JPH05246198A - Forming method for transfer layer to molded - Google Patents

Abstract

PURPOSE:To form a transfer layer having high quality characteristics by forming an auxiliary adhesive layer composed of a thermoplastic resin coating layer on the adhesive layer on a non-tacky fixed layer and bringing the surface of the transfer layer of a transfer sheet into contact with the surface of the auxiliary adhesive layer to press the same under heating. CONSTITUTION:A coating layer of a thermosetting resin (e.g. melamine resin) is formed on the surface of a transfer object and made dry to the touch to obtain an uncured non-tacky fixed layer. An auxiliary adhesive layer composed of a thermoplastic resin (e.g. polyvinyl chloride) is formed on the surface of said fixed layer. The surface of the transfer layer of a transfer sheet is brought into contact with the surface of the auxiliary adhesive layer composed of a thermoplastic resin and the superposed body of the transfer object and the transfer sheet is pressed under heating and the base material of the transfer sheet is released. As a result, the transfer layer not generating a crack, distortion or deformation strongly bonded to the adhesive layer can be formed using a general-purpose transfer sheet.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a transfer layer on the transfer surface of various molded articles.

[0002]

2. Description of the Related Art As a method for forming a transfer layer on a transfer surface of a molded body, (1) after forming a coating layer of a thermoplastic resin on the transfer surface of the transfer body, the transfer layer is formed on the coating layer surface. (2) forming a coating layer of a thermosetting resin on the transfer surface of the transfer target, heat curing the same, and then applying a transfer sheet having an adhesive layer of the thermosetting resin. A method of transferring to the surface of the previously cured thermosetting resin layer by utilizing (3) applying a solvent-based two-component curable resin to the transfer surface of the transferred material and then drying the solvent in the coating layer. To form an adhesive coating layer,
A method of transferring to the surface of the coating layer is generally used.

[0003]

By the way, in the above-mentioned method for forming a transfer layer on the transfer surface of the molded body,
The method of forming a transfer layer on the transfer surface of the item (1) is insufficient in the adhesion between the transfer layer and the transfer target, and the adhesive layer of the thermosetting resin of the item (2) is used. The method of using the transfer sheet including the transfer sheet has poor storage stability of the transfer sheet including the adhesive layer made of a thermosetting resin, and has a drawback in terms of workability of the transfer sheet. Further, the one using the coating layer of the solvent-based two-component curable resin in the item (3) has a drawback that it is troublesome to control the degree of curing of the coating layer of the solvent-based two-component curing type resin.

On the other hand, when the transfer layer of the transfer sheet is transferred to the adhesive layer of the thermosetting resin formed on the transfer surface of the transfer member, the thermosetting resin causes the transfer layer to move. The adhesive layer does not flow or deform, so that the transfer layer is free from cracks, distortions, deformations, and the like, and moreover, a strong adhesion is obtained between the transfer layer and the adhesive layer. As a method of forming a transfer layer on a molded body having characteristics such as the formation of force, the present inventors have (4) a thermosetting resin for a transferred surface of a molded body used as a transferred body. After the coating layer is formed, the coating layer is dried by touch to form an uncured non-adhesive fixing layer, and a transfer sheet base material is formed on the uncured non-adhesive fixing layer surface. The transfer layer surface of the transfer sheet including the transfer layer is brought into contact with the transfer sheet and the transfer sheet. The transfer layer is transferred to the non-adhesive fixing layer at the same time as the non-adhesive fixing layer is cured by heating and pressurizing the laminated body with the sheet, and then the transfer sheet substrate is peeled off or By heating and pressurizing the superposed body of the transfer body and the transfer sheet, the transfer layer is transferred to the non-adhesive fixed layer, and then the transfer sheet base material is peeled off, and further, the heat formed on the transferred body is transferred. An attempt was made on a method for forming a transfer layer which comprises thermosetting a non-adhesive fixed layer of a curable resin.

