioned resin film. Examples of the adhesive include a polyvinyl acetate adhesive, a polyacrylic acid ester adhesive, a cyanoacrylate adhesive, an ethylene copolymer adhesive, a cellulose adhesive, a polyester adhesive, and a polyamide adhesive. Examples thereof include polyimide adhesives, amino resin adhesives, phenol resin adhesives, epoxy adhesives, polyurethane adhesives, rubber adhesives, and silicone adhesives.
[0090]
　The thickness of the roll label and the tack label is not limited to this, but can be, for example, about 5 μm to 100 μm when attached to the composite container 10A.
[0091]
　Similarly to the shrink label, the paper label can be wound so as to cover the whole or a part of the container body 10 and/or the plastic member 40. Similar to the tack label, the paper label can be obtained by directly attaching the resin film to the composite container via an adhesive or the like.
[0092]
　It is preferable that the paper label is produced by using paper excellent in water resistance impregnated with a polyisocyanate compound or the like.
[0093]
　The thickness of the paper label is not limited to this, but can be, for example, about 50 μm to 300 μm when attached to the composite container 10A.
[0094]
　The hanging label can be obtained by hanging a label made of resin film or paper from the neck portion 13 of the composite container 10A with a string or the like. The size and thickness of this label are not particularly limited, and a label of any size and thickness can be used.
[0095]
(Composite Preform 70)
　Next, the configuration of the composite preform 70 according to the present embodiment will be described with reference to FIG.
[0096]
　As shown in FIG. 4, the composite preform 70 includes a preform 10a made of a plastic material and a bottomed cylindrical plastic member 40a provided outside the preform 10a.
　Further, in one embodiment, as shown in FIG. 9, a surface protection layer 80a may be provided on the surface of the plastic member 40a.
[0097]
(Preform 10a) The
　preform 10a includes a mouth portion 11a, a body portion 20a connected to the mouth portion 11a, and a bottom portion 30a connected to the body portion 20a.
　The mouth portion 11a corresponds to the mouth portion 11 of the container body 10 described above, and has substantially the same shape as the mouth portion 11.
　Further, the body portion 20a corresponds to the neck portion 13, the shoulder portion 12 and the body portion 20 of the container body 10 described above, and has a substantially cylindrical shape.
　The bottom portion 30a corresponds to the bottom portion 30 of the container body 10 described above, and has a substantially hemispherical shape.
[0098]
(Plastic member 40a) The
　plastic member 40a is attached to the outer surface of the preform 10a without being adhered to the preform 10a so that it does not move or rotate, or does not fall under its own weight. It is in close contact with the degree. The plastic member 40a is provided over the entire circumferential direction so as to surround the preform 10a, and has a circular horizontal cross section.
[0099]
　In this case, the plastic member 40a is provided so as to cover the entire body portion 20a except for the portion 13a corresponding to the neck portion 13 of the container body 10 and the entire bottom portion 30a.
[0100]
　The plastic member 40a may be provided in the whole area or a partial area other than the mouth portion 11a. For example, the plastic member 40a may be provided so as to cover the whole of the body portion 20a and the bottom portion 30a except the mouth portion 11a. Further, the number of plastic members 40a is not limited to one, and a plurality of plastic members 40a may be provided. For example, two plastic members 40a may be provided at two locations on the outer side of the body portion 20a.
[0101]
　The plastic member 40a (40) may not have a contracting action on the preform 10a (container body 10), and may have a shrinking action (shrinking tube). May be. After blow molding, the plastic member 40a (40) is a preform 10a (container body 10) from the viewpoint that the amount of air entering between the container body 10 and the plastic member 40 is small, that is, the adhesion is high. ), It is preferable that the material has a contracting action (shrinking tube).
[0102]
　In the former case, the plastic member 40a can be obtained by, for example, a blow tube manufactured by blow molding, a sheet molding tube manufactured by sheet molding such as deep drawing, an extrusion tube manufactured by extrusion molding, or an inflation method. An inflation-molded tube formed by molding a resin sheet, an injection-molded tube manufactured by injection molding, or the like can be used, but the present invention is not limited to this, and molding methods other than the above may be used.
[0103]
　On the other hand, when the plastic member (shrink tube) 40a has an action of contracting, the plastic member (shrink tube) 40a has, for example, with respect to the preform 10a when an external action (for example, heat) is applied. Those that shrink (for example, heat shrink) may be used. Alternatively, the plastic member (shrinkable tube) 40 may have shrinkability or elasticity by itself and can shrink without applying an external action.
[0104]
　The plastic member 40a may be made of a single layer or may be made of multiple layers.
　Preferably, it is composed of a plurality of layers including an inner surface layer 45, an intermediate layer 46 and an outer surface layer 47. It should be noted that these layers may be bonded via an adhesive layer.
[0105]
　Also, in one embodiment, the plastic member 40a comprises a colored layer and / or a printed layer having a printed area (printed area 44a).
[0106]
　The print area 44a may be formed on the outside or inside of each layer included in the plastic member 40a.
　For example, the print area 44a may be formed on the outer side of the outer surface layer 47 (see FIG. 10A) or may be formed on the inner side (see FIG. 10B).
　Further, the print region 44a may be formed outside the middle surface layer 46 (see FIG. 10C) or may be formed inside (see FIG. 10D).
　Further, the print region 44a may be formed outside the inner surface layer 45 (see FIG. 10E) or may be formed inside (see FIG. 10F).
[0107]
　For example, the plastic member 40a can be printed (the printing area 44a is formed) by the following method.
　First, as shown in FIG. 11, when printing is performed on the inner side of the intermediate layer 46, before the inner surface layer 45 and the outer surface layer 47 are laminated, an inkjet nozzle is formed inside the plastic resin tube forming the intermediate layer 46. 44 is inserted, printing is performed by an inkjet method (see FIG. 11A), and then the inner surface layer 41 and the intermediate layer 46 are laminated with an adhesive (see FIG. 11B).
　Then, by laminating the outer surface layer 47 via an adhesive (see FIG. 11C), a plastic member 40a printed on the inside of the intermediate layer 46 can be obtained (FIG. 11D). ).
　Examples of the adhesive include polyvinyl acetate adhesive, polyacrylic ester adhesive, cyanoacrylate adhesive, ethylene copolymer adhesive, cellulose adhesive, polyester adhesive, polyamide adhesive. Agents, polyimide adhesives, amino resin adhesives, phenol resin adhesives, epoxy adhesives, polyurethane adhesives, rubber adhesives, silicone adhesives and the like.
[0108]
　Further, when printing is performed on the outside of the plastic member 40a, the print area 44a can be formed by direct printing using an inkjet printer.
[0109]
　In one embodiment, a printer that prints on the outside of the plastic member 40a (composite preform 70) attached to the preform 10a can be used. In one embodiment, a printer is equipped with a composite preform, a head that rotates (rotates and revolves) the composite preform, an ink spraying unit that sprays ink onto a plastic member 40a that is mounted on the head, and an adhering unit. And an ink curing section for curing the formed ink. In this case, the plastic member 40a of the composite preform 70 mounted on the head is sprayed with ink in the ink spraying section while rotating and revolving. After that, the composite preform 70 rises in the head, and the ink is UV-cured in the ink curing section. As a result, the printing area 44a is formed on the outside of the plastic member 40a.
