Laminated sheet, skin design sheet, and method for producing skin design sheet

Abstract

Provided is a laminated sheet having a natural appearance when applied to the skin and that can be used as a skin design sheet. This laminated sheet is provided with an adhesive layer and a resin layer including at least a base material layer. With the use of a variable angle photometer, when visible light is incident on one surfaces of the resin layer at -45° with respect to the normal direction of the resin layer and the ratio (I0° / I45°) of the reflection intensity I0° at a light receiving angle of 0° to the reflection intensity I45° at a light receiving angle of 45°, measured from the surface side is in the range of 0.6 to 1.0.

Description

Laminated Sheet, Skin Design Sheet, and Method for Manufacturing Skin Design Sheet Cross - reference to Related Applications

[0001] This application claims priority based on Japanese Patent Application No. 2024 - 189905 filed in Japan on October 29, 2024. The entire disclosure content of these is incorporated herein by reference and made part of the disclosure of this specification.

[0002] The present invention relates to a laminated sheet, a skin design sheet, and a method for manufacturing a skin design sheet.

[0003] As a laminated sheet used by being attached to the skin, a skin design sheet is known. The skin design sheet includes, for example, a release sheet, an adhesive layer, a base material layer, and a protective sheet in this order in the thickness direction. The skin design sheet is attached to the user's skin by a procedure of peeling the release sheet from the adhesive layer and attaching the adhesive layer to the skin, and then peeling the protective sheet from the base material layer.

[0004] For the skin design sheet, a natural appearance with suppressed shininess is required so that the attachment part is not conspicuous when attached to the skin (see, for example, Patent Document 1).

[0005] Japanese Patent No. 7167692 Gazette

[0006] Examples of the skin design sheet include a tattoo seal, a body paint seal, and a skin concealment sheet. The tattoo seal and the body paint seal are sheets with various patterns printed on the base material. The tattoo seal and the body paint seal are sold, for example, at variety stores, sports and music event venues, amusement parks, etc., and are used to enhance the atmosphere. The skin concealment sheet is a sheet in which a predetermined color is colored on the base material in advance by screen printing or the like. The skin concealment sheet is used, for example, to conceal discolored parts such as skin wounds or stains. These skin design sheets are required to have a natural appearance when attached to the skin.

[0007] An object of the present disclosure is to provide a laminated sheet that can be used as a skin design sheet and has a natural appearance when attached to the skin. Another object of the present disclosure is to provide a skin design sheet that has a natural appearance when attached to the skin.

[0008] The laminated sheet of the present disclosure includes an adhesive layer and a resin layer including at least a base material layer. Using a variable-angle photometer, visible light is incident on one surface of the resin layer at -45° with respect to the normal direction of the resin layer, and the reflection intensity I at a light-receiving angle of 0° measured from the surface side ０° and the reflection intensity I at a light-receiving angle of 45° ４５° The ratio (I ０° / I ４５° ) is 0.6 or more and 1.0 or less.

[0009] According to the present disclosure, it is possible to provide a laminated sheet that can be used as a skin design sheet and has a natural appearance when attached to the skin. Also, according to the present disclosure, it is possible to provide a skin design sheet that has a natural appearance when attached to the skin.

[0010] It is a cross-sectional view of a laminated sheet which is an embodiment to which the present invention is applied. It is a cross-sectional view of a laminated sheet of the first embodiment to which the present invention is applied. It is a cross-sectional view of a laminated sheet of the first embodiment to which the present invention is applied. It is a cross-sectional view of a laminated sheet of the first embodiment to which the present invention is applied. It is a cross-sectional view of a laminated sheet of the first embodiment to which the present invention is applied. It is a cross-sectional view of a laminated sheet of the first embodiment to which the present invention is applied. It is a cross-sectional view of a laminated sheet of the first embodiment to which the present invention is applied. It is a cross-sectional view of a laminated sheet of the first embodiment to which the present invention is applied. It is a cross-sectional view of a laminated sheet of the first embodiment to which the present invention is applied. It is a cross-sectional view of a laminated sheet of the second embodiment to which the present invention is applied. It is a cross-sectional view of a laminated sheet of the second embodiment to which the present invention is applied. It is a cross-sectional view showing a method for manufacturing a skin design sheet of the second embodiment to which the present invention is applied. It is a cross-sectional view showing a method for manufacturing a skin design sheet of the second embodiment to which the present invention is applied. It is a cross-sectional view showing a method for manufacturing a skin design sheet of the second embodiment to which the present invention is applied. It is a cross-sectional view showing a method for manufacturing a skin design sheet of the second embodiment to which the present invention is applied.