However, in the method for forming a transfer layer of the above item (4), it is sufficient to withstand the heating at the time of completely curing the non-sticky fixing layer after transferring the transfer layer to the non-sticking fixing layer. It has been clarified that the transfer layer itself must have heat resistance, and a transfer sheet having versatility cannot be used.

The method for forming the transfer layer on the molded article of the present invention is as follows:
It is necessary to use a transfer sheet having special heat resistance by forming an auxiliary adhesive layer composed of a thermoplastic resin coating layer on an adhesive layer mainly composed of a non-adhesive fixing layer. None, that is, even when a very ordinary transfer sheet is used, when the transfer layer in the transfer sheet is transferred to the adhesive layer made of the thermosetting resin formed on the transfer surface of the transfer target, The thermosetting resin does not cause the adhesive layer of the thermosetting resin to flow or deform,
Therefore, there is provided a method for forming a transfer layer, which can obtain a transfer layer free from cracks, distortions, deformations, and the like, and can obtain a strong adhesive force between the transfer layer and the adhesive layer.

[0007]

According to a first aspect of the present invention, there is provided a method for forming a transfer layer on a molded body, which comprises forming a coating layer of a thermosetting resin on a transferred surface of a molded body used as a transferred body. And a second step of obtaining an uncured non-adhesive fixing layer by touch-drying the coating layer, and forming a thermoplastic resin coating layer on the surface of the non-adhesive fixing layer The third step to do,
A fourth step of bringing the transfer layer surface of the transfer sheet consisting of the transfer sheet base material and the transfer layer into contact with the coating layer surface of the thermoplastic resin, and heating the superposed body of the transfer target and the transfer sheet, By applying pressure, the transfer layer is transferred onto the surface of the thermoplastic resin coating layer, and at the same time, the non-adhesive fixing layer is cured, and then the transfer sheet substrate is peeled off, or the transfer target and the transfer sheet are transferred. Heating the superposed body with
After the transfer layer is transferred to the coating layer surface of the thermoplastic resin by applying pressure, the transfer sheet base material is peeled off, and the non-adhesive fixing layer is heat-cured in a fifth step. A transfer layer is formed on the transfer surface.

The method of forming a transfer layer on a molded article according to the second aspect of the present invention covers the entire transfer layer surface of the molded article having the transfer layer obtained by the first aspect of the invention with the transfer layer. Thus, by the first step of forming a transparent thermosetting resin coating layer and the second step of forming a protective layer by thermosetting this, the transfer layer and the protective layer are protected on the transfer surface of the molded body. And forming a layer.

The method for forming a transfer layer on a molded article according to the third aspect of the present invention is the first step of forming a coating layer of a thermosetting resin on the transferred surface of a molded body used as a transferred body. And a second step of obtaining an uncured non-adhesive fixing layer by touch-drying the coating layer, and a third step of forming a thermoplastic resin coating layer on the surface of the non-adhesive fixing layer. And a fourth step of bringing the transfer layer surface of the transfer sheet consisting of the transfer sheet base material and the transfer layer into contact with the non-adhesive fixing layer surface, and heating the superposed body of the transfer target and the transfer sheet, After transferring the transfer layer to the coating layer surface of the thermoplastic resin by applying pressure, the fifth step of peeling the transfer sheet base material, and the entire transfer layer surface transferred to the coating layer surface of the thermoplastic resin A sixth step of forming a transparent thermosetting resin coating layer so as to cover it; A non-adhesive fixed layer of thermosetting resin formed on the transfer-receiving member and a transparent thermosetting resin coating layer formed so as to cover the entire transfer layer surface are simultaneously cured by heating. And the step of forming a transfer layer and a protective layer on the transfer surface of the molded body.