[0110]
　Also, in another embodiment, the printer has a plurality of wheels that convey the composite preform 70 and rotate it (rotate and revolve). The plurality of wheels include an ink spraying wheel that sprays ink and an ink curing wheel that cures the adhered ink. In this case, the composite preform 70 is sequentially conveyed by each ink spraying wheel, and the ink is sprayed on the ink spraying portion of each ink spraying wheel. After that, the ink is conveyed to an ink curing wheel, in which the ink is UV-cured, for example. As a result, the print area 43a is provided on the outside of the plastic member 40a.
[0111]
　In addition, printing can also be performed on the plastic member 40 included in the composite container 10A after blow molding.
　For example, in one embodiment, the composite container 10A is mounted, and the head that rotates (rotates and revolves) the composite container 10A and the ink spray that sprays ink onto the surface of the plastic member 40 of the composite container 10A mounted on the head. By using a printer having a section and an ink curing section that cures the attached ink, the plastic member 40 can be printed.
　In this case, the plastic member 40 of the composite container 10A mounted on the head is sprayed with ink at the ink spraying portion while rotating and revolving. After that, the composite container 10A rises in the head, and the ink is, for example, UV-cured at the ink-cured portion. As a result, printing is applied to the outside of the plastic member 40.
[0112]
　In another embodiment, the printer has a plurality of wheels that convey the composite container 10A and rotate (rotate and revolve) the composite container 10A. The plurality of wheels include an ink spraying wheel that sprays ink containing a gas barrier ink composition, and an ink curing wheel that cures the ink adhering to the composite container 10A. In this case, the composite container 10A is sequentially conveyed by each ink spraying wheel, and the ink containing the gas barrier ink composition is sprayed on the ink spraying portion of each ink spraying wheel. After that, the composite container 10A is conveyed to an ink curing wheel, in which the ink is, for example, UV cured. As a result, printing is applied to the outside of the plastic member 40.
[0113]
　The ink used for forming the print region 44 (44a) is not particularly limited, but is preferably one having a gas barrier property, that is, a gas permeation blocking property. Thereby, the gas barrier property such as the oxygen barrier property or the water vapor barrier property of the composite container can be improved. More specifically, to prevent oxygen from penetrating into the container, to prevent the content liquid from deteriorating, and to prevent evaporation of water vapor from the container to the outside to prevent the internal volume from decreasing. Can be done.
[0114]
　Further, the ink may contain a brown, black, green, white, red or blue colorant as a colorant. The colorant may be a pigment or a dye, but is preferably a pigment from the viewpoint of light resistance. Among the above colorants, which are light-reflecting pigments, titanium white, aluminum powder, mica powder, zinc sulfide, white pigments such as zinc white, calcium carbonate, kaolin, and talc, which are light-absorbing pigments, carbon black, Colored pigments such as ceramic black and bone black are preferred. By using an ink containing a pigment such as these, the transmittance of visible light of the plastic member 40 after blow molding can be reduced, and the quality of the content liquid filled in the composite container 10A can be prevented from changing. can do. Further, the content of the colorant in the ink is preferably 0.01 to 30% by mass, and more preferably 1 to 10% by mass.
[0115]
　Further, the ink preferably contains a thermosetting resin or an ionizing radiation curable resin, and is more preferably an ionizing radiation curable resin from the viewpoint of high surface hardness and excellent productivity. A thermosetting resin and an ionizing radiation curable resin may be used in combination.
[0116]
　The ionizing radiation curable resin includes polyester resin, polyether resin, acrylic resin, epoxy resin, urethane resin, alcohol resin, spiroacetal resin, and polybutadiene, which can undergo a polymerization cross-linking reaction by irradiation with ionizing radiation such as ultraviolet rays and electron beams. Examples thereof include resins, polythiol polycircle resins, polyhydric alcohols, and the like.
　Among these, the ultraviolet curable resin is preferable because it has high followability and is less likely to cause defects such as cracks by blow molding.
　As the ultraviolet curable resin, for example, a polymethylol having two or more unsaturated bonds such as ethyl (meth) acrylate, ethylhexyl (meth) acrylate, styrene, methylstyrene, and N-vinylpyrrolidone having one unsaturated bond. Propane tri(meth)acrylate, hexanediol (meth)acrylate, tripropylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, pentaerythritol tri(meth)acrylate, dipentaerythritol hexa(meth)acrylate, 1,6 -Hexanediol di(meth)acrylate, neopentyl glycol di(meth)acrylate, or the reaction product of the above compound with (meth)acrylate.
　In addition, in this specification, "(meth) acrylate" refers to methacrylate and acrylate. Further, it is preferable to use these resins in combination with a photopolymerization initiator, and examples thereof include acetophenones, benzophenones, and benzyls.
[0117]
　As the thermosetting resin, for example, phenol resin, urea resin, diallyl phthalate resin, melamine resin, guanamine resin, unsaturated polyester resin, polyurethane resin, epoxy resin, aminoalkyd resin, melamine-urea co-condensation resin, silicon resin, Examples include polysiloxane resin. Furthermore, it is preferable to use these resins in combination with a thermal polymerization initiator, a curing accelerator, a curing agent and the like.
[0118]
　The total content of the thermosetting resin and the ionizing radiation curable resin in the ink is preferably 1 to 20% by mass, and more preferably 1 to 10% by mass.
[0119]
　Printing may be repeated a plurality of times. As a result, even after the print layer 44a is stretched after blow molding, printing such as design or printing can be clearly displayed.
[0120]
　Further, before printing is performed, it is preferable to perform surface treatment such as corona treatment, low temperature plasma treatment, and frame treatment on the portion of the plastic member 40a (40) forming the print area 44a (44). By applying such a surface treatment, the wettability of the surface of the resin film and the resin tube can be improved, and the print quality can be improved. Note that the surface of the plastic member 40a is not limited to the resin film and the resin tube, and may be subjected to such a treatment.
[0121]
　Further, it is preferable that the anchor coat layer is formed in advance in the print area 44 (44a) of the plastic member 40 (40a). When the anchor coat layer is provided, the adhesion of the ink to the plastic member 40 (40a) is improved. Therefore, it is not necessary to perform pretreatment such as corona treatment. Further, the bleeding of printing can be reduced by providing the anchor coat layer.
[0122]
　The anchor coat layer can be formed using a conventionally known anchor coat agent. Further, the anchor coating layer is formed by, for example, applying a coating liquid containing an anchor coating agent to the plastic member 40a (40) by an inkjet method, irradiating the plastic member 40a (40) with ionizing radiation, and curing the coating liquid. be able to.
[0123]
　Further, it is preferable to form the surface protective layer 80a at the printed portion on the surface of the plastic member 40a (40). Since the surface protective layer 80a is formed on the surface of the plastic member 40a (40), it is possible to effectively prevent the occurrence of defects such as printing performed on the plastic member 40a (40) over time. Also, the durability of the composite container can be increased.
[0124]
　The surface protective layer 80a preferably contains a thermosetting resin or an ionizing radiation curable resin, and is more preferably an ionizing radiation curable resin from the viewpoint of high surface hardness and excellent productivity. The thermosetting resin and the ionizing radiation curing resin may be used together. As the thermosetting resin and the ionizing radiation curable resin, those mentioned above can be used. The surface protection layer 80a is formed by applying a coating liquid containing the above resin to a printed portion of the surface of the plastic member 40a (40) by using an inkjet method, and irradiating it with, for example, ionizing radiation to cure it. It can be formed by.
