Technical field
[0001]
　The present invention relates to a container having an opening formed. Further, the present invention includes a container having an opening formed, and a lid joined to the container to cover the opening, to the container with lid and a manufacturing method thereof comprises a.
Background technique
[0002]
　Recently, as a container with an opening for accommodating the food and chemical products are formed, even after Disconnect the lid from the container, which is configured to be able to cover the opening of the container stably it has been proposed . Patent Document 1, the container having a cover frame which is configured to be separable from the tray and the tray, it is proposed to provide a cover foil which is welded to the upper surface of the upper surface and the cover frame of the tray. The container, when removing the cover foil from the tray, and is configured to cover frame together with the cover foil is also removed from the tray. The cover frame is configured to be snapped against the tray. Therefore, covering again the tray cover foil is removed from the tray, and by fixing by snap the cover frame is welded to the cover foil with respect to the tray, to cover the opening of the container again stable it can.
CITATION
Patent Document
[0003]
Patent Document 1: JP-T 2014-502584 Patent Publication
Disclosure of the Invention
[0004]
　In Patent Document 1 described above, when covering the opening of the container again, but is fixed by snap the cover frame with respect to the tray, the resealing properties is not sufficient in actuality.
[0005]
　The present invention aims at providing such a problem effectively be solved containers and Futazuke container and manufacturing method of the container with lid.
[0006]
　The present invention provides a container having an opening formed has a bottom surface, and the erected sides from the bottom, and a flange portion provided continuously to the upper portion of the side surface, wherein the flange portion, an inner portion which is continuously provided continuously to the side over one circumference, an outer portion located outside of the inner portion, provided between the inner portion and the outer portion, said inner portion and said outer portion anda connecting portion connecting the upper surface of the outer portion is positioned below the lower surface of the inner portion, the outer portion, a protrusion that protrudes inward from the outer end of the inner portion provided was, it is a container.
[0007]
　In the container of the present invention, the projection may be projected to the only 0.1 mm ~ 1.0 mm from the outer portion end inner portion side of the inner portion.
[0008]
　In the container of the present invention, the container may have a thermoplastic resin.
[0009]
　In the container of the present invention, the thickness of the connecting portions may be smaller than the thickness of the thickness and the outer portion of the inner portion.
[0010]
　In the container of the present invention, the connecting portion may be formed intermittently along the inner portion over a circumference.
[0011]
　In the container of the present invention, the connecting portion, the continuously formed along an inner portion may function as a hinge portion.
[0012]
　In the container of the present invention, the connecting portion includes the pair of the outer portion and connects the inner portion and the outer portion to define a rotation axis for rotating relative to the inner part hinge portion, some of the inner portion may protrude outward from the rotation axis. The rotating shaft, for example, through a portion located most central point closer of the opening of one of the hinge portion, and a portion located in the most central point side of the said opening of the other of said hinge portion is a straight line.
[0013]
　In the container of the present invention, the portion that protrudes outward from the rotational axis of the inner portion, the dimension in the direction perpendicular to the rotating shaft is preferably 3mm or more.
[0014]
　In the container of the present invention, the portion that protrudes outward from the rotational axis of the inner portion, the dimension in the direction perpendicular to the rotation axis is preferably 10mm or less.
[0015]
　In the container of the present invention, the inner portion has a polygonal shape including a plurality of sides and a plurality of corners, the pair of hinge portions of the connecting portion, one of the sides the rotary shaft of the inner part and said inner portion and said outer portion may be linked so as to be located outside the.
[0016]
　In the container of the present invention, the inner portion has a polygonal shape including a plurality of sides and a plurality of corners, the pair of hinge portions of the connecting portion, one of said corners the rotation of the inner part it may be connected between the inner portion and the outer portion to at least partially located outside the axis.
[0017]
　The present invention includes a container having an opening formed, and a lid joined to said container so as to cover the opening of the container, said container includes a bottom surface, a side surface that is erected from the bottom surface has a flange portion provided continuously to the upper part of the side surface, said flange portion includes an inner portion which is continuously provided continuously to the side over one circumference, an outer portion located outside of the inner part wherein the said lid, the upper surface of the inner portion are continuously joined over one round, and the upper surface of the outer portion is at least partially joined, the upper surface of the inner portion, said the upper surface of the outer portion is located at least partially on the same plane, the lower surface of the outer portion positioned below the lower surface of the inner portion, the outer portion, the inner side than the outer end of the inner portion provided projections protruding, capped container A.
[0018]
　In the container with lid of the present invention, the flange portion further includes a connecting portion for connecting the inner portion and the outer portion, the connecting portion, the rotary shaft for rotating said outer portion to said inner portion It includes a pair of hinge portions and said inner portion to define connecting the said outer portion, a portion of the inner portion may protrude outward from the rotation axis.
[0019]
　In the container with lid of the present invention, the portion that protrudes outward from the rotation axis of the upper surface of the inner part may not be bonded to the lid.
[0020]
　In the container with lid of the present invention, the bonding force between the upper surface of the lid and the outer portion may be larger than the bonding force between the lid and the inner portion.
[0021]
　The present invention includes the steps of preparing a container of the above described, the step of placing a lid on the top surface of the inner portion of the container, while holding the lower surface of the outer portion of the container, the lid pressing the upper surface of the inner part downward by the hot plate through which the said not to the upper surface of the outer portion and the upper surface of the inner portion is positioned on the same plane, and the upper surface of the inner portion of the lid and and a step of welding to the upper surface of the outer portion, a method of manufacturing a container with a lid.
[0022]
　According to the present invention, it is possible to provide an excellent container and Futazuke container and manufacturing method of the container with lid in the initial sealing performance and resealing property.
BRIEF DESCRIPTION OF THE DRAWINGS
[0023]
[1] Figure 1 is an exploded view of members constituting the container with a lid in the embodiment of the present invention.
FIG. 2 is a perspective view showing a container before welding the lid.
FIG. 3 is a sectional view of a portion including a protruding portion of the container with a lid.
[4] FIG. 4 is a sectional view of a portion including a protruding portion of the front of the container welding the lid.
FIG. 5 is a sectional view of a portion including a connecting portion of the container with a lid.
FIG. 6 is an enlarged sectional view of a portion including a connecting portion of the front of the container welding the lid.
FIG. 7 is a plan view showing a container.
[FIG. 8A] Figure 8A is a diagram showing a method of manufacturing the container.
[Figure 8B] Figure 8B is a diagram showing a method of manufacturing the container.
[Figure 8C] Figure 8C is a diagram showing a method of manufacturing the container.
FIG 9A] FIG 9A is a diagram illustrating the method of manufacturing the container.
[FIG. 9B] FIG 9B is a diagram illustrating the method of manufacturing the container.
FIG 9C] FIG 9C is a diagram illustrating the method of manufacturing the container.
[10] FIG. 10 is an enlarged view of Figure 9A.
[11] Figure 11 shows the effect in the embodiment of the present invention.
[12] FIG 12 is a diagram illustrating a modification of the container with a lid.
[13] FIG 13 is a diagram illustrating a modification of the container with a lid.
[Figure 14A] Figure 14A is a diagram illustrating a modification of the container with a lid.
FIG 14B] FIG 14B is a diagram showing an opened state of a lid of a container with lid of FIG. 14A.
[15] FIG 15 is a plan view showing a first junction portion and the second joining portion of the inner and outer portions of the flange portion.
[16] FIG 16 is a plan view showing a modified example of the container.
[17] FIG 17 is a view showing a container with lid comprising a container and a lid shown in FIG. 16.
[18] FIG. 18 is a sectional view of a portion including a hinge portion of the connecting portion of the container with lid of FIG. 17.
[19] FIG 19 is a diagram showing an operation of the container with lid of FIG. 17.
[20] FIG 20 is a diagram illustrating a modification of the container.
[21] FIG 21 is a diagram illustrating a modification of the container.
[22] FIG 22 is a diagram illustrating a modification of the container.
[23] FIG 23 is a view showing a container with lid comprising a container and a lid shown in Figure 22.
[24] FIG 24 is a diagram illustrating a modification of the container.
[25] FIG 25 is a view showing a container with lid comprising a container and a lid shown in Figure 24.
DESCRIPTION OF THE INVENTION
[0024]
　
　Hereinafter, with reference to FIGS. 1 to 11 and 15, will be described embodiments of the present invention. Referring first to FIGS. 1 and 2, it will be described container 10 overall with lid in this embodiment.
