JPH11208193A - Transfer sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of defects on a transfer layer by improving the release properties of a base sheet of release properties in a transfer process even in the case of forming the recessed and projected shape on a mold release layer by forming the mold release layer of a resin containing a reactive silicone and forming the release layer of a thermosetting resin or ionized radiation cure resin. SOLUTION: In a transfer sheet 1 formed of a mold release layer 12, a release layer 13, a pattern layer 14 and a bonding agent layer 15 laminated successively on a base sheet 11 having the recessed and projected shape on its surface, the surface of the mold release layer 12 is so formed as to form the recessed and projected shape by using a resin containing a reactive silicone, and the release layer 13 is formed of a thermosetting resin or ionized radiation cure resin to improve the release properties between the mold release layer 12 and the release layer 13 in a transfer process, and also the surface of superior solvent-resistant properties is formed even in the case the surface of the transfer layer (release layer 13) is of the mat shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer sheet used for the purpose of surface protection and surface decoration of home appliances and furniture / architecture interior materials, interior and exterior materials of vehicles such as automobiles, cosmetic containers, miscellaneous goods and the like.

[0002]

2. Description of the Related Art Conventionally, as a transfer sheet used for such an application, a release layer, a release layer,
One in which a picture layer and an adhesive layer are sequentially formed is used.
As a release layer, in order to improve the separation between the base material sheet and the release layer, a paint obtained by adding a release agent such as a fluorine-based resin or various waxes to an acrylic resin, a cellulose resin, a vinyl resin, or the like. A coating film formed by using is often used.

[0003] The above-mentioned release layer has a releasability from the base material sheet and is formed for the purpose of protecting the surface of the transfer layer after the image is transferred to the transfer-receiving member. A curable resin (a thermosetting resin, an ionizing radiation curable resin, etc.) is selected. When abrasion resistance is required, there is a resin obtained by adding an inorganic filler such as silica or alumina to a thermoplastic resin or a curable resin.

[0004]

When a thermoplastic resin is used for the release layer of the transfer sheet, the release layer becomes the surface of the transfer object after the transfer to the transfer object. When touched, attacked by organic solvents,
There was a problem that the gloss of the surface changed. In particular, when the surface (release layer) is formed in a mat shape, the gloss of the surface changes significantly. When the release layer is matted, if the unevenness is formed on the release layer surface of the base material sheet, the release property of the release layer and the release layer becomes poor, and when the image is transferred to the transfer target, the ink of the pattern layer is released. There is a problem that is taken up by the conductive base sheet. In particular, when a thermosetting resin or an ionizing radiation curable resin having good solvent resistance is used as the resin of the release layer, this phenomenon often appears remarkably. Therefore, even when the release layer on the surface of the transfer-receiving member is matted, a material having excellent solvent resistance has been desired.

[0005]

In order to solve the above problems, the transfer sheet has the following structure. On a base sheet, at least a release layer, in a transfer sheet having a release layer, the release layer is made of a resin containing reactive silicone, and the release layer is made of a thermosetting resin or an ionizing radiation-curable resin. The transfer sheet was a feature. In addition, a transfer sheet is characterized in that the surface of the release layer has fine irregularities.

That is, in the transfer sheet of the present invention, a release layer is formed from a resin composition containing a reactive silicone on a base sheet, and a thermosetting resin as a release layer is formed on the release layer. By forming the layer or the ionizing radiation-curable resin layer, even when the release layer and the release layer have irregularities, the releasability is good in the transfer step, and the transfer layer surface after transfer has an excellent matte feeling. And excellent resistance to organic solvents.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic sectional view showing an example of the transfer sheet of the present invention, and FIG. 2 is a schematic sectional view showing another embodiment of the transfer sheet of the present invention. FIG. 3 is a schematic cross-sectional view when the transfer sheet of the present invention is transferred to an object to be transferred and the peelable substrate sheet is peeled off. As shown in FIG. 1, the transfer sheet of the present invention has a release layer 12
The transfer sheet 1 in which a release layer 13, a pattern layer 14, and an adhesive layer 15 are sequentially laminated, wherein a release layer is formed of a resin containing reactive silicone to improve releasability from the release layer. The release layer is formed by using a thermosetting resin or an ionizing radiation-curable resin, and imparts solvent resistance to the surface of the transfer object when the transfer layer is transferred to the transfer object.

