Art
[1]
This specification claims the benefit of Korea Patent Application No. 10-2017-0018892 filed favor submitted to the Korea Intellectual Property Office on February 10, 2017, and the contents of which are included in the present invention.
[2]
The present invention relates to an inorganic material transfer tape.
BACKGROUND
[3]
Electronic apparatus has various members are attached by adhesive. For example, a variety of optical members such as liquid crystal display (Liquid Crystal Display, LCD), the polarizing plate, a retardation plate, an optical compensating film, a reflecting sheet, a protective film and a brightness enhancement film may be attached by pressure sensitive adhesive. Recently, in accordance with the load of the electronic apparatus thin in thickness, there is an attempt to implement a superior durability while lowering the thickness of the adhesive layer for attachment of the member in the electronic apparatus is to continue.
[4]
If you do not use the substrate to reduce the thickness of the adhesive layer, it is difficult to control the dimension control and avoid lifting phenomenon of the complex and the adhesive layer through a punching process and has a difficulty in a continuous process.
[5]
[Prior art document]
[6]
Korea Laid-Open: KR 10-2011-0006789 A
Detailed Description of the Invention
SUMMARY
[7]
Herein it is to provide an inorganic material transfer tape suitable for a continuous process.
Problem solving means
[8]
An exemplary embodiment of the present invention, the release liner comprising a surface and a trifling jungbak surface; And comprising a transfer film layer provided on the surface of the jungbak, wherein jungbak surface with a release peel force was the transfer film layer of the transfer film layer 3 m / 10 g during the peeling in min speed / in more than 70 g / in It provides more than one inorganic material transfer tape.
Effects of the Invention
[9]
Inorganic material transfer tape according to the present invention has an advantage capable of working with a continuous process without a separate punching step.
[10]
Inorganic material transfer tape according to the invention has the advantage that can be attached to a member of an electronic device with a minimum thickness.
[11]
Inorganic material transfer tape according to the invention is lower, the initial release of a transfer-resistant film layer, there is an advantage that can be attached with no lifting phenomenon at the time of a continuous process adherend.
[12]
Inorganic material transfer tape according to the invention can advantageously to induce the breaking of the transfer film layer through the seal, the continuous process carried out without a separate punching step.
Brief Description of the Drawings
[13]
Figure 1 shows an inorganic material teyipeueul transfer according to an exemplary embodiment of the present invention.
[14]
Figure 2 is a graph of comparative example 1 and measured the initial release of a transfer-resistant film layer of the inorganic material in the transfer tape according to the first embodiment.
[15]
Figure 3 shows the initial release how to measure the resistance of the transfer film layer.
Best Mode for Carrying Out the Invention
[16]
When that member which is positioned "on" the other element herein, it also includes a case member which is in contact with the other members, as well as if the other member exists between the two members.
[17]
Assuming that any part "includes" a certain component in the present specification, which is not to exclude other components not specifically described against which means that it is possible to further include other components.
[18]
It will now be described in further detail herein.
[19]
An exemplary embodiment of the present invention, the release liner comprising a surface and a trifling jungbak surface; And comprising a transfer film layer provided on the surface of the jungbak, wherein jungbak surface with a release peel force was the transfer film layer of the transfer film layer 3 m / 10 g during the peeling in min speed / in more than 70 g / in It provides more than one inorganic material transfer tape.
[20]
The transfer film when the transfer layer is, the release liner is removed to an adherend, it can be a double-sided pressure-sensitive adhesive layer inorganic material. The transfer film layer is not a separate base material, there is an advantage that by at least the thickness of the member can be attached to the electronic apparatus.
[21]
Figure 1 shows an inorganic material teyipeueul transfer according to an exemplary embodiment of the present invention. Specifically, Figure 1 shows that the transfer film having the layer 200 on the release liner 100 including a trifling surface 101 and jungbak surface 102. When the inorganic material transfer tape in accordance with one embodiment of the present invention provided in the form of take-up, the top surface layer of the transfer film 200 can be wound tangent to frivolous surface 101 of the release liner (100). However, not limited to the inorganic material is a transfer tape 1 according to the invention, an additional member such as a base film which is provided between the surface and frivolous jungbak surface may be further provided.
[22]
In this specification, jungbak surface can unwound when the transfer tape, means the surface of the release liner in contact with the transfer film layer. In addition, the frivolous side can mean the opposite surface of the surface of the release liner in contact with the transfer film layer when the transfer tape unwound.
[23]
According to an exemplary embodiment of the present invention, the jungbak surface and the transfer release peel force of the film layer to the transfer film layer 3 m / min at a rate to peel 65 g / in or less, 50 g / in or less, or 48 g / in or less. Further, according to one embodiment of the present invention, the jungbak surface and the release peel force of the transfer film layer is the transfer film layer 3 m / min at a rate to peel 20 g / in or more, 30 g / in or more, or 40 g / in it can be more than.
[24]
The inorganic material transfer tape is the jungbak surface and the transfer by controlling the release peel force of the film layer in the above-described range, the transfer film layer upon removal of the release liner after attaching the transfer film layer to the adherend and the adherend and there is the advantage of being able to minimize the lifting phenomenon. Specifically, to the inorganic material transfer tape is very low control as the release peel force of the jungbak surface of the transfer film layer and said release liner and said range, after attaching the transfer film layer to the adherend of the release liner upon removal it is possible to minimize the lifting phenomenon of the transfer film layer.