[0011] The embodiments of this disclosure will be described in detail below. This disclosure can be implemented in many different forms and is not construed as being limited to the embodiments described below. The drawings may schematically represent the width, thickness, and shape of each layer, etc., compared to the embodiments, in order to clarify the explanation, but these are merely examples and do not limit the interpretation of this disclosure. In this specification and in each figure, elements similar to those already described in the previously shown figures are denoted by the same reference numerals, and detailed explanations may be omitted as appropriate.

[0012] In this disclosure, if there are multiple candidate upper limits and multiple candidate lower limits for a certain parameter, the numerical range of that parameter may be constructed by combining any one candidate upper limit and any one candidate lower limit. Examples of such parameters include physical properties, component content ratios, and layer thickness. As an example, let's consider the statement, "Parameter B is preferably A1 or higher, more preferably A2 or higher, and even more preferably A3 or higher. Parameter B is preferably A4 or lower, more preferably A5 or lower, and even more preferably A6 or lower." In this example, the numerical range of parameter B may be A1 or higher and A4 or lower, A1 or higher and A5 or lower, A1 or higher and A6 or lower, A2 or higher and A4 or lower, A2 or higher and A5 or lower, A2 or higher and A6 or lower, A3 or higher and A4 or lower, A3 or higher and A5 or lower, and A3 or higher and A6 or lower.

[0013] In this specification, each component (for example, resin material and additives such as colorants) mentioned in the following description may be used individually or in combination of two or more.

[0014] <First Embodiment> [Laminated Sheet] The laminated sheet of the first embodiment of the present disclosure comprises at least an adhesive layer and a resin layer. The laminated sheet may further include a release sheet on the surface of the adhesive layer opposite to the surface facing the resin layer. The laminated sheet may optionally include the release sheet, adhesive layer, and resin layer in this order in the thickness direction.

[0015] Hereinafter, a specific example of the laminated sheet of the first embodiment of this disclosure will be described with reference to the drawings. The laminated sheet 1A shown in Figure 1 comprises a release sheet 10, an adhesive layer 20, and a resin layer 30 including at least a base layer 31, in this order in the thickness direction. In this example, the resin layer 30 is the base layer 31. In addition, one or both surfaces of the resin layer 30 may be colored with a coloring agent to a desired color, such as skin tone. A printed layer, not shown, may be provided on either one or both surfaces of the resin layer 30. By coloring the surface of the resin layer 30 or by applying a printed layer, the surface of the object to be attached (also called the substrate) can be effectively concealed when the laminated sheet 1 is attached to the object to be attached (also called the adherend).

[0016] The laminated sheet may have a resin layer further comprising a receiving layer. In one embodiment, as shown in Figure 2, the laminated sheet 1B may comprise a release sheet 10, an adhesive layer 20, a base layer 31, and a receiving layer 32 in this order in the thickness direction. In this example, the resin layer 30 has a structure in which the base layer 31 and the receiving layer 32 are laminated. The surface of the resin layer 30 is either the surface on the base layer 31 side or the surface on the receiving layer 32 side.