Further, as shown in FIG. 2, a release layer is formed on a substrate sheet having an uneven shape on the surface, thereby forming a fine uneven shape on the release layer 12 and peeling off the uneven shape surface. When a transfer sheet in which the layer 13, the pattern layer 14, and the adhesive layer 15 are sequentially laminated is prepared and the transfer layer is transferred to the transfer object, as shown in FIG. A mat surface of the uneven shape 16 is formed, and the uneven shape 1
Six surfaces are provided with solvent resistance.

As a method of forming fine irregularities on the release layer 12, a method of shaping the irregularities by heating and pressurizing the base sheet 11 using an embossing plate, or a method of forming a matte surface by sandblasting is used. There are methods. Further, in the resin composition forming the release layer, the average particle diameter is 0.1 to 1%.
0 μm silica, inorganic fine particles such as alumina are added,
There is also a method in which a resin composition containing the fine particles is coated on a base material sheet to impart an uneven shape to the release layer.
Fine particles such as silica and alumina are subjected to a surface treatment with a silane coupling agent or the like in order to improve the holding power of the binder resin and the dispersibility.

Hereinafter, a method for producing the transfer sheet of the present invention will be described. First, as shown in FIG. 4A, a biaxially stretched polyethylene terephthalate film (hereinafter referred to as PET)
An uneven shape 16 is formed on one surface of a base sheet 11 such as a film by sandblasting or heating and pressing using an embossing plate. Next, 2 to 30% by weight of a reactive silicone based on a resin such as an alkyd melamine resin is added to the 16 uneven surfaces of the base sheet 11, and this is added to an organic solvent (for example, 1: 1 of methyl ethyl ketone and toluene).
Of the substrate sheet 11 by gravure coating or the like, and coating the dried coating film thickness as shown in FIG. 4B. The release layer 12 is formed so as to have a thickness of 0.1 to 5 μ to prepare the release substrate sheet 2.

Next, as shown in FIG. 4C, the surface of the release layer 12 of the release substrate sheet 2 is coated with a gravure coat or the like using a thermosetting resin or an ionizing radiation-curable resin. Thus, a release layer 13 is formed. The thickness of the release layer is
The dry matter is 1 to 20 μm. Then, FIG.
As shown in (d), a pattern layer 14 is formed on the release layer 13 by gravure printing or the like using a known ink, and a known adhesive is coated on the pattern layer 14 by a gravure coat or the like. Then, an adhesive layer 15 is provided to manufacture the transfer sheet 1.

The obtained transfer sheet is transferred to a transfer object as follows to form a transfer layer having excellent solvent resistance on the surface of the transfer object. As shown in FIG. 5A, the transfer sheet 1 is adhered to the transfer target 17 via an adhesive layer 15.
Next, as shown in FIG. 5B, the release substrate sheet 2 is peeled off from the surface of the release layer 12, and the adhesive layer 15, the picture layer 14, and the release layer 13 are transferred to the transfer target. As shown in FIG. 5C, the surface of the transfer-receiving body after the transfer has an irregular shape 16.
, So it is matte. Furthermore, since the surface composed of the release layer is a cured thermosetting resin or ionizing radiation-curable resin, it exhibits excellent resistance to organic solvents.