[0025]
　(Capped container)
　FIG. 1 is an exploded view of members constituting a container with lid 10, Figure 2, a container 20 of the container with lid 10, a container with the lid 50 is not bonded it is a perspective view showing a 20. Container with lid 10 includes a container 20 with an opening 28 is formed, a lid 50 joined to the container 20 so as to cover the opening 28 of the container 20. In the present specification, the term "bonding" is a concept including both welding and adhesion. The term "welding", by at least partially melting at least one of the container 20 or lid 50, which means that mounting the lid 50 to the container 20. Also the "glue" is such an adhesive, by using a separate component from the container 20 and a lid 50, which means that mounting the lid 50 to the container 20.
[0026]
　Also herein, a "capped container", unless otherwise indicated, after bonding the lid 50 to the container 20, and specifically a phenomenon where not even lid 50 removed yet once. Also in the following description, to a container 20 after cap 50 is removed, also referred to as open container 21.
[0027]
　(Container)
　then vessel 20 will be described. As shown in FIGS. 1 and 2, the container 20 includes a bottom surface 22, a side surface 24 provided upright from the bottom surface 22 so as to spread over one circumference along an outer edge 22e of the bottom surface 22, which is provided continuously on the top side 24 It has a flange portion 26, a. The lid 50 described above are joined to the flange portion 26 of the container 20. In Figures 1 and 2, the flange portion 26 is provided continuously to the upper edge of the side surface 24, are shown examples extending horizontally outwardly. In this specification, terms such as "side", "top", "upper" and later "top", "bottom surface", "horizontal", as the bottom 22 of the container 20 is positioned below container with lid 10 relative to the state of the container with lid 10 and the container 20 is placed, the container 20 is representative of the position and direction of the lid 50 and their components.
[0028]
　1 and 2, the bottom surface 22 and side surfaces 24 of the container 20 to have a rectangular contour is shown an example constituted openings 28 in the horizontal direction. In the present embodiment, it is chamfered corners of the square, while others corner is a convex arc shape toward the outside are included in the concept of a square. Incidentally, as long as it is possible to accommodate the desired contents into the container 20, is not the shape of the container 20 is particularly limited. For example the flange 26 defining the opening 28 may have a contour of a rectangular or polygonal shape in the horizontal direction. The The contours of the flange 26 and the lid 50 of the bottom 22 may be a similar shape, it may not be similar.
[0029]
　Contents contained in the container 20 is not particularly limited, examples of the contents, for example, snacks such as nuts, can be mentioned dried fruits, prepared foods, snacks and the like. Incidentally, as described later, the container with lid 10 according to this embodiment, has the better the initial sealing performance and a feature. Further, as described later, the container with lid 10 according to this embodiment, the unsealing container 21 after the lid 50 is removed, by covering the lid 50 again, the opening of the open container 21 by using the lid 50 28 that can be covered, that is, as a further feature the better the resealing properties. Note that "initial sealability" during the in container with lid 10, i.e. in a still state not even cover 50 removed once after bonding the lid 50 to the container 20, the flange 26 and the lid 50 of the container 20 which means of adhesion.
[0030]
　[Flange]
　Hereinafter, with reference to FIGS, the flange portion 26 of the container 20 will be described in detail. Here, FIG. 3 is a cross-sectional view of a portion including a later-described projection 36 of the container with lid 10, FIG. 4 is an enlarged sectional view of a portion including the projection 36 in front of the container 20 for welding the cover 50, FIG. 5 is a sectional view of a portion, FIG 6 including the connecting portion 40 to be described later of the container with lid 10 is an enlarged sectional view of a portion including a connecting portion of the front of the container 20 which is welded to lid 50.
[0031]
　The Figure 7 is a plan view showing the container 20, FIG. 15 is a plan view showing a container with lid 10. Note that FIG. 15, in order to avoid complexity, and is drawing is omitted except the inner portion 30 and outer portion 35 of the flange 26.
[0032]
　As shown in FIGS. 1 to 7, the flange 26 has an inner portion 30 which are continuously provided continuously to the side surface 24 over one round, the outer portion 35 located outside the inner portion 30, inner portion 30 and outer provided between the portion 35 includes a connecting portion 40 for connecting the inner portion 30 and outer portion 35, a. In the present specification, "outside" means the side far from the opening 28 of the container 20 in the horizontal direction. Also the "inner" means the side near the opening 28 of the container 20 in the horizontal direction.
　As shown in FIGS. 3 to 5, the container with lid 10 according to this embodiment, when removing the connecting portion 40 the lid 50 from the container 20 by breaking the container 20, the outer portion 35 together with the lid 50 the container 20 ( so as to be detached from the opened container 21) is constructed. Therefore in the state of the container with lid 10, the lid 50 is at least partially joined to the upper surface 35a of the outer part 35.
[0033]
　As shown in FIG. 7, the connecting portion 40 is provided intermittently six along the inner portion 30 over one lap. The connecting portion 40 may be continuously provided along the inner portion 30 over one lap. Also the outer part 35, is continuously extended through the connecting portion 40 to the inner portion 30 over one lap. The lower surface 50b of the lid 50 as shown in FIG. 15, the upper surface 30a of the inner portion 30 are continuously joined over one lap. By configuring the flange portion 26 and the lid 50 of the thus container 20 can seal the opening 28 of the container 20 without clearance. That is, it is possible to express the initial sealing properties.
[0034]
　As shown in FIG. 1, the flange portion 26 has an outer portion 35 extending continuously over one revolution. While the outer portion 35 is maintained to be at least partially joined to the lid 50, as long as it is possible to remove the lid 50 from the container 20, the outer portion 35 the shape and, the lower surface 50b and the outer portion 35 of the lid 50 never specific state of bonding is particularly limited between the upper surface 35a. For example, in Figure 1, the outer portion 35 along the inner portion 30 over one round extend continuously, the lower surface 50b of the lid 50, the upper surface 35a of the outer portion 35, an example being continuously joined over one lap It indicated, but not be limited to this. Although not shown, in as much as possible that the outer portion 35 when removing the lid 50 from the container 20 is maintained to be at least partially joined to the lid 50, the outer portion 35, along the inner portion 30 over one round it may extend intermittently Te. In this case, the lower surface 50b of the lid 50, the upper surface 30a of the inner portion 30 are continuously joined over one round, and are at least partially joined to the upper surface 35a of the outer part 35. Even in this case, the junction between the upper surface 30a of the lower surface 50b and the inner portion 30 of the lid 50, the opening 28 of the container 20 can be sealed without any gaps. That is, it is possible to express the initial sealing properties. Further, the junction between the upper surface 35a of the lower surface 50b and the outer portion 35 of the lid 50, that the outer portion 35 when removing the lid 50 from the container 20 is maintained to be at least partially joined to the lid 50 it can.
[0035]
　In FIG. 15, the first joint portion is a portion where the upper surface 30a is joined on the lower surface 50b and the inner portion 30 of the lid 50 is indicated by reference numeral 30A, the upper surface 35a of the bottom surface 50b and the outer portion 35 of the lid 50 DOO second joint portion is indicated by reference numeral 35A is a junction portion. In the present embodiment, is formed such that the first joining portion 30A does not reach the inner and outer edges of the inner portion 30, an example in which the second joint portion 35A is formed so as not to reach the inner and outer edges of the outer part 35 Although shown, not limited to this, and the first joint portion 30A may be formed to reach the inner and / or outer edge of the inner part 30, the second joint portion 35A is the inner edge of the outer portion 35 or and / or it may be formed to reach the outer edge.
[0036]
　Junction between the lid 50 and the flange portion 26, while maintaining a state in which the outer portion 35 is at least partially joined to the lid 50, so that it is possible to remove the lid 50 from the container 20, need to be configured is there. On the other hand, the bonding force of the second junction portion 35A is, bonding strength between the other portion and the lid 50 of the container 20, for example, if the first is smaller than the bonding strength of the joint portion 30A, to remove the lid 50 from the container 20 when applying force to the knob portion 26x of the flange portion 26 of the container 20, the lid 50 can be considered that peeled off from the upper surface 35a of the outer portion 35 before the lid 50 is detached from the upper surface 30a of the inner portion 30 . In view of this, preferably, the bonding strength of the second junction portion 35A is to be greater than the bonding force of the first joint portion 30A, the container with lid 10 is constructed. Thereby, it is possible to prevent the lid 50 when removing the lid 50 from the container 20 is peeled off from the upper surface 35a of the outer part 35.