[25]
According to an exemplary embodiment of the present invention, the initial release resistance of the transfer film layer may be up to 200 g / in more than 600 g / in. More specifically, according to one embodiment of the present invention, the initial release resistance of the transfer film layer may be up to 200 g / in more than 550 g / in or less, 250 g / in more than 550 g / in. More specifically, according to one embodiment of the present invention, the initial release resistance of the transfer film layer may be up to 280 g / in more than 520 g / in or less, or 290 g / in more than 500 g / in.
[26]
The initial release resistance may indicate the power of the time, when the transfer film layer is stretched is started after attaching the transfer film layer of an inorganic material transfer tape to the adherend although an tensile force in order to break the transfer film layer. That is, the transfer film layer is capable of rupture to be longer than the initial release resistance forces.
[27]
If the initial mold release resistance of the transfer film layer is adjusted within this range, it may be via a continuous process for attaching the transfer film layer on the adherend. Specifically, if the initial release resistance of the transfer film layer is adjusted within the above range, the transfer film layer adhered to the adherend when applying a tensile force after attaching the transfer film layer to the adherend to rupture the transfer film layer It has the advantage of minimizing the deultteuneun phenomenon. Further, by using this same advantage, the inorganic material transfer tape may be applied in a continuous process, it is possible to attach the transfer film layer successively on a plurality of the adherend.
[28]
Figure 3 shows the initial release how to measure the resistance of the transfer film layer. Further, FIG. 3 may be an indication of the course of the continuous process of the inorganic material transfer tape of the present invention. Specifically, Figure 3 is then attached to (a) an inorganic material transfer tape to the transfer film layer 200 is in contact with the adherend 300, and applies a force peeling off the release liner 100 and the transfer film layer 200 to measure (b) the power of when the measurement shows that the initial release resistance. Further, the inorganic material transfer when continued power to the tension in the tape for applying the adherend 300, the transfer film layer 200 that is not attached to is stretched (c), after the transfer film layer is cut (d), the inorganic material transfer tape may perform a continuous process, for the following adherend.
[29]
According to an exemplary embodiment of the present invention, the release tape is peeled off with respect to the reference of the tesa 7475 jungbak side force may be up to 3 m / min rate to 20 g / in more than 50 g / in when stripping the reference tape. More specifically, according to one embodiment of the present invention, the release peel force with respect to the reference tape, the tesa 7475 of the jungbak surface is the reference tape to 3 m / hour peel min, rate 20 g / in more than 40 g / in or less, or 25 g / in can be up to more than 35 g / in.
[30]
The release peel force with respect to the reference tape, the tesa 7475 jungbak the surface of the specification were measured as follows. Specifically, width 25.4 ㎜ persons × length 150 ㎜ tape (Tesa 7475) for 2 kg using a roller of a load and attached to the jungbak surface of the round trip and release liner twice at a rate of 10 ㎜ / sec, jungbak of the release liner after aging for 24 hours for sufficient adhesion of the surface to a reference tape, AR-1000 (manufacturer: Cheminstrument) by using a device to measure the 180 degree peeling strength at a speed of 3.0 m / min.
[31]
According to an exemplary embodiment of the present invention, jungbak surface and frivolous surface of the release liner can be a release layer formed using the respective silicone-based release agent. However, it not limited to this, may be formed using a release agent commonly used in the art.
[32]
According to an exemplary embodiment of the present invention, the transfer film layer and the release peel force of the jungbak surface it may be greater than the release peel force of the film transfer layer and the surface trifling. Through this, the take-up condition is an inorganic material transfer tape is easily unwound, can be applied in a continuous process.
[33]
According to an exemplary embodiment of the present invention, the base film of the release liner may be a paper, fiber sheet (woven or nonwoven) or a polymer film. More specifically, according to one embodiment of the present invention, the base film of the release liner may be a paper. When the base film to the paper, it is possible to reduce costs as compared with the case of using a polymer film.
[34]
According to an exemplary embodiment of the present invention, the inorganic material may be a transfer tape-wound type. Specifically, the inorganic material transfer tape can perform a continuous process through a may be provided in the wound roll form, comprising the unwinder this continuous apparatus.
[35]
According to an exemplary embodiment of the present invention, the frivolous surface and the release peel force of the transfer film layer may be up to the transfer film layer 3 m / min rate to 10 g / in more than 25 g / in when stripping.
[36]
As used herein, the frivolous surface and the release peel force of the transfer film layer, may be measured by the same process and method of measuring the release peel force of jungbak surface of the aforementioned transfer film layer and the release liner.
[37]
When the inorganic material of the transfer tape wound around the form, the opposite side surface of the transfer film in contact with the floor surface jungbak surface is flush with the surface of the release liner trifling. If the frivolous surface and the release peel force of the transfer film layer is within the range, as the take-up the form of the inorganic material transfer tape applied to a continuous process through the unwinder, etc. may be no damage to the film transfer layer. Said frivolous surface and the release Peel force is 25 g / when the in the excess release detachment of the jungbak side force balanced station delamination remains not face frivolous without pressure-sensitive adhesive does not fall smoothly from the trifling surface side fit of the transfer film layer occurs and it indicates damage to the pressure-sensitive adhesive may result in contamination to the machine when applied to a continuous process.
