JP6733465B2 - Transfer hard coat film and hard coat laminate - Google Patents

Description

The present invention relates to a hard coat film for transfer and a hard coat laminate.

Conventionally, in a transfer hard coat film used for laminating a hard coat layer on a resin molded product, vigorous studies have been conducted in order to improve its functionality. For example, in Patent Document 1, at least a hard coat layer, a primer layer and a heat seal layer are arranged in this order on a base film, and the heat seal layer is preferably formed from the viewpoint of improving weather resistance. It is disclosed that an acrylic resin is used.

JP 2012-11677 A

However, although the conventional hard coat film for transfer can impart a certain hard coat property to the resin molded product, it is not sufficiently satisfactory in terms of imparting weather resistance. In particular, resin molded products used for exteriors and semi-exteriors, such as automobiles and vehicle windows, building windows, roof members such as terraces and carports, soundproof walls, windshields, and partitioning of balconies, are exposed to direct sunlight every day. Since it is exposed to wind and rain, extremely severe weather resistance is required.

In particular, as in Patent Document 1, in the transfer hard coat film in which the acrylic resin is used for the heat seal layer, cracks are likely to occur in the heat seal layer under a high temperature and high humidity environment. Further, under particularly severe high humidity environment, occurrence of white turbidity, peeling, wrinkles and the like, which are considered to be due to moisture absorption of the heat seal layer, were observed.

It is an object of the present invention to provide a transfer hard coat film and a hard coat laminate which are excellent in durability even in a severe high temperature and high humidity environment.

As a result of the inventors' earnest studies to solve the above problems, the heat seal layer contains an acrylic resin having a relatively high glass transition temperature and a low hydroxyl value vinyl chloride-vinyl acetate copolymer. Therefore, it was found that even in a severe high temperature and high humidity environment, the occurrence of cracks can be suppressed, and the appearance defect due to moisture absorption can be suppressed. More specifically, the present invention provides the following.

(1) At least a hard coat layer, a primer layer, and a heat seal layer are arranged in this order on the base film,
The heat-sealing layer is a transfer hard coat film containing an acrylic resin having a glass transition temperature of 80° C. or higher and a vinyl chloride-vinyl acetate copolymer having a hydroxyl value of 50 mgKOH/g or lower.

(2) In the case where the heat seal layer is made of acrylic resin (X) and vinyl chloride-vinyl acetate copolymer (Y), and the compounding ratio thereof is expressed by mass ratio (X)/(Y), 1 25 or more and 10 or less, The hard coat film for transfer as described in (1).

(3) The transfer hard coat film according to (1) or (2), wherein the glass transition temperature of the vinyl chloride-vinyl acetate copolymer is lower than 80°C.

(4) At least a heat-sealing layer, a primer layer, and a hard coat layer are arranged in this order on a resin substrate, and the heat-sealing layer comprises an acrylic resin having a glass transition temperature of 80° C. or higher and a hydroxyl value. Of 50 mgKOH/g or less and a vinyl chloride-vinyl acetate copolymer, a hard coat laminate.

(5) In the case where the heat seal layer is (X) an acrylic resin and (Y) a vinyl chloride-vinyl acetate copolymer, and the compounding ratio thereof is represented by a mass ratio of (X)/(Y), 1 25 or more and 10 or less, The hard-coat laminated body as described in (4).

(6) The hard coat film for transfer according to (4) or (5), wherein the vinyl chloride-vinyl acetate copolymer has a glass transition temperature of lower than 80°C.

(7) A hard coat laminate in which the transfer hard coat film according to any one of (1) to (3) is attached so that the heat seal layer is in contact with the resin substrate, and then the base film is peeled off. Body manufacturing method.

(8) The hard according to (7), wherein the transfer hard coat film according to any one of (1) to (3) is bonded to a resin substrate that has been molded in advance, and then the base film is peeled off. Method for producing coated body.

(9) The hard according to (7), in which the base film is peeled after injecting a resin into the hard coat film for transfer according to any one of (1) to (3) to integrate the resin. Method for producing coated body.

INDUSTRIAL APPLICABILITY The present invention can provide a hard coat film for transfer and a hard coat laminate which have excellent durability even in a severe high temperature and high humidity environment.

It is a cross-sectional schematic diagram which shows an example of the hard coat film for transfer of this invention. It is an example of the hard coat laminated body of this invention, Comprising: It is a cross-sectional schematic diagram showing (a) the form before the base film is peeled, and (b) the form in which the base film is peeled. is there. 3 is a graph showing the results of dynamic viscoelasticity measurement of acrylic resin A.

Hereinafter, embodiments of the present invention will be described in detail. However, the present invention is not limited to the following embodiments. The present invention can be implemented with appropriate modifications within the scope of the object.

<Transfer hard coat film>
As shown in FIG. 1, the transfer hard coat film 10 of the present invention is a transfer layer in which at least a hard coat layer 12, a primer layer 13, and a heat seal layer 14 are arranged in this order on a base film 11. 15 are stacked. The “arranged in this order” in the present invention is not limited to a structure in which only the base film 11, the hard coat layer 12, the primer layer 13, and the heat seal layer 14 are laminated. For example, the hard coat film for transfer 10 may be laminated with other layers as long as the effects of the present invention are not impaired. Examples of the other layers include a space between the base film 11 and the hard coat layer 12, a space between the hard coat layer 12 and the primer layer 13, a space between the primer layer 13 and the heat seal layer 14, and a heat seal layer 14. A partially formed colored layer (decorative layer) is disposed on at least one of the surfaces on the side opposite to the primer layer 13 side for the purpose of concealment, information display, designing, and the like. May be.

[Base film]
The base material film 11 plays a role as a support base material that supports the transfer layer 15, and is a layer that is peeled off after the transfer layer 15 is transferred to a resin base material that is a transfer target.

The constituent resin that constitutes the base material film 11 is not particularly limited as long as it can be used as a supporting base material and the transfer layer 15 can be peeled off. For example, a constituent resin may be a polyester resin film or a polyolefin resin film. preferable. Further, it is more preferable that the film is a stretched film. By constructing the base film 11 from these stretched films, shrinkage caused by heat treatment or cross-linking treatment by irradiation of ionizing radiation when manufacturing the hard coat film for transfer 10 is suppressed, and the hard coat for transfer is formed. The stability of the shape and dimensions of the film 10 and the hard coat laminate 1 can be improved.