[0037]
　Bonding force of the first joint portion 30A and the second joint portion 35A can be measured using a Tensilon tensile tester (e.g., Ltd. Orientec Ltd., RTC-1310A).
[0038]
　Hereinafter, an example of a procedure for measuring the bonding strength.
[0039]
　First, a sample and a lid 50 and the flange portion 26 are joined is cut into 15mm width. Next, by peeling a portion of the lid 50 from the flange portion 26, sandwiching a portion of the lid 50 while gripping jig Tensilon, sandwiching the flange portion 26 at the other gripping jig. Then, at a tensile speed of 300 mm / min, angle between a portion and the flange portion 26 of the lid 50 is pulled to become 180 °. Then, the maximum value of the load is measured when the other parts of the lid 50 is separated from each portion of the flange portion 26, the bonding force between the parts of the lid 50 and the flange portion 26.
[0040]
　Incidentally, when the portion where the lid 50 and the flange portion 26 is not bonded is included in the pre-sample, may be omitted work for the lid 50 and the flange portion 26 partially peeled prior to measuring a load .
[0041]
　When calculating the bonding strength using the measuring method described above, the bonding strength of the second connecting portion 35A is preferably greater than 20 N, more preferably greater than 30 N, the bonding force of the first joint portion 30A is preferably as a 20N or less, and more preferably equal to or less than 15N.
[0042]
　The bonding strength of the second connecting portion 35A, specific configurations and methods for greater than the bonding strength of the first joint portion 30A is not be particularly limited. For example, the area and width of the second bonding portion 35A, be greater than the area and width of the first joining portion 30A is considered. Further, when joining the lid 50 to the flange 26 by welding caused by heat, the temperature when welding the lid 50 on the upper surface 35a of the outer portion 35, at the time of welding the lid 50 on the upper surface 30a of the inner portion 30 it may be higher than the temperature.
[0043]
　As described above, connecting portion 40 is a portion that is fractured from the container 20 when removing the lid 50. However, the strength of the connecting portion 40 is too large, the force exerted on the flange 26 in order to break the connection portion 40 becomes excessively large, as a result, the portion other than the connection portion 40 of the container 20 or break it is conceivable that result in or deformed. Thus connecting portion 40 is configured to be broken at an appropriate force. For example, as shown in FIG. 6, the inner portion 30, the outer portion 35 and the connecting portion 40, so that the thickness T3 of the connecting portion 40 is smaller than the thickness T2 of the thickness T1 and an outer portion 35 of the inner portion 30, is configured there.
[0044]
　In FIG. 3, in each of the inner portions 30 and outer portions 35, the upper surface 30a, 35a and lower surface 30b, 35b and a parallel to one another, this since the thickness T1, T2, T3 is constant regardless of the location Examples It is shown. However, it is not limited thereto, it is conceivable to thickness T1, T2, T3 varies depending on the position. For example, the upper surface 30a, 35a and lower surface 30b, cases can be considered 35b and are non-parallel. Further, as described later, the outer portion 35 is projection 36, by or has a reinforcing portion 37 and the wall portion 38, it is conceivable to thickness T1, T2, T3 varies depending on the position. In this case, the "thickness T3 of the connection portions 40 is smaller than the thickness T2 of the thickness T1 and an outer portion 35 of the inner portion 30 'has an average value of" thickness T3 is, the average value and the thickness T2 of the thickness T1 may also mean that smaller than the average value ". Or, "the maximum value of the thickness T3 is smaller than the maximum value of the maximum value and the thickness T2 of the thickness T1 'may mean that. The thickness T3 of the connecting portion 40 refers to the thickness along the horizontal direction of the connecting portion 40, the thickness thickness of the inner portion 30 and outer portion 35, which respectively along the vertical direction of the inner portion 30 and outer portion 35 Say.
[0045]
　Connecting portion 40 is likely to be broken as the thickness T3 is smaller. Therefore, considering the opening easiness of the container with lid 10, it is preferable that the thickness T3 of the connecting portion 40 is small. On the other hand, when the thickness T3 of the connecting portion 40 is too small, the container 20 in a state before the lid 50 is bonded, or, during the step of bonding the lid 50 to the container 20, the shock applied to the container 20 such as connecting portion 40 can be considered that become broken due to. Considering these points, preferably, the thickness T3 of the connecting portion 40 is set to 0.2mm or more and 0.8mm or less. Also preferably, the thickness T2 of the thickness T1 and an outer portion 35 of the inner portion 30, so that the thickness T3 of the connecting portion 40 is less than 50% of the thickness T2 of the thickness T1 and an outer portion 35 of the inner portion 30, is set . Thickness T2 of the thickness T1 and an outer portion 35 of the inner portion 30 is set to, for example, 0.5mm or more and 2.0mm or less.
[0046]
　As shown in FIGS. 4 and 6, the thickness T2 of the outer portion 35 may be larger than the thickness T1 of the inner portion 30. For example, the thickness T2 of the outer portion 35 is 1.5 times the thickness T1 of the inner portion 30, and more preferably at least 2 times.
[0047]
　Further, from the viewpoint of suppressing the ease and unintended rupture unsealing, connecting portion 40, it is preferable to provide 0.1% to 5.0% or less of the area of ​​the outer periphery of the inner portion 30 of the flange portion 26, 0 it is more preferable to provide the .3% to 3.0% or less of the area. As shown in FIG. 7, in this embodiment, the connecting portion 40 is provided 0.5% of the area of ​​the outer periphery of the inner portion 30.
[0048]
　The width W1 of the inner portion in order to enhance the sealing of the container 20 and the lid 50, is set in a range of more than 4 mm. The width W2 of the outer portion 35, as the lid 50 when removing the lid 50 from the container 20 is not separated from the outer portion 35 and outer portion 35 of the lid 50 during the step of bonding the lid 50 to the container 20 as it can be easily positioned on the top surface 35a of are preferably set. For example it is preferable to set the width W2 of the outer portion 35 than 3 mm. Thus, the outer portion 35 of the flange portion 26 the lid 50 can increase the production suitability when joining, further, it is possible to make the outer portion 35 easy to see knob when removing the lid 50 from the container 20. Further, a width W3 of the first joint portion 30A is set to 1mm or 2mm or less. The width W4 of the second junction portion 35A 2 mm or more, preferably set to at least 3 mm. The width W4 of the second connecting portion 35A is preferably to 1 or more times the width W3 of the first joint portion 30A, and more preferably 1.5 times or more. Thus, it is possible to easily ensure initial sealability, a lid 50 when removing the lid 50 from the container 20 can be difficult to separate from the outer portion 35.
[0049]
　Next, with respect to the container with lid 10, the inner portion 30 in the vertical direction, the position of the outer portion 35 and the connecting portion 40 will be described. In this embodiment, the portion in contact with the lower surface 50b of at least the lid 50 of the upper surface 35a of the upper surface 30a and the outer portion 35 of the inner portion 30 is located on the same plane. In FIGS. 3 and 5, when obtained by welding the cover 50 to the flange portion 26, the entire upper surface 35a of the entire region and the outer portion 35 of the upper surface 30a of the inner portion 30, an example which is located on the same horizontal plane is shown ing. Therefore, it is possible to uniformly bonded to the top surface 35a of the upper surface 30a and the outer portion 35 of the inner portion 30 of the lower surface 50b of the lid 50. That is, the cover 50 can be stably joined to the flange portion 26 of the container 20. Thus, that bonding strength between the flange portion 26 and the lid 50 of the container 20, can be suppressed from varying according to the position or an individual, and the container with lid 10 with excellent initial sealing performance it can.
[0050]
　Note that "and the upper surface 35a of the upper surface 30a and the outer part 35 of the inner portion 30 located on the same plane" of the end portion of the connecting portion 40 side of the upper surface 30a of the inner portion 30, and the position in the vertical direction, the difference between the position in the vertical direction of the end portion of the connecting portion 40 side of the upper surface 35a of the outer portion 35, and a 0.5mm or less, which means that more preferably 0.2mm or less.