[38]
According to an exemplary embodiment of the present invention, the transfer film layer is a (meth) acrylate monomers; A cycloalkyl group-containing acrylate monomer; Heterocycloalkyl group-containing acrylate monomer; And polar functional group-containing monomers; it may be a cured product of a resin composition comprising a.
[39]
According to an exemplary embodiment of the present invention, the transfer film layer may be a single layer. Specifically, the transfer film layer does not include a separate base film, it can be a layer of multilayer pressure-sensitive adhesive film.
[40]
In the present specification, the (meth) acrylate refers to acrylate or methacrylate.
[41]
According to an exemplary embodiment of the present invention, the cycloalkyl group may include a carbon ring structure that does not have an unsaturated bond existing in the functional group containing a single ring (monocyclic ring) or multiple rings (polycyclic ring) having from 3 to 20 carbon atoms can do.
[42]
According to an exemplary embodiment of the present invention, the heterocycloalkyl group may comprise a ring structure of the unsaturated bond is not present contain hetero atoms other than carbon in the functional group, having 2 single ring (monocyclic ring), or multiple to 20 It may comprise rings (polycyclic ring).
[43]
According to an exemplary embodiment of the present invention, the (meth) acrylate monomer may be a (meth) acrylate having an alkyl group having 1 to 20 carbon atoms. Specifically, the (meth) acrylate monomers are methyl (meth) acrylate, ethyl (meth) acrylate, n- propyl (meth) acrylate, isopropyl (meth) acrylate, n- butyl (meth) acrylate , t- butyl (meth) acrylate, sec- butyl (meth) acrylate, pentyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, 2-ethylbutyl (meth) acrylate, n- octyl ( meth) acrylate, and isooctyl (meth) one or more selected from the group consisting of acrylate.
[44]
According to an exemplary embodiment of the present invention, the cycloalkyl group-containing acrylate monomer is cyclohexyl acrylate (CHA), cyclohexyl methacrylate (CHMA), isobornyl acrylate (IBOA), isobornyl methacrylate (IBOMA) and 3,3,5-trimethyl-bicyclo can include hexyl acrylate least one element selected from the group consisting of (TMCHA, 3,3,5-trimethylcyclohexylacrylate).
[45]
According to an exemplary embodiment of the present invention, the content of the cycloalkyl group-containing acrylate monomer is a (meth) acrylate monomers can be not more than 10 parts by weight per 100 parts by weight 40 parts by weight. More specifically, according to one embodiment of the present invention, the content of the cycloalkyl group-containing acrylate monomer may be up to 30 parts by weight or more and 10 parts by weight based on the (meth) 100 parts by weight acrylate monomer. Further, the content of the cycloalkyl group-containing acrylate monomer may be up to 30 parts by weight or more and 25 parts by weight per 100 parts by weight of the (meth) acrylate monomers.
[46]
When the content is within the range of the cycloalkyl group-containing acrylate monomer, it is possible to secure the adhesive force of the film transfer layer with respect to an adherend having low surface energy.
[47]
According to an exemplary embodiment of the present invention, the heterocycloalkyl group containing acrylate monomer is tetra-hydroperoxide furyl acrylate (THFA), tetrahydropyranyl acrylate (THPA), acryloyl morpholine, and cyclic trimethylolpropane foam can acrylate containing at least one element selected from the group consisting of (CTFA, cyclictrimethylol-propaneformalacrylate).
[48]
According to an exemplary embodiment of the present invention, the amount of the heterocycloalkyl group-containing acrylate monomer is 1 part by weight or more 15 parts by weight or less based on 100 parts by weight of the (meth) acrylate monomers. More specifically, according to one embodiment of the present invention, the amount of the heterocycloalkyl group-containing acrylate monomer may be up to more than 15 parts by weight 5 parts by weight based on the (meth) 100 parts by weight acrylate monomer. Further, the content of the heterocycloalkyl group-containing acrylate monomer is a (meth) acrylate monomer based on 100 parts by weight 5 parts by weight or more and 10 parts by weight or less, or 10 parts by weight or more can be not more than 15 parts by weight.
[49]
When the content is within the range of the heterocycloalkyl group containing acrylate monomer, it is possible to keep down the good adhesion to the glass transition temperature (Tg) of the transfer film layer, it is possible to improve the wettability of the transfer film layer.
[50]
According to an exemplary embodiment of the present invention, the polar functional group-containing monomer may include a hydroxyl group-containing monomers, carboxyl group-containing monomer and a nitrogen-containing monomer is at least one selected from the group consisting of.
[51]
According to an exemplary embodiment of the present invention, the hydroxy group-containing monomers include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 6-hydroxy one member selected from hydroxy hexyl (meth) acrylate, the group consisting of 8-hydroxy-octyl (meth) acrylate, 2-hydroxy-ethylene glycol (meth) acrylate and 2-hydroxy-propylene glycol (meth) acrylate more than can.
[52]
According to an exemplary embodiment of the present invention, as the carboxyl group-containing monomers include acrylic acid, methacrylic acid, 2- (meth) acryloyl-yloxy acetic acid, 3- (meth) acrylic acid as a profile-yloxy, 4- (meth) acrylate one member selected from yloxy-butyric acid, acrylic acid dimer, itaconic acid, and the group consisting of maleic acid may be at least.
