JP2020163706A - Transfer sheet - Google Patents

Abstract

To provide a transfer sheet excellent in adhesion to a transfer body, heat-resistance, and appearance design.SOLUTION: A transfer sheet 1 is a transfer sheet that is transferred to a body to be transferred formed of an inorganic material, in which a releasable support body 10 and a transfer layer 2 containing an adhesive layer 40 are laminated thereon. The adhesive layer contains chloroethylene-acetate copolymer and acrylic resin. The blending ratio of the chloroethylene-acetate copolymer against the acrylic resin is 50% or over and less than 100%, and a glass transition temperature of the acrylic resin is 60°C or over.SELECTED DRAWING: Figure 1

Description

The present invention relates to a transfer sheet that is transferred to a transfer body made of an inorganic material.

Conventionally, as a means of surface makeup for buildings, furniture, fittings, building members, etc., a transfer sheet on which various patterns are printed has been transferred to a transferred body such as stone, wood, concrete, or metal. There is. For example, a decorative material having the same design as natural wood is produced by transferring a transfer sheet printed with a wood grain pattern similar to that of natural wood to a transfer body of a calcium silicate board. (See Patent Document 1).

JP-A-8-90707

The decorative material provided with the transfer sheet may be used in applications where heat resistance is required. However, since the plasticizer (for example, phthalate ester) added to the heat-sealing adhesive layer of the transfer sheet has a low pour point, the heat-welding adhesive layer tends to soften at a high temperature. Therefore, when a heat resistance test (for example, JAS specially processed decorative plywood type 2 immersion peeling test) is performed on a decorative material on which a transfer sheet is transferred to a calcium silicate board, the air that has been thermally expanded inside the transferred body or The generated gas cannot be suppressed by the heat-sealing adhesive layer, swelling occurs on the surface of the decorative material, and the adhesion to the calcium silicate plate cannot be maintained. In addition, since air bubbles are generated by heat even inside the heat-sealing adhesive layer, the air bubbles also cause swelling on the surface of the decorative material. Further, even when the surface of the decorative material does not swell, abnormalities such as deformation may occur in the decorative material, and the appearance design may be deteriorated.

An object of the present invention is to provide a transfer sheet having excellent adhesion to a transferred body, heat resistance and appearance design.

The present invention solves the above problems by the following solutions. In addition, in order to facilitate understanding, the description will be given with reference numerals corresponding to the embodiments of the present invention, but the description is not limited thereto. Further, the configurations described with reference numerals may be appropriately improved, or at least a part thereof may be replaced with other configurations.

The first invention is a transfer sheet (1) to be transferred to a transfer material made of an inorganic material, which comprises a releasable support (10) and a transfer layer (2) including an adhesive layer (40). , Are laminated, and the adhesive layer contains a vinyl chloride-vinyl acetate copolymer and an acrylic resin, and the vinyl chloride-vinyl acetate copolymer has a blending ratio of 50 or more and 100% with respect to the acrylic resin. It is less than, and the glass transition temperature of the acrylic resin is 60 ° C. or higher.

The second invention is the transfer sheet according to the first invention, and the glass transition temperature of the acrylic resin is 110 ° C. or lower.

The third invention is the transfer sheet according to the first or second invention, and the glass transition temperature of the vinyl chloride-vinyl acetate copolymer is 70 ° C. or higher.

The fourth invention is a transfer sheet according to any one of the first to third inventions, and the inorganic material is a calcium silicate plate.

A fifth invention is a transfer sheet according to any one of the first to fourth inventions, and the transfer layer includes at least one of a release layer and a decorative layer in addition to the adhesive layer.

According to the present invention, it is possible to provide a transfer sheet having excellent adhesion to a transferred body, heat resistance and appearance design.