In the method for forming a transfer layer on a molded body according to the present invention having the above-mentioned structure, examples of the molded body used as the transferred body include a single material of wood, a wood-based composite material, a particle board, and a medium-density fiberboard. Such as wood moldings, gypsum, gypsum-based moldings such as gypsum slag, calcium silicate, calcium silicate-based moldings such as asbestos slate, lightweight foam concrete,
Hollow extrusion cement, pulp cement, asbestos cement,
Cement moldings such as wood chip cement, glass fiber reinforced concrete and fiber cement moldings, ceramics moldings such as pottery, porcelain, earthenware, glass, enamel, iron, stainless steel,
Galvanized steel, polyvinyl chloride sol coated steel, stainless steel, aluminum, titanium, copper, metal moldings, polyethylene, polypropylene, methyl polymethacrylate, methyl polyacrylate, ethyl polymethacrylate, polyvinyl chloride, Thermoplastic resin moldings such as polystyrene, acrylonitrile-butadiene-styrene copolymer, polycarbonate, etc. Thermosetting resin moldings such as phenol resin, urea resin, unsaturated polyester resin, polyurethane resin, epoxy resin, melamine resin, glass fiber A so-called non-woven fabric, cloth, paper or other various fibrous base materials impregnated and cured with a resin such as phenol resin, urea resin, unsaturated polyester resin, polyurethane resin, epoxy resin, melamine resin or diallyl phthalate resin. FRP molded body, 2 Composite molded products obtained by laminating molded products such as the above plates using an adhesive or a heat fusion method are used, and three-dimensional molded products such as foil-shaped to thick sheet-shaped products, rod-shaped products, and injection-molded products are obtained. used. Particularly, a molded body of aluminum is suitable.

The coating layer of the thermosetting resin formed on the transfer surface of the molded body is usually formed as a coating layer of the solvent liquid of the thermosetting resin. Melamine resin, diallyl phthalate resin, phenol resin, urea resin, guanamine resin, unsaturated polyester resin, polyurethane resin, epoxy resin, thermosetting acrylic resin, which has a sufficient degree of polymerization to allow tactile drying. Resins, aminoalkyd resins, melamine / urea copolymer resins, silicone resins, polysiloxane resins, and other thermosetting resins, solvents, and additives that are added as necessary, such as crosslinking agents and polymerization initiators. It is formed by a coating agent composed of a mixture with a curing agent, a polymerization accelerator, a viscosity modifier and the like. The solvent used for this coating agent is appropriately selected according to the type of thermosetting resin used, and examples thereof include esters such as ethyl acetate and butyl acetate, acetone, methyl ethyl ketone, and methyl isobutyl ketone. , Ketones such as cyclohexanone and isophorone, pentane, hexane, heptane,
In addition, mixtures of these, such as gasoline, mineral spirits, aliphatic hydrocarbons such as petroleum benzine, benzene,
Aromatic hydrocarbons such as toluene, xylene and cyclohexane, halogenated hydrocarbons such as trichloroethylene, perchlorethylene and carbon tetrachloride, monohydric alcohols such as methyl alcohol, ethyl alcohol, isopropyl alcohol and butyl alcohol, ethylene glycol, Polyhydric alcohols such as glycerin, ethers such as ethyl ether and methyl ether, and a mixture of two or more of these are used.

In particular, the thermosetting resin coating layer formed on the surface to be transferred includes (1) thermoplastic acrylic resin, polyvinyl chloride resin, vinyl chloride / vinyl acetate copolymer resin, polystyrene resin, The thermosetting resin 10 to 5 is added to 100 parts by weight of a thermoplastic resin such as a cellulosic resin.
(2) A resin in which an extender pigment such as calcium carbonate, barium sulfate, silica, or talc is added to the thermosetting resin to reduce the tackiness when uncured, 3) It is preferable to use a resin mixture of the above (1) and (2).