[53]
According to an exemplary embodiment of the present invention, the nitrogen-containing monomer is 2-isocyanatoethyl (meth) acrylate, 3-isocyanatoethyl (meth) acrylate, 4-isocyanato-butyl (meth) acrylate, (meth) may be at least one selected from the group consisting of acrylamide, N- vinyl pyrrolidone and N- vinyl caprolactam.
[54]
According to an exemplary embodiment of the present invention, the content of the polar functional group-containing monomer may be up to 10 parts by weight 1 part by weight or more based on 100 parts by weight of the (meth) acrylate monomers. More specifically, according to one embodiment of the present invention, the content of the polar functional group-containing monomer may be up to 10 parts by weight or more and 5 parts by weight per 100 parts by weight of the (meth) acrylate monomers.
[55]
If the content is within the range of the polar functional group-containing monomer, it is possible to control the cohesive force of the film transfer layer with a height that does not over-range, the transfer film layer is easily broken is applicable to a continuous process. Further, when the content of the polar functional group-containing monomer is within the above range, there is a merit capable of ensuring the heat resistance. Specifically, in the case containing the polar functional group-containing monomer is less than the above range, there may occur a problem that the high temperature durability is deteriorated.
[56]
According to an exemplary embodiment of the present invention, the resin composition may further include an acrylate-based crosslinking agents, isocyanate crosslinking agents, epoxy-based crosslinking agent, an aziridine crosslinking agent, and at least one crosslinking agent selected from the group consisting of a metal chelate crosslinking agent. Specifically, the resin composition may further include an aziridine crosslinking agent.
[57]
The crosslinking agent may be produced by a cross-linked network in the interior of the transfer film layer ensuring the cohesion of the film transfer layer and give heat resistance.
[58]
According to an exemplary embodiment of the present invention, the acrylate-based crosslinking agent is butanediol diacrylate, pentanediol diacrylate, hexanediol diacrylate, ethylene glycol diacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate acrylate, tetraethylene glycol diacrylate, propylene glycol diacrylate, dipropylene glycol diacrylate, and the tree may be at least one selected from the group consisting of propylene diacrylate.
[59]
According to an exemplary embodiment of the present invention, the isocyanate-based crosslinking agent are tolylene diisocyanate, xylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, isopropyl boron diisocyanate, tetramethyl xylene diisocyanate and naphthalene diisocyanate, of at least one member selected from the group consisting of cross-linking agent prepared by reacting a diisocyanate with a polyol may be at least one kind.
[60]
According to an exemplary embodiment of the present invention, the epoxy-based cross-linking agent is ethylene glycol diglycidyl ether, triglycidyl ether, trimethylol propane triglycidyl ether, N, N, N ', N'- tetraglycidyl ethylene one member selected from the group consisting of diamines and glycerin diglycidyl ether may be at least.
[61]
According to an exemplary embodiment of the present invention, the crosslinking agent is an aziridine, N, N'- toluene-2,4-bis (1-aziridine-carboxamide), N, N'- diphenyl methane -4,4 ' - bis (1-aziridine carboxamide), triethylene melamine, bis-isopropenyl phthaloyl yl-1- (2-methyl aziridine), tri-1-aziridinyl phosphine oxide and N, N'- methylene-bis already mentioned at least one selected from the group consisting of noise isophthalamide, but is not limited to this.
[62]
According to an exemplary embodiment of the present invention, the metal chelate cross-linking agent is aluminum, iron, zinc, tin, titanium, antimony, magnesium or vanadium, and acetyl acetone or acetonitrile, which is one kinds or two kinds or more of the polyvalent metal coordination ethyl acetate, etc., such as It may include, but is not limited to this.
[63]
According to an exemplary embodiment of the present invention, the resin composition with respect to the cross-linking agent for the (meth) acrylate monomer of 100 parts by weight, 0.01 parts by weight or more and 5 parts by weight or less, specifically, 0.03 part by weight or more than 5 parts by weight, more specifically, it is possible to include more than 0.1 parts by weight or more and 5 parts by weight.
[64]
When the amount of the crosslinking agent is within the above range, the crosslinking density in the film transfer layer is appropriately adjusted, it is possible to implement the cohesive force and heat resistance at a reasonable level, it is also possible to improve the adhesion of the transfer film layer. Specifically, if the amount of the crosslinking agent is less than 0.01 weight part, the crosslinking density of the transfer film layer may cause too low problem cohesive force and heat resistance are lowered, if it exceeds 5 parts by weight of high and the cross-linking density of the transfer film layer is too the adhesion and wettability to an adherend is lowered may cause a problem that adhesive strength is lowered.
[65]
According to an exemplary embodiment of the present invention, the resin composition may be a solution polymerization the monomers in the resin composition. Specifically, the resin composition may be polymerizable monomers through a thermal polymerization.
[66]
Further, after addition of the crosslinking agent to the solution polymerized resin composition, it is possible to form a transfer film layer polymerized to a conversion rate of 99% or more by the heat curing.
[67]
According to an exemplary embodiment of the present invention, the weight average molecular weight of the resin composition (Mw: Weight average molecular weight) it may be 750,000 g / mol more than 3,000,000 g / mol or less. Specifically, the weight average molecular weight of the resin composition can be 750,000 g / mol more than 1,750,000 g / mol or less. More particularly, the weight average molecular weight of the resin composition can be up to 850,000 g / mol more than 1,600,000 g / mol. More particularly, the weight average molecular weight of the resin composition can be up to 1,200,000 g / mol more than 1,700,000 g / mol.