It is sectional drawing of the transfer sheet 1 in embodiment. It is sectional drawing which shows the manufacturing method of the decorative material 100. It is sectional drawing which shows the manufacturing method of the decorative material 100. It is sectional drawing which shows the manufacturing method of the decorative material 100. It is a figure which shows the evaluation result of the decorative material which made the glass transition temperature Tg of an acrylic resin composition about 50 degreeC. It is a figure which shows the evaluation result of the decorative material which made the glass transition temperature Tg of an acrylic resin composition about 70 degreeC. It is a figure which shows the evaluation result of the decorative material which made the glass transition temperature Tg of an acrylic resin composition about 100 degreeC.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, each figure (excluding FIGS. 5 to 7) shown below including FIG. 1 is a diagram schematically shown, and the size and shape of each part are exaggerated as appropriate for easy understanding. are doing.
Numerical values such as dimensions of each member and material names described in the present specification are examples of embodiments, and are not limited thereto, and may be appropriately selected and used.

FIG. 1 is a cross-sectional view of the transfer sheet 1 in the present embodiment. The transfer sheet 1 can be stored or transported in the form shown in FIG.
As shown in FIG. 1, the transfer sheet 1 of the present embodiment includes a release support 10, a release layer 20, a decorative layer 30, a heat-welding adhesive layer 40, and a release base sheet 50. In the transfer sheet 1 of the present embodiment, the release layer 20, the decorative layer 30, and the heat-weld adhesive layer 40 constitute the transfer layer 2. In the present invention, the configuration of the transfer layer 2 is not limited to the combination of the present embodiment, and other functional layers may be included. Further, the transfer layer 2 may be configured not to include a part of the functional layers from the combination of the present embodiment.

(Structure of transfer sheet 1)
As the transfer sheet 1 of the present embodiment, a thin film sheet having flexibility is adopted as the releasable support 10 having releasability with respect to the release layer 20 (transfer layer 2). On the releasable support 10, the release layer 20, the decorative layer 30, and the heat-weld adhesive layer 40 constituting the transfer layer 2 are laminated in this order. In the present invention, "laminating in this order" means not only direct lamination but also indirect lamination. For example, between the releasable support 10 and the release layer 20, another It means that even if there is a layer of, it is acceptable.

<Releasable support 10>
The releasable support 10 is a sheet that supports the transfer layer 2 including the heat-sealing adhesive layer 40. The releasable support 10 has releasability (removability) with respect to the transfer layer 2, and after the transfer sheet 1 is adhered to the transferred body 60 (described later), the releasable layer 20 (transfer layer 2). It is peeled off from the interface with. The releasable support 10 is a sheet made of, for example, a polyester resin such as polyethylene terephthalate, polyethylene naphthalate, or polybutylene terephthalate, a polyolefin resin such as polypropylene, polyethylene, or polymethylpentene, or a thermoplastic resin such as a polyamide resin. Can be mentioned. Further, as the releasable support 10, a form in which the transfer layer 2 and a resin layer having releasability are laminated on the surface on the side where the transfer layer 2 of paper is formed can be mentioned. As the paper, high-quality paper, linter paper, glassine paper, parchment paper, kraft paper and the like can be used. Examples of the resin layer having releasability with respect to the transfer layer 2 include the above-mentioned various thermoplastic resins, melamine resin, epoxy resin, silicon resin and the like. Among these releasable supports, a biaxially stretched polyethylene terephthalate (PET) sheet is preferable in terms of excellent strength and flexibility. A conventionally known release layer may be formed on the surface of the release support 10 on the release layer 20 side, or a release treatment may be applied.
The film thickness of the releasable support 10 is about 10 to 100 μm, preferably 20 to 60 μm.

<Peeling layer 20>
The release layer 20 is a layer laminated to facilitate the release of the releasable support 10 from the transfer layer 2. The release layer 20 remains as the outermost layer of the transfer layer 2 after the transfer layer 2 on the transfer sheet 1 is adhered onto the transfer target 60 and the releasable support 10 is peeled off. The release layer 20 can be used as a protective layer on the outermost surface of the decorative material 100, but usually, the durability such as abrasion resistance, stain resistance, water resistance, and weather resistance of the surface of the decorative material 100 is further enhanced. After the transfer sheet 1 is transferred to the transferred body 60, a top coat layer 70 (described later) is further formed on the surface of the release layer 20.