[0125]
　Next, the shape of the plastic member 40a will be described.
[0126]
　As shown in FIG. 12( a ), the plastic member 40 a has a bottomed cylindrical shape as a whole, and may have a cylindrical body portion 41 and a bottom portion 42 connected to the body portion 41. ..
　In this case, since the bottom portion 42 of the plastic member 40a covers the bottom portion 30a of the preform 10a, various functions and characteristics can be imparted to the bottom portion 30 in addition to the body portion 20 of the composite container 10A. Examples of such a plastic member 40a include the blow tube and the sheet forming tube described above.
[0127]
　Further, as shown in FIG. 12B, the plastic member 40a may have a circular tube shape (bottomless cylindrical shape) as a whole, and may have a cylindrical body portion 41. In this case, as the plastic member 40a, for example, the blow tube, extrusion tube, inflation molding tube, and sheet molding tube described above can be used.
[0128]
　Further, as shown in FIGS. 12 (c) and 12 (d), the plastic member 40a may be manufactured by forming a film into a tubular shape and laminating its ends. In this case, as shown in FIG. 12 (c), the plastic member 40a may be formed in a pipe shape (bottomless cylindrical shape) having a body portion 41, and as shown in FIG. 12 (d). The bottom portion 42 may be bonded to form a bottomed tubular shape. In this case, as the plastic member 40a, for example, a blow tube, an extruded tube, an inflation molded tube, or a sheet molded tube can be used.
[0129]
　Next, a method of manufacturing the plastic member 40a will be described.
[0130]
　In one embodiment, the plastic member 40a can be manufactured by molding a resin sheet containing a resin material and optionally a coloring agent.
　Examples of the molding method include deep drawing molding, or a method of molding a resin sheet into a tube shape and fusing or adhering its ends.
　Further, the multi-layered plastic member 40a can be obtained by molding a laminated resin sheet in which two or more resin sheets are laminated via the above-mentioned adhesive.
　Examples of the adhesive to be used include polyvinyl acetate adhesive, polyacrylic acid ester adhesive, cyanoacrylate adhesive, ethylene copolymer adhesive, cellulose adhesive, polyester adhesive, and polyamide adhesive. Agents, polyimide adhesives, amino resin adhesives, phenol resin adhesives, epoxy adhesives, polyurethane adhesives, rubber adhesives, silicone adhesives and the like. This adhesive can be applied, for example, by a roll coating method, a gravure roll coating method, a coating method such as a kiss coating method, or a printing method.
[0131]
　The resin sheet may be a commercially available product or can be produced by a conventionally known method. In the present invention, it is preferably produced by extrusion molding, and the extrusion molding is preferably carried out by a T-die method or an inflation method.
[0132]
　In one embodiment, the plastic member 40a can also be produced by extruding a mixture containing a heat-melted resin material and, if desired, a colorant or the like into a tube.
　In this case, the multi-layered plastic member 40a can be obtained by co-extruding two or more kinds of resin materials. The plastic member 40a can also be obtained by extruding the mixture in a mold and then blow-molding the mixture in the mold so as to expand the diameter along the inner surface of the mold.
[0133]
　Further, the shrinkable plastic member 40a can be obtained as follows.
　First, one end of a tube obtained by extruding a mixture containing the above resin material or the like is closed by adhesion, welding or the like. A tube whose one end is closed is placed in a tube-shaped mold having an inner diameter larger than the outer diameter of the tube, and a blowing device is placed at the other end of the tube. At this time, it is preferable that the blow device is in close contact with the tube so that air does not leak between them.
　Next, the tube, the mold, and the blow device are sent into the heating furnace in this arrangement and heated to 70 to 150 ° C. inside the heating furnace. As the heating furnace, a hot air circulation type heating furnace may be used in order to maintain a uniform temperature inside. Alternatively, the tubes, molds and blowers may be heated by passing them through a heated liquid. Next, the tube, the mold and the blow device are taken out from the heating furnace, and the inner surface of the tube is pressure-stretched by ejecting air from the blow device into the tube. As a result, the tube expands and the diameter is expanded along the inner surface shape of the mold. After that, the tube is cooled in cold water while the air is ejected from the blower, and the tube is taken out of the mold. By cutting this into a desired size, a shrinkable plastic member 40a can be obtained.
[0134]
　Further, in one embodiment, the plastic member 40a can also be obtained by an injection molding method. Specifically, first, the resin material is heated and melted. Next, the heat-melted resin material is injected into the mold. The plastic member 40a can also be obtained by cooling this and taking it out of the mold.
[0135]
(Manufacturing Method of Composite Container 10A)
　Next, a manufacturing method (blow molding method) of the composite container 10A according to the present embodiment will be described with reference to FIGS. 13 (a) to 13 (f).
[0136]
　First, a preform 10a made of a plastic material is prepared (see FIG. 13(a)). In this case, the preform 10a may be manufactured by an injection molding method using, for example, an injection molding machine (not shown). Further, as the preform 10a, a preform generally used in the past may be used.
[0137]
　Next, by providing the plastic member 40a on the outside of the preform 10a, a composite preform 70 having the preform 10a and the plastic member 40a in close contact with the outside of the preform 10a is produced (FIG. 13 (FIG. 13). See b)).
　In this case, the plastic member 40 a has a bottomed cylindrical shape as a whole, and has a cylindrical body portion 41 and a bottom portion 42 connected to the body portion 41. The plastic member 40a is attached so as to cover the entire body portion 20a except for the portion corresponding to the neck portion 13 of the container body 10 and the entire bottom portion 30a.
[0138]
　In this case, a plastic member 40a having an inner diameter equal to or slightly smaller than the outer diameter of the preform 10a may be pushed into the preform 10a so as to be brought into close contact with the outer surface of the preform 10a.
　Alternatively, as will be described later, a heat-shrinkable plastic member 40a is provided on the outer surface of the preform 10a, and the plastic member 40a is heated to 50° C. to 100° C. to heat-shrink the outer surface of the preform 10a. It may be in close contact with.
[0139]
　In this way, a series of steps (FIGS. 13A to 13B) for producing the composite preform 70 by bringing the plastic member 40a into close contact with the outside of the preform 10a in advance to prepare the composite preform 70. )) And a series of steps (FIGS. 13 (c) to (f)) for producing the composite container 10A by blow molding can be carried out at different places (factory or the like).
[0140]
　Next, the composite preform 70 is heated by the heating device 51 (see FIG. 13C). At this time, the composite preform 70 is uniformly heated in the circumferential direction by the heating device 51 while rotating with the mouth portion 11a facing downward. The heating temperature of the preform 10a and the plastic member 40a in this heating step may be, for example, 90 ° C to 130 ° C.
[0141]
　Subsequently, the composite preform 70 heated by the heating device 51 is sent to the blow molding die 50 (see FIG. 13D).
[0142]
　The composite container 10A is molded using this blow molding die 50. In this case, the blow molding die 50 is composed of a pair of body portion dies 50a and 50b and a bottom portion die 50c which are divided from each other (see FIG. 13D). In FIG. 13D, the pair of body molds 50a and 50b are open to each other, and the bottom mold 50c is raised upward. In this state, the composite preform 70 is inserted between the pair of body molds 50a and 50b.