[68]
The weight average molecular weight in this specification, may be a value in terms of polystyrene as measured by GPC (gel permeation chromatography).
[69]
When adjusting the weight average molecular weight of the resin composition within a range, and then transferring the transfer film to the adherend, it is possible to prevent the peeling phenomenon that may occur during processing. Also possible to improve the cold workability of the transfer film layer, it is possible to prevent the poor adhesion between the adherend such as a glass panel caused by the cure shrinkage, temperature or humidity or the like, for example, when the installation surface is contracted or deformed by It can also be achieved excellent durability.
[70]
According to an exemplary embodiment of the present specification, the degree of dispersion of the resin composition may be at least 515 or less. More specifically, according to one embodiment of the present specification, the degree of dispersion of the resin composition may be 5 or more 12 or less, or 7 or more is 12 or less. More specifically, according to one embodiment of the present specification, the degree of dispersion of the resin composition can be 10 or more 12 or less, or 11 or more is 12 or less.
[71]
In this specification, the polydispersity value indicates a value given by dividing the average molecular weight (Mn) of weight average molecular weight (Mw) of the resin composition.
[72]
If the degree of dispersion of the resin composition is within this range, can be excellently implemented adhesion and excellent wettability is deposited in the secure transfer film layer first, it is possible to shorten the breaking distance of the transfer film layer proper physical properties in a continuous process It can be secured. Further, when the dispersion degree is within the above range, the resin composition can ensure a high heat resistance, the viscosity of the resin composition can be lowered to improve the formulation and coating properties of the additive.
[73]
According to an exemplary embodiment of the present invention, the resin composition may include in the control point of view of the adhesive performance, in addition a tackifier resin.
[74]
According to an exemplary embodiment of the present invention, the tackifier resin is a hydrocarbon resin or a hydrogenated product thereof; A rosin resin or a hydrogenated product thereof; Rosin ester resin or its hydrogenated product; Terpene resin or a hydrogenated product thereof; Terpene phenolic resin or its hydrogenated product; And polymerized rosin resins or polymerized rosin ester resins, at least one element selected from the group consisting of may comprise. However, it not limited to this, and may be used without limitation so long as it is generally used in the art.
[75]
According to an exemplary embodiment of the present invention, the amount of the tackifier resin is based on 100 parts by weight of the (meth) acrylate monomers, it can be not more than 100 parts by weight or more and 1 part by weight.
[76]
When the content of the tackifier resin is within the above range, it is possible to maximize the compatibility and improve cohesive strength of the film transfer layer. Specifically, it is possible that the minimal weight ratio of said tackifier resin is less than 1 part by weight by the addition is effective, when it exceeds 100 parts by weight, there is a fear that the deterioration or improvement compatible cohesive effect.
[77]
According to an exemplary embodiment of the present invention, the resin composition is within a range that does not affect the effect of the invention, an acrylic low molecular weight material, an epoxy resin, a UV stabilizer, an antioxidant, a colorant, a reinforcing agent, filler, anti-foaming agents, surfactants and plasticizers It may further comprise one or more additives selected from the group consisting of.
[78]
According to an exemplary embodiment of the present invention, the thickness of the transfer film layer may be up to more than 5 ㎛ 80 ㎛. More specifically, according to one embodiment of the present invention, the thickness of the transfer film layer may be up to less than 20 ㎛ 80 ㎛, or more than 20 ㎛ 70 ㎛ or less, or more than 30 ㎛ 70 ㎛.
[79]
By adjusting the thickness of the transfer film layer in the above range, it is possible to implement a natural rupture and the release stability in a continuous process.
[80]
According to an exemplary embodiment of the present invention, the thickness of the release liner may be up to more than 50 ㎛ 200 ㎛. More specifically, according to one embodiment of the present invention, the release liner can be made from more than 120 ㎛ using paper CP (chemical pulp) of 70 g weight below 130 ㎛ thickness. Within the above thickness range, the release liner can be prevented minimizes the cost burden, tear during peeling.
[81]
According to an exemplary embodiment of the present invention, a method of manufacturing the transfer film layer may be formed by curing the resin composition, the method thereof is not particularly limited.
[82]
According to an exemplary embodiment of the present invention, the transfer film layer to produce a transfer film layer by a method of applying the proper procedure presented a coating liquid prepared by using this resin composition, or by an ordinary means of a bar coater or the like, and curing can.
[83]
According to an exemplary embodiment of the present invention, the curing process can be carried out after removing sufficiently the bubbles causing components such as volatile components or reaction residues included in the interior of the resin composition or the coating solution. Accordingly, poor crosslinking density or molecular weight, such as the elastic modulus of the pressure-sensitive adhesive is too low, it is possible to have large bubbles present in the adhesive surface at high temperature to prevent such a problem to form a scatterer in inside.
[84]
In addition, a method of curing the resin composition or the coating solution is not particularly limited, and for example, it is possible to appropriately heat the coating layer after curing or the like, drying or aging (aging) processes.