As the base sheet used in the present invention, a synthetic resin sheet or film is used. For example, polyester resins such as polyethylene terephthalate, polybutylene terephthalate, polyethylene terephthalate / isophthalate copolymer, and polyolefin resins such as polyethylene, polypropylene and polymethylpentene;
Polyethylene resins such as polyvinyl fluoride, polyvinylidene fluoride, polytetrafluoroethylene, and ethylene tetrafluoroethylene copolymer; polyamides such as nylon 6 and nylon 6.6; polyvinyl chloride;
Vinyl acetate copolymer, ethylene / vinyl acetate copolymer,
Ethylene / vinyl alcohol copolymers, vinyl polymers such as polyvinyl alcohol and vinylon, cellulose resins such as cellulose triacetate and cellophane, polymethyl methacrylate, polyethyl methacrylate, ethyl polyacrylate, and polybutyl acrylate , A single layer or a plurality of layers of a synthetic resin film or sheet such as polystyrene, polycarbonate, polyarylate, and polyimide. In consideration of moldability, heat resistance, printability and the like, biaxially stretched polyethylene terephthalate film (hereinafter referred to as PET film) is most preferable. The thickness of the substrate is used in the range of 5 to 200 μm.
00 μm is preferred. If it is less than 15 μm, the strength of the film may be insufficient, and if it is more than 200 μm, heat transfer may be poor in roll transfer, which may cause poor transfer. In addition, the cost increases.

Further, when the transfer sheet of the present invention is used for transferring to a transfer object, the transfer layer is provided with an uneven shape on the surface of the base sheet so as to adjust the gloss by imparting an uneven shape to the surface of the transfer layer. I have to keep it. As a method of forming the uneven shape on the base sheet, a known method such as a method of shaping the uneven shape by heating and pressing using an embossing plate, a method of forming a mat surface by a sand blast method, and the like can be used.

In the present invention, as the resin forming the release layer, a thermosetting resin such as melamine, silicone, aminoalkyd, urethane, urea, epoxy or the like, or an ionizing radiation-curable resin is used. In order to improve the releasability of the resin, a reactive silicone is added to these resins.
What added about 30% by weight is used. Then, a resin containing a reactive silicone is dissolved in a solvent to prepare a coating liquid, and the coating liquid is used to coat a base sheet by a known method to form a coating having a thickness of 0.1 to 5.0 μm. Form a release layer. By including the reactive silicone in the release layer, even when a resin having excellent solvent resistance among thermosetting resins or ionizing radiation-curable resins is selected as a release layer, when transferring to a transfer-receiving body, The releasability of the release layer and the release layer can be improved.

As the reactive silicone, polysiloxane having a silanol group at a terminal is used as a base polymer, and polymethyl hydrogen siloxane is blended as a crosslinking agent, and condensed silicone is condensed in the presence of an organic tin acylate catalyst. Alternatively, an addition-type silicone obtained by blending a polysiloxane containing a vinyl group with the base polymer and subjecting it to an addition reaction in the presence of a platinum catalyst can be used. Addition-type silicones are suitable for the present invention because they do not generate by-products.

Further, in order to adjust the gloss of the surface of the transfer layer after transfer, silica having an average particle size of 0.1 to 10 μm is added to the release layer.
In some cases, a known matting agent such as alumina is added to form an uneven shape. When a matting agent is added, the thickness of the release layer becomes slightly thicker, depending on the size of the matting agent.
It is formed in the range of ~ 15μ.

The fine particles of the matting agent are subjected to a surface treatment in order to improve the holding power and dispersibility of the binder resin, and the following surface treatment is employed. The compound used in the treatment liquid is, for example, an alkoxysilane having a radical polymerizable unsaturated bond in a molecule (also referred to as a silane coupling agent), for example, γ-methacryloxypropyltrimethoxysilane, γ-methacryloxypropylmethyl Dimethoxysilane, γ-methacryloxypropyldimethylmethoxysilane, γ-methacryloxypropyltriethoxysilane, γ-methacryloxypropyldiethoxysilane, γ-methacryloxypropyldimethylethoxysilane, γ-acryloxypropyltrimethoxysilane, γ- Acryloxypropylmethyldimethoxysilane, γ-acryloxypropyldimethylmethoxysilane, γ-acryloxypropyltriethoxysilane, γ-acryloxypropylmethyldiethoxysilane, γ-acryloxypro Le dimethyl silane, vinyl trimethoxy silane and vinyl triethoxy silane and the like.

The method for treating the silica fine particles or alumina fine particles with the silane coupling agent is not particularly limited, and may be performed according to a known processing method. For example, there are the following dry method and wet method. As a dry method, there is a method of spraying a predetermined silane coupling agent while vigorously stirring silica powder or alumina powder. As a wet method, there is a method in which silica powder or alumina powder is dispersed in a solvent such as toluene, and then a predetermined amount of a silane coupling agent is added to cause a reaction. The wet method is preferable for performing the surface treatment uniformly.