Examples of the resin constituting the release layer 20 include methyl poly (meth) acrylate, ethyl poly (meth) acrylate, butyl poly (meth) acrylate, and methyl (meth) methyl acrylate-butyl acrylate. Acrylic resin such as coalescence, one of (meth) acrylic acid alkyl ester monomers such as (meth) methyl acrylate, (meth) ethyl acrylate, (meth) propyl acrylate, (meth) butyl acrylate, etc. It has two or more types and an OH group in molecules such as -2-hydroxyethyl (meth) acrylate, -2-hydroxypropyl (meth) acrylate, and -2-hydroxy-3-phenoxypropyl (meth) acrylate. Acrylic polyol, vinyl chloride-vinyl acetate copolymer, urethane obtained by copolymerizing one or more (meth) acrylic acid ester monomers with a styrene monomer or the like, if necessary. Examples thereof include resins and methyl (meth) acrylate-vinyl chloride-vinyl acetate copolymers. Here, (meth) acrylic acid is a notation meaning acrylic acid or methacrylic acid.

Further, in these compositions, a small amount of isocyanate compound or the like may be added for adjusting the peel strength. Further, these compositions include, for example, an ultraviolet absorber (UVA) composed of organic compounds such as benzotriazole, benzophenone, and triazine, or fine particles such as titanium oxide, zirconium oxide, and cerium oxide, and a hindered amine radical scavenger. A radical scavenger such as (HALS) may be added.
The layer thickness (dry) of the peeling layer 20 is, for example, about 1 to 2 μm.

<Decorative layer 30>
The decorative layer 30 is a layer on which the pattern (design) of the transfer sheet 1 is formed, and is formed by printing or the like. Examples of the resin constituting the decorative layer 30 include an acrylic resin, a vinyl chloride-vinyl acetate copolymer (vinyl acetate) resin, a cellulose resin, a urethane resin, and a composition obtained by mixing an acrylic resin and a vinyl acetate resin. And so on. Further, various known coloring pigments, coloring dyes and the like are added to the decorative layer 30.
The layer thickness (dry) of the decorative layer 30 is, for example, about 5 μm.

<Heat-weld adhesive layer 40>
The heat-welding adhesive layer 40 is a layer that adheres the transfer sheet 1 and the transfer body 60 when the transfer sheet 1 is transferred to the transfer body 60.
The heat-sealing adhesive layer 40 is provided on the transfer layer 2 on the opposite side of the releasable support 10. The heat-welding adhesive layer 40 contains a vinyl chloride-vinyl acetate copolymer and an acrylic resin (or an acrylic resin composition).

The vinyl chloride-vinyl acetate copolymer is a material that is easily adhered to the sealer layer 62 (described later) formed on the surface of the transferred body 60. In the step of heat-transferring the transfer sheet 1 to the transferred body 60, which will be described later, the transferability and adhesion of the transfer sheet 1 to the transferred body 60 by the vinyl chloride-vinyl acetate copolymer contained in the heat-welding adhesive layer 40. You can get sex.

The vinyl chloride-vinyl acetate copolymer is a material for imparting heat resistance to the decorative material 100 (described later) to which the transfer sheet 1 has been transferred. The glass transition temperature (Tg) of the vinyl chloride-vinyl acetate copolymer is preferably 70 ° C. or higher.
In the decorative materials of Examples 1 to 3 described later, the blending ratio of the vinyl chloride-vinyl acetate copolymer to the total of the vinyl chloride-vinyl acetate copolymer and the acrylic resin composition is set to 50% or 80%. There is. On the other hand, if the compounding ratio of the vinyl chloride-vinyl acetate copolymer to the acrylic resin composition is set to 100% so that the acrylic resin is not contained, the appearance design after the type 2 erosion peeling test (described later) is deteriorated. Has been confirmed. Therefore, the blending ratio of the vinyl chloride-vinyl acetate copolymer to the total of the vinyl chloride-vinyl acetate copolymer and the acrylic resin composition is preferably 50% or more and less than 100%, and 70% or more and less than 100%. It is more desirable to set it to 70% or more and 90% or less.