The thermoplastic resin coating layer formed on the surface of the non-adhesive fixing layer is, for example, a cellulose derivative such as ethyl cellulose, cellulose nitrate, ethyl hydroxyethyl cellulose, cellulose acetate propionate, cellulose acetate, polystyrene, poly- Styrene resins such as α-methylstyrene and styrene copolymer resins, homopolymers or copolymer resins of acrylic or methacrylic acid esters such as polymethylmethacrylate, polyethylmethacrylate, ethylpolyacrylate, polyacrylbutyl, polychlorinated Vinyl, polyvinyl acetate, vinyl chloride-vinyl acetate copolymer, vinyl polymers such as polyvinyl butyral resin, rosin, rosin-modified maleic acid resin, rosin-modified phenol resin, rosin ester resin such as polymerized rosin, coumarone resin, vinyl Toluene resin, a polyurethane, formed by other resins such as polyamide resins. The thermoplastic resin coating layer is usually formed by roll coating, curtain flow coating, wire bar coating, reverse coating, gravure coating, gravure reverse coating, air knife coating, kiss coating, blade coating, smooth coating, comma coating, etc. It is formed to have a thickness of about 1 to 10 μm.

The transfer sheet used in the method for forming a transfer layer on a molded article of the present invention comprises a transfer sheet base material and a transfer layer, and has a releasable surface. It comprises a sheet base material and a transfer layer formed on the releasable surface of the transfer sheet base material. The releasable surface of the transfer sheet substrate is, for example, when the surface is a plastic sheet having releasability, the sheet can be used as it is as a transfer sheet substrate. A treated surface is used which has a releasable surface by being treated with a fluororesin or silicone.

After the coating layer of the thermosetting resin formed prior to the formation of the thermoplastic resin layer is completely cured on the transfer surface of the molded body, the transfer sheet base material and the transfer layer are formed. In order to ensure that the mold release between the two, it is possible to form a surface protective layer on the transfer layer transferred to the transfer surface of the molded body, on the surface of the transfer sheet substrate, It is preferable to form and place a release layer having excellent properties such as scratch resistance, chemical resistance, and stain resistance.

In particular, the molded article having the transfer layer obtained by the method of the present invention has heat resistance and water resistance, such as a window peripheral material for exteriors, interiors such as bathrooms, blinds and the like. When it is used for an application that needs to be combined, it is preferable to preliminarily form a release layer made of a resin having a glass transition point of 60 ° C. or higher. It is preferable to prevent peeling of the transfer layer and occurrence of blister due to sunlight or the like.

The release layer formed on the surface of the transfer sheet substrate is usually made of a thermosetting resin or an ionizing radiation curable resin as described below and has a thickness of about 0.1 to 10 μm. It is preferably formed.

Thermosetting resin Melamine resin, diallyl phthalate resin, phenol resin, urea resin, guanamine resin, unsaturated polyester resin, polyurethane resin, epoxy resin, aminoalkyd resin, melamine / urea copolymer resin, silicon resin, polysiloxane Resin etc. In addition, the thermosetting resin may include a crosslinking agent, a polymerization initiator, a curing agent, a polymerization accelerator, a solvent,
A viscosity modifier, extender pigment, etc. are added.

Ionizing Radiation Curable Resin A mixed resin composition of a prepolymer, an oligomer, and / or a monomer having a polymerizable unsaturated bond or an epoxy group in the molecule is used.

Specific examples of the prepolymers and oligomers include unsaturated polyesters such as condensation products of unsaturated dicarboxylic acids and polyhydric alcohols, polyester methacrylates, polyether methacrylates, polyol methacrylates, and melamine methacrylates. Acrylates such as methacrylates, polyester acrylates, epoxy acrylates, urethane acrylates, polyether acrylates, polyol acrylates, and melamine acrylates are used.