Preferred examples of the polyester resin film include polyester resins such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polyarylate, polycarbonate, and ethylene terephthalate-isophthalate copolymer. Can be mentioned. Among these, PET and PBT are preferable, and PET is particularly preferable, in consideration of heat shrinkage during production of the transfer hard coat film 10 and shrinkage due to irradiation of ionizing radiation.

As the polyolefin resin film, considering that heat shrinkage during the production of the transfer hard coat film 10 and shrinkage due to irradiation with ionizing radiation are hard to occur, for example, polyethylene resin, polypropylene resin, polybutene resin, ethylene/propylene A stretched resin film made of a polyolefin resin such as a copolymer resin, an ethylene/propylene/butene copolymer resin, and an olefin thermoplastic elastomer is preferable. Of these, a stretched polypropylene resin film is preferable.

The stretched polyolefin resin may be either uniaxially stretched or biaxially stretched, but considering heat shrinkage during the production of the hard coat film for transfer, shrinkage due to irradiation with ionizing radiation, etc. It is preferably biaxially stretched. The sheet of the biaxially stretched polyolefin resin is usually heated to a glass transition temperature Tg or higher by using a longitudinal stretching machine, preferably stretched by 5 times or more and 30 times or less, and then a glass is stretched by using a width direction stretching machine. It is obtained by heating to a transition temperature Tg or higher and stretching in the width direction preferably 5 times or more and 30 times or less. Further, when the stretching ratio is within the above range, thermal shrinkage during the production of the transfer hard coat film 10 and shrinkage due to irradiation with ionizing radiation are less likely to occur.

The thickness of the base film 11 is not particularly limited, but may be 4 μm or more and 200 μm or less. If it is 4 μm or more, curling and wrinkles are less likely to occur, and if it is 200 μm or less, the cost can be kept low, the heat conduction efficiency does not decrease, and each layer is taken when peeling the substrate film 11 after transfer. Therefore, excellent transferability can be obtained. The base film 11 may have a multilayer structure. In that case, it is preferable that the thickness of the entire multilayer structure is within the above range.

The base film 11 may be subjected to a known release treatment on the surface of the base film 11 or a silicone resin, if necessary, in order to secure releasability between the base film 11 and the hard coat layer 12 at the time of transfer. You may provide a mold release layer. On the contrary, in order to improve the adhesion with the hard coat layer 12, surface treatment such as corona discharge treatment, plasma treatment, chromium oxidation treatment, flame treatment, hot air treatment, ozone/ultraviolet treatment, and application of an easily adhesive coating agent. May be given. The base film 11 may be a single layer using the above resin film alone, or may have a multi-layer structure in which a plurality of types of resin films are laminated.

[Hard coat layer]
The hard coat layer 12 is a layer formed of a cured product of a curable resin composition, and is hard-coated on the hard coat laminate which is located on the outermost surface and becomes a resin molded product after being transferred to a resin substrate that is a transfer target. It is a layer that plays a role of imparting coatability (scratch resistance) and also contributes to improvement of weather resistance.

The curable resin composition forming the hard coat layer 12 is not particularly limited, but examples thereof include polyester resin, epoxy resin, polyurethane resin, aminoalkyd resin, melamine resin, guanamine resin, urea resin, and thermosetting. A layer formed of a cured product of a transparent acrylic resin, an ionizing radiation curable resin or the like can be preferably mentioned. From the viewpoint of scratch resistance and weather resistance, a cured product of an ionizing radiation curable resin is preferable.

Ionizing radiation curable resin is a curable resin that is cured by irradiation with ionizing radiation, as the ionizing radiation, those having an energy quantum capable of polymerizing or crosslinking molecules among electromagnetic waves or charged particle beams, for example, In addition to ultraviolet rays (UV) or electron beams (EB), electromagnetic waves such as X-rays and γ rays, and charged particle beams such as α rays and ion rays are also used.

As the ionizing radiation curable resin that can be used for the hard coat layer 12, a polymerizable oligomer (prepolymer) or a polymerizable polymer that has been conventionally used as a resin having ionizing radiation curability can be appropriately selected and used. it can. From the viewpoint of obtaining good curing characteristics, it is difficult to bleed out, and even if it is about 95% or more and 100% or less based on the solid content, it has coatability, and when it is cured to form the hard coat layer 12, curing shrinkage occurs. Those that are difficult are preferred.

As the polymerizable oligomer, an oligomer having a radically polymerizable unsaturated group in the molecule, for example, epoxy (meth)acrylate-based, urethane (meth)acrylate-based, polyether-based urethane (meth)acrylate or caprolactone-based urethane (meth) Preferred examples include acrylate, polyester (meth)acrylate-based, and polyether (meth)acrylate-based oligomers, and urethane (meth)acrylate-based oligomers are more preferred. The above (meth)acrylate means acrylate or methacrylate.

Among these oligomers, polyfunctional polymerizable oligomers are preferable, and the number of functional groups is preferably 2 or more and 15 or less from the viewpoint of imparting scratch resistance due to a high crosslinking density, and 2 or more and 8 or less from the viewpoint that curing shrinkage hardly occurs. It is more preferably 2 or more and 6 or less.

Examples of the monofunctional polymerizable oligomer include caprolactone-based urethane (meth)acrylate obtained by the reaction of caprolactone-based polyol, organic isocyanate and hydroxy(meth)acrylate, and (meth)acrylate in the side chain of polybutadiene oligomer. Polymeric urethane (meth)acrylates such as polybutadiene (meth)acrylate having a group and having high hydrophobicity can be mentioned.

As the polymerizable polymer, a polymer having a radically polymerizable unsaturated group in the molecule, for example, epoxy (meth)acrylate-based, urethane (meth)acrylate-based or polyether-based urethane (meth)acrylate or polycaprolactone-based urethane (meth ) Acrylate, polyester (meth)acrylate-based, polyether (meth)acrylate-based polymers and the like are preferable, and polycaprolactone-based urethane (meth)acrylate or urethane (meth)acrylate-based is more preferable. The above (meth)acrylate means acrylate or methacrylate. You may use these polymers individually or in combination of multiple.