[0143]
　Next, as shown in FIG. 13 (e), after the bottom mold 50c is lowered, the pair of body molds 50a and 50b are closed and sealed by the pair of body molds 50a and 50b and the bottom mold 50c. The blow-molded mold 50 is constructed. Next, air is press-fitted into the preform 10a, and biaxial stretch blow molding is performed on the composite preform 70.
[0144]
　As a result, the container body 10 can be obtained from the preform 10a in the blow molding die 50. During this time, the body molds 50a and 50b are heated to 30 ° C to 80 ° C, and the bottom mold 50c is cooled to 5 ° C to 25 ° C. At this time, in the blow molding die 50, the preform 10a of the composite preform 70 and the plastic member 40a are integrally expanded. As a result, the preform 10a and the plastic member 40a are integrally formed into a shape corresponding to the inner surface of the blow molding die 50.
[0145]
　In this way, a composite container 10A including the container body 10 and the plastic member 40 provided on the outer surface of the container body 10 is obtained.
[0146]
　Next, as shown in FIG. 13F, the pair of barrel dies 50a, 50b and the bottom die 50c are separated from each other, and the composite container 10A is taken out from the blow molding die 50.
[0147]
　(Modified Example of Manufacturing Method of Composite Container 10A)
　Next, a modified example of the blow molding method (manufacturing method of composite container 10A) according to the present embodiment will be described with reference to FIGS. 14A to 14F.
　The modified examples shown in FIGS. 14(a) to 14(f) are those in which the plastic member 40a has a function of contracting with respect to the preform 10a (contraction tube), and other configurations are shown in FIGS. It is substantially the same as the form shown in (f). In FIGS. 14A to 14F, the same parts as those in FIGS. 13A to 13F are designated by the same reference numerals and detailed description thereof will be omitted.
[0148]
　First, a preform 10a made of a plastic material is prepared (see FIG. 14A).
[0149]
　Next, a plastic member (shrink tube) 40a is provided on the outside of the preform 10a, which is composed of a plurality of layers and at least one of the plurality of layers is a colored layer (see FIG. 14 (b)).
　In this case, the plastic member (shrinkable tube) 40 a has a bottomed cylindrical shape as a whole, and has a cylindrical body portion 41 and a bottom portion 42 connected to the body portion 41. The plastic member (shrinkable tube) 40 is mounted so as to cover the entire body portion 20a except for the portion corresponding to the neck portion 13 of the container body 10 and the entire bottom portion 30a.
[0150]
　Next, the preform 10a and the plastic member (shrink tube) 40a are heated by the heating device 51 (see FIG. 14C).
　At this time, the preform 10a and the plastic member (shrink tube) 40a are uniformly heated in the circumferential direction by the heating device 51 while rotating with the mouth portion 11a facing downward. The heating temperature of the preform 10a and the plastic member (shrink tube) 40a in this heating step may be, for example, 90 ° C to 130 ° C.
[0151]
　When the plastic member (shrink tube) 40a is heated in this way, the plastic member (shrink tube) 40a is thermally shrunk and comes into close contact with the outside of the preform 10a (see FIG. 14 (c)).
　In addition, when the plastic member (shrinkable tube) 40a itself has a shrinkability, the plastic member (shrinkable tube) shrinks at the time when the plastic member (shrinkable tube) 40a is provided outside the preform 10a (see FIG. 14B). The tube) 40a may be in close contact with the outside of the preform 10a.
[0152]
　Subsequently, the preform 10a and the plastic member (shrinkable tube) 40a heated by the heating device 51 are sent to the blow molding die 50 (see FIG. 14D).
[0153]
　The preform 10a and the plastic member (shrink tube) 40a are molded by using the blow molding die 50, and the container body 10 and the container body 10 are formed in substantially the same manner as in the cases of FIGS. A composite container 10A including a plastic member (shrinkable tube) 40 provided on the outer surface of the container body 10 is obtained (see FIGS. 14D to 14F).
[0154]
(Other Modifications of the Method for Manufacturing the Composite Container 10A)
　Next , another modification of the method for manufacturing the composite container 10A (blow molding method) according to the present embodiment will be described with reference to FIGS. 15 (a) to 15 (g). ..
　The modified examples shown in FIGS. 15 (a) to 15 (g) are those in which the plastic member 40a has an action of contracting with respect to the preform 10a (shrink tube), and the preform 10a and the plastic member (shrink tube). 40a is heated in two steps, and other configurations are substantially the same as those shown in FIGS. 13(a) to 13(f). In FIGS. 15A to 15G, the same parts as those in FIGS. 13A to 13F are designated by the same reference numerals and detailed description thereof will be omitted.
[0155]
　First, a preform 10a made of a plastic material is prepared (see FIG. 15(a)).
[0156]
　Next, a plastic member (shrink tube) 40a is provided on the outside of the preform 10a (see FIG. 15B). In this case, the plastic member (shrink tube) 40a has a bottomed cylindrical shape as a whole, and has a cylindrical body portion 41 and a bottom portion 42 connected to the body portion 41. The plastic member (shrinkable tube) 40 is mounted so as to cover the entire body portion 20a except for the portion corresponding to the neck portion 13 of the container body 10 and the entire bottom portion 30a.
[0157]
　Next, the preform 10a and the plastic member (shrinkable tube) 40a are heated by the first heating device 55 (see FIG. 15C). At this time, the heating temperature of the preform 10a and the plastic member (shrinkable tube) 40a may be, for example, 50°C to 100°C.
[0158]
　When the plastic member (shrink tube) 40a is heated, the plastic member (shrink tube) 40a is heat-shrinked and comes into close contact with the outside of the preform 10a. As a result, a composite preform 70 having the preform 10a and the plastic member (contractile tube) 40a that is adhered to the outside of the preform 10a is obtained (see FIG. 15C).
[0159]
　In this way, the composite preform 70 is produced by heat-adhering the plastic member (shrink tube) 40a to the outside of the preform 10a in advance using the first heating device 55 to prepare the composite preform 70. A series of steps for manufacturing (FIGS. 15 (a) to (c)) and a series of steps for producing the composite container 10A by blow molding (FIGS. 15 (d) to (g)) are performed at different locations (factory, etc.). Can be implemented in.
[0160]
　Next, the composite preform 70 is heated by the second heating device 51 (see FIG. 15D). At this time, the composite preform 70 is uniformly heated in the circumferential direction by the second heating device 51 while rotating with the mouth 11a facing downward. The heating temperature of the preform 10a and the plastic member (shrink tube) 40a in this heating step may be, for example, 90 ° C to 130 ° C.
[0161]
　Subsequently, the composite preform 70 heated by the second heating device 51 is sent to the blow molding die 50 (see FIG. 15E).
[0162]
　The composite preform 70 is molded using the blow molding die 50, and is provided on the container body 10 and the outer surface of the container body 10 in substantially the same manner as in the cases of FIGS. 13 (a) to 13 (f) described above. A composite container 10A provided with a shrink tube (shrink tube) 40 is obtained (see FIGS. 15 (e) to 15 (g)).