The acrylic resin is a material for imparting heat resistance to the decorative material 100 (described later) to which the transfer sheet 1 has been transferred. The glass transition temperature (Tg) of the acrylic resin is preferably 60 ° C. or higher.
The layer thickness (dry) of the heat-sealing adhesive layer 40 is preferably 1 or more and 10 μm or less, and more preferably 1 or more and 2 μm or less.

<Release base sheet 50>
The release base sheet 50 is a sheet that is temporarily laminated on the heat-sealing adhesive layer 40. The release base sheet 50 is peeled from the transfer sheet 1 in order to expose the heat-weldable adhesive layer 40 when the transfer sheet 1 is transferred to the transfer target 60. Examples of the material constituting the release base sheet 50 include silicon release type polyethylene terephthalate (PET), untreated polyethylene terephthalate, polypropylene and the like.
The thickness of the release base sheet 50 is preferably 10 μm or more and 100 μm or less, and more preferably 20 μm or more and 60 μm or less. The release base sheet 50 is provided as needed.

(Manufacturing method of decorative material 100)
Next, a method for producing the decorative material 100 will be described.
2, FIG. 3 and FIG. 4 are cross-sectional views showing a method of manufacturing the decorative material 100.
First, as shown in FIG. 2A, the release base sheet 50 is peeled from the transfer sheet 1. By peeling the release base sheet 50 from the transfer sheet 1, the surface (joint surface) of the heat-welding adhesive layer 40 opposite to the decorative layer 30 is exposed.

Next, as shown in FIG. 2B, the transfer sheet 1 from which the release base sheet 50 has been peeled off is laminated on the transferred body 60. The transfer sheet 1 can be continuously laminated on the transferred body 60, for example, in the form of a roll-to-roll, a roll-to-sheet, or the like.
“Roll to roll” means that a band-shaped transfer sheet 1 is pulled out from a roll (winding) and supplied to a flat plate-shaped transfer target (transfer target body 61), and a transfer layer 2 is placed on the transfer target. This is a processing mode in which a strip-shaped releasable support (removable support 10) from which the transfer layer 2 has been released is wound again on a roll after being laminated.

Further, the "roll to sheet" means that the strip-shaped transfer sheet 1 is pulled out from the roll (winding) and supplied to the flat plate-shaped transfer body, and before and after the transfer layer 2 is laminated on the transfer target body. The transfer sheet 1 is cut to a size roughly equivalent to one sheet to be transferred and made into single leaves, and the single-leaf releasable support from which the transfer layer 2 is released is removed (discarded) one by one. The processing form to be performed. Alternatively, the transfer sheet 1 may be manually laminated on the transferred body 60 and then pressed with a spatula or the like to uniformly adhere to the surface of the transferred body 60.

As shown in FIG. 2B, the transferred body 60 of the present embodiment includes a transferred body main body 61 and a sealer layer 62.
The transfer body body 61 is the transfer body itself to which the transfer sheet 1 is transferred. The body to be transferred 61 is made of an inorganic material. Examples of the inorganic material constituting the transfer body body 61 include a porous material such as calcium silicate and a porous stone material.

The sealer layer 62 is an undercoat layer for sealing or filling the surface of the transfer body body 61 to improve the adhesion between the transfer body body 61 and the transfer sheet 1. Examples of the material constituting the sealer layer 62 include urethane resin.

Next, as shown in FIG. 3C, the releasable support 10 is peeled off from the transfer sheet 1 adhered onto the transfer body 60. The transfer step is completed by peeling the releasable support 10 from the transfer sheet 1, and the surface of the peeling layer 20 opposite to the decorative layer 30 is exposed. In FIG. 3C, the heat-weld adhesive layer 40 of the transfer sheet 1 and the transferred body 60 are bonded with a strong adhesive force, so that when the releasable support 10 is peeled off from the transfer sheet 1. , The transfer sheet 1 does not peel off from the transferred body 60.