[0051]
　Preferably, a portion in contact with the lower surface 50b of the lid 50 of the upper surface 30a of the inner portion 30, the angle formed between the portion in contact with the lower surface 50b of the lid 50 of the upper surface 35a of the outer portion 35, it is less than 30 degrees ± there.
[0052]
　Material and constituting the container 20, the manufacturing method of the container 20 are chosen so that the upper surface 35a of the outer portion 35 may be joined to at least partially the lower surface of the lid 50 50b. For example, by injection molding using a resin, a bottom surface 22, side surfaces 24 and the flange portion 26 may be integrally formed. As the resin constituting the container 20, it is possible to use a thermoplastic resin such as polypropylene or the like.
[0053]
　Next, the configuration of the flange portion 26 to enhance the resealing of the container with lid 10. As shown in FIG. 3, the lower surface 35b of the outer portion 35 of the flange portion 26 is the lower surface 30b of the inner portion 30 downwards, also the outer portion 35, protruding inward from the outer end portion 30e of the inner portion 30 projection 36 is provided. Therefore, it is possible to firmly fix the outer portion 35 to the inner portion 30. That is, it is possible to have a high resealing of opening the container 21. Such projections 36, in plan view, are provided a total of four in the four corners of the corner portions of the outer portion 35 (see FIG. 7).
[0054]
　Projection 36 is preferably protrudes inward portion 30 side outside of the end region 30e from 0.1mm or more 1.0mm or less of the inner portion 30, inwardly 0.5mm below the range of 0.2mm further preferably it protrudes portion 30 side. 4 shows the length from the outer end 30e of the inner portion of the projection 36 to the tip is shown at L1. If the length L1 from the outer end 30e to the tip of the inner part of the projection 36 is 0.1mm or less, resealing of the result it is difficult to sufficiently exhibit, if it less than 1.0mm, the outer it is difficult to remove the cover 50 in a state in which portions 35 are joined from the container 20.
[0055]
　Projection 36 is, for example, may be the lower surface 35b of the outer portion 35 can be provided above, provided in the region between the lower surface 35b of the lower surface 30b and the outer part 35 of the inner portion 30. By projection 36 is close to or contacts the lower surface 30b of the inner portion 30, it is possible to improve the resealing of the opening chamber 21. For example, in FIG. 3, the lower surface 30b and the projection 36 of the inner portion 30 is proximate the flange portion 26, a gap D1 is provided between the lower surface 30b and the projection 36 of the inner portion 30 of the flange portion 26 container 10 is shown with a lid, but is not limited thereto. A container 10 with a lid, the lower surface 36b and the projection 36 of the inner portion 30 of the flange portion 26 may abut. Regard open container 21 which is covered by the outer portion 35 the lid 50 in a state of being joined are same can be said. Further, the gap D1 is preferably set to 0.5mm or less. If the gap D1 is 0.5mm or less, it is possible to improve the resealing of the opening chamber 21.
[0056]
　Further, projection 36 is that it is preferable to provide in order to be able to contact 25 percent of the area of ​​the outer periphery of the inner portion 30 of the flange portion 26 is provided so as to be able to contact 50 percent of the area It is more preferable. Thus, it is possible to improve the resealing of the opening chamber 21. Further, projection 36 is that it is preferable to provide in order to be able to abut against the 5% area of ​​the outer periphery of the inner portion 30 of the flange portion 26 is provided so as to be able to abut 3% or less of the area It is more preferable. Thus, it is possible to the lid 50 in the state in which the outer portion 35 are joined easily removed from the container 20.
[0057]
　Will now be described a preferred embodiment of the container 20 with the lid 50 are not joined. As described above, FIG. 3 and FIG. 5 is a cross-sectional view of a container with lid 10, FIGS. 4 and 6 are sectional views of the container 20 with the lid 50 are not joined.
[0058]
　As shown in FIGS. 4 and 6, the container 20 with the lid 50 are not joined, the upper surface 35a of the outer portion 35 of the flange portion 26 is positioned lower than the upper surface 30a of the inner portion 30. Preferably, the upper surface 35a of the outer portion 35 of the flange portion 26 is positioned lower than the bottom surface 30b of the inner portion 30.
[0059]
　When welding the lid 50 to the container 20, as shown in FIGS. 4 and 6, the lower surface of the flange portion 26 of the container 20 held by the retainer 70, places the lid 50 on the flange 26 of the container 20. Here, the retainer 70, when welded with the flange portion 26 and the lid 50, so that the upper surface 35a of the upper surface 30a and the outer part 35 of the inner portion 30 of the flange portion 26 can be positioned on the same plane It is formed. Specifically, the retainer 70 has an inner portion 30 and abutting portion of the retainer 70 is formed so as to protrude from the outer portion 35 and abutting portion of the retainer 70. Then, the first heating plate 75 and the second heating plate 76 relative to the inner portion 30 and outer portion 35 of the flange portion 26 while holding the lower surface of the flange portion 26 of the container 20 by the retainer 70, the lid 50 upper to each drop from.
[0060]
　Thus, the upper surface 30a of the inner portion 30 through the lid 50 is pressed downward by the first heating plate 75. As a result, outer portion 35 of the flange portion 26 is relatively raised with respect to the inner portion 30, it is possible to position the upper surface 35a of the outer portion 35 to the inner portion 30 of the top surface 30a on the same plane. In this case, the lower surface 50b of the upper surface 35a and the cover 50 of the upper surface 30a and the outer portion 35 of the inner portion 30, is heated by welding between the retainer 70 and the first heating plate 75 and the second heating plate . In the above example, an example has been described using the first heating plate 75 and the second heating plate 76, respectively, may be heated using one of the hot plate.
[0061]
　During this time, the connecting portion 40 provided at six positions along the same direction between the inner portion 30 and outer portion 35 will remain bent between the inner portion 30 and outer portion 35. Or during the welding operation, it is conceivable to connecting portion 40 is broken from the inner part 30 or outer portion 35.
[0062]
　Thus the inner portion 30 and outer portion 35 and the lid 50, by heat welding between the retainer 70 and the first heating plate and the second heating plate 76, the lid comprising a container 20 and a lid 50 for with container 10 is obtained. If the connecting portion 40 as described above is broken from the inner part 30 or outer part 35, will not include the connecting portion 40 as a container 20 of the container with lid 10.
[0063]
　(Lid)
　will be described lid 50 joined to the container 20. The material constituting the lid 50, so that the lower surface 50b of the lid 50 can be joined to the upper surface 35a of the upper surface 30a and the outer portion 35 of the inner portion 30, is selected. For example the lid 50 includes a substrate layer, and the sealant layer constituting the lower surface 50b of the lid 50. The thickness of the lid 50 is made, for example, 20μm or more and 100μm or less.
[0064]
　The material for the substrate layer, a polyester resin such as polyethylene terephthalate, and polyamide resins such as nylon, can be used such as polypropylene. As the material constituting the sealant layer, it is possible to use a polypropylene or a mixed resin of polypropylene and polyethylene. Incidentally, when the substrate layer and the sealant layer comprises a polypropylene any, biaxially oriented polypropylene is used in the base layer, cast polypropylene is used in the sealant layer.
[0065]
　Incidentally, "mixed resin of polypropylene and polyethylene" described above is also referred easy peel sealant is a material having a relatively small bonding strength. Therefore, if the sealant layer of the lid 50 comprises a mixed resin of polypropylene and polyethylene, can be reliably joined to the upper surface 30a of the upper surface 35a and the inner portion 30 of the outer portion 35 of the flange 26 of the container 20 to the lower surface 50b of the lid 50 can. Also, if the sealant layer of the lid 50 comprises a mixed resin of polypropylene and polyethylene, the bonding force between the lid 50 and the flange portion 26 that is calculated by a method using the above-described tensile tester, a 20N or less it is preferable, more preferably equal to or less than 15N.
[0066]
　On the other hand, if the sealant layer of the lid 50 is constructed of polypropylene alone, the bonding strength is increased as compared with the case where a mixed resin of polypropylene and polyethylene is used.
[0067]
(Method of manufacturing a container)
　with reference to FIGS. 8A to 10 will be described next manufacturing method of the container 20. Hereinafter, an example of manufacturing the container 20 by injection molding.