Further, specific examples of the monomer include styrene and α
・ Styrene monomers such as methylstyrene, methyl acrylate, 2-ethylhexyl acrylate, methoxyethyl acrylate, butoxyethyl acrylate, butyl acrylate, methoxybutyl acrylate, acrylates such as phenyl acrylate , Methacrylic acid esters such as methyl methacrylate, ethyl methacrylate, propyl methacrylate, methoxyethyl methacrylate, ethoxymethyl methacrylate, phenyl methacrylate, 2- (N, N-diethylamino) ethyl acrylate, methacrylic acid- 2- (N, N-Dimethylamino) ethyl, 2- (N, N-Dibenzylamino) ethyl acrylate, 2- (N, N-Dimethylamino) methyl methacrylate, 2- (N , N-Diethylamino) propyl, etc. Unsaturated carboxylic acid amides with amino alcohol esters, acrylamide, methacrylamide, etc., ethylene glycol diacrylate, propylene glycol diacrylate, neopentyl glycol diacrylate, 1,6-hexanediol diacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate Diacrylate compounds such as acrylate, polyfunctional compounds such as dipropylene glycol diacrylate, ethylene glycol acrylate, propylene glycol dimethacrylate, diethylene glycol dimethacrylate, trimethylolpropane trithioglycolate, trimethylolpropane trithiopropylate, pentaerythritol Two or more thioes in the molecule, such as tetrathioglycol And a polythiol compound having a vinyl group.

The ionizing radiation curable resin is usually
5 to 95% by weight of the above prepolymer or oligomer
And a mixed composition of 95 to 5% by weight of the monomer and / or polythiol compound is utilized.

Further, when the peeling layer is formed of an ionizing radiation-curable resin and the peeling layer is cured by irradiation with ultraviolet rays, for example, acetophenones, benzophenones, Michler benzoylbenzoate, α.
A photopolymerization initiator such as amyloxime ester, tetramethylmeuram monosulfide, thioxanthone,
Needless to say, a coating agent containing a photosensitizer added as necessary, for example, a photosensitizer based on n-butylamine, triethylamine, tri-n-butylphosphine, or the like is used.

The transfer layer formed on the releasable surface of the transfer sheet base material has at least a decorative layer, and if necessary, the above-mentioned release layer or an adhesive formed on the decorative layer. A transfer layer having a laminated structure such as an agent layer is used.

The decorative layer is composed of a printing layer made of printing ink, a metal film layer made of aluminum, chrome, etc., and may be a solid decorative layer on the entire surface, or may have wood grain, stone grain, polka dots, lattice pattern, letters. , A partial pattern layer expressing a figure or the like, or a combination of a solid decorative layer on the entire surface and a partial pattern layer. The printing layer formed of the printing ink is preferably formed of a printing ink containing a resin having a glass transition temperature of 60 ° C. or higher as a vehicle for the purpose of providing the decorative layer with hot water resistance and heat resistance.

The adhesive layer, which is the uppermost layer of the transfer layer formed on the transfer sheet substrate, is formed as necessary, like the above-mentioned release agent layer, and is, for example, a decorative layer. Since the thermoplastic resin is contained in, when the decorative layer has a heat welding performance, the adhesive layer is not necessarily required, but as in the case where the decorative layer is a metal vapor deposition layer, The adhesive layer is indispensable when the decorative layer itself does not have the heat welding performance.

This adhesive layer in the transfer sheet contains
A heat sensitive adhesive, a solvent activated adhesive, an ionizing radiation curable adhesive or the like is used, and those described below are used.

Cellulose derivatives such as ethyl cellulose, cellulose nitrate, ethyl hydroxyethyl cellulose, cellulose acetate propionate and cellulose acetate, polystyrene, styrene resins such as poly-α-methylstyrene and styrene copolymer resins, polymethylmethacrylate, polymethyl methacrylate. Acrylic resin such as acryl such as ethyl methacrylate, polyethyl acrylate, polyacryl butyl, polyvinyl chloride, polyvinyl acetate, vinyl chloride-vinyl acetate copolymer, vinyl polymer such as polyvinyl butyral resin, rosin, rosin Modified maleic acid resin, rosin-modified phenolic resin, rosin ester resin such as polymerized rosin, polyisoprene rubber, polyisobutyl rubber, styrene-butadiene rubber, rubber-based resin with butadiene-acrylonitrile rubber, Malonic resin, vinyl toluene resin, polyurethane, polyamide resins, polychlorinated olefins, other resins such as various ionomers, furthermore,
A mixture of these,

The adhesive layer is preferably formed of a resin having a glass transition temperature of 90 ° C. or higher for the purpose of imparting warm water resistance and heat resistance to the transfer layer formed on the transferred material.