[0017] The laminated sheet may have a resin layer further comprising an opacity layer. In one embodiment, as shown in Figure 3, the laminated sheet 1C may have a release sheet 10, an adhesive layer 20, a base layer 31, and an opacity layer 33 in this order in the thickness direction. In this example, the resin layer 30 has a structure in which the base layer 31 and the opacity layer 33 are laminated. The surface of the resin layer 30 is either the surface on the base layer 31 side or the surface on the opacity layer 33 side. In another embodiment, as shown in Figure 4, the laminated sheet 1D may have a release sheet 10, an adhesive layer 20, a base layer 31, an opacity layer 33, and a receiving layer 32 in this order in the thickness direction. In this example, the resin layer 30 has a structure in which the base layer 31, the opacity layer 33, and the receiving layer 32 are laminated in this order in the thickness direction. The surface of the resin layer 30 is either the surface on the base layer 31 side or the surface on the receiving layer 32 side. In one embodiment, as shown in Figure 5, the laminated sheet 1E may comprise a release sheet 10, an adhesive layer 20, a base layer 31, a receiving layer 32, and a concealing layer 33 in this order in the thickness direction. In this example, the resin layer 30 has a structure in which the base layer 31, the receiving layer 32, and the concealing layer 33 are laminated in this order in the thickness direction. The surface of the resin layer 30 is either the surface on the base layer 31 side or the surface on the concealing layer 33 side.

[0018] The laminated sheet may further comprise a protective layer within the resin layer. In one embodiment, as shown in Figure 6, the laminated sheet 1F may comprise a release sheet 10, an adhesive layer 20, a base layer 31, a receiving layer 32, an opacity layer 33, and a protective layer 34 in this order in the thickness direction. In this example, the resin layer 30 has a configuration in which the base layer 31, the receiving layer 32, the opacity layer 33, and the protective layer 34 are laminated in this order in the thickness direction. The surface of the resin layer 30 is either the surface on the base layer 31 side or the surface on the protective layer 34 side. In another embodiment, as shown in Figure 7, the laminated sheet 1G may comprise a release sheet 10, an adhesive layer 20, a base layer 31, an opacity layer 33, a receiving layer 32, and a protective layer 34 in this order in the thickness direction. In this example, the resin layer 30 has a configuration in which the base layer 31, the opacity layer 33, the receiving layer 32, and the protective layer 34 are laminated in this order in the thickness direction. Furthermore, the surface of the resin layer 30 is either the surface on the base material layer 31 side or the surface on the protective layer 34 side.

[0019] The laminated sheet may further include an adhesive layer between the base layer and the concealing layer in the resin layer. In one embodiment, as shown in Figure 8, the laminated sheet 1H may have a release sheet 10, an adhesive layer 20, a base layer 31, an adhesive layer 35, a concealing layer 33, a receiving layer 32, and a protective layer 34 in this order in the thickness direction. In this example, the resin layer 30 has a structure in which the base layer 31, adhesive layer 35, concealing layer 33, receiving layer 32, and protective layer 34 are laminated in this order in the thickness direction. The surface of the resin layer 30 is either the surface on the base layer 31 side or the surface on the protective layer 34 side.

[0020] In these examples, the receptor layer may be colored with a dye or other coloring agent to a desired color, such as skin tone, or an image using the desired color may be formed on it.

[0021] The laminated sheet may further include a protective sheet on the surface opposite to the surface of the resin layer facing the adhesive layer, if necessary. In one embodiment, as shown in Figure 9, the laminated sheet 1I may comprise a release sheet 10, an adhesive layer 20, a base layer 31, an adhesive layer 35, a concealing layer 33, a receiving layer 32' on which an image is formed, a protective layer 34, and a protective sheet 40 in this order in the thickness direction. In this example, the resin layer 30 has a structure in which the base layer 31, adhesive layer 35, concealing layer 33, receiving layer 32', and protective layer 34 are laminated in this order in the thickness direction. The surface of the resin layer 30 is either the surface facing the base layer 31 or the surface facing the protective layer 34.

[0022] In one embodiment, the laminated sheet of this disclosure is in the form of a long strip. Figures 1 to 9 are, for example, cross-sectional views perpendicular to the longitudinal direction of the laminated sheets 1A to 1I.

[0023] <Resin Layer> The laminated sheet of the present disclosure comprises a resin layer. The resin layer preferably includes at least a substrate layer and optionally further includes one or more layers selected from an adhesive layer, an opacity layer, a receiving layer, and a protective layer.

[0024] <Substrate Layer> The laminated sheet of this disclosure includes a substrate layer. Examples of the substrate layer include a resin film formed from a resin material. Examples of resin materials include polyurethane, polyester, polyamide, polyimide, polyolefin, vinyl resin, styrene resin, acrylic resin, and cellulose resin. The substrate layer may also contain biodegradable plastics as the resin material, or it may contain polylactic acid resins.