Next, as shown in FIG. 3D, the top coat layer 70 is formed on the exposed surface of the release layer 20. Hereinafter, the laminate of the transfer layer 2 including the top coat layer 70 and the transferred body 60 is also referred to as “decorative material 100”. The top coat layer 70 is a layer for imparting color, gloss, etc. to the surface of the decorative material 100 and protecting the decorative layer 30 as a finishing agent. Further, by forming the top coat layer 70, it is possible to impart durability such as weather resistance, stain resistance, and abrasion resistance to the decorative material 100. Examples of the top coat layer 70 include an acrylic resin, a silicon-based resin, a fluororesin, and a urethane resin that are cured by ionizing radiation such as ultraviolet rays (UV resin) and electron beams (EB), or by heat.
The thickness of the top coat layer 70 is not particularly limited, but is preferably 5 μm or more and 1000 μm or less, and more preferably 10 μm or more and 300 μm or less.

Next, as shown in FIG. 4 (E), the decorative material 100 is heated and pressurized for a predetermined time (hereinafter, also referred to as “thermal transfer”). In FIG. 4E, the heating and pressurization of the decorative material 100 are schematically represented by arrows. In the thermal transfer, pressure may be applied to the decorative material 100 while blowing hot air, or the decorative material 100 may be installed in a heating furnace set to a predetermined temperature. Further, a roller provided with a heat source inside may be moved over a predetermined time while being pressed against the surface of the decorative material 100. The method of heating the decorative material 100 and the method of applying pressure can be appropriately selected. When the top coat layer 70 is an ionizing radiation curable resin, it is cured by irradiating it with ionizing radiation such as ultraviolet rays. In addition, in FIG. 4 (F), a state in which the inside of the heat-sealing adhesive layer 40 is cured by heating is represented by a fine dot pattern.
By going through the above steps, it is possible to obtain the decorative material 100 in which the transfer sheet 1 is transferred to the transferred body 60.

Next, the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the present invention is not limited to the following examples.
A 25 μm-thick biaxially stretched PET sheet (“E5001” manufactured by Toyobo Co., Ltd.) was prepared as the releasable support 10, and an acrylic resin composition (“A50-1” Tg at about 50 ° C. Showa Inc.) was prepared on one surface thereof. (Manufactured by Kogyo Co., Ltd.) was applied to form a release layer 20 having a film thickness (dry) of 1 μm. Printing on the release layer 20 a plurality of times using a gravure ink (“EIS” manufactured by Showa Ink Industry Co., Ltd.) composed of a mixed resin composition of an acrylic resin and a vinyl chloride-vinyl acetate copolymer and a coloring pigment. Was performed to form the decorative layer 30 as shown in FIG. A plurality of laminates composed of the above-mentioned releasable support 10, the release layer 20, and the decorative layer 30 were produced as the bases of Comparative Examples and Examples described later.

On the other hand, a composition of a vinyl chloride-vinyl acetate copolymer ("Chemical X (NT)" Tg about 75 ° C. manufactured by Showa Ink Industry Co., Ltd.) and an acrylic resin composition ("A50-1" Tg about 50 ° C., " Inks prepared by blending "SSCON" Tg at about 70 ° C. and "Chemical X (NT) Tg at about 100 ° C., both manufactured by Showa Ink Industry Co., Ltd.) at a ratio of 5 levels from 0: 100 to 100: 0. Then, the inks of the above 15 (3 × 5) patterns were applied onto the decorative layer 30 of the above-mentioned laminate to form a heat-weldable adhesive layer 40 having a film thickness (dry) of 1 μm. , A plurality of transfer sheets used as a base for Comparative Examples and Examples were prepared.

Further, as the transfer body 60, a calcium silicate plate (transfer body body 61 and sealer layer 62) is prepared, and after preheating this at 100 ° C., the transfer sheets of Comparative Examples and Examples are 160 on the surface thereof. The decorative materials of Comparative Examples and Examples were prepared by thermal transfer at ~ 180 ° C. The releasable support 10 is peeled from this decorative material, a solvent-free acrylic resin-based ultraviolet curable resin paint is applied onto the exposed release layer 20, and the top coat layer is cured by ultraviolet irradiation from a mercury lamp. 70 was formed.
By the above procedure, the decorative materials of Comparative Examples 1 to 7 (11 types) and the decorative materials of Examples 1 to 4 (4 types) were prepared as test samples, respectively.