Further, the curable resin composition forming the hard coat layer 12 may further contain scratch resistant particles in order to improve scratch resistance. The scratch-resistant particles include inorganic particles and organic particles, and examples of the inorganic particles include inorganic particles such as alumina, silica, kaolinite, iron oxide, diamond, and silicon carbide. On the other hand, as the organic particles, synthetic resin beads such as crosslinked acrylic resin and polycarbonate resin are preferably used. Examples of the particle shape include sphere, ellipsoid, polyhedron, and scaly shape, and are not particularly limited, but spherical shape is preferable in terms of higher hardness and excellent scratch resistance.

The particle size of the scratch-resistant particles is not particularly limited, but from the viewpoint of the hardness and smoothness of the hard coat layer 12, it is preferably 0.1 μm or more and 4 μm or less, and more preferably 0.5 μm or more and 3 μm or less. The average particle size of the particles is the volume average particle size. The volume average particle size can be measured by a laser diffraction type or laser scattering type particle size distribution measurement.

The curable resin composition used for forming the hard coat layer 12 may include a weather resistance improver in order to obtain excellent weather resistance. Examples of the weather resistance improver include an ultraviolet absorber and a light stabilizer. The ultraviolet absorber absorbs harmful ultraviolet rays and improves long-term weather resistance and stability. Further, the light stabilizer itself hardly absorbs ultraviolet rays, but it is possible to obtain stabilization by efficiently trapping harmful free radicals generated by ultraviolet rays.

As the ultraviolet absorber, inorganic ones such as titanium dioxide, cerium oxide, zinc oxide and the like, and organic benzotriazole and triazine ultraviolet absorbers are preferably mentioned, and among them, the triazine ultraviolet absorbers are preferable. Further, as the light stabilizer, for example, a hindered amine light stabilizer (HALS) is preferably exemplified.

Among the triazine-based UV absorbers, the hydroxyphenyltriazine-based UV absorber is more preferable. Examples of the hydroxyphenyl triazine-based ultraviolet absorber include 2-(2-hydroxy-4-[1-octyloxycarbonylethoxy]phenyl)-4,6-bis(4-phenylphenyl)-1,3,5- Triazine, 2-[4-[(2-hydroxy-3-dodecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2,4-bis[2-hydroxy-4-butoxyphenyl]-6-(2,4-dibutoxyphenyl)-1,3,5-triazine, 2-[4-[(2-hydroxy-3-tri) Decyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-[4-[(2-hydroxy-3-(2 '-Ethyl)hexyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine and the like are preferably mentioned, and these may be used alone or in combination. Can be used in combination.

Further, the hindered amine light stabilizer is preferably a hindered amine light stabilizer having a reactive functional group. The reactive functional group is not particularly limited as long as it has reactivity with an ionizing radiation-curable resin, and examples thereof include a functional group having an ethylenic double bond such as a (meth)acryloyl group, a vinyl group or an allyl group. And the like, and at least one selected from these is preferable. Of these, a (meth)acryloyl group is preferable.

Examples of hindered amine light stabilizers having such a reactive functional group include 1,2,2,6,6-pentamethyl-4-piperidinyl methacrylate and bis(1,2,2,6,6-pentamethyl- 4-piperidyl) sebacate, bis(2,2,6,6-pentamethyl-4-piperidyl) sebacate, bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate, methyl (1,2,2) 2,6,6-Pentamethyl-4-piperidinyl)sebacate, 2,4-bis[N-butyl-N-(1-cyclohexyloxy-2,2,6,6-tetramethylpiperidin-4-yl)amino] Preferred examples thereof include -6-(2-hydroxyethylamine)-1,3,5-triazine).

The curable resin composition for forming the hard coat layer may contain various additives as long as the performance thereof is not impaired. As various additives, for example, a polymerization inhibitor, a cross-linking agent, an antistatic agent, an adhesion improver, an antioxidant, a leveling agent, a thixotropic agent, a coupling agent, a plasticizer, a defoaming agent, a filler, a solvent. Etc.

When an ultraviolet curable resin is used as the ionizing radiation curable resin, it is desirable to add a photopolymerization initiator in an amount of 0.1 part by mass or more and 5 parts by mass or less based on 100 parts by mass of the curable resin. The photopolymerization initiator can be appropriately selected from those conventionally used.

The thickness of the hard coat layer 12 is not particularly limited, but is preferably about 1 μm or more and 20 μm or less. From the viewpoint of obtaining excellent weather resistance, its durability, and transparency, it is more preferably 2 μm or more and 20 μm or less, still more preferably 2 μm or more and 10 μm or less, and most preferably 2 μm or more and 6 μm or less. Further, by making the thickness of the hard coat layer 12 thinner, it is possible to reduce the occurrence of curing shrinkage, and it is possible to improve the production stability and the production efficiency. Therefore, the thickness is particularly 2 μm or more and 4 μm or less. Is preferred.

[Primer layer]
The primer layer 13 is composed of a resin composition for forming a primer layer containing a binder resin and an antiblocking agent, functions as a stress relaxation layer for the hard coat layer 12, and plays a role of improving the adhesion of the hard coat layer 12. It is a layer.

The binder resin forming the primer layer 13 preferably contains a two-component curable resin composed of a main agent and a curing agent.

The main component of the binder resin that constitutes the primer layer 13 is not particularly limited, and examples thereof include polyurethane resin, (meth)acrylic resin, vinyl chloride-vinyl acetate copolymer, polyester resin, utilal resin, chlorinated polypropylene, chlorinated polyethylene. Etc. These binder resins may be used alone or in combination of two or more. Among these binder resins, polyurethane resin is preferable from the viewpoint of adhesion and weather resistance.

The polyurethane resin is more preferably a polyurethane resin having an acrylic skeleton in the polymer chain of the polyurethane resin from the viewpoint of weather resistance and durability. Examples of the polyurethane resin having an acrylic skeleton in the polymer chain include, for example, a urethane acrylic copolymer that is a copolymer of a urethane component and an acrylic component, a hydroxyl group or an isocyanate group as a polyol component or a polyisocyanate component that constitutes polyurethane. There is an acrylic resin having a, and among them, a urethane acrylic copolymer is preferable. The urethane acrylic copolymer may be obtained, for example, by a method of reacting an acrylic resin having at least two hydroxyl groups in one molecule with a polyol compound and an isocyanate compound (see Japanese Patent Laid-Open No. 6-100563, etc.), or an unsaturated double copolymer. It can be obtained by a method of reacting a urethane prepolymer having a bond at both ends with an acrylic monomer (see JP-A-10-1524, etc.) and the like.