[0163]
　As described above, according to the present embodiment, by performing blow molding on the composite preform 70 in the blow molding die 50, the preform 10a of the composite preform 70 and the plastic member 40a are integrated. As a result, the composite container 10A including the container body 10 and the plastic member 40 is produced. As a result, the preform 10a (container body 10) and the plastic member 40a (plastic member 40) can be made of separate members. Therefore, various functions and characteristics can be freely imparted to the composite container 10A by appropriately selecting the type and shape of the plastic member 40.
[0164]
　Further, according to the present embodiment, when the composite container 10A is manufactured, a general blow molding apparatus can be used as it is, so that it becomes necessary to prepare a new molding facility for manufacturing the composite container 10A. Absent.
[0165]
Modifications of the
　First Embodiment Next, modifications of the first embodiment of the present invention will be described with reference to FIGS. 16, 17 and 18 (a) to 18 (f).
[0166]
　The modified examples shown in FIGS. 16, 17 and 18 (a) to 18 (f) do not have a body and a bottom as the plastic member 40a, but use a cylindrical plastic member 40a. ..
[0167]
　In the composite container 10A shown in FIG. 16, the plastic member 40 extends from the shoulder portion 12 of the container body 10 to the lower portion of the body portion 20, but does not reach the bottom portion 30. Further, in the composite preform 70 shown in FIG. 17, the plastic member 40a is in close contact so as to cover only the body portion 20a of the preform 10a, and more specifically, the neck portion 13 of the container body 10 of the body portion 20a. Covers a region other than the portion 13a corresponding to the above and the portion corresponding to the lower portion of the body portion 20a.
[0168]
　The other configurations in FIGS. 16, 17 and 18 (a) to 18 (f) are substantially the same as the embodiments shown in FIGS. 1 to 15. In the modified examples shown in FIGS. 16, 17 and 18 (a) to 18 (f), the same parts as those of the embodiments shown in FIGS. 1 to 15 are designated by the same reference numerals, and detailed description thereof will be omitted.
[0169]
　In addition, the configuration and manufacturing method of the composite container 10A and the configuration and manufacturing method of the composite preform 70 are substantially the same as those in the embodiment shown in FIGS. 1 to 15, and thus detailed description thereof will be omitted. Further, in FIGS. 16, 17 and 18 (a) to 18 (f), those having a function of shrinking the plastic member 40a with respect to the preform 10a may be used.
[0170]

　Second Embodiment Next, a second embodiment of the present invention will be described with reference to the drawings. 19 to 28 are views showing a second embodiment of the present invention. In FIGS. 19 to 28, the same parts as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.
[0171]
(Composite container 10A)
　First, the outline of the composite container produced by the blow molding method according to the present embodiment will be described with reference to FIGS. 19 and 20.
[0172]
　As will be described later, the composite container 10A shown in FIGS. 19 and 20 is formed into a composite preform 70 (see FIG. 21) including a preform 10a, an inner label member 60a, and a plastic member 40a by using a blow molding die 50. On the other hand, it is obtained by integrally expanding the preform 10a, the inner label member 60a, and the plastic member 40a of the composite preform 70 by performing biaxial stretch blow molding.
[0173]
　Such a composite container 10A is provided inside a container body 10 made of a plastic material, an inside label member 60 closely attached to the outside of the container body 10, and an outside label of the inside label member 60. It is provided with a plastic member 40.
[0174]
(Container body 10)
　Of these, the container body 10 includes a mouth portion 11, a neck portion 13 provided below the mouth portion 11, a shoulder portion 12 provided below the neck portion 13, and a body provided below the shoulder portion 12. A portion 20 and a bottom portion 30 provided below the body portion 20 are provided.
[0175]
　On the other hand, the inner label member 60 is in close contact with the outer surface of the container body 10 in a thinly extended state, and is in close contact with the container body 10 so as not to easily move or rotate.
[0176]
　Further, the plastic member 40 is adhered to the outer surface of the container body 10 and the outer surface of the inner label member 60 in a thinly extended state, and is adhered to the container body 10 so as not to easily move or rotate. There is.
[0177]
　It is conceivable that at least a part of the plastic member 40 is translucent or transparent. In this case, the inner label member 60 can be visually recognized from the outside through the translucent or transparent portion. The plastic member 40 may be translucent or transparent as a whole, or may have an opaque portion and a translucent or transparent portion (for example, a window portion). In this embodiment, a case where the entire plastic member 40 is transparent will be described as an example.
[0178]
(Inner Label Member 60)
　Next, the inner label member 60 will be described. The inner label member 60 is obtained by providing the inner label member 60a so as to surround the outside of the preform 10a, and biaxially stretching blow molding the preform 10a and the inner label member 60a together.
[0179]
　The inner label member 60 is attached to the outer surface of the container body 10 without being adhered, and is in close contact with the container body 10 so as not to move or rotate. The inner label member 60 is thinly stretched on the outer surface of the container body 10 to cover the container body 10. As shown in FIG. 19, the inner label member 60 is provided over the entire circumferential direction so as to surround the container body 10, and has a substantially circular horizontal cross section.
[0180]
　In this case, the inner label member 60 is provided so as to cover the shoulder portion 12, the body portion 20, and the bottom portion 30 of the container body 10, excluding the mouth portion 11 and the neck portion 13. As a result, desired characters, images, and the like can be added to the shoulder portion 12, the body portion 20, and the bottom portion 30 of the container body 10, and the composite container 10A can be decorated and information can be displayed.
[0181]
　The inner label member 60 may be provided in the entire area or a part of the container body 10 other than the mouth portion 11. For example, the inner label member 60 may be provided so as to cover the neck portion 13, the shoulder portion 12, the body portion 20, and the bottom portion 30 of the container body 10 except the mouth portion 11. Further, the number of inner label members 60 is not limited to one, and a plurality of inner label members 60 may be provided. The inner label member 60 may be provided in the same area as the plastic member 40, or may be provided in a narrower area than the plastic member 40. In the latter case, the inner label member 60 is preferably completely covered by the plastic member 40.
[0182]
　The thickness of the inner label member 60 is not limited to this, but can be, for example, about 5 μm to 50 μm when attached to the container body 10.
[0183]
(Plastic Member 40)
　Next, the plastic member 40 will be described. The plastic member 40 is obtained by providing the plastic member 40a so as to surround the outer side of the inner label member 60a, and integrally stretching the preform 10a, the inner label member 60a, and the plastic member 40a by biaxial stretching blow molding. It has been done.
[0184]
　The plastic member 40 is attached to the outer surface of the inner label member 60 without being adhered, and is in close contact with the container body 10 so as not to move or rotate. The plastic member 40 is thinly stretched on the outer surface of the inner label member 60 to cover the inner label member 60. As shown in FIG. 20, the plastic member 40 is provided over the entire circumferential direction so as to surround the container body 10, and has a substantially circular horizontal cross section.
[0185]
　In addition, the configurations of the container body 10 and the plastic member 40 are substantially the same as those in the above-described first embodiment, and thus detailed description thereof will be omitted here.
[0186]
(Composite Preform 70)
　Next, the configuration of the composite preform 70 according to the present embodiment will be described with reference to FIG.
[0187]
　As shown in FIG. 21, the composite preform 70 includes a preform 10a made of a plastic material, a bottomed cylindrical inner label member 60a provided in close contact with the outer side of the preform 10a, and an inner label member 60a. It is composed of a plurality of layers provided in close contact with the outside and has a bottomed cylindrical plastic member 40a.