Mode for the Invention
[85]
Hereinafter, the embodiment example in detail to illustrate the present invention in detail will be described. However, embodiments according to the invention can be modified in many different forms and not be construed to the scope of the present invention is not limited to the embodiments described below. The practice of this specification examples are provided to more fully illustrate the present invention to those having ordinary skill in the art.
[86]
Example 1
[87]
For 2-ethylhexyl acrylate 100 parts by weight of isobornyl acrylate and 28.6 parts by weight of the tetra-hydroperoxide furyl acrylate, 7.1 parts by weight of acrylic acid 7.1 parts by weight to the polymeric solution in the glass reactor of 1 liter portion weight average molecular weight of about 1,500,000, polydispersity of 10.5, the amount of the solid content to prepare a resin composition of 21% by weight. The insert portion an aziridine crosslinking agent, 0.01 parts by stirring sufficiently for the prepared resin composition 100 parts by weight Then, the silicone release polyethylene terephthalate (PET) was coated on the film, followed by 3 minutes. Thereafter the 100 ℃ oven at 50 ㎛ thickness of the transfer film the layers were prepared.
[88]
Moreover, the transfer film layer, thereby preparing a double-sided silicone release coating on a release liner A to E of the paper base material. The release peel force with respect to a reference tape (Tesa 7475) of the release liner A to E was as Table 1 below. Units of the release peel force in Table 1 is the g / in.
[89]
TABLE 1
A release liner The release liner B Release liner C Release liner D Release liner E
Frivolous side If jungbak Frivolous side If jungbak Frivolous side If jungbak Frivolous side If jungbak Frivolous side If jungbak
Measurement speed 0.3 m / min 7.0 9.7 9.5 12.2 10.3 12.5 22.0 42.8 10.6 28.5
3.0 m / min 12.7 29.0 12.8 32.3 13.6 31.3 56.1 100.5 15.3 65.2

[90]
A laminating the prepared transfer film layer on jungbak surface of the release liner A was then peeled off the silicone release polyethylene terephthalate (PET) film was wound. And an inorganic material to prepare a transfer tape take-up by carrying out aging (Aging) for 48 hours at 50 ℃ oven.
[91]
Example 2
[92]
Except that the laminated layer on the transfer film jungbak surface of the release liner B, which was prepared for the inorganic material transfer tape take-up in the same manner as in Example 1.
[93]
[ Example 3]
[94]
Except that the laminated layer on the transfer film jungbak surface of the release liner, and C, were prepared inorganic material transfer tape take-up in the same manner as in Example 1.
[95]
[ Comparative Example 1]
[96]
Except that the laminated layer on the transfer film jungbak surface of the release liner D, and the inorganic material was prepared in the transfer tape take-up in the same manner as in Example 1.
[97]
Comparative Example 2
[98]
Except that the laminated layer on the transfer film jungbak surface of the release liner E, which was prepared for the inorganic material transfer tape take-up in the same manner as in Example 1.
[99]
Example 4
[100]
Except that controlling the thickness of the transfer film layer 75 ㎛ to prepare a transfer film layer in the same manner as in Example 1. Furthermore, it was then laminated to the transfer film layer to the release liner A peel the silicone release polyethylene terephthalate (PET) film was wound. And an inorganic material to prepare a transfer tape take-up by carrying out aging (Aging) for 48 hours at 50 ℃ oven.
[101]
[Comparative Example 3]
[102]
2-ethylhexyl acrylate to solution polymerization in a glass reactor of 1 liters of acrylic acid 11.1 parts by weight based on 100 parts by weight to prepare a resin composition is about 1.5 million, dispersity 7.08, the amount of solid content of 15% by weight of the weight average molecular weight. The insert portion an aziridine crosslinking agent, 0.01 parts by stirring sufficiently for the prepared resin composition 100 parts by weight Then, the silicone release polyethylene terephthalate (PET) was coated on the film, followed by 3 minutes. Thereafter the 100 ℃ oven at 50 ㎛ thickness of the transfer film the layers were prepared.
[103]
Furthermore, the release liner was laminated on the B side jungbak silicone release polyethylene terephthalate (PET) film was peeled off and wound on. And an inorganic material to prepare a transfer tape take-up by carrying out aging (Aging) for 48 hours at 50 ℃ oven.
[104]
Comparative Example 4
[105]
Comparative after producing a transfer film layer was provided in like manner as Example 3, was peeled off the release liner D after the silicon release polyethylene terephthalate (PET) film was laminated on the wound. And an inorganic material to prepare a transfer tape take-up by carrying out aging (Aging) for 48 hours at 50 ℃ oven.
[106]
[ Comparative Example 5]
[107]
2-ethylhexyl acrylate, based on 100 parts by weight of polymerized solution in isobornyl acrylate 28 parts by weight of acrylic acid 11.1 weight parts of a glass reactor of 1 liter was prepared in about 1.2 million, a resin composition having a weight average molecular weight, polydispersity 3.21. The insert portion an aziridine crosslinking agent, 0.01 parts by stirring sufficiently for the prepared resin composition 100 parts by weight Then, the silicone release polyethylene terephthalate (PET) was coated on the film, followed by 3 minutes. Thereafter the 100 ℃ oven at 50 ㎛ thickness of the transfer film the layers were prepared.