Among the above-mentioned polyurethane resins having an acrylic skeleton in the polymer chain, those having a polycarbonate skeleton or a polyester skeleton in the polymer chain are preferable from the viewpoint of adhesion to the hard coat layer 12. As the polyurethane having an acrylic skeleton in the polymer chain and further having a polycarbonate skeleton or a polyester skeleton, a polycarbonate urethane acryl copolymer which is a copolymer of a polycarbonate urethane component and an acrylic component, or a polyester urethane component A polyester-based urethane acrylic copolymer, which is a copolymer of an acrylic component and an acrylic component, is more preferable, and it is particularly preferable to use a polycarbonate-based urethane acrylic copolymer from the viewpoint of providing even more excellent weather resistance. These polyurethanes may be used alone or in combination of two or more.

The polycarbonate-based urethane acrylic copolymer can be obtained, for example, by copolymerizing a polycarbonate-based urethane obtained by reacting a carbonate diol and diisocyanate with a diol having an acrylic skeleton. The polycarbonate-based urethane acrylic copolymer can also be obtained by reacting a diol having an acrylic skeleton with a carbonate diol and diisocyanate. Here, as the diol having an acrylic skeleton, specifically, (meth)acrylic acid, a (meth)acrylic acid alkyl ester having an alkyl group having about 1 to 6 carbon atoms, or an oligomer obtained by radical polymerization of these, or A compound in which two hydroxyl groups are introduced into a prepolymer (degree of polymerization of 2 to 10) is included.

Specific examples of the diisocyanate include aliphatic incyanates such as hexamethylene diisocyanate; alicyclic incyanates such as isophorone diisocyanate and hydrogen-converted xylylene diisocyanate. In addition, as the carbonate diol, specifically, a compound represented by the following general formula (1) (in the formula, R ^{1 s} are the same or different and have 1 to 12 carbon atoms which may have a substituent) The following alkylene group, a divalent heterocyclic group having 1 to 12 carbon atoms which may have a substituent, or a divalent fat having 1 to 12 carbon atoms which may have a substituent. It is a cyclic group, and m ₁ is an integer of 1 or more and 10 or less) and the like.
_{^{HO- [R 1 -O- (C =}} O) -O] m 1 -R 1 -OH (1)

The polyester-based urethane acrylic copolymer can be obtained, for example, by copolymerizing a polyester-based urethane obtained by reacting an ester diol and diisocyanate with a diol having an acrylic skeleton. Alternatively, it can also be obtained by reacting a diol having an acrylic skeleton with an ester diol and a diisocyanate. Here, the diol and diisocyanate having an acrylic skeleton are the same as those used in the production of the above-mentioned polycarbonate urethane acrylic copolymer. In addition, as the ester diol, specifically, a compound represented by the following general formula (2) (wherein R ² is the same or different, and may have a substituent group having 1 to 12 carbon atoms) Alkylene group, a divalent heterocyclic group having 1 to 12 carbon atoms which may have a substituent, or a divalent alicyclic group having 1 to 12 carbon atoms which may have a substituent. Group, and m ₂ is an integer of 1 or more and 10 or less) and the like.
_{^{HO- [R 2 -O- (C =}} O)] m 2 -R 2 -OH (2)

The polyester-based urethane acrylic copolymer can also be obtained by radically polymerizing a polyester-based polyurethane prepolymer having a radical-polymerizable group introduced therein, with an acrylic monomer. The acrylic monomer is the same as that used in the production of the above polycarbonate-based urethane acrylic copolymer.

The polyurethane used for the primer layer 13 preferably has an acrylic component content of 1% by mass or more and 30% by mass or less in order to provide excellent weather resistance. Here, the content of the acrylic component in the polyurethane is the ratio (mass %) of the monomer constituting the acrylic skeleton to the total mass of the polyurethane. From the viewpoint of providing further excellent weather resistance, the content of the acrylic component in the polyurethane is preferably 5% by mass or more and 20% by mass or less. The content of the acrylic component in the polyurethane is calculated by measuring the NMR spectrum of the polyurethane and determining the ratio of the peak area attributed to the acrylic component to the total peak area.

When the polyurethane and the other binder resin are used in combination in the primer layer 13, the compounding ratio thereof is not particularly limited, but for example, the polyurethane is 50 parts by mass or more per 100 parts by mass of the binder resin. The amount may be set to preferably 70 parts by mass or more, more preferably 85 parts by mass or more.

From the viewpoint of accelerating the curing of the above-mentioned main agent, for example, an isocyanate curing agent such as tolylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, xylylene diisocyanate, cyclohexanephenylene diisocyanate, naphthalene-1,5-diisocyanate and the like can be mentioned. The amount of the curing agent used is preferably 1 part by mass or more and 40 parts by mass or less, more preferably 10 parts by mass or more and 30 parts by mass or less, and more preferably 20 parts by mass or more and 30 parts by mass or less with respect to 100 parts by mass of the resin as the main component. More preferable.

The primer layer 13 may contain various additives other than the above, as required, within a range not impairing the effects of the present invention. Examples of such additives include weather resistance improvers such as ultraviolet absorbers and light stabilizers, abrasion resistance improvers, infrared absorbers, light stabilizers, antistatic agents, adhesion improvers, leveling agents, Examples include thixotropic agents, coupling agents, plasticizers, defoamers, fillers, solvents, colorants, and the like. These additives can be appropriately selected and used from commonly used additives.

The thickness of the primer layer 13 according to the present embodiment is not particularly limited, but examples thereof include 0.1 μm or more and 10 μm or less, preferably 0.1 μm or more and 5 μm or less, and more preferably 1 μm or more and 4 μm or less.

(Heat seal layer)
The heat seal layer 14 according to the present embodiment is a layer provided for laminating the hard coat layer 12 on the resin substrate 20 in order to form the hard coat layer 12 on the surface of the resin substrate 20.

The resin constituting the heat seal layer 14 is determined according to the material of the resin substrate 20 and the transfer temperature and pressure at the time of transfer, and an acrylic resin having a glass transition temperature Tg of 80° C. or higher and a hydroxyl group. And a vinyl chloride-vinyl acetate copolymer having a value of 50 mgKOH/g or less.