The amount of the silane coupling agent to be applied to the silica powder or the alumina powder is preferably in a range where the minimum coating area of the silane coupling agent is 10 to 100 with respect to the specific surface area of the silica powder or the alumina powder of 100.
When the minimum covering area is 10 or less, there is no processing effect. When the minimum covering area is 100 or more, there is no inconvenience in performance. However, when the minimum covering area is 100 or more, there is no special effect, the cost is high, and the economic burden is increased. Becomes larger. In the above surface treatment, a silane coupling agent has been described, but a titanate coupling agent or an aluminate coupling agent can also be used as another coupling agent.

As the curable resin used for the release layer in the present invention, a thermosetting resin or an ionizing radiation curable resin is used. Examples of the thermosetting resin include a phenol resin, a urea resin, a diallyl phthalate resin, a melamine resin, a guanamine resin, an unsaturated polyester resin, a polyurethane resin, an epoxy resin, an amino alkyd resin, a melamine / urea cocondensation resin, a silicon resin, There are polysiloxane resins and the like, if necessary, a crosslinking agent, a curing agent such as a polymerization initiator, a polymerization accelerator, a solvent, a viscosity modifier,
Add extenders and the like. As the curing agent, isocyanate is usually unsaturated polyester resin or polyurethane resin, amine is epoxy resin, peroxide such as methyl ethyl ketone peroxide, radical initiator such as azobisisobutyronitrile is unsaturated. Often used for polyester resins.

As the isocyanate, a divalent or higher aliphatic or aromatic isocyanate can be used, but an aliphatic isocyanate is desirable from the viewpoint of preventing thermal discoloration and weather resistance.
Specific examples include tolylene diisocyanate, xylene diisocyanate, 4,4-diphenylmethane diisocyanate, hexamethylene diisocyanate, lysine diisocyanate, and the like.

In order to accelerate the curing reaction, heating may be performed after coating, if necessary. For example, in the case of an isocyanate-cured urethane-curable unsaturated polyester-based resin or polyurethane-based resin, it is usually at 40 to 60 ° C. for about 1 to 5 days, and in the case of a polysiloxane resin, it is usually 80 to 150.
C. for about 1 to 300 minutes.

As the ionizing radiation-curable resin, a composition in which a prepolymer, an oligomer and / or a monomer having a polymerizable unsaturated bond or an epoxy group in a molecule is appropriately mixed is used. Examples of the prepolymer and oligomer include unsaturated polyesters such as a condensate of an unsaturated dicarboxylic acid and a polyhydric alcohol, polyester methacrylate,
Examples include methacrylates such as polyether methacrylate, polyol methacrylate, and melamine methacrylate, and acrylates such as polyester acrylate, epoxy acrylate, urethane acrylate, polyether acrylate, polyol acrylate, and melamine acrylate.

Examples of the monomer include styrene, α-
Styrene monomers such as methylstyrene, acrylates such as methyl acrylate, 2-ethylhexyl acrylate, methoxyethyl acrylate, butoxyethyl acrylate, butyl acrylate, methoxybutyl acrylate, phenyl acrylate, Methacrylates such as methyl methacrylate, ethyl methacrylate, propyl methacrylate, methoxyethyl methacrylate, ethoxymethyl methacrylate, phenyl methacrylate, lauryl methacrylate, 2- (N, N-diethylamino) ethyl acrylate, 2- (N, N-dimethylamino) ethyl methacrylate, 2- (N, N-dibenzylamino) ethyl acrylate, (N, N-dimethylamino) methyl methacrylate, 2- (N , N-didiethylamino) propyl Substituted amino alcohol esters of unsaturated acids, acrylamide, unsaturated carboxylic acid amides such as methacrylamide, Echirerifu' fluoride, polyvinylidene fluoride, polytetrafluoroethylene, ethylene -4
Polyfluoroethylene resins such as fluorinated ethylene copolymers, polyamides such as nylon 6, nylon 6.6, compounds such as polyvinyl chloride, vinyl chloride / vinyl acetate cleat, dipropylene glycol diacrylate, ethylene glycol acrylate, Polyfunctional compounds such as propylene glycol dimethacrylate and diethylene glycol dimethacrylate, and / or polythiol compounds having two or more thiol groups in the molecule, for example, trimethylolpropane trithioglycolate, trimethylolpropane trithiopropylate And pentaerythritol tetrathioglycol.