[108]
Moreover, the transfer film layer was peeled off the silicone release coating of the release liner B and then laminating the surface jungbak silicone release polyethylene terephthalate (PET) film on both sides of the paper base material and the take-up. And an inorganic material to prepare a transfer tape take-up by carrying out aging (Aging) for 48 hours at 50 ℃ oven.
[109]
[Comparative Example 6]
[110]
Except that controlling the thickness of film transfer layer 100 ㎛ to prepare a transfer film layer in the same manner as in Example 1. Furthermore, it was then laminated to the transfer film layer to the release liner A peel the silicone release polyethylene terephthalate (PET) film was wound. And an inorganic material to prepare a transfer tape take-up by carrying out aging (Aging) for 48 hours at 50 ℃ oven.
[111]
[112]
Experimental Example 1 The release peel force measurements
[113]
For Examples 1-4 and Comparative Examples 1-6 to measure the release liner as the release peel force of the transfer film layer of an inorganic material according to the transfer tape, an experiment was carried out as follows.
[114]
Width 60 ㎜ × length prepare inorganic material transfer tape sample in 150 ㎜, and the transfer film layer is then to only reach 100 ㎜ length in SUS face, twice at a rate of 10 ㎜ / sec by using a roller of 2 kg load It was attached to the reciprocating. After taking the release liner at one of the first and last off half bite jig, TA XT Plus Instrument: speed (manufacturer: Stable micro systems) to 180 degree angle and 0.3 m / min (or 3.0 m / min) with respect to the adherend surface by using the by stripping in a release liner by measuring the power of the time the separation was measured jungbak surface and frivolous side respectively of the release peel force of the transfer film layer and the release liner.
[115]
[116]
Table 2 shows the examples 1 to 3 and Comparative Examples 1 and 2 of the transfer film and the release layer peel strength between the release liner.
[117]
TABLE 2
Speed ​​(m / min) The release Peel force (g / in)
Example 1 Frivolous side 0.3 10.3
3.0 18.2
If jungbak 0.3 34.9
3.0 62.7
Example 2 Frivolous side 0.3 21.1
3.0 20.9
If jungbak 0.3 26.0
3.0 47.4
Example 3 Frivolous side 0.3 16.6
3.0 17.7
If jungbak 0.3 21.8
3.0 40.2
Comparative Example 1 Frivolous side 0.3 19.4
3.0 24.5
If jungbak 0.3 62.4
3.0 74.9
Comparative Example 2 Frivolous side 0.3 16.5
3.0 18.1
If jungbak 0.3 70.6
3.0 100.2

[118]
In the case of the first to the third embodiments, the jungbak surface and the transfer film layer of the release liner at a speed of 3 m / min it is shown the release resistance of 70 g / in or less when peeled off. Example 1 In to 3, so maintaining low the release peel force of the release liner and transfer film layer, when performing the continuous process, the transfer film layer and, after the release liner and transfer film layer upon stripping the blood adhered to the adherend deultteuneun the problem it did not occur from the complex. On the other hand, Comparative Examples 1 and 2, the release liner and transfer film layer is a release peel force is high, after attaching the transfer film layer to the adherend transfer film layer when the release liner and peel the deultteuneun from the adherend problem occurs between the case of there was a problem.
[119]
[120]
[Example 2]
[121]
Transfer characteristic measurement
[122]
For Examples 1-4 and Comparative Examples 1-6 to measure the transfer characteristic of the inorganic material of the transfer tape, an experiment was carried out as follows.
[123]
For the 300 ㎜ × 400 ㎜ size 50 ㎛ thickness of the PET film was fixed to the bottom surface. And, after 60 ㎜ width, length prepare the inorganic material transfer tape cut into a 200 ㎜, was attached to about 70 ㎜ of one end surface of the exposed layer transfer film at one end of the PET film. Further, to evaluate the transfer characteristics of the transfer film layer using a roller of 2 kg load and at the same time attached to the PET film by removing the release liner. Specifically, after the catch to be removed from the attachment 70 ㎜ area by peeling off the release liner by 50 ㎜ wrapped around the back of the roller, 5 m / to rate the attachment of min and removed the same rate adhering to roll to take place at the same time a transfer film was peeled off the layer and a release liner. If the PET film surface layer transfer film is transferred if was evaluated as ○, the transfer film layer is not adhered to the PET film left on the release liner was evaluated as ×.
[124]
Inorganic material of the transfer tape when the transfer characteristic ○ was possible a continuous process, the inorganic material of the transfer tape when the transfer characteristics × this was not a continuous process, because the transfer film layer is not transferred onto the adherend.
[125]
[126]
Initial release resistance measurement
[127]
Furthermore, as noted the experiment, such as to release the transfer film layer initially measuring the resistance.
[128]
Width were prepared inorganic material transfer tape samples of 60 ㎜ × length 150 ㎜. Then, the transfer film layer was twice by reciprocating at a speed of 10 ㎜ / sec attachment using a 2 kg load roller and then to only rest against the SUS 100 ㎜ length side. Furthermore, TA XT Plus equipment (manufacturer: Stable micro systems) and to tension the inorganic material transfer tape with a 90-degree angle and 2.4 m / min speed with respect to the adherend surface by using the power of the time which the elongation of the transfer film layer starts the initial release resistance was determined by measuring.