Examples of the acrylic resin include homopolymers of acrylic acid esters, copolymers of two or more different acrylic acid ester monomers, or copolymers of acrylic acid esters and other monomers. Methyl acrylate, polyethyl acrylate, polypropyl acrylate, polybutyl acrylate, methyl acrylate-butyl acrylate copolymer, ethyl acrylate-butyl acrylate copolymer, ethylene-methyl acrylate copolymer, An acrylic resin made of a homopolymer or a copolymer containing an acrylic ester such as a styrene-methyl acrylate copolymer is preferably used.

As the vinyl chloride-vinyl acetate copolymer, Solvain C, Solvain CL, Solvain CH, Solvain CN, Solvain C5, Solvain M, Solvain MF, Solvain A, Solvain AL, Solvain TA5R, Solvain TAO, Solvain MK6, Solvain TA2 ( All examples include trade names, manufactured by Nissin Chemical Industry Co., Ltd., and the like.

When the heat seal layer was made of acrylic resin only, cracks were likely to occur in a high temperature environment. Generally, by lowering the glass transition temperature Tg of the resin used for the heat-sealing layer, it becomes easy to follow the linear expansion of the upper and lower layers (primer layer 13, resin base 20, etc.). However, in a high-humidity environment, even if an acrylic resin having a low glass transition temperature of about 70° C. is used for the heat-sealing layer, the acrylic resin absorbs moisture and the hardness changes greatly (stress can be easily accumulated). Therefore, white turbidity, peeling, wrinkles, and the like occur, and the appearance is greatly impaired. As described above, it has been difficult to say that the heat seal layer made of only the acrylic resin has excellent weather resistance.

Therefore, as a resin forming the heat seal layer 14, an acrylic resin having a relatively high glass transition temperature Tg of 80° C. or higher is mixed with a vinyl chloride-vinyl acetate copolymer having a relatively low glass transition temperature to obtain a glass. The transition temperature Tg is shifted to the low temperature side. By using this mixture for the heat-sealing layer 14, the heat-sealing layer 14 easily follows the linear expansion of the upper and lower layers (primer layer 13, resin base 20, etc.), and the occurrence of cracks is suppressed. .. Further, by setting the hydroxyl value of the vinyl chloride-vinyl acetate copolymer to 50 mgKOH/g or less, it is possible to suppress the moisture absorption of the heat seal layer 14 even in a high humidity environment, and the heat seal layer 14 becomes cloudy. It is possible to suppress the occurrence of appearance defects such as peeling and wrinkles.

From the above points, the glass transition temperature Tg of the acrylic resin is 80° C. or higher, preferably 90° C. or higher, more preferably 100° C. or higher. The upper limit is not particularly limited, but if it is too high, cracks are likely to occur, so it is preferably 110° C. or lower, more preferably 105° C. or lower. By setting the glass transition temperature Tg of the acrylic resin in the above range, it is possible to suppress the occurrence of cracks and appearance defects such as cloudiness, peeling, and wrinkles even in a high humidity environment.

The hydroxyl value of the vinyl chloride-vinyl acetate copolymer is 50 mgKOH/g or less, preferably 45 mgKOH/g or less, more preferably 30 mgKOH/g or less, still more preferably 20 mgKOH/g or less. The lower limit value is not particularly limited and may be 0 mgKOH/g. When the hydroxyl value of the vinyl chloride-vinyl acetate copolymer is within the above range, moisture absorption of the heat seal layer 14 can be suppressed even in a high temperature environment. The hydroxyl value is measured according to JIS K0070.

The glass transition temperature Tg of the vinyl chloride-vinyl acetate copolymer is generally lower than the glass transition temperature Tg of the acrylic resin and is not particularly limited as long as it is lower than the glass transition temperature Tg of the acrylic resin, but preferably 80 It is lower than 0°C, more preferably 75°C or lower. When the glass transition temperature Tg of the vinyl chloride-vinyl acetate copolymer is within the above range, the glass transition temperature Tg of the entire resin constituting the heat seal layer 14 can be lowered, and the heat seal layer can be used even in a high temperature environment. The generation of 14 cracks can be suppressed.

The glass transition temperature Tg of the acrylic resin and the vinyl chloride-vinyl acetate copolymer in the heat seal layer 14 can be measured by a dynamic viscoelasticity measuring device (DMA).

Further, in the heat seal layer 14, when the acrylic resin is (X), the vinyl chloride-vinyl acetate copolymer is (Y), and the compounding ratio thereof is expressed as (X)/(Y) in mass ratio, it is preferable. Is 1.25 or more and 10 or less, more preferably 1.6 or more and 7.5 or less, and still more preferably 2.5 or more and 5 or less. Since the compounding ratio of the acrylic resin and the vinyl chloride-vinyl acetate copolymer is in the above range, the occurrence of cracks, white turbidity, peeling, and appearance defects such as wrinkles can be suppressed even in a high humidity environment. You can From the viewpoint of preventing yellowing of the heat seal layer 14 due to light, the compounding ratio (X)/(Y) is preferably 1.25 or more.

As the resin constituting the heat seal layer 14, other than the acrylic resin and the vinyl chloride-vinyl acetate copolymer, other resins may be contained within a range not impairing the effects of the present invention. However, among the resins constituting the heat seal layer 14, it is preferable to contain at least 80% by mass or more of the acrylic resin and the vinyl chloride-vinyl acetate copolymer. Examples of other resins include polyamide resins, polyester resins, chlorinated polypropylene, chlorinated rubber, urethane resins, epoxy resins, styrene resins, and other heat-sealing resins. It may be selected according to the application.

The thickness of the heat seal layer 14 is preferably thicker than that of the primer layer 13, but the function of adhering the transfer layer including the hard coat layer 12 to the resin substrate 20 and the excellent transparency are ensured. From the viewpoint, it is preferably 1 μm or more and 7 μm or less, and more preferably 1 μm or more and 6 μm or less.

The surface of the transfer hard coat film 10 of the present embodiment can be protected by attaching a cover film (protective film) made of a resin such as polyethylene resin on the heat seal layer 14. When providing a cover film, the transfer hard coat film 10 of the present embodiment is peeled off the cover film to expose the heat seal layer 14, and is transferred to the resin substrate 20 through the surface of the heat seal layer 14.