[0188]
(Inner Label Member 60a) The
　inner label member 60a is in close contact with the outer surface of the preform 10a, and is in close contact with the preform 10a without easily moving or rotating. The inner label member 60a is provided over the entire circumferential direction so as to surround the preform 10a, and has a substantially circular horizontal cross section.
[0189]
　The inner label member 60a may be designed or printed in advance. For example, in addition to the design, product name, etc., character information such as the name of the content liquid, the manufacturer, and the name of the raw material may be described. In this case, it is possible to display images and characters on the composite container 10A without separately attaching a label or the like to the container body 10 after blow molding. For example, an inner label member 60a may be provided on all or a part of the body portion 20a of the preform 10a so that an image or characters can be displayed on the body portion 20 of the container body 10 after molding. This eliminates the need for a step of attaching a label using a labeler after sealing the container, so that the manufacturing cost can be suppressed and the yield can be prevented from being lowered.
[0190]
　As such an inner label member 60a, a film such as a polyester resin, a polyamide resin, a polyaramid resin, a polypropylene resin, a polycarbonate resin, a polyacetal resin, or a fluorine resin can be used. The inner label member 60a may be made of the same material as the preform 10a and / or the plastic member 40a, or may be made of a different material.
[0191]
　Also, various materials described below can be used as the inner label member 60a.
[0192]
　For example, the inner label member 60a may be made of a material having a gas barrier property such as an oxygen barrier property or a water vapor barrier property. In this case, without using a multilayer preform or a preform containing a blended material as the preform 10a, the gas barrier property of the composite container 10A is enhanced, the content liquid is prevented from being deteriorated by oxygen, and the content is evaporated by water vapor. Can be prevented from decreasing. As such a material, PE, PP, MXD-6, EVOH or an oxygen absorbing material such as a fatty acid salt may be mixed with these materials.
[0193]
　Further, the inner label member 60a may be made of a material having a light barrier property such as ultraviolet rays. In this case, it is possible to enhance the light barrier property of the composite container 10A and prevent the content liquid from being deteriorated by ultraviolet rays or the like without using a multilayer preform or a preform containing a blend material as the preform 10a. As such a material, a blend material or a material in which a light-shielding resin is added to PET, PE, or PP can be considered.
[0194]
　The inner label member 60a may be made of a material having a higher heat retention property or a lower heat retention property (a material having a lower heat conductivity) than the plastic material forming the container body 10 (preform 10a). In this case, it is possible to make it difficult for the temperature of the content liquid to be transmitted to the surface of the composite container 10A without increasing the thickness of the container body 10 itself. Thereby, the heat retaining property or the cold retaining property of the composite container 10A is enhanced. As such a material, foamed polyurethane, polystyrene, PE, PP, phenol resin, polyvinyl chloride, urea resin, silicone, polyimide, melamine resin and the like can be considered.
[0195]
　On the other hand, the plastic member 40a is attached to the outer surface of the inner label member 60a without being adhered to the preform 10a so as not to move or rotate. The plastic member 40a is provided over the entire circumferential direction so as to surround the preform 10a, and has a substantially circular horizontal cross section.
[0196]
　In this case, the inner label member 60a and the plastic member 40a are provided so as to cover the entire body portion 20a except for the portion 13a corresponding to the neck portion 13 of the container body 10 and the entire bottom portion 30a.
[0197]
　The inner label member 60a and the plastic member 40a may be provided in the entire area or a part of the area other than the mouth portion 11a. For example, the inner label member 60a and the plastic member 40a may be provided so as to cover the whole of the body portion 20a and the bottom portion 30a except the mouth portion 11a. Further, the inner label member 60a and the plastic member 40a are not limited to one each, and a plurality of inner label members 60a may be provided. For example, the two inner label members 60a and the plastic member 40a may be provided at two positions outside the body portion 20a.
[0198]
　Such a plastic member 40a may not have an action of contracting with respect to the preform 10a, or may have an action of contracting.
[0199]
　In the latter case, the plastic member (shrink tube) 40a may have an action of shrinking with respect to the preform 10a. It is preferable that the plastic member (shrink tube) 40a is used so that it shrinks (for example, heat shrinks) with respect to the preform 10a when an external action (for example, heat) is applied.
[0200]
　In addition, since the configurations of the composite container 10A and the composite preform 70 are substantially the same as those of the first embodiment described above, detailed description thereof will be omitted here.
[0201]
　Next, the shapes of the plastic member 40a and/or the inner label member 60a will be described.
[0202]
　As shown in FIG. 22 (a), the plastic member 40a (inner label member 60a) has a bottomed cylindrical shape as a whole, and has a cylindrical body portion 41 (body portion 61) and a body portion 41 (body portion). 61) and the bottom part 42 (bottom part 62) connected to 61. In this case, since the bottom portion 42 (bottom portion 62) of the plastic member 40a (inner label member 60a) covers the bottom portion 30a of the preform 10a, various functions are also provided for the bottom portion 30 in addition to the body portion 20 of the composite container 10A. And characteristics can be imparted.
[0203]
　Further, as shown in FIG. 22B, the plastic member 40a (inner label member 60a) has a circular tube shape (bottomless cylindrical shape) as a whole, and has a cylindrical body portion 41 (body portion 61). You may have. In this case, for example, an extruded tube can be used as the plastic member 40a (inner label member 60a).
[0204]
　Further, as shown in FIGS. 22 (c) and 22 (d), the plastic member 40a (inner label member 60a) may be manufactured by forming a film into a tubular shape and laminating its ends. good. In this case, as shown in FIG. 22(c), the plastic member 40a may be configured in a tubular shape (bottomless cylindrical shape) having a body portion 41 (body portion 61), and FIG. As shown in the above, the bottom portion 42 (bottom portion 62) may be bonded to form a bottomed cylinder shape.
[0205]
(Manufacturing Method of Composite Container 10A)
　Next, a manufacturing method (blow molding method) of the composite container 10A according to the present embodiment will be described with reference to FIGS. 23 (a) to 23 (f).
[0206]
　First, a preform 10a made of a plastic material is prepared (see FIG. 23 (a)).
[0207]
　Next, an inner label member 60a is provided on the outer side of the preform 10a, and a plastic member 40a is provided on the outer side of the inner label member 60a, which is composed of a plurality of layers and at least one of the plurality of layers is a colored layer. .. As a result, a composite preform 70 having the preform 10a, the inner label member 60a adhered to the outside of the preform 10a, and the plastic member 40a adhered to the outside of the inner label member 60a is produced (FIG. 23). (See (b)). In this case, the inner label member 60a has a bottomed cylindrical shape as a whole, and has a cylindrical body portion 61 and a bottom portion 62 connected to the body portion 61.
[0208]
　At this time, even if the inner label member 60a and the plastic member 40a having an inner diameter that is the same as or slightly smaller than the outer diameter of the preform 10a are pressed into the preform 10a, the inner label member 60a and the plastic member 40a can be brought into close contact with the outer surface of the preform 10a. good. Alternatively, a heat-shrinkable inner label member 60a and a plastic member 40a are provided on the outer surface of the preform 10a, and the inner label member 60a and the plastic member 40a are heat-shrinked by heating to 50 ° C. to 100 ° C. It may be closely attached to the outer surface of the preform 10a.