[0025] As the base layer, it is preferable to use, for example, an expandable base material. Examples of expandable base materials include the resin films mentioned above. Among these resin films, polyvinyl chloride (PVC) film, urethane film, olefin film, and polyethylene film are preferred as expandable base materials.

[0026] The stretchable substrate preferably has an elongation rate of 30% to 100%. When the elongation rate of the stretchable substrate is within this range, the laminate can follow the expansion and contraction of the adherend when the laminate is attached to the adherend. The elongation rate of the stretchable substrate is the elongation rate obtained by a test method compliant with JIS K 7127:1999. The elongation rate is expressed by the following formula (1): Elongation rate (%) = 100 × (L - L0) / L0 ... (1)

[0027] In equation (1), L is the length at which the stretchable material breaks when pulled at a speed of 200 mm / min using a tensile testing machine. In equation (1), L0 is the length of the stretchable material before being pulled by the tensile testing machine. For example, a Tensilon universal material tester can be used as the tensile testing machine.

[0028] The base layer may contain additives. Examples of additives include UV absorbers, light stabilizers, antioxidants, colorants, fillers, and release agents. The base layer may also contain colorants as needed. This allows the color tone of the laminated sheet to be matched to a desired color (e.g., skin tone). Examples of colorants include pigments and dyes.

[0029] The substrate layer may contain a white pigment. Examples of white pigments include silica, titanium dioxide, zinc oxide, cerium oxide, titanium mica, muscovite, white carbon, calcium carbonate, barium sulfate, alumina white, and talc. Among these white pigments, titanium dioxide is preferred from the viewpoint of whiteness. The substrate layer may contain one or more white pigments.

[0030] The content of the white pigment in the base layer is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, preferably 10% by mass or less, and more preferably 5.0% by mass or less. For example, the content of the white pigment in the base layer is 0.01% by mass or more and 10% by mass or less. Increasing the content of the white pigment in the base layer effectively hides the color of the substrate when the laminated sheet is attached to the substrate. On the other hand, decreasing the content of the white pigment in the base layer effectively reduces the unnatural appearance when the laminated sheet is attached to the skin.

[0031] The base layer may further contain a pearl pigment. Examples of pearl pigments include oxide-coated micas such as iron oxide-coated mica, iron oxide-coated titanium mica, chromium oxide-coated titanium mica, carmine-coated titanium mica, organic pigment-coated titanium mica, titanium oxide-coated mica, titanium oxide-coated synthetic mica, fish scales, shell fragments, and pearl fragments. The pearl pigment is not particularly limited, and other pearl pigments may be used. In addition, pearl pigments obtained by coating the surface of the above-mentioned pearl pigments with a colored pigment can also be used. The shape of the pearl pigment is not particularly limited, but flat or flake-shaped ones are preferred. With pearl pigments of this shape, the pearl pigment can be arranged substantially parallel to the surface of the component containing the pearl pigment, thereby providing a high pearlescent effect through the action of multiple light reflections.

[0032] The thickness of the base layer is preferably 1 μm or more, more preferably 3 μm or more, and even more preferably 5 μm or more. Alternatively, the thickness of the base layer is preferably 100 μm or less, more preferably 80 μm or less, and even more preferably 15 μm or less. For example, the thickness of the base layer is 1 μm or more and 100 μm or less. When the thickness of the base layer is 3 μm or more, for example, when the laminated sheet is attached to a substrate, the occurrence of wrinkles can be effectively suppressed. Also, when peeling the release sheet from the laminated sheet, the base layer (sticker paper) does not wrinkle, making it easy to peel off and attach the release sheet, improving work efficiency. Furthermore, when the thickness of the base layer is 100 μm or less, discomfort for the user can be more effectively suppressed when the laminated sheet is attached to the skin.

[0033] A printed layer may be provided on the surface of the substrate layer. The printed layer may be a layer for matching the color tone of the laminated sheet to a desired color (e.g., skin tone). Preferably, the printed layer contains a colorant. Examples of colorants include pigments and dyes.