If necessary, one or two of the above compounds may be used.
The prepolymer or oligomer is used in an amount of 5% by weight or more and the monomer and / or polythiol is used in an amount of 9% or more in order to impart ordinary coating suitability to the resin composition.
It is preferable that the content be 5% by weight or less.

In selecting the monomer, if the flexibility of the cured product is required, the amount of the monomer may be reduced within a range that does not impair coating suitability, or a monofunctional or bifunctional acrylate monomer may be used. A structure having a relatively low crosslink density is used. In addition, when the heat resistance, hardness, solvent resistance, etc. of the cured product are required, the amount of the monomer may be increased within a range that does not hinder coating suitability,
It is preferable to use a tri- or more functional acrylate-based monomer to obtain a structure having a high crosslinking density. It is also possible to adjust the coating suitability and the physical properties of the cured product by mixing a monofunctional or difunctional monomer and a trifunctional or higher functional monomer.

Examples of the monofunctional acrylate monomer as described above include 2-hydroxyacrylate, 2-hexyl acrylate, phenoxyethyl acrylate and the like. Examples of the bifunctional acrylate monomer include ethylene glycol diacrylate and 1,6-hexanediol diacrylate, and examples of the trifunctional or higher acrylate monomer include trimethylolpropane triacrylate,
Pentaerythritol hexaacrylate, dipentaerythritol hexaacrylate and the like can be mentioned.

In order to adjust physical properties such as flexibility and surface hardness of the cured product, at least one of the above prepolymers, oligomers and monomers is used with the following ionizing radiation non-curable resin. 1 to 70% by weight, preferably 5 to 50% by weight can be used as a mixture.

As the ionizing radiation non-curable resin, thermoplastic resins such as urethane-based, cellulose-based, polyester-based, acrylic-based, butyral, polyvinyl chloride and polyvinyl acetate can be used. From the viewpoint, cellulose, urethane and butyral are preferred.

In particular, in the case of curing and curing with ultraviolet rays, the ionizing radiation-curable resin composition may contain, as a photopolymerization initiator, acetophenones, benzophenones, Michler benzoyl benzoate, α-amyloxime ester, tetramethylmeuram monosulfide. , Thioxanthones, and / or n-butylamine, triethylamine, tri-n-butylphosphine, and the like as a photosensitizer may be used in combination.

Here, the ionizing radiation means an electromagnetic wave or a charged particle beam having an energy quantum capable of polymerizing and cross-linking a molecule, and usually an ultraviolet ray or an electron beam is used. As the ultraviolet light source, a light source such as an ultra-high pressure mercury lamp, a high pressure mercury lamp, a low pressure mercury lamp, a carbon arc, a black light lamp, and a metal halide lamp is used.

As the electron beam source, there are various electron beam accelerators such as Cockloft-Walton type, Bande graph type, resonance transformer type, insulation core transformer type, linear type, dynamitron type, high frequency type, etc. 1000ke
V, preferably 100 to 300 keV.

The release layer is formed from the resin composition by a known coating method such as gravure coating, roll coating, and screen printing.

The picture layer is formed by a printing method suitable for the intended use, using an ink made of known resins, pigments, dyes, additives and the like. As the binder for the ink, one or more resins are selected from resins such as acrylic, vinyl chloride-vinyl acetate copolymer, polyester, cellulose, and urethane. The printing method is not particularly limited, and a conventional gravure printing, screen printing, offset gravure printing method, or the like can be used, but a gravure printing method is suitable for wood grain pattern printing. In addition to the picture layer, a metal or metal oxide deposited layer, an antistatic layer, an infrared blocking layer, an infrared absorbing layer, or the like may be provided to impart various functions to the transfer layer.