<Hard coat laminate>
The configuration of the hard coat body of the present invention will be described below with reference to FIG. The hard coat body of the present invention is obtained by transferring the transfer layer 15 to the resin substrate 20 via the heat seal layer 14 using the above-mentioned transfer hard coat film 10. Specifically, as shown in FIG. 2A, the hard coat body of the present invention has at least the heat seal layer 14, the primer layer 13, the hard coat layer 12, and the base film 11 on the resin substrate. They are arranged in this order. Arrangement of the base film 11 is arbitrary, and as shown in FIG. 2B, the base film 11 may be peeled from the transfer layer 15 at any stage in the use process.

It should be noted that the term “laminated on a resin substrate” means that the portion including the hard coat layer 12 of the transfer hard coat film 10 is directly laminated on the resin substrate 20 as well as indirectly via a printing layer or the like. It also includes those in a form in which the layers are laminated. The hard coat layer 12 is not limited to be laminated on one surface of the resin substrate 20, and the hard coat layer 12 may be laminated on both surfaces of the resin substrate 20. With the hard coat laminate 1 having such a layer structure, preferable scratch resistance can be imparted to both surfaces of the resin substrate 20.

[Resin substrate]
The resin substrate 20 may be appropriately selected according to the desired resin molded body. Examples of the resin that constitutes the resin substrate 20 required to have heat resistance and transparency include acrylic resins such as polycarbonate resin and ABS resin. The thickness of the resin substrate 20 is usually preferably 1 mm or more and 20 mm or less, and more preferably 2 mm or more and 10 mm or less. If the resin substrate 20 is too thin, practical strength such as surface rigidity becomes insufficient, and if the resin substrate 20 is too thick, the workability of the resin substrate 20 is affected. The shape of the resin substrate 20 may be appropriately selected according to the intended use of the resin molded body, and is not limited to the plate shape.

According to the hard coat laminate 1 of the present invention, the heat-sealing layer 14 containing an acrylic resin having a glass transition temperature of 80° C. or higher and a vinyl chloride-vinyl acetate copolymer having a hydroxyl value of 50 mgKOH/g or lower. Since it is provided, it is possible to suppress the occurrence of cracks in the heat seal layer 14 and appearance defects such as clouding, peeling and wrinkles even in a severe high temperature environment.

<Method for Manufacturing Hard Coat Laminate> A method for manufacturing a hard coat laminate according to the present invention comprises the steps of attaching the above-mentioned transfer hard coat film 10 so that the heat seal layer 14 is in contact with the resin substrate 20, and then releasing the layer. This is a method of obtaining the hard coat laminate 1 by peeling the base film 11 for a mold. More specifically, a method in which the transfer hard coat film 10 is attached to a preformed resin substrate 20 and then the substrate film 11 is peeled off (hereinafter referred to as the first method); In this case, a method (hereinafter, referred to as a second method) of peeling the base material film 1 after it is integrated with the transfer hard coat film 10 and the like can be mentioned.

[First method]
As a method for producing the hard coat body by the first method, the resin substrate 20 is molded by extrusion molding or the like, and immediately after or after cooling, the surface of the heat seal layer 14 of the transfer hard coat film 10 is rolled using a roll or the like. A method of laminating the resin substrate 20 by pressure bonding is mentioned. When the surface of the heat-sealing layer 14 of the transfer hard coat film 10 is pressure-bonded to the resin substrate 20, heating may be performed to the extent that at least a part of the heat-sealing layer 14 is melted, if necessary. The heating of the transfer hard coat film 10 can be performed by preheating the transfer hard coat film 10 before pressure bonding, heating at the same time as pressure bonding with a hot press roll, or the like. Further, the resin substrate 20 may be preheated before the transfer. After the transfer hard coat film 10 is attached to the resin substrate 20, the base film 11 may be peeled and removed. Further, after the transfer hard coat film 10 is attached to the resin substrate 20, the transfer hard coat film 10 may be further subjected to a forming process such as a bending process. Such molding processing may be performed either before or after peeling the base film 11.

[Second method]
The hard coat body can be produced by the second method by a known injection molding method using a transfer hard coat film. Specifically, as one aspect of the method for producing a hard coat body by the second method, there is a method of carrying out the following steps I to II.
Step I: The transfer hard coat film 10 is inserted into the injection molding die (placed on the resin side where the heat seal layer 14 is injected), the injection molding die is closed, and the resin in the fluidized state is injected into the mold. And the transfer hard coat film 10 are integrated.
Step II: The base film 11 is peeled off from the transfer hard coat film 10 integrated with the resin substrate 20.

In the first step, in order to facilitate the integration of the transfer hard coat film 10 with the injected resin, if necessary, before the transfer hard coat film 10 is inserted into the injection mold, the transfer hard coat film 10 may be formed. 10 may be prepared and heated. Further, the resin injected by the residual heat of the injected resin and the transfer hard coat film 10 can be integrated without preheating the transfer hard coat film 10. In the step I, the transfer hard coat film 10 inserted into the injection mold may be attached to the injection mold by vacuum suction or the like before injecting the resin.

Moreover, in the step II, the peeling of the base material film 11 may be performed at the same time as the injection mold is separated, or may be performed after the injection mold is separated. Moreover, you may install a protective film on the surface of the hard-coat layer 2 after peeling the base material film 11 in a process II. Further, the base film 11 may not be peeled off until the hard coat laminate is used, and the state in which the base film 11 is attached may be maintained.

Further, as another aspect of the method for producing a hard coat body by the second method, there is a method of performing the following first to third steps.
First step: The hard coat film 10 for transfer is supplied and fixed between the pair of male and female molds in the mold open state so that the surface of the heat seal layer 14 faces the cavity side. Further, the heat seal layer 14 of the transfer hard coat film 10 is heated and softened, and vacuum suction is performed from the mold side facing the base film 11 to transfer the hard coat film 10 for transfer to the movable mold. The transfer hard coat film 10 is preformed by closely adhering along the shape.
Second step: After the molds are clamped, a resin in a fluid state is injected and filled into a cavity formed by the molds to solidify the resin substrate 20 and the transfer hard coat film 10. Stack and integrate.
Third step: The movable mold is separated from the fixed mold, the resin base body 20 on which the transfer hard coat film 10 is integrated is taken out, and the base film 11 is peeled from the transfer hard coat film 10.