Adhesion was tested for the above 15 types of decorative materials, and heat resistance and appearance design were evaluated for the decorative materials that passed this test.
Adhesion was tested by a cross-cut method according to JIS K5600-5-6. The case where peeling of the transfer sheet from the transferred body 60 (including the case where a part of the transfer sheet remained) was observed was marked with “x”, and the case where peeling was not observed was marked with “◯”.
As a test for evaluating heat resistance, a JAS specially processed decorative plywood type 2 immersion peeling test was carried out. Specifically, the state of the surface of the decorative material after immersing the decorative material as a test sample in warm water at 70 ° C. for 2 hours and then drying at 60 ° C. for 3 hours was observed. When a remarkable swelling (5 mm or more) is observed on the surface of the decorative material, "x" is observed, when a fine swelling (2 mm or more and less than 5 mm) is observed, "△", and a very fine swelling (less than 2 mm) is observed. The case where it was observed but there was no problem in practical use was evaluated as "○", and the case where no swelling was observed was evaluated as "◎".

The appearance design was evaluated as "x" when there was an abnormality such as deformation in the decorative material, and "○" when there was no problem in appearance.
In the explanation of the evaluation results described later, the evaluation of "x" or "Δ" is NG, and the evaluation of "○" or "◎" is OK. Further, in FIGS. 5 to 7, "-" indicates that the evaluation was not performed because the test was "Δ" or "x" in the previous stage test.

The evaluation results of each of the above test items for each of the decorative materials of Comparative Examples 1 to 7 and Examples 1 to 4 are shown in FIGS. 5 to 7.
FIG. 5 is a diagram showing the evaluation results of the decorative material in which the glass transition temperature Tg of the acrylic resin composition is about 50 ° C.
FIG. 6 is a diagram showing the evaluation results of the decorative material in which the glass transition temperature Tg of the acrylic resin composition is about 70 ° C.
FIG. 7 is a diagram showing the evaluation results of the decorative material in which the glass transition temperature Tg of the acrylic resin composition is about 100 ° C.

As shown in FIG. 5, in the decorative material in which the glass transition temperature Tg of the acrylic resin composition was about 50 ° C., the evaluation results of Comparative Examples 1, 2 and 5 were as follows.
Comparative Example 1: The cosmetic material in which the heat-weldable adhesive layer 40 was formed only with the acrylic resin composition had NG adhesion.
Comparative Example 2: In the heat-weldable adhesive layer 40, the decorative materials in which the compounding ratio of the vinyl chloride-vinyl acetate copolymer to the acrylic resin was 20:80 to 80:20 (3 patterns) had good adhesion. It was OK, but the heat resistance was NG.
Comparative Example 5: A decorative material in which the heat-weldable adhesive layer 40 was formed only with the composition of a vinyl chloride-vinyl acetate copolymer was OK in adhesion and heat resistance, but was NG in the evaluation of appearance design. It became.

As shown in FIG. 6, the evaluation results of Comparative Example 3, Comparative Example 6, Example 1 and Example 2 in the decorative material in which the glass transition temperature Tg of the acrylic resin composition was about 70 ° C. are as follows. became.
Comparative Example 3: The decorative materials in which the compounding ratios of the vinyl chloride-vinyl acetate copolymer to the acrylic resin were 0: 100 and 20:80 (2 patterns) were all OK in adhesion, but heat resistance was high. It became NG.
Comparative Example 6: A decorative material in which the heat-weldable adhesive layer 40 was formed only with the composition of a vinyl chloride-vinyl acetate copolymer was OK in adhesion and heat resistance, but was NG in the evaluation of appearance design. It became.
Example 1: The decorative material in which the compounding ratio of the vinyl chloride-vinyl acetate copolymer to the acrylic resin was 50:50 was OK in all of the evaluations of adhesion, heat resistance and appearance design.
Example 2: The decorative material in which the compounding ratio of the vinyl chloride-vinyl acetate copolymer to the acrylic resin was 80:20 was OK in all of the evaluations of adhesion, heat resistance and appearance design.