In each of the present invention, a thermosetting resin coating layer is formed on the surface to be transferred of a molded article to be used as a transfer target, and then the coating layer is dried by touch to obtain uncured. The step of forming the non-adhesive fixed layer in the state is to make the surface of the coating layer dry by touch by volatilizing a part or all of the solvent in the coating layer. It is necessary to prevent the thermosetting resin used in the coating layer from completely curing.

That is, in the drying step after forming the coating layer of the thermosetting resin on the transfer surface of the molded body,
The coating layer is in a dry-to-touch state due to volatilization of residual solvent components in the coating layer, and the fluidity and surface tackiness of the coating layer are eliminated, but the resin in the coating layer is It is preferable to leave or heat-dry the resin so that at least it does not reach full curing and retains thermoplasticity. Then, a thermoplastic resin coating layer is formed on the entire surface of the thermosetting resin coating layer surface in this state.

Further, in the step of transferring the transfer layer to the non-adhesive fixing layer via the coating layer of the thermoplastic resin by heating and pressurizing the superposed body of the transferred material and the transfer sheet, for example, Thermal roller transfer, vacuum press transfer, etc. are used.

In the second and third aspects of the invention, the protective layer covering the entire transfer layer surface is formed of a transparent thermosetting resin. The protective layer is formed by thermosetting. Forming a coating layer of a coating agent of a mold resin and a subsequent heat curing step, for example, a thickness of 1 to 100 μm of a thermosetting resin such as polyurethane resin, epoxy resin, unsaturated polyester resin, polysiloxane resin Is formed as a transparent protective layer.

[0034]

The method of forming a transfer layer on a molded article of the present invention comprises a first step of forming a thermosetting resin coating layer on the transferred surface of a molded article used as a transferred article, and the coating step. A second non-adhesive fixing layer in an uncured state by touch-drying the layer;
A step of forming a coating layer of a thermoplastic resin on the surface of the non-adhesive fixing layer, and a transfer layer surface of a transfer sheet comprising a transfer sheet base material and a transfer layer, the non-adhesive fixing layer surface And a fourth step of contacting with the transfer sheet and a stack of the transfer sheet and the transfer sheet are heated and pressed to transfer the transfer layer to the non-adhesive fixing layer and simultaneously cure the non-adhesive fixing layer, Then, the transfer sheet base material is peeled off or the transfer layer is transferred to the non-adhesive fixed layer by heating and pressurizing the superposed body of the transfer target and the transfer sheet, and then the transfer sheet base is transferred. Peel the material, then
The fifth step of heat-curing the non-adhesive fixing layer of thermosetting resin formed on the transfer-receiving body forms a transfer layer on the transfer-receiving surface of the molded body.

Therefore, in the method for forming a transfer layer on a molded article according to the present invention, the transfer sheet is transferred to an uncured thermosetting resin coating layer having adhesiveness and fluidity. Since the layer is not transferred, the thermosetting resin coating layer, which is the main component of the adhesive layer, does not flow or deform due to the pressure applied during the transfer step of the transfer layer. It is possible to obtain a transfer layer having a good quality without cracks, distortions, deformations or the like occurring in the transferred transfer layer or unevenness on the surface of the transfer layer to be formed.

Further, in the method of forming the transfer layer on the molded article of the present invention, the state before the coating layer of the thermosetting resin is completely cured is used as the main body of the adhesive layer. Since the adhesive layer is sufficiently provided with chemical reactivity, heat-welding property, etc., a good adhesive force is formed between the transferred body and the transfer layer.