[0068]
　First a first type 81 of the upper surface of the flange portion 26, (see FIG. 8A) the lower surface of the second mold 82 and is opposed to the flange portion 26, then the first mold 81 and the second mold 82 closes the, to form a predetermined cavity space (see FIG. 8B). Then the resin 83 in a molten state is injected injected from the gate 81a of the first mold 81 with respect to the cavity, to mold the container 20 by solidifying between the first mold 81 and second mold 82 (see Figure 8C). Resin 83, for example, it is a thermoplastic resin.
[0069]
　Then the second mold 82 to separate the first mold Te pulled while holding the container 20 on the second mold 82 (see FIG. 9A).
[0070]
　It is shown in an enlarged view showing the state in FIG. 10. As shown in FIG. 10, by the second die 82 to separate the first mold 81, a region of the flange portion 26 can be deformed upwardly and laterally is ensured.
[0071]
　That is, the outer portion 35, projection 36 which projects inside portion 30 side is provided, this projection 36 is penetrated into the second mold 82, the flange portion 26 on the second mold 82 by region that can be deformed upwardly and laterally is ensured, can be a container 20 having a projection 36 on the flange portion 26 from the second mold 82 is released.
[0072]
　Next, as shown in FIG. 9B, sticking out the bottom 22 of the container 20 by a first pin 82a provided on the second mold 82, protruding flange portion 26 by a second pin 82b.
[0073]
　In this case, since the spaced advance second type 82 from first mold 81, when the protruding flange portion 26 by a second pin 82b, the flange portion 26 can be deformed upwardly and laterally it is therefore possible to release the containers 20 from the second mold 82.
[0074]
　Next, as shown in FIG. 9C, the bottom 22 of the container 20 is attracted by the suction mechanism 85, it can be discharged to the outside of the container 20 from the first mold 81 and second mold 82 by the suction mechanism 85 .
[0075]
　In the present embodiment, the first mold 81 while the second mold 82 is shown an example which is disposed in a vertical direction, not limited to this, and the first mold 81 and the second mold 82 it may be arranged in a horizontal direction.
[0076]
　(Method of manufacturing a container with a lid)
　Next, an example of a method for manufacturing a container with lid 10.
[0077]
　By injection molding First, as described above, the bottom 22 is integrally formed, to form a container 20 having sides 24 and a flange portion 26. In this case, the container 20 has a structure before welding the lid 50 (see FIGS. 4 and 6). Further, to prepare a lid 50 having a contour corresponding to the flange portion 26 of the container 20. Then, the lower surface 35b of the outer portion 35 held by the retainer 70 of the flange 26 of the container 20 as described above, placing the lid 50 on the top surface 30a of the inner portion 30. Each lowering first heating plate 75 and the second heating plate 76 while holding the flange 26 of the container 20 relative to the inner portion 30 and outer portion 35 by the retainer 70. At this time, the inner portion 30 and the portion corresponding to the outer portion 35 of the flange 26 of the container 20 of the lid 50 is heated from the upper surface 50a side to melt the sealant layer of the lid 50. Thereby, it is possible to weld the lid 50 on the upper surface 35a of the upper surface 30a and the outer portion 35 of the inner portion 30 of the flange 26 of the container 20. At this time, the flange portion 26 may be melted.
[0078]
　Thus the container with lid 10 having a container 20 and the lid 50 is thus obtained. In this case, since the inner portion 30 is welded to the lid 50, it is possible to seal the opening 28 of the container 20 without clearance. That is, it is possible to express the initial sealing properties. Further, the upper surface 30a of the inner portion 30, the upper surface 35a of the outer part 35 is located at least partially on the same plane. Therefore, it is possible to the container with lid 10 with excellent initial sealing performance.
[0079]
　(Opening method of the container with a lid)
　Next, an example of a method of opening a container with lid 10.
[0080]
　First as shown at Fa in FIG. 1, a portion of the knob portion 26x of the flange portion 26 of the container 20, in addition to upward force, thereby breaking the connecting portion 40. The lid 50 from the upper surface 30a of the inner portion 30 is peeled off at the same time. Thus, as shown in FIG. 11, it is possible to cover 50 in a state where the outer parts 35 joined removed from the container 20, the container 20 and open the container 21. Incidentally, when producing a container with lid 10, when the connecting portion 40 is broken, the task of breaking the connecting portion 40 is omitted.
[0081]
　In the present embodiment, as described above, the lid 50 in the state in which the outer portion 35 are joined is removed from the container 20. Then, by using the lid 50 in the state in which the outer portion 35 are joined, it is possible to cover the opening 28 of the open container 21 again. For example, the lid 50 such that the outer portion 35 joined to the lid 50 is positioned outward from the inner portion 30 of the opening chamber 21 by covering the container 20, it is possible to re-seal the opening chamber 21 (FIG. 3 reference). At this time, since the projection 36 of the outer portion 35 of the flange portion 26 protrudes inward from the outer end 30e of the inner portion 30 can be firmly secure the outer portion 35 relative to the inner portion 30. That is, it is possible to have a high resealing of opening the container 21.
[0082]
　In this embodiment also, since the lid 50 in the state in which the outer portion 35 are joined is removed from the container 20, as compared with the case where the lid 50 is removed from the container 20 alone, the lid 50 is deformed , for example, it is possible to prevent the lid 50 will be curled or curved. Therefore, when re-seal the opening container 21 with the lid 50, it is possible to maintain the flatness of the cover 50 more stably.
[0083]
　Note that it is possible to make various modifications to the embodiments described above. Hereinafter, with reference to the drawings as needed, a modified example will be described. The following drawings used in the description and the following description, the parts that may be configured similarly to the embodiment described above will be referred to with the same reference numerals as those used for corresponding parts in the embodiment described above, and overlapping description will be omitted. Also, when the effects obtained in the embodiment described above it is clear that also obtained in the modification, it may be omitted from the description.
[0084]
　(Modification of the outer portion)
　will now be described a modification of the present invention. As shown in FIG. 12, the outer portion 35 may have a wall portion 38 located outside the lid 50 with the upper surface 35a of the outer portion 35 located above. By surrounding the lid 50 of the container with lid 10 from the outside such wall 38 is provided, the lid 50 of the container with lid 10 by intentionally or negligently will be stripped from the outer portion 35 of the flange 26 of the container 20 it is possible to suppress that. Further, it is possible to increase the rigidity of the outer portion 35 by providing the wall portion 38. Thereby, it is possible to further suppress the lid 50 after it has been removed from the container 20 will be curled or curved. Also, when to break the connecting portion 40 in order to open the container with lid 10, it is possible to easily try pinches the portion where the wall portion 38 of the outer portion 35 is provided with a finger or the like. Therefore, it is possible to improve the openability of the container with lid 10.
[0085]
　(Modification of the outer portion)
　as shown in FIG. 13 may be provided with reinforcing portions 37 extending toward the outer portion 35 downward. It is possible to increase the rigidity of the outer portion 35 by providing the reinforcing portion 37. Thereby, it is possible to further suppress the lid 50 after it has been removed from the container 20 will be curled or curved. In this variation, the reinforcing portion 37 is shown an example extending along the inner end 35e of the outer portion 35. In this case, by the end of the inner portion 30 side of the reinforcement portion 37 when putting the lid 50 to open the container 21 abuts the outer end 30e of the inner portion 30, the inclined surface 35c is, the lid 50 downward it can serve as a guide for guiding. Therefore, it is possible to easily re-sealing work. In order to effectively express the function as a guide to the reinforcing portion 37, it is preferable that the length L of the reinforcing portion 37 and the above 2 mm. The inside of the end portion 37e of the reinforcing portion 37 may be provided an inclined surface 35c which is inclined downwardly toward the outside. Thus, it is possible to further easily and resealed work.
[0086]
　(Connecting the first modification of the portion)
　Furthermore, in the above embodiment, an example provided in intermittently six connecting portions 40 along the inner portion 30, FIG. 14A is not limited thereto the connecting portion 40 as shown provided intermittently at four positions along the inner portion 30 may be provided with projections 36 of the outer portion 35 to the four corners of the corner portions of the outer part 35. Furthermore, as shown in FIG. 14A, between the inner portion 30 and outer portion 35, one side edge of the flange portion 26 as viewed in plan view, in the present modification as viewed portion 26x opposite to projection 36 pinched in a region between the projection 36, additional connecting portion 40A continuous are provided.