When a glittering resin layer is formed by solid printing using a glittering ink in combination with a wood grain pattern, a glittering ink prepared by adding a known resin, a glittering pigment, a dye, an additive or the like is also used. Is used, and gravure printing is mainly used as the printing method. Examples of glittering pigments include metal powders such as aluminum powder, copper powder, and brass powder, metal foil pieces, pigments having a metallic luster such as cut pieces of metal-deposited synthetic resin films, titanium dioxide-coated mica, fish scale foil, and bismuth trichloride. Pigments having pearl luster or interference luster, etc. are used.

As the adhesive layer, a heat-sensitive adhesive is used, and an acrylic resin, a vinyl chloride-vinyl acetate copolymer,
Polyamide resin, polyester resin, chlorinated polypropylene, chlorinated rubber, urethane resin, epoxy resin, styrene resin and the like are used. As the heat-sensitive adhesive, one or more resins are selected from the above-mentioned resins according to the material of the object to be transferred and the use of the transferred product. As a method for applying the heat-sensitive adhesive, a known coating method such as gravure coating, roll coating, knife coating, and screen printing can be used.

[0038]

The present invention will be described below in further detail with reference to examples. (Example 1) As a base sheet 11, as shown in FIG. 4A, a biaxially stretched polyethylene terephthalate film (Unitika) having a thickness of 25 μm formed by forming an uneven shape 16 on one side of the film by sandblasting and forming a mat. Manufactured by
A mat surface of the matted PET film 11 (16 irregular surfaces) is used.
And three reactive silicones (made by Toshiba Silicone Co., Ltd.)
The alkyd melamine resin added by weight% is roll-coated using a mixed solvent of methyl ethyl ketone and toluene as a diluting solvent, and cured at 180 ° C. for 5 minutes.
As shown in FIG. 1, a release layer 12 having a thickness of 2 to 3 μ was formed to produce a release substrate sheet 2.

Next, as shown in FIG. 4C, a gravure printing is performed on the release layer 12 side of the release substrate sheet 2 by using a coating liquid composed of a two-part curable epoxy resin. Thickness 2
A 3 μm release layer 13 was formed. Next, as shown in FIG. 4D, a picture layer 14 is formed by gravure printing using an acrylic polyol-based two-component curable ink, and further using an acrylic polyol-based two-component curable adhesive. The resultant was coated with a knife coater, and an adhesive layer 15 having a thickness of 50 μm was formed as a dry product to prepare a transfer sheet 1.

(Example 2) As the base sheet 11, FIG.
As shown in (a), a coating mat containing a coating liquid containing an inorganic matting agent was coated on one side of the film to form a mat, and a 25 μm thick coating mat PET film (manufactured by Unitika Ltd.) was used. Example 1 on the mat surface (16 irregularities) of the PET film 11
Similarly to the above, a release layer, a release layer, a pattern layer, and an adhesive layer were formed to prepare a transfer sheet 1 as shown in FIG. 6B.

Example 3 As a substrate sheet 11, a 25 μm thick PET film (manufactured by Toray Industries, Inc.) with one surface of the film subjected to corona treatment was used. Similarly, a release layer, a release layer, a picture layer, and an adhesive layer were formed to produce a transfer sheet 1 as shown in FIG.

(Comparative Example 1) Matting P used in Example 1
The ET film is used as the base sheet 11 and the base sheet 1
As shown in FIG. 8, a release layer 13 made of an acrylic resin, a solvent-resistant layer 13a made of a two-component curing type epoxy resin (the same resin layer as the release layer of Example 1), an acrylic polyol Pattern layer 14 made of a two-component curable resin
Were sequentially formed by gravure printing, and an adhesive layer 15 was formed in the same manner as in Example 1 to produce a transfer sheet 1.

(Comparative Example 2) The PET film used in Example 1 was used as a base sheet 11, and the mat surface of the base sheet 11 was made of a two-part curable epoxy resin as shown in FIG. A solvent layer 13a (the same resin layer as the release layer in Example 1) and a picture layer 14 made of an acrylic polyol-based two-part curable resin are sequentially formed by gravure printing, and further, as in Example 1, an adhesive layer 15 is formed. Was formed to produce the transfer sheet 1.