[0209]
　Alternatively, a plastic member 40a may be provided in advance around the inner label member 60a, and the inner label member 60a and the plastic member 40a may be integrally attached to the outside of the preform 10a. Alternatively, the inner label member 60a may be provided on the outer side of the preform 10a, and then the plastic member 40a may be provided on the outer side of the inner label member 60a.
[0210]
　In this way, a series of steps for producing the composite preform 70 by bringing the plastic member 40a into close contact with the outside of the preform 10a and the inner label member 60a in advance to prepare the composite preform 70 (FIG. 23 (FIG. 23). It is possible to carry out a) to (b)) and a series of steps (FIGS. 23(c) to (f)) for manufacturing the composite container 10A by blow molding at different places (factory etc.).
[0211]
　Next, the composite preform 70 is heated by the heating device 51 (see FIG. 23 (c)).
[0212]
　Subsequently, the composite preform 70 heated by the heating device 51 is sent to the blow molding die 50. The composite container 10A is molded using this blow molding die 50, and in the same manner as in the case of the first embodiment described above, the container body 10 and the inner label member provided on the outer surface of the container body 10. A composite container 10A including 60 and the plastic member 40 provided on the outside of the inner label member 60 is obtained (see FIGS. 23D to 23F).
[0213]
　In addition, the manufacturing method (blow molding method) of the composite container 10A according to the present embodiment is substantially the same as that of the first embodiment described above, and thus detailed description thereof will be omitted here.
[0214]
(Modified Example of Manufacturing Method of Composite Container 10A)
　Next, a modified example of the manufacturing method (blow molding method) of the composite container 10A according to the present embodiment will be described with reference to FIGS. The modified examples shown in FIGS. 24(a) to 24(f) are those in which the plastic member 40a has a function of contracting with respect to the preform 10a (contraction tube), and other configurations are shown in FIGS. It is substantially the same as the form shown in (f). 24(a) to 24(f), the same parts as those in FIGS. 23(a) to 23(f) are designated by the same reference numerals, and detailed description thereof will be omitted.
[0215]
　First, a preform 10a made of a plastic material is prepared (see FIG. 24(a)).
[0216]
　Next, the inner label member 60a is provided on the outer side of the preform 10a, and the plastic member (shrink tube) 40a is provided on the outer side of the inner label member 60 (see FIG. 24(b)). The inner label member 60 and the plastic member (shrinkable tube) 40a are attached so as to cover the entire region of the body portion 20a except the portion corresponding to the neck portion 13 of the container body 10 and the entire region of the bottom portion 30a. At least a part of the plastic member (shrinkable tube) 40a may be semitransparent or transparent.
[0217]
　In this case, a plastic member (shrink tube) 40a is provided around the inner label member 60a in advance, and the inner label member 60a and the plastic member (shrink tube) 40a are integrally attached to the outside of the preform 10a. Is also good. Alternatively, the inner label member 60a may be provided on the outer side of the preform 10a, and then the plastic member (shrink tube) 40a may be provided on the outer side of the inner label member 60.
[0218]
　Next, the preform 10a, the inner label member 60a, and the plastic member (shrink tube) 40a are heated by the heating device 51 (see FIG. 24C). At this time, the preform 10a, the inner label member 60a, and the plastic member (contractile tube) 40a are uniformly heated in the circumferential direction by the heating device 51 while rotating with the mouth 11a facing downward. The heating temperature of the preform 10a, the inner label member 60a, and the plastic member (shrinkable tube) 40a in this heating step may be, for example, 90°C to 130°C.
[0219]
　By heating the plastic member (shrinkable tube) 40a in this manner, the plastic member (shrinkable tube) 40a is thermally shrunk and adheres to the outside of the preform 10a (see FIG. 24(c)). When the plastic member (shrink tube) 40a itself has shrinkage, the plastic member (see FIG. 24B) when the plastic member (shrink tube) 40a is provided on the outside of the inner label member 60a. The shrink tube) 40a may be in close contact with the outside of the inner label member 60a.
[0220]
　Subsequently, the preform 10a, the inner label member 60a, and the plastic member (shrink tube) 40a heated by the heating device 51 are sent to the blow molding die 50 (see FIG. 24D).
[0221]
　The preform 10a, the inner label member 60a, and the plastic member (shrink tube) 40a are molded using the blow molding die 50, and in substantially the same manner as in the cases of FIGS. 23 (a) to 23 (f) described above. A composite container 10A including the container body 10, the inner label member 60 provided on the outer surface of the container body 10, and the plastic member (shrinkable tube) 40 provided on the outer side of the inner label member 60 is obtained (FIG. 24 (d) to (f)).
[0222]
(Other Modifications of the Method for Manufacturing the Composite Container 10A)
　Next , another modification of the method for manufacturing the composite container 10A (blow molding method) according to the present embodiment will be described with reference to FIGS. 25 (a) to 25 (g). .. In the modification shown in FIGS. 25A to 25G, the plastic member 40a has a function of shrinking with respect to the preform 10a (shrink tube), and the preform 10a and the plastic member (shrink tube) 40a are It is heated in stages, and other configurations are substantially the same as those shown in FIGS. 23 (a) to 23 (f). In FIGS. 25 (a) to 25 (g), the same parts as those in FIGS. 23 (a) to 23 (f) are designated by the same reference numerals, and detailed description thereof will be omitted.
[0223]
　First, a preform 10a made of a plastic material is prepared (see FIG. 25(a)).
[0224]
　Next, the inner label member 60a is provided on the outer side of the preform 10a, and the plastic member (shrinkable tube) 40a is provided on the outer side of the inner label member 60 (see FIG. 25B). The plastic member (shrinkable tube) 40a is attached so as to cover the entire body portion 20a except for the portion corresponding to the neck portion 13 of the container body 10 and the entire bottom portion 30a. At least a part of the plastic member (shrinkable tube) 40a may be semitransparent or transparent.
[0225]
　In this case, a plastic member (shrink tube) 40a is provided around the inner label member 60a in advance, and the inner label member 60a and the plastic member (shrink tube) 40a are integrally attached to the outside of the preform 10a. Is also good. Alternatively, the inner label member 60a may be provided on the outer side of the preform 10a, and then the plastic member (shrink tube) 40a may be provided on the outer side of the inner label member 60.
[0226]
　Next, the preform 10a, the inner label member 60a, and the plastic member (shrink tube) 40a are heated by the first heating device 55 (see FIG. 25C). At this time, the heating temperature of the preform 10a, the inner label member 60a, and the plastic member (shrinkable tube) 40a may be, for example, 50°C to 100°C.
[0227]
　When the plastic member (shrink tube) 40a is heated, the plastic member (shrink tube) 40a is heat-shrinked and comes into close contact with the outside of the preform 10a. As a result, a composite preform 70 having a preform 10a, an inner label member 60a adhered to the outside of the preform 10a, and a plastic member (shrink tube) 40a adhered to the outside of the inner label member 60a is obtained. (See FIG. 25(c)).
[0228]
　In this way, by using the first heating device 55 to heat and closely adhere the plastic member (shrinkable tube) 40a to the outside of the preform 10a and the inner label member 60a in advance, the composite preform 70 is prepared. A series of steps for manufacturing the composite preform 70 (FIGS. 25(a) to (c)) and a series of steps for manufacturing the composite container 10A by blow molding (FIGS. 25(d) to (g)) are separately performed. It becomes possible to carry out at a place (factory etc.).