Further, in the third step, the peeling of the base material film 1 may be performed at the same time as the separation of the mold, or may be performed after the separation of the mold. In addition, a protective film may be placed on the surface of the hard coat layer 2 after the base film 1 is peeled off in the third step. Further, the base film 1 may not be peeled off until the hard coat laminate is used, and the state in which the base film 1 is attached may be maintained.

Hereinafter, the present invention will be described more specifically by showing Examples and Comparative Examples, but the present invention is not limited to the following Examples.

[Example 1]
As the base film 11, a film made of polyethylene terephthalate resin (PET) having a thickness of 50 μm (“Toyobo ester film E5101 (trade name)”, manufactured by Toyobo Co., Ltd.) was used. A curable resin composition for forming a hard coat layer is applied to form an uncured resin layer, which is then irradiated with an electron beam under the conditions of 90 kV and 7 Mrad (70 kGy) to crosslink and cure the uncured resin layer. The hard coat layer 12 (layer thickness: 1.5 μm) was formed. Next, the surface of the hard coat layer 12 was subjected to corona discharge treatment, and then the following resin composition for forming a primer layer was applied to form a primer layer 13 (layer thickness: 2 μm).

Further, a heat seal layer 14 (layer thickness: 4 μm) was sequentially laminated using the following resin composition A for forming a heat seal layer to form a base film 11, a hard coat layer 12, a primer layer 13, and a heat. A hard coat film 10 for transfer having a seal layer 14 in order was obtained. In this example, methyl ethyl ketone was used as the solvent. The compounding ratio (hereinafter, mass ratio) of the acrylic resin A and the vinyl chloride-vinyl acetate copolymer A in Example 1 is 10:2. Table 1 below shows the compounding ratio of the acrylic resin and the vinyl chloride-vinyl acetate copolymer.

The resin substrate 20 made of a polycarbonate plate having a thickness of 2 mm was heated using a hot plate at 150°C. After arranging the manufactured transfer hard coat film 10 on one side of the heated resin substrate 20 so that the heat seal layer 14 is on the resin substrate 20 side, after heating and laminating three times with a hot laminating roll at 190° C. Then, the base film 11 was peeled off to prepare the hard coat laminate 1 in which the resin base 20 and the transfer layer 15 were integrated.

[Curable resin composition for forming hard coat layer]
Hexafunctional urethane acrylate: 50 parts by mass Caprolactone-based urethane acrylate: 50 parts by mass With respect to 100 parts by mass of the above curable resin (solid content 70%),
Non-reactive silicone compound: 0.2 parts by mass

[Resin composition for forming primer layer]
Polycarbonate urethane acrylic copolymer: 100 parts by mass Antiblocking agent (silica particles (average particle diameter 2 μm)): 3 parts by mass Curing agent: Hexane methylene diisocyanate: 25 parts by mass

[Resin Composition A for Forming Heat Seal Layer]
Acrylic resin A; glass transition temperature Tg 100° C., molecular weight 100,000:100 parts by mass With respect to 100 parts by mass of the acrylic resin fat A (solid content 20%),
Vinyl chloride-vinyl acetate copolymer A (“Solvyne CH” manufactured by Nisshin Chemical Industry Co., Ltd.), glass transition temperature Tg 73° C., hydroxyl value 0 mgKOH/g: 20 parts by mass It is to be noted that the hydroxyl value is at a solid content of 100%. It is a value.

[Example 2]
In the resin composition A for forming a heat seal layer, a hard coat with a base film was prepared in the same manner as in Example 1 except that the compounding ratio of the acrylic resin A and the vinyl chloride-vinyl acetate copolymer A was 10:4. A coat laminate was obtained.

[Example 3]
In the resin composition A for forming a heat seal layer, a hard coat with a base film was prepared in the same manner as in Example 1 except that the compounding ratio of the acrylic resin A and the vinyl chloride-vinyl acetate copolymer A was 10:10. A coat laminate was obtained.

[Example 4]
A hard coat laminate with a substrate film was obtained in the same manner as in Example 1 except that the heat seal layer-forming resin composition B shown below was used. The hydroxyl value of the resin obtained by combining the vinyl chloride-vinyl acetate copolymer A and the vinyl chloride-vinyl acetate copolymer B in Example 4 is 45 mgKOH/g.

[Resin Composition B for Forming Heat Seal Layer]
Acrylic resin A; glass transition temperature Tg 100° C., molecular weight 100,000:100 parts by mass With respect to 100 parts by mass of the acrylic resin fat A (solid content 20%),
Vinyl chloride-vinyl acetate copolymer A ("Solvine CH" manufactured by Nisshin Chemical Industry Co., Ltd.), glass transition temperature Tg 73°C, hydroxyl value 0 mgKOH/g: 30 parts by mass-vinyl chloride-vinyl acetate copolymer B; glass transition Temperature Tg 65° C., hydroxyl value 60.5 mg KOH/g (“Solvine TA3” manufactured by Nisshin Chemical Industry Co., Ltd.): 10 parts by mass It is to be noted that the hydroxyl value is a value when the solid content is 100%.

[Comparative Example 1]
A hard coat laminate with a substrate film was obtained in the same manner as in Example 1 except that the vinyl chloride-vinyl acetate copolymer A was not blended in the heat seal layer forming resin composition A.

[Comparative example 2]
A hard coat laminate with a substrate film was obtained in the same manner as in Example 1 except that the resin composition C for forming a heat seal layer shown below was used. In addition, the compounding ratio of the acrylic resin A and the vinyl chloride-vinyl acetate copolymer B in Comparative Example 2 is 10:2.

[Resin Composition C for Forming Heat Seal Layer]
Acrylic resin A; glass transition temperature Tg 100° C., molecular weight 100,000:100 parts by mass With respect to 100 parts by mass of the acrylic resin fat A (solid content 20%),
-Vinyl chloride-vinyl acetate copolymer B; glass transition temperature Tg of 65°C, hydroxyl value of 60.5 mgKOH/g ("Solvine TA3" manufactured by Nisshin Chemical Industry Co., Ltd.): 20 parts by mass. It is a value at% hour.

[Comparative Example 3]
In the heat seal layer forming resin composition C, a hard coat with a base film was prepared in the same manner as in Comparative Example 2 except that the compounding ratio of the acrylic resin A and the vinyl chloride-vinyl acetate copolymer B was 10:4. A coat laminate was obtained.