[0087]
　Additional connecting portion 40A to the coupling is provided on one side edge of the flange portion 26, when removing the lid 50 with the knob portion 26x from the container 20, it is not disconnected, to open and close the lid 50 when resealing when, as shown in FIG. 14B, functioning as a hinge. In this case, the length L2 of the connecting portion 40A can be at least 5 mm.
[0088]
　(Second variant of the connecting portion)
　In this modification, as in the case of the first modification of the connecting portion described above, a portion of the connecting portion will be described an example functioning as a hinge. Figure 16 is a plan view showing a container 20 in this modification. Figure 17 is a plan view showing a container 20 shown in FIG. 16, a lid 50 joined to the flange portion 26 of the container 20, the container with lid 10 with a. Note that FIG. 17, in order to avoid complexity, the inner portion 30 of the flange portion 26, and is drawing omitted except outer portion 35 and the connecting portion 40. Figure 18 is an enlarged sectional view of a portion including a hinge portion 42 to be described later of the connecting portion 40 of the container with lid 10.
[0089]
　As shown in FIG. 16, the outer edge of the inner portion 30 of the flange portion 26, a rectangular shape including four sides (the first side 26a, second side 26b, third side 26c and the fourth side 26 d) having a contour. And a first side 26a and a third side 26c is facing, the second side 26b and the fourth side 26d are opposed. In the example shown in FIG. 16, a first side 26a and the third side 26c is parallel to the long sides from each other. The second side 26b and the fourth side 26d is shorter than the first side 26a and the third side 26c, a and short sides parallel to each other.
[0090]
　16, reference numeral 26e, 26f, 26 g, 26h are portions where two sides are connected (hereinafter, referred to as corners) represents. The first corner portion 26e is positioned between the first side 26a and second side 26b, a second corner portion 26f is positioned between the second side 26b and the third side 26c and, a third corner 26g is located between the third side 26c and the fourth side 26d, the fourth corner portion 26h is provided between the fourth side 26d of the first side 26a located in.
[0091]
　As shown in FIG. 16, connecting portion 40 includes a coupling portion 41 and a pair of hinge portions 42. Coupling portion 41 is a portion that needs to be broken in order to open the container with lid 10. Coupling portion 41 in this modified example corresponds to the connecting portion 40 in the example shown in FIGS. 1 to 15. The thickness of the coupling portion 41 is the same as the thickness T3 of the connecting portion 40 in the example shown in FIGS. 1 to 15, a detailed description thereof will be omitted. Hinge 42 is a portion that after opening the container with lid 10 also continues to connect the inner portion 30 and outer portion 35. A pair of hinge portions 42, as will be described later, the outer portion 35 that is separated from the inner portion 30 of the flange 26 of the container 20 with lid 50, defines an axis of rotation A of rotating relative to the inner portion 30. Outer portion 35 is also present at least in part on one of the outer position and the inner position of the rotation axis A.
[0092]
　Container with lid 10 according to this modification, when removing the lid 50 from the container 20, the portion which is not connected by a hinge portion 42 of the connecting portion 40 of the outer portion 35 from the container 20 (unsealing the container 21) with a lid 50 to be removed, it is formed. In the state of the container with lid 10, the lid 50 is at least partially joined to the upper surface 35a of the outer part 35.
[0093]
　As shown in FIG. 16, the coupling portion 41 of the connecting portion 40 is provided at a plurality of locations intermittently along the inner portion 30, for example, at four locations. Incidentally, the coupling portion 41 may be continuously provided along the inner portion 30. Outer portion 35 is continuously extended through the connecting portion 40 to the inner portion 30 over one lap. The lower surface 50b of the lid 50 as shown in FIG. 17, the upper surface 30a of the inner portion 30 are continuously joined over one lap. By configuring the flange portion 26 and the lid 50 of the thus container 20 can seal the opening 28 of the container 20 without clearance. That is, it is possible to express the initial sealing properties.
[0094]
　In this modified example, projection 36 may, for example, as shown in FIG. 16, knob portion 26x of the outer portion 35 may be provided on a portion located. Projection 36 may be provided that differ from the knob portion 26x of the outer portion 35. Further, a plurality of projections 36 may be provided on the outer portion 35.
[0095]
　Preferably, projection 36 is provided on the sides rather than the corners of the outer portion 35. Thus, it is possible to prevent the operation of removing the lid 50 of the container with lid 10 from the container 20 is inhibited by projection 36.
[0096]
　Next, the hinge portion 42 of the above-mentioned connecting portion 40 will be described in detail with reference to FIGS. 16 to 18.
[0097]
　In the example shown in FIGS. 16 and 17, a pair of hinge portions 42, respectively, located in the corners of the inner portion 30. Specifically, one of the hinge portion 42 is located at a first corner portion 26e between the first side 26a and second side 26b, the other hinge portion 42 includes a second side 26b located in the second corner portion 26f between the third side 26c. The pair of hinge portions 42, so that the rotation axis A extends parallel to the second side 26b, is provided. The rotation axis A, as shown in FIGS. 16 and 17, the center point portion located C toward the most opening 28 of one of the hinge portion 42, the most central of the opening 28 of the other hinge portion 42 is a straight line passing through the portion located at point C near.
[0098]
　As shown in FIGS. 16 and 17, a portion of the inner portion 30 of the flange portion 26 and protrudes outward from the rotational axis A. In the example shown in FIGS. 16 and 17, the portion including the second side 26b of the inner portion 30, is located outside the rotation axis A. Portion that protrudes outward from the rotational axis A of the inner part 30 the outer edge (hereinafter, also referred to as a locking portion 31), when the lid 50 and the outer portion 35 rotates about the axis of rotation A, the lid 50 on the lower surface 50b abuts to press the lower surface 50b of the lid 50 of the. As a result, the frictional force between the lower surface 50b of the outer edge and the lid 50 of the locking portion 31 of the inner portion 30 occurs. By utilizing this frictional force, the user, in a state where the lid 50 and the outer portion 35 is rotated over a predetermined angle around the rotation axis A, to secure the cap 50 and the outer portion 35 relative to the inner portion 30 be able to. Therefore, it is possible to keep the opening 28 of the opening chamber 21 is opened.
[0099]
　17, reference numeral W5 is a part that protrudes outside the rotational axis A of the inner portion 30, represents the dimension in the direction orthogonal to the rotation axis A. Dimensions W5 is, for example 3mm or more, more preferably 5mm or more. By the dimension W5 than 3 mm, cause sufficient friction between the bottom surface 50b of the outer edge and the lid 50 of the locking portion 31 of the inner portion 30, the lid 50 and the outer portion 35 relative to inner portion 30 it can be fixed Te. The dimensional W5 is, for example, 10mm or less, and more preferably 7mm or less. By the dimension W5 to 10mm or less, it is possible to frictional force generated between the lower surface 50b of the outer edge and the lid 50 of the locking portion 31 of the inner portion 30 is prevented from becoming excessively large. Thus, it is possible to prevent the lid 50 or peeled off from the outer portion 35, it has become difficult to rotate the lid 50 and the outer portion 35.
[0100]
　Preferably, as shown in FIG. 17, the first joint portion 30A is not provided in the engaging portion 31 of the inner portion 30. In other words, the upper surface of the locking portion 31 of the inner portion 30 is not bonded to the lower surface 50b of the lid 50. The following describes the reason for adopting such a junction.
[0101]
　Entire upper surface of the inner portion 30 is assumed to be bonded to the lid 50. In this case, in the state of the container with lid 10 and exerts an upward force on knob portion 26x of the above-described flange portion 26, the portion located knob portion 26x side with respect to the rotation axis A of the lid 50 , added the direction of the force away from the top surface 30a of the inner portion 30. On the other hand, in a portion from the knob portion 26x with respect to the rotation axis A of the cap 50 located opposite, force is applied toward the top surface 30a of the inner portion 30. Therefore, by adding an upward force to the knob portion 26x of above, the knob portion 26x with respect to the rotation axis A of the lid 50 peeling the portion located on the opposite side from the upper surface 30a of the inner portion 30 It can not be. In this case, for example, in the sides and corners of the flange portion 26 located on the opposite side of the knob portion 26x, an inner portion located on the opposite side of the knob portion 26x with respect to the rotation axis A of the lid 50 it is necessary to perform the work to be peeled from the upper surface 30a of portion 30.