[0229]
　Next, the composite preform 70 is heated by the second heating device 51 (see FIG. 25 (d)). At this time, the composite preform 70 is uniformly heated in the circumferential direction by the second heating device 51 while rotating with the mouth 11a facing downward. The heating temperature of the preform 10a, the inner label member 60a, and the plastic member (shrinkable tube) 40a in this heating step may be, for example, 90°C to 130°C.
[0230]
　Subsequently, the composite preform 70 heated by the second heating device 51 is sent to the blow molding die 50 (see FIG. 25(e)).
[0231]
　The composite preform 70 is molded using the blow molding die 50, and is provided on the container body 10 and the outer surface of the container body 10 in substantially the same manner as in the cases of FIGS. 23 (a) to 23 (f) described above. A composite container 10A including an inner label member 60 and a plastic member (shrinkable tube) 40 provided outside the inner label member 60 is obtained (see FIGS. 25(e) to (g)).
[0232]
　As described above, according to the present embodiment, by performing blow molding on the composite preform 70 in the blow molding mold 50, the preform 10a of the composite preform 70, the inner label member 60a, and the plastic The manufacturing member 40a is integrally expanded to manufacture a composite container 10A including the container body 10, the inner label member 60, and the plastic member 40. Therefore, the inner label member 60 can be provided in advance on the composite container 10A at the stage of manufacturing the composite container 10A using the preform 10a. Therefore, it is not necessary to provide a step of filling the composite container 10A with the content liquid, sealing the container, and then labeling with a labeler. As a result, the manufacturing cost for manufacturing the final product can be suppressed.
　In addition, it is possible to prevent the yield from being lowered when the final product is manufactured due to a defect of the labeler or the like.
[0233]
　Further, according to the present embodiment, the preform 10a (container body 10) and the plastic member 40a (plastic member 40) can be configured as separate members. Therefore, various functions and characteristics can be freely imparted to the composite container 10A by appropriately selecting the type and shape of the plastic member 40.
[0234]
　Further, according to the present embodiment, when the composite container 10A is manufactured, a general blow molding apparatus can be used as it is, so that it becomes necessary to prepare a new molding facility for manufacturing the composite container 10A. Absent.
[0235]
Modification of
　Second Embodiment Next, a modification of the present invention will be described with reference to FIGS. 26, 27 and 28A to 28F.
[0236]
　The modified examples shown in FIGS. 26, 27 and 28 (a) to 28 (f) do not have a body and a bottom as the inner label member 60a and the plastic member 40a, but have a cylindrical inner label member 60a and The plastic member 40a is used.
[0237]
　In the composite container 10A shown in FIG. 30, the inner label member 60 and the plastic member 40 extend from the shoulder portion 12 of the container body 10 to the lower portion of the body portion 20, but do not reach the bottom portion 30. Further, in the composite preform 70 shown in FIG. 31, the inner label member 60a and the plastic member 40a are adhered so as to cover only the body portion 20a of the preform 10a. It covers an area excluding a portion 13a corresponding to the neck portion 13 of the main body 10 and a portion corresponding to the lower portion of the body portion 20a.
[0238]
　The other configurations in FIGS. 26, 27 and 28 (a) to 28 (f) are substantially the same as the embodiments shown in FIGS. 19 to 25. 26, 27 and 28(a) to (f), the same parts as those in the embodiment shown in FIGS. 19 to 25 are designated by the same reference numerals and detailed description thereof will be omitted.
[0239]
　In addition, the configuration and manufacturing method of the composite container 10A and the configuration and manufacturing method of the composite preform 70 are substantially the same as those of the embodiments shown in FIGS. 19 to 25, and detailed description thereof will be omitted. 26, 27 and 28(a) to (f), a plastic member 40 having a function of contracting with respect to the preform 10a may be used.
The scope of the claims
[Claim 1]
　A composite container 　comprising
　a container body made of a plastic material and
a plastic member provided on an outer surface of the
　container body , wherein the container body and the plastic member are integrally expanded by blow molding to obtain the plastic member
　. A composite container characterized in that the member comprises a colored layer and / or a printed layer that has been printed.
[Claim 2]
　The composite container according to claim 1, wherein the plastic member has an action of contracting with respect to the container body.
[Claim 3]
　In the composite container,
　a container body made of plastic material,
　and a plastic member provided on the outer surface of the container body,
　the container body and the plastic member is expanded integrally by blow molding,
　the container body Is provided with a colored layer containing a resin material and a coloring agent.
[Claim 4]
　The composite container according to claim 3, wherein the plastic member has an action of contracting with respect to the container body.
[Claim 5]
　In the composite preform, a preform
　made of a plastic material , and
　a plastic member provided so as to surround the outside of the preform, the
　plastic member is adhered to the outside of the preform,
　A composite preform, characterized in that the plastic member comprises a colored layer and/or a printed layer on which printing is performed.
[Claim 6]
　The composite preform according to claim 5, wherein the plastic member has an action of contracting with respect to the preform.
[Claim 7]
　The composite preform includes a preform
　made of a plastic material and
　a plastic member provided so as to surround the outside of the preform, and the
　plastic member is in close contact with the outside of the preform.
　A composite preform characterized in that the preform comprises a colored layer containing a resin material and a colorant.
[Claim 8]
　The composite preform according to claim 7, wherein the plastic member has an action of contracting with respect to the preform.
[Claim 9]
　For manufacturing a composite container having the preform and a plastic member adhered to the outside of the preform by being attached so as to surround the outside of the preform and being heated integrally with the preform. A plastic member, characterized in that it has
　at least a tubular body covering the body of the preform, and comprises a
　colored layer and / or a printed printing layer. Parts made.
[Claim 10]

　A step of preparing a preform made of a plastic material in a 　method for manufacturing a composite container, a step
　of providing a plastic member on the outside of the preform , a step of providing a
　printing region on the surface of the plastic member, the
　preform, and A step of heating the plastic member and inserting the
　plastic member into a blow molding die; and performing blow molding of the preform and the plastic member in the blow molding die to obtain the preform and the plastic A
method for manufacturing a composite container , which comprises a step of expanding a manufacturing member as a unit .
[Claim 11]
　The method for manufacturing a composite container according to claim 10, wherein the printing area is formed by an inkjet method.
[Claim 12]
　In the method for manufacturing a composite container,
　a step of preparing a preform made of a plastic material, a step
　of providing a plastic member having a printing region provided on the surface in advance on the outside of the
　preform, the preform and the plastic The
　preform and the plastic member are made by heating the member and inserting the member into the blow molding die and performing blow molding on the preform and the plastic member in the blow molding die. A
method for manufacturing a composite container , which comprises a step of expanding as a unit .
[Claim 13]
　The method for manufacturing a composite container according to claim 12, wherein the printed region is formed by an inkjet method.
[Claim 14]
　In the method for manufacturing a composite container,
　a step of preparing a preform made of a plastic material, a step
　of providing a plastic member on the outside of the preform , a step
　of heating the preform and the plastic member, and a blow molding die And a step
　of expanding the preform and the plastic member as a unit by performing blow molding on the preform and the plastic member in the blow molding die
　. A
method for manufacturing a composite container , which comprises a step of providing a printed area on the surface of a member .
[Claim 15]
　The method for manufacturing a composite container according to claim 14, wherein the printed region is formed by an inkjet method.