(Comparative Example 3) The coated mat PET film used in Example 2 was used as a base sheet 11, and the release layer 13 and the solvent-resistant layer 13a were formed on the mat surface of the base sheet 11 as in Comparative Example 1. Then, a pattern layer 14 and an adhesive layer 15 were sequentially formed to prepare a transfer sheet 1 as shown in FIG.

(Performance test of transfer sheet)
3 and the transfer sheets prepared in Comparative Examples 1, 2, and 3 were transferred to a calcium silicate plate using a roll transfer machine (manufactured by Navitas Co., Ltd.), and the releasability of the base sheet when the transfer was performed.
And the transfer layer transferred to the calcium silicate plate was compared with respect to performance such as solvent resistance, surface gloss change, and stain resistance. The results are as shown in Table 1.

[0046]

[Table 1]

The releasability was evaluated as follows: when the base sheet was peeled off in the transfer step, no ink was left on the pattern layer when the base sheet was peeled off. And The solvent resistance was evaluated by dropping methyl ethyl ketone and butyl acetate onto the surface of the transfer layer, and after 24 hours, those having no change in the pattern layer were rated as ○, and those having a change in the pattern layer were rated as x.・ The gloss change of the surface is measured by a rubbing test of methyl ethyl ketone (a test in which the surface of the transfer layer is reciprocated 50 times with a gauze containing methyl ethyl ketone under a load of 1 kg / cm ² ).
The sample having no change in gloss was evaluated as ○, and the sample with change in gloss was evaluated as ×. The stain resistance was evaluated by leaving red crayon on the surface of the transfer layer for 24 hours.

[0048]

As described above, according to the present invention,
Since the release layer is formed of a resin containing reactive silicone, and the release layer is formed of a thermosetting resin or an ionizing radiation-curable resin, even when the release layer and the release layer have irregularities, In the transfer step, since the releasable base material sheet has good releasability, a stable product can be obtained without causing a defect in the transfer layer, and the production efficiency can be improved. The surface (release layer) of the transfer layer is formed of a thermosetting resin or an ionizing radiation-curable resin, and is not affected by an organic solvent such as an aerosol and has excellent solvent resistance. The range can be expanded. Furthermore, since the surface of the transfer layer is excellent in solvent resistance even when it is matted, the use can be further expanded to a field that could not be developed with a conventional transfer sheet.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an example of a transfer sheet of the present invention.

FIG. 2 is a schematic sectional view showing another embodiment of the transfer sheet of the present invention.

FIG. 3 is a schematic cross-sectional view when the transfer sheet of the present invention is transferred to an object to be transferred and a peelable substrate sheet is peeled off.

FIG. 4 is an explanatory diagram when a transfer sheet of the present invention is manufactured.

FIG. 5 is an explanatory diagram when a transfer sheet of the present invention is transferred to a transfer target.

FIG. 6 is an explanatory diagram when a transfer sheet is manufactured according to the second embodiment.

FIG. 7 is a schematic cross-sectional view of a transfer sheet manufactured in Example 3.

FIG. 8 is a schematic sectional view of a transfer sheet manufactured according to Comparative Example 1.

FIG. 9 is a schematic cross-sectional view of a transfer sheet manufactured according to Comparative Example 2.

FIG. 10 is a schematic cross-sectional view of a transfer sheet manufactured according to Comparative Example 3.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transfer sheet 2 Releasable base material sheet 11 Base material sheet 11a Coating mat layer 12 Release layer 13 Release layer 13a Solvent-resistant layer 14 Picture layer 15 Adhesive layer 16 Concavo-convex shape 17 Transfer object

Claims (2)

[Claims] 1. A transfer sheet having at least a release layer and a release layer on a base sheet, wherein the release layer is made of a resin containing reactive silicone, and the release layer is a thermosetting resin or an ionizing radiation-curable resin. A transfer sheet comprising a resin. 2. The transfer sheet according to claim 1, wherein the surface of the release layer has fine irregularities.