[0102]
　In contrast, in the present embodiment, the upper surface of the locking portion 31 of the inner portion 30 is not bonded to the lower surface 50b of the lid 50. Therefore, by adding an upward force to the knob portion 26x, it is possible to peel the lid 50 from the upper surface 30a of the inner portion 30. Thus, it is possible to facilitate the task of opening the container with lid 10.
[0103]
　16, code S1 represents the dimension in the direction along the outer edge of the inner portion 30 of the hinge portion 42, reference numeral S2 is in the direction perpendicular to the direction along the outer edge of the inner portion 30 of the hinge portion 42 representing the dimensions. Dimension S1 not is, for example, 1mm or more, and more preferably 3mm or more. The dimensional S2 is is for example 1mm or more, and more preferably 2mm or more. The dimension S1 not the least 1 mm, by setting the dimension S2 1 mm or more, that the outer portion 35 to prevent the hinge portion 42 is broken such as when rotating relative to the inner part 30 about the axis of rotation A it can. The dimensional S2 are, for example, a 5mm or less, more preferably 4mm or less. By the dimension S2 is 5mm or less, it is possible to properly contact the outer edge of the locking portion 31 of the inner portion 30 to the lower surface 50b of the lid 50.
[0104]
　Figure 18 is a cross-sectional view of a portion including a hinge portion 42 of the container with lid 10. Preferably, the inner ends of the pair of ends of the hinge portion 42 (hereinafter, also referred to as inner end) 42a is connected to the position of the lower surface 30b toward one of the inner portion 30. Preferably, outer end portion of the pair of ends of the hinge portion 42 (hereinafter, also the outer end referred to) 42b is connected to the position of the upper surface 35a near one of the outer portion 35. For example, as shown in FIG. 18, the inner end 42a of the hinge portion 42 is connected to the lower surface 30b of the inner portion 30, the outer end 42b of the hinge portion 42, the position of the upper surface 35a closer of the inner edge of the outer part 35 It is connected. Note that "being connected to the lower surface side of the position", the distance from the connection point to the lower surface, which means that shorter than the distance from the connecting point to the top surface. Similarly, "it is connected to the position of the upper surface closer", the distance from the connection point to the upper surface, meaning that less than the distance from the connecting point to the lower surface.
[0105]
　The thickness T4 of the hinge portion 42 is, for example, 0.1mm or more, more preferably 0.3mm or more. The thickness T4 of the hinge portion 42 is, for example, 1mm or less, more preferably 0.8mm or less.
[0106]
　In this modification, as in the embodiment described above, it is possible to manufacture a container 20 by injection molding. Further, the lid 50, the retainer 70 can be welded to the flange 26 of the container 20 by using the first heating plate 75 and the second heating plate 76. During the welding operation, the coupling portion 41 of the connecting portion 40 will remain bent between the inner portion 30 and outer portion 35. Or during the welding operation, it is conceivable that the binding portion 41 is broken from the inner part 30 or outer portion 35. On the other hand, the hinge portion 42 of the connecting portion 40 is configured so as not to break during the welding operation.
[0107]
　Next, an example of a method of opening a container with lid 10 according to this modification.
[0108]
　First, as in the embodiment described above, a portion of the knob portion 26x of the flange portion 26 of the container 20, exerts an upward force. Thus, around the knob portion 26x, it is peeled off the lower surface 50b of the lid 50 from the upper surface 30a of the inner portion 30, also to break the coupling portion 41 of the connecting portion 40. Subsequently, as shown in FIG. 19, as the lid 50 and the outer portion 35 rotates about the axis of rotation A, it continues to apply a force to the knob portion 26x. Thus, to advance the release of the lower surface 50b of the lid 50 from the upper surface 30a of the inner portion 30. Further, to break the remaining coupling portion 41. After all of the coupling portion 41 is broken, both the part located inside the portion and the rotation axis A located outside the rotational axis A of the outer portion 35 can be rotated about an axis of rotation A.
[0109]
　As rotation of the lid 50 and the outer portion 35 progresses, the outer edge of the engaging portion 31 of the inner portion 30 is increased pressing force to press the lid 50, between the lower surface 50b of the outer edge and the lid 50 of the locking portion 31 frictional force generated is also increased. If the frictional force is, the lid 50 and the outer portion 35 is greater than the force to be displaced in opposite to the direction Fa as shown in FIG. 19 by its own weight, the user does not apply force to the lid 50 and the outer portion 35 even, so the lid 50 and the outer portion 35 rests against the inner portion 30. Therefore, it is possible to keep the opening 28 of the opening chamber 21 is opened.
[0110]
　In this modification, the material and thickness of the lid 50 is preferably a lid 50 to allow the elastic deformation, is selected when the underside 50b of the cover 50 is pressed from the outer edge of the locking portion 31 of the inner portion 30 that.
[0111]
　Hereinafter, summarized the effects of this modification. Container 20 of the present modification includes a pair of hinge portions 42 which connects the inner portion 30 and outer portion 35. Therefore, after removing the lid 50 from the container 20, an outer portion 35 which is joined to the lid 50 and the lid 50, the inner portion 30 of the opening chamber 21, can be rotated about an axis of rotation A . Therefore, the user, without performing positioning of the lid 50 for opening the container 21, it is possible to cover the opening 28 of the open container 21 with ease lid 50. The inner portion 30 of the container 20 includes a locking portion 31 which protrudes outward from the rotational axis A. The outer edge of the locking portion 31 can lid 50 and outer portions 35 when rotating around the rotation axis A, presses the lower surface 50b of the cover 50 abuts against the lower surface 50b of the lid 50. Therefore, the frictional force between the lower surface 50b of the outer edge and the lid 50 of the locking portion 31 of the inner portion 30 occurs. By utilizing this frictional force, the user, in a state where the lid 50 and the outer portion 35 is rotated over a predetermined angle around the rotation axis A, to secure the cap 50 and the outer portion 35 relative to the inner portion 30 be able to. Therefore, it is possible to keep the opening 28 of the opening chamber 21 is opened.
[0112]
　Further, the outer portion 35 of the container 20 according to the present modification, projection 36 which projects inside portion 30 side. Therefore, in the state of opening the container 21 after the coupling portion 41 of the connecting portion 40 is broken, it is possible to firmly fix the outer portion 35 relative to the inner portion 30. This makes it possible to have a high resealing of opening the container 21.
[0113]
　Hereinafter, the container with lid 10 and the container 20 of the present modification, whether further modification worship be described.
[0114]
　The container 20 with the lid 50 are not joined, in the vertical direction, is not the positional relationship of the inner portion 30 and outer portion 35 is particularly limited. For example, as shown in FIG. 20, the container 20 with the lid 50 are not joined, also the upper surface 30a of the upper surface 35a and the inner portion 30 of the outer portion 35 of the flange portion 26 is located on the same plane good.
[0115]
　16 and 17, outer portion 35, an example is shown which includes a projection 36 which projects into the inner portion 30 side, is not limited thereto. For example, as shown in FIG. 21, the outer portion 35 may not include a protrusion that protrudes into the interior portion 30 side.
[0116]
　16 and 17, a pair of hinges 42, one side of the inner portion 30, specifically such that the second side 26b is positioned outside the rotation axis A, the inner portion 30 an example for connecting the outer portion 35. In this modification, a pair of hinges 42, such that one corner of the inner portion 30 is at least partially positioned outside the rotation axis A, coupling the inner portion 30 and outer portion 35 cases It will be described.
[0117]
　Figure 22 is a plan view showing a container 20 according to this modification. In the example shown in FIG. 22, the outer edge of the inner portion 30 is equal four sides of length (first side 26a, second side 26b, third side 26c and the fourth side 26 d) square containing having a contour.
[0118]
　As shown in FIG. 22, a pair of hinge portions 42, as a part of the second corner portion 26f of the inner portion 30 located outside the rotation axis A, connected to an inner portion 30 and outer portion 35 are doing. Specifically, any pair of hinge portions 42 are positioned in the second corner portion 26f. Between the one hinge portion 42 and the other hinge part 42, a predetermined gap is provided. In this case, among the inner part 30, the locking portion 31 a portion that protrudes outward from the rotational axis A passing through the pair of hinge portions 42 presses the lower surface 50b of the cover 50 abuts against the lower surface 50b of the lid 50 to function as.