[129]
[130]
Table 3 shows Examples 1 to 4 and Comparative Example 1, the transfer characteristic of the inorganic material of the transfer tape to 6 and an initial release of a transfer-resistant film layer. Transfer characteristics and the initial release resistance according to Table 3 were measured as follows.
[131]
Also, Figure 2 and Comparative Example 1 is a measure of the initial release resistance of the inorganic material transfer tape graph according to the first embodiment. Specifically, the maximum peak value of 2 means a (force at the time that the elongation of the transfer film layer starts) force begins to jungbak surface and the transfer film layer of the release liner is removed, which can be seen as a first release resistance . For reference, the value of the power measured at the initial peak value after the period of about 2.5 ㎜ to about 12.5 ㎜ of Figure 2 will the force increasing the transfer film layer is not attached to the adherend is measured, and since the value of the force to be measured 0 falling section as means that the transfer film layer is not adhered to the transfer film layer and the adherend is attached to the adherend cutting.
[132]
TABLE 3
Transfer properties Initial release resistance (g / in)
Example 1 O 292
Example 2 O 500
Example 3 O 354
Example 4 O 341
Comparative Example 1 X 708
Comparative Example 2 X 638
Comparative Example 3 X 390
Comparative Example 4 X 530
Comparative Example 5 X 414
Comparative Example 6 O 629

[133]
Examples 1 to 4, the initial release resistance of the transfer film layer and the release peel force of jungbak surface of the release liner and transfer film layer is properly adjusted, it can be seen that the transfer characteristic is excellently implemented. That is, Examples 1-4 inorganic material transfer tape according to the touch can remove the release liner after attaching the transfer film layer to the adherend at the time of a continuous process without lifting phenomenon, Comparative Examples 1-5 are transfer film layer and release liner because the peel force between the release and / or initial release resistance of the transfer film layer is not properly controlled is shown the transfer characteristic is a continuous process is impossible.
[134]
Furthermore, and if the comparison to the thickness of the transfer film layer exceeds 80 ㎛ Example 6, the transfer characteristic of the transfer film layer or nateu satisfactorily displayed, the initial release resistance deultteuneun at too high transfer film layer is adhered problem . In the case of Comparative Example 6, a breaking away of the transfer film layer is too longer has a problem difficult to be applied to a continuous process without any cutting process.
[135]
Reference Numerals
[136]
100: release liner
[137]
101: frivolous side
[138]
102: jungbak surface
[139]
200: The transfer film layer
[140]
300: adherend

Claims
[Claim 1]
A release liner comprising a surface and a trifling jungbak surface; And comprising a transfer film layer provided on the surface of the jungbak, wherein jungbak surface with a release peel force was the transfer film layer of the transfer film layer 3 m / 10 g during the peeling in min speed / in more than 70 g / in the inorganic material transfer tape or less.
[Claim 2]
The method according to claim 1, the initial release resistance was 200 g / in more than 600 g / in the inorganic material transfer tape being less than the transfer of the film layer.
[Claim 3]
The method according to claim 1, the release peel force is the reference tape to 3 m / min rate to 20 g / in more than 50 g / in the inorganic material transfer tape being less than the time of peeling of the tape based on the tesa 7475 of the jungbak surface.
[Claim 4]
The method according to claim 1, wherein the transfer film layer is a (meth) acrylate monomers; A cycloalkyl group-containing acrylate monomer; Heterocycloalkyl group-containing acrylate monomer; And polar functional group-containing monomers; inorganic material transfer tape that is water curing of the resin composition comprising a.
[Claim 5]
The method according to claim 4, wherein the cycloalkyl group-containing acrylate content of the monomer is the (meth) acrylate monomer is more than 10 parts by weight per 100 parts by weight 40 parts by weight of the inorganic material transfer tape or less.
[Claim 6]
The method according to claim 4, wherein the heterocycloalkyl group-containing acrylate content of the monomer is the (meth) acrylate monomer is more than 1 part by weight based on 100 parts by weight of 15 parts by weight of the inorganic material transfer tape or less.
[Claim 7]
The method according to claim 4, wherein the content of the polar functional group-containing monomer is a (meth) acrylate monomers, inorganic material transfer tape or less than 1 part by weight based on 100 parts by weight of 10 parts by weight.
[Claim 8]
The method according to claim 4, wherein the resin composition comprises an acrylate-based crosslinking agents, isocyanate crosslinking agents, epoxy-based crosslinking agent, an aziridine crosslinking agent, and an inorganic material transfer tape further comprises at least one cross-linking agent is selected from the group consisting of a metal chelate crosslinking agent.
[Claim 9]
The method according to claim 4, weight average molecular weight of the resin composition is 750,000 g / mol more than 3,000,000 g / mol or less that of the inorganic material transfer tape.
[Claim 10]
The method according to claim 4, the degree of dispersion of the resin composition, inorganic material transfer tape or less than 515.
[Claim 11]
The method according to claim 1, wherein the inorganic material transfer tape thickness of the transfer film layer is not more than than 5 ㎛ 80 ㎛.
[Claim 12]
The method according to claim 1, wherein the inorganic material is a transfer tape of the inorganic material to the transfer tape wound around the form.
[Claim 13]
The method according to claim 12, wherein the frivolous surface and the transfer film layer of the release Peel force is an inorganic material film transfer tape to the transfer layer 3 m / min speed to peel when 10 g / in more than 25 g / in or less.