As shown in FIG. 7, the evaluation results of Comparative Example 4, Comparative Example 7, and Examples 3 and 4 in the decorative material in which the glass transition temperature Tg of the acrylic resin composition was about 100 ° C. were as follows. ..
Comparative Example 4: The adhesiveness of the decorative material in which the compounding ratio of the vinyl chloride-vinyl acetate copolymer to the acrylic resin was 0: 100 and 20:80 (2 patterns) was NG.
Comparative Example 7: A decorative material in which the heat-weld adhesive layer 40 was formed only with the composition of a vinyl chloride-vinyl acetate copolymer was OK in adhesion and heat resistance, but was NG in the evaluation of appearance design. It became.

Example 3: The decorative material in which the compounding ratio of the vinyl chloride-vinyl acetate copolymer to the acrylic resin was 50:50 was OK in all of the evaluations of adhesion, heat resistance and appearance design.
Example 4: A decorative material having a blending ratio of vinyl chloride-vinyl acetate copolymer acrylic resin of 80:20 was OK in all evaluations of adhesion, heat resistance and appearance design.

This is because, in Examples 1 to 4, the compounding ratio of the vinyl chloride-vinyl acetate copolymer to the total of the vinyl chloride-vinyl acetate copolymer and the acrylic resin composition was 50 or more and 80% or less. It is considered that the adhesion with the transfer layer 2 transferred to the transferred body 60 is improved. Further, in Examples 1 to 4, since the glass transition temperature Tg of the acrylic resin composition contained in the heat-sealing adhesive layer 40 was set to about 70 ° C. or higher, the softening of the heat-sealing adhesive layer 40 by heating was suppressed. It is possible that According to this, the movement of the air thermally expanded inside the transferred body 60 due to heating or the gas generated inside the transferred body 60 was suppressed by the relatively hard heat-sealing adhesive layer 40, so that the makeup was made up. It is probable that no swelling due to air bubbles occurred on the surface of the material. It is possible that air bubbles were also generated inside the heat-welding adhesive layer 40 due to heat, but it is considered that these air bubbles were also suppressed by the heat-welable adhesive layer 40.
From the above results, it was clarified that all of the decorative materials of Examples 1 to 4 were excellent in adhesion, heat resistance, and appearance design.

The transfer sheet according to the present invention can impart excellent adhesion, heat resistance, and appearance design to the transferred object. The decorative material provided with the transfer layer of the transfer sheet is a building wall material (exterior material, interior material), partition, door, window frame and other fittings, building materials, desk, dining table, cupboard, counter table, sink. In addition to furniture such as cupboards and upholstery, it can also be applied to indoor or outdoor (exterior) cover materials for vehicles such as automobiles, railroad vehicles, ships, and aircraft, various signs, and panel materials for outdoor advertisements. ..

1 Transfer sheet 2 Transfer layer 10 Releasable support 20 Release layer 30 Decorative layer 40 Heat-weld adhesive layer 50 Release base sheet 60 Transfer material 70 Top coat layer 100 Decorative material

Claims (5)

A transfer sheet that is transferred to an object to be transferred made of an inorganic material.
The releasable support and the transfer layer including the adhesive layer are laminated,
The adhesive layer contains a vinyl chloride-vinyl acetate copolymer and an acrylic resin.
The vinyl chloride-vinyl acetate copolymer has a blending ratio of 50 or more and less than 100% with respect to the acrylic resin.
The glass transition temperature of the acrylic resin is 60 ° C. or higher.
Transfer sheet. The transfer sheet according to claim 1.
The glass transition temperature of the acrylic resin is 110 ° C. or lower.
Transfer sheet. The transfer sheet according to claim 1 or 2.
The glass transition temperature of the vinyl chloride-vinyl acetate copolymer is 70 ° C. or higher.
Transfer sheet. The transfer sheet according to any one of claims 1 to 3.
The inorganic material is a calcium silicate plate.
Transfer sheet. The transfer sheet according to any one of claims 1 to 4.
The transfer layer includes at least one of a release layer and a decorative layer in addition to the adhesive layer.
Transfer sheet.

Images