[0119]
　Figure 23 is a plan view showing a container with lid 10 obtained by joining the lid 50 to the container 20 shown in FIG. 22. In this modification, by adding an upward force to a portion of the outer portion 35 on the side of the fourth corner 26h opposed to the second corner portion 26f in which a pair of hinge portions 42 are provided, a lid to separate the 50 from the upper surface 30a of the inner portion 30. Preferably, the portion corresponding to the fourth corner portion 26h of the outer portion 35 is provided with a knob portion 26x protruding outward.
[0120]
　As with the example shown in FIGS. 16 and 17, also in this modification, preferably, as shown in FIG. 23, the locking portion 31 of the inner portion 30 is not bonded to the lid 50. Therefore, by adding an upward force to the knob portion 26x, it is possible to peel the lid 50 from the upper surface 30a of the inner portion 30. Thus, it is possible to facilitate the task of opening the container with lid 10.
[0121]
　A pair of hinge portions 42 is one of the corners, for example, when located in the second corner portion 26f, as shown in FIGS. 22 and 23, the inner edge of the flange portion 26 of the second corner portion 26f, of the other it may be disposed to the center point C side than the corner portion. Thus, it is possible to enlarge the area of ​​the inner portion 30 located inside the rotating shaft A. Therefore, even if the rotary shaft inner portion 30 in the outer than A even when not joined to the lid 50, than the rotational axis A of the area for joining the inner portion 30 in the lid 50 in the second corner portion 26f it is possible to appropriately secure inside.
[0122]
　In this modified example, upon opening the container with lid 10, the peeling of the lid 50, as shown in FIG. 23 by arrows P1, it travels in the direction toward the center point C from the fourth corner 26h. Force required to advance the release of the lid 50 over the unit length in the direction P1, the length of the intersection with straight lines extending along the direction P2 perpendicular to the direction P1 of the first joining portion 30A (hereinafter, proportional to be referred) and the peeling length.
　According to this modification, by providing the locking portion 31 at a corner of the inner portion 30, it is provided with a knob portion 26x in the corner portion of the flange portion 26. Therefore, as compared with a case where the knob portion 26x to the side of the flange portion 26, it is possible to reduce the peel length at the start of the work of opening a container with lid 10, therefore, at the start of the work of opening it is possible to reduce the necessary force. Thus, it is possible to improve the openability of the container with lid 10.
[0123]
　(Deformation of the shape of the container Example)
　In the example shown in FIGS. 16 and 17, the flange 26 of the container 20 is an example having a rectangular profile. In this modification, the flange 26 of the container 20 will be described an example having a circular contour.
[0124]
　Figure 24 is a plan view showing a container 20 according to this modification. In the example shown in FIG. 24, the inner edge of the inner portion 30 defining an opening 28, and, any outer edge of the inner portion 30 has a contour of a circular shape or an elliptical shape. Further, the outer edge of the inner portion 30 has its center C1 is configured to eccentrically to a pair of hinge portions 42 side with respect to the center C of the opening 28. In this modification, of the inner portion 30, engages a portion that protrudes outward from the rotational axis A passing through the pair of hinge portions 42 presses the lower surface 50b of the cover 50 abuts against the lower surface 50b of the lid 50 to function as a stop portion 31.
[0125]
　Figure 25 is a plan view showing a container with lid 10 obtained by joining the lid 50 to the container 20 shown in FIG. 24. As in the embodiment described above, also in this modification, preferably, as shown in FIG. 25, the locking portion 31 of the inner portion 30 is not bonded to the lid 50. Therefore, by adding an upward force to the knob portion 26x, it is possible to peel the lid 50 from the upper surface 30a of the inner portion 30. Thus, it is possible to facilitate the task of opening the container with lid 10.
[0126]
Although described several modifications of the embodiment described above, of course, it is also possible to apply a combination of a plurality of modification as appropriate.

The scope of the claims
[Requested item 1]
　A container having an opening formed,
　a bottom surface,
　and the erected sides from the bottom,
　has a flange portion provided continuously to the upper portion of the side surface, and
　said flange portion is continuous over one lap wherein the continuously provided by the inner portion on the side surface, an outer portion located outside of the inner portion, provided between the inner portion and the outer portion, connecting to connecting the inner portion and the outer portion It includes a moiety, a
　top surface of the outer portion is positioned below the lower surface of the inner portion,
　the outer portion, provided with a projection which projects into the inner portion side, the container.
[Requested item 2]
　The protrusion protrudes into said only 0.1 mm ~ 1.0 mm from the outer portion end inner portion side of the inner portion, the container according to claim 1.
[Requested item 3]
　The container has a thermoplastic resin container according to claim 1 or 2.
[Requested item 4]
　Said connecting portion has a thickness of less than the thickness of the thickness and the outer portion of the inner portion, the container according to any one of claims 1 to 3.
[Requested item 5]
　The linking moiety, over a circumference are formed intermittently along the inner portion, the container according to any one of claims 1 to 4.
[Requested item 6]
　The portion of the connecting portion, the functions along the inner portion is continuously formed as a hinge portion, the container according to any one of claims 1 to 5.
[Requested item 7]
　The connecting portion includes the pair of the outer portion and connects the inner portion and the outer portion to define a rotation axis for rotating relative to the inner part hinge portion,
　a portion of the inner portion protrudes outward from the rotation axis a container according to any one of claims 1 to 3.
[Requested item 8]
　Wherein the portion that protrudes outward from the rotation axis of the inner portion, the dimension in the direction perpendicular to the rotating shaft is 3mm or more, containers according to claim 7.
[Requested item 9]
　Wherein the portion that protrudes outward from the rotation axis of the inner portion, the dimension in the direction perpendicular to the rotation axis is 10mm or less A container according to claim 7 or 8.
[Requested item 10]
　The rotating shaft is a straight line passing through the portion located most central point closer of the opening of one of the hinge portion, and a portion located in the most central point side of the said opening of the other of said hinge portion there, the container according to any one of claims 7 to 9.
[Requested item 11]
　The inner portion has a polygonal shape including a plurality of sides and a plurality of corners,
　the pair of hinge portions of the connecting portion, one of said sides of said inner portion is located outside the said rotary shaft It said inner portion and connecting the said outer portion container according to any one of claims 7 to 10 as.
[Requested item 12]
　The inner portion has a polygonal shape including a plurality of sides and a plurality of corners,
　the pair of hinge portions of the connecting portion is at least partially than one of said corners the rotation axis of the inner part a container according to any one of the inner portion and connecting the said outer portion, claims 7 to 10 so as to be positioned outside.
[Requested item 13]
　A container in which an opening is formed,
　and a lid joined to said container so as to cover the opening of the container,
　said container includes a bottom surface, and the erected sides from the bottom of the side has a flange portion provided continuously to the upper, and
　the flange portion includes an inner portion which is continuously provided continuously to the side over one lap, and an outer portion located outside of the inner portion,
　said lid, the upper surface of the inner portion are continuously joined over one round, and the upper surface of the outer portion is at least partially joined,
　the upper surface of the inner portion, the upper surface of the outer portion located on the at least partially flush, the lower surface of the outer portion positioned below the lower surface of the inner portion,
　the outer portion, protrusion that protrudes inward from the outer end of the inner portion the provided, container with a lid.
[Requested item 14]
　The flange portion further includes a connecting portion for connecting the inner portion and the outer portion,
　said connecting portion, said inner portion to define a rotary shaft for rotating said outer portion to said inner portion the includes a pair of hinge portion and an outer portion are connected,
　a part of the inner portion is protruded outward from the rotating shaft, the container with lid according to claim 13.
[Requested item 15]
　Portion that protrudes outward from the rotation axis of the upper surface of the inner portion is not bonded to the lid, the container with lid according to claim 14.
[Requested item 16]
　Bonding force between the upper surface of the lid and the outer portion, the larger than the bonding strength between the lid and the inner portion, with a lid according to any one of claims 13 to 15 container.
[Requested item 17]
　Preparing a container according to claim 1,
　comprising the steps of placing a lid on the top surface of the inner portion of the container,
　while holding the lower surface of the outer portion of the container, through the lid the upper surface of the inner portion by the heat plate presses downwardly Te, thereby, said the upper surface of the outer portion and the upper surface of the inner portion is positioned on the same plane, and the upper surface and the said inner portion of said lid comprising a step of welding to the upper surface of the outer portion, the method for producing a container with a lid.