[Comparative Example 4]
A hard coat laminate with a substrate film was obtained in the same manner as in Example 1 except that the resin composition D for forming a heat seal layer shown below was used.
[Resin Composition D for Forming Heat Seal Layer]
Acrylic resin B; glass transition temperature Tg 65° C., molecular weight 230000:100 parts by mass

About the hard coat laminated body with a substrate film obtained in Examples 1 to 3 and Comparative Examples 1 to 4, the substrate film was peeled off, and the following composite test and hot water test were performed. The results are shown in Table 1.

[Compound test]
Using an eye super UV tester manufactured by Iwasaki Electric Co., Ltd., the following three deterioration cycles of L mode, R mode, and D mode were set as one cycle for 12 hours, and a test was performed under the condition of repeating this cycle.
1. L mode (light irradiation mode) 4 hours Black panel temperature 63° C., humidity 70% RH, illuminance 90 mW/cm ²
2. R mode (condensation mode) 4 hours Black panel temperature 70°C, humidity 90%RH
3. D mode (pause mode) 4 hours Uncontrolled leaving: Black panel temperature 30°C or higher, humidity 95%RH or higher, rainfall 15 seconds/1 hour

Under the above conditions, the occurrence of cracks and the color difference ΔE were evaluated. The evaluation criteria are as follows.
(Evaluation criteria for crack occurrence)
◯: No change in appearance was confirmed Δ: Generation of cracks was confirmed ×: Generation of cracks was confirmed, change in appearance was large

(Evaluation criteria for color difference ΔE)
As for the color difference (ΔE ^* ab), the value of SCI (diffuse reflected light+regular reflected light) was read according to JIS Z8792, 8730.
◯: Color difference (ΔE ^* ab) is 2.8 or less Δ: Color difference (ΔE ^* ab) is more than 2.8 and 4 or less

[Hot water immersion test]
It was immersed in warm water at 80° C. for 1000 hours, and the change in appearance was observed. The evaluation criteria are as follows.
(Evaluation criteria for hot water immersion test)
◯: No change in appearance was confirmed. Δ: Change in appearance was confirmed. x: Change in appearance such as white turbidity, peeling and wrinkles was large.

As is clear from the results of Table 1, the heat-sealing layer includes an acrylic resin A having a glass transition temperature of 100° C. or higher and a vinyl chloride-vinyl acetate copolymer A having a hydroxyl value of 50 mgKOH/g or lower. In the hard coat laminates of Examples 1 to 4, cracks did not occur in the heat seal layer, there was no change in appearance in the hot water test, and excellent weather resistance was exhibited even in a severe high temperature and high humidity environment. It was In particular, Examples 1, 2, and 4 in which the compounding ratio (X)/(Y) of the acrylic resin A and the vinyl chloride-vinyl acetate copolymer A were 2.5 and 5.0, yellowed even in the composite test. Was not observed, showing particularly excellent weather resistance. In Example 3, the compounding ratio (X)/(Y) is as small as 1.0 (the compounding amount of the vinyl chloride-vinyl acetate copolymer A is large). In Example 3, the vinyl chloride-vinyl acetate copolymer deteriorates. Some yellowing was seen.

On the other hand, Comparative Example 1 having a heat-sealing layer made of acrylic resin A only, Comparative Examples 2 and 3 containing a vinyl chloride-vinyl acetate copolymer B having a large hydroxyl value of 60.5 mgKOH/g, and a glass transition temperature. In the hard coat laminate of Comparative Example 4 consisting only of acrylic resin B having a temperature of 70° C., cracks were generated in the composite test, and the appearance was greatly changed due to the occurrence of white turbidity, peeling, wrinkles and the like even in the hot water test. ..

The loss tangent tan δ of the acrylic resin A was measured by a dynamic viscoelasticity measuring device (DMA) in a dry and high-humidity atmosphere. The results are shown in FIG. As can be seen from the results of FIG. 3, with the acrylic resin A alone (Comparative Example 1), the loss tangent tan δ changes greatly in a high-humidity atmosphere, and since the resin hardness changes greatly due to moisture absorption, stress tends to accumulate. It can be seen that cracks are likely to occur.

1 Hard Coat Laminate 10 Transfer Hard Coat Film 11 Base Film 12 Hard Coat Layer 13 Primer Layer 14 Heat Seal Layer 15 Transfer Layer 20 Resin Substrate

Claims (9)

On the base film, at least a hard coat layer, a primer layer and a heat seal layer are arranged in this order,
The heat-sealing layer is a transfer hard coat film containing an acrylic resin having a glass transition temperature of 80° C. or higher and a vinyl chloride-vinyl acetate copolymer having a hydroxyl value of 50 mgKOH/g or lower. The heat-sealing layer has an acrylic resin (X), a vinyl chloride-vinyl acetate copolymer (Y), and a compounding ratio of (X)/(Y) by mass ratio of 1.25 or more. The hard coat film for transfer according to claim 1, which is 10 or less. The hard coat film for transfer according to claim 1 or 2, wherein the glass transition temperature of the vinyl chloride-vinyl acetate copolymer is lower than 80°C. On the resin substrate, at least a heat seal layer, a primer layer and a hard coat layer are arranged in this order,
The heat-sealing layer is a hard coat laminate comprising an acrylic resin having a glass transition temperature of 80° C. or higher and a vinyl chloride-vinyl acetate copolymer having a hydroxyl value of 50 mgKOH/g or lower. The heat-sealing layer has an acrylic resin (X), a vinyl chloride-vinyl acetate copolymer (Y), and a compounding ratio of (X)/(Y) by mass ratio of 1.25 or more. The hard coat laminate according to claim 4, which is 10 or less. The hard coat laminate according to claim 4 or 5, wherein the vinyl chloride-vinyl acetate copolymer has a glass transition temperature of lower than 80°C. A method for producing a hard coat laminate, which comprises: laminating the transfer hard coat film according to any one of claims 1 to 3 such that the heat seal layer is in contact with a resin substrate, and then peeling the base film. The method for producing a hard coat body according to claim 7, wherein after the hard coat film for transfer according to any one of claims 1 to 3 is attached to a resin substrate that has been molded in advance, the base film is peeled off. .. The method for producing a hard coat body according to claim 7, wherein a resin is injected onto the transfer hard coat film according to any one of claims 1 to 3 to integrate the resin, and then the base film is peeled off. ..

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