Further, in the method for forming a transfer layer on a molded article of the present invention, an auxiliary adhesive comprising a coating layer of a thermoplastic resin on the surface of a coating layer of a thermosetting resin which is the main component of the adhesive layer. Since the layer is formed, the transfer layer in the transfer sheet has heat resistance sufficient to withstand heating when completely curing the non-adhesive fixing layer that is the main component of the adhesive layer. There is no need, and a versatile transfer sheet can be used.

[0038]

EXAMPLES The specific constitution of the method for forming a transfer layer on a molded article of the present invention will be described below with reference to examples.

Example 1 (1) Preparation of Transfer Sheet A transfer sheet base made of a polyethylene terephthalate film “Toray Co., Ltd .: T-60” having a thickness of 25 μ was formed on the surface of an acrylic resin with a thickness of 2 μ. A release agent layer is formed, and a thickness of 2 is formed on the surface of the release agent layer with a coloring ink in which a pigment is added to a vehicle of acrylic resin and salt / vinyl acetate resin.
After a μ pattern pattern layer and a 2 μm-thick underprinting layer / adhesive layer by colored solid printing with an acrylic resin mixed with a pigment were sequentially formed by a gravure coating method,
The transfer sheet was heated and dried at 60 ° C. for 1 minute to obtain a transfer sheet having no tackiness on the surface.

(2) Preparation of Transferred Material On the surface of an aluminum plate “Showa Aluminum Co., Ltd.” having a width of 25 mm, a length of 30 cm and a thickness of 0.15 mm, an epoxy resin primer [the. Inktech Co., Ltd .: Primer A] is applied by a roll coating method and heated at 200 ° C. for 30 seconds to form a semi-cured primer layer having a thickness of 20 μm.
That is, after forming a primer layer that is not tacky even if the surface of the coating layer is touched with a finger, a thermoplastic acrylic primer [the. Inktech Co., Ltd .: Primer B] is also applied by the roll coating method, and then dried by heating at 200 ° C. for 30 seconds to form a primer layer made of a thermoplastic resin having a thickness of 5 μ. An aluminum plate, which is a transfer-receiving body, having an uncured non-adhesive fixing layer and a coating layer of a thermoplastic resin formed on the surface by touch drying was obtained.

(3) Transfer step A state in which the coating layer of the thermoplastic resin on the transferred material and the underprinting layer / adhesive layer surface of the transfer sheet are brought into contact with each other and a pressure of 50 kg is applied, a speed of 3 m / min Then, it was subjected to a heating / pressurizing step of passing under heating at 200 ° C.

(4) Peeling Step of Transfer Sheet Base Material Next, the transfer sheet base material (polyethylene terephthalate film) in the transfer sheet is peeled off to form an underprinting layer / adhesive layer and a grid pattern by colored solid printing. Was transferred to the surface of the coating layer of the thermosetting resin of the transferred material.

(5) Curing Step After that, an aluminum plate on which the underprinting layer / adhesive layer and the grid pattern pattern layer by colored solid printing are transferred is heated at 150 ° C. for 20 minutes. Then, the non-adhesive fixing layer of the thermosetting resin formed on the transferred material was completely thermoset to obtain a molded article having the target transfer layer.

Comparative Example 1 (1) Preparation of Transfer Sheet A transfer sheet having the same structure as the transfer sheet used in Example 1 was prepared.

(2) Preparation of Transferred Material On the surface of an aluminum plate "Showa Aluminum Co., Ltd." having a width of 25 mm, a length of 30 cm and a thickness of 0.15 mm, an epoxy resin primer [the. Inktech Co., Ltd .: Primer A] is applied by a roll coating method, and a fully cured primer layer having a thickness of 20 μm is formed by heating at 200 ° C. for 1 minute, thereby being completely cured. A transfer target made of an aluminum plate having a resin coating layer formed on the transfer target surface was obtained.

(3) Transfer Process By the transfer process which is the same as the transfer process of Example 1, the surface of the transfer layer to be coated with the thermosetting resin and the surface of the transfer sheet underprinting layer / adhesive layer are brought into contact with each other. The transfer layer was transferred to the transfer target in the state of being applied.

(4) Peeling step of transfer sheet base material Next, the transfer sheet base material (polyethylene terephthalate film) in the transfer sheet is peeled off, and an underprinting layer / adhesive layer and a grid pattern by colored solid printing are used. A molded body having a transfer layer for comparison in which the layer and the layer were transferred to the surface of the thermosetting resin coating layer of the transferred body was obtained.

A transfer comprising contacting the adhesive layer surface of the cellophane adhesive tape with the transfer layer surface of the molded article having the transfer layer obtained in Example 1 and Example 2 and adhering the same, and then peeling it off. When a layer adhesion test was performed, the adhesion of the transfer layer of the example product was good, but in the comparative example product, peeling occurred at the interface between the primer layer surface and the transfer layer,
A transfer layer having good adhesion was not formed.

[0049]

[Effects] According to the method for forming a transfer layer on a molded body of the present invention, a molded body having a transfer layer having high quality characteristics can be easily and surely obtained by using a commonly used transfer sheet. Therefore, it is highly useful in practical use.

Claims (3)

[Claims] 1. A first step of forming a thermosetting resin coating layer on a transfer surface of a molded body used as a transfer object,
A second step of obtaining an uncured non-adhesive fixing layer by touch-drying the coating layer, and a third step of forming a thermoplastic resin coating layer on the surface of the non-adhesive fixing layer, A fourth step of bringing the transfer layer surface of the transfer sheet consisting of the transfer sheet base material and the transfer layer into contact with the coating layer surface of the thermoplastic resin, and heating the superposed body of the transfer target and the transfer sheet, By applying pressure, the transfer layer is transferred onto the surface of the thermoplastic resin coating layer, and at the same time, the non-adhesive fixing layer is cured, and then the transfer sheet substrate is peeled off, or the transfer target and the transfer sheet are transferred. Heating the superposed body with
After the transfer layer is transferred to the coating layer surface of the thermoplastic resin by applying pressure, the transfer sheet base material is peeled off, and the non-adhesive fixing layer is heat-cured in a fifth step. A method for forming a transfer layer on a molded article, which comprises forming a transfer layer on a transfer surface. 2. A first step of forming a transparent thermosetting resin coating layer on the entire surface of the transfer layer obtained by the method of claim 1 so as to cover the transfer layer, A method for forming a transfer layer on a molded body, comprising forming a transfer layer and a protective layer on a surface to be transferred of the molded body by a second step of forming a protective layer by thermosetting this. 3. A first step of forming a coating layer of a thermosetting resin on a transfer surface of a molded body used as a transfer body, and uncuring by drying the coating layer with a finger. A second step of obtaining a non-adhesive fixing layer in a state, and a third step of forming a coating layer of a thermoplastic resin on the surface of the non-adhesive fixing layer,
Fourth step of bringing the transfer layer surface of the transfer sheet comprising the transfer sheet base material and the transfer layer into contact with the surface of the non-adhesive fixing layer, and heating and pressurizing the superposed body of the transfer target and the transfer sheet Thus, after transferring the transfer layer to the thermoplastic resin coating layer surface, a fifth step of peeling the transfer sheet base material and covering the entire transfer layer surface transferred to the thermoplastic resin coating layer surface Thus, the sixth step of forming a transparent thermosetting resin coating layer, the non-adhesive fixing layer of the thermosetting resin formed on the transfer target, and the entire transfer layer surface are covered. By the seventh step of simultaneously curing the formed transparent thermosetting resin coating layer by heating,
A method for forming a transfer layer on a molded article, which comprises forming a transfer layer and a protective layer on a surface to be transferred of the molded article.