[0034] (Concealing layer) The laminated sheet of the present disclosure may include a concealing layer in the resin layer. In one embodiment, the laminated sheet may have an adhesive layer, a substrate layer, and a concealing layer in this order in the thickness direction.

[0035] An example of a concealing layer is a white primer layer containing a white pigment and a resin material. Examples of white pigments include silica, titanium dioxide, zinc oxide, cerium oxide, titanium mica, muscovite, white carbon, calcium carbonate, barium sulfate, alumina white, and talc. Among these white pigments, titanium dioxide is preferred from the viewpoint of whiteness. The concealing layer may contain one or more white pigments.

[0036] The content of the white pigment in the opacity layer is preferably 40% by mass or more, more preferably 50% by mass or more, preferably 85% by mass or less, and more preferably 80% by mass or less. For example, the proportion of white pigment in the opacity layer is 40% by mass or more and 85% by mass or less. Increasing the content of the white pigment in the opacity layer allows for effective concealment of the underlying color when the laminated sheet is attached to the substrate. On the other hand, decreasing the content of the white pigment in the opacity layer effectively reduces the unnatural appearance when the laminated sheet is attached to the skin.

[0037] Examples of resin materials include (meth)acrylic resins, polyolefins, styrene resins, vinyl resins such as ethylene-vinyl acetate copolymers and vinyl chloride-vinyl acetate copolymers, polyesters, polyamides, imide resins, cellulose resins, polyol resins, polycarbonates, and ionomer resins. The concealing layer may contain one or more resin materials.

[0038] The opacity layer preferably contains either (meth)acrylic resin or polyol resin, or both, as the main resin material. This improves the dispersion stability of the white pigment in the opacity layer forming coating liquid used to form the opacity layer, and suppresses the occurrence of coating defects. The main resin material refers to a resin material that accounts for 70 parts by mass or more of the total amount of resin material contained in the opacity layer, per 100 parts by mass.

[0039] The concealing layer preferably contains vinyl resin as a resin material, and more preferably contains a vinyl chloride-vinyl acetate copolymer. This improves the adhesion of the concealing layer to the substrate layer when it is transferred to the substrate layer for formation. The vinyl resin content in the concealing layer is preferably 0.3% by mass or more, more preferably 0.5% by mass or more, preferably 10% by mass or less, and more preferably 5% by mass or less. For example, the vinyl resin content in the concealing layer is 0.3% by mass or more and 10% by mass or less. When the vinyl resin content in the concealing layer is within the above range, the adhesion of the concealing layer to the substrate layer can be further improved while maintaining the heat transferability of the concealing layer.

[0040] The concealing layer preferably contains polyester. This improves the adhesion of the concealing layer to the substrate layer. The polyester content in the concealing layer is preferably 0.03% by mass or more, more preferably 0.1% by mass or more, preferably 1% by mass or less, and more preferably 0.95% by mass or less. For example, the polyester content in the concealing layer is 0.03% by mass or more and 1% by mass or less. When the polyester content in the concealing layer is within the above range, the adhesion of the concealing layer to the substrate layer can be further improved while maintaining the heat transferability of the concealing layer.

[0041] The content of the resin material in the opacity layer is preferably 10% by mass or more, more preferably 15% by mass or more, preferably 70% by mass or less, and more preferably 50% by mass or less. For example, the content of the resin material in the opacity layer is 10% by mass or more and 70% by mass or less. When the content of the resin material in the opacity layer is within the above range, the re-aggregation of the white pigment in the opacity layer can be prevented, and high opacity can be obtained.

[0042] The concealing layer may contain additives. Examples of additives include fillers, plasticizers, antistatic agents, UV absorbers, mold release agents, and dispersants. The concealing layer may contain one or more additives.

[0043] The thickness of the concealing layer is preferably 0.6 μm or more, more preferably 0.8 μm or more, even more preferably 1.0 μm or more, preferably 6 μm or less, more preferably 5 μm or less, and even more preferably 4 μm or less. For example, the thickness of the concealing layer is 0.6 μm or more and 6 μm or less. Increasing the thickness of the concealing layer allows the underlying color to be concealed when the laminated sheet is attached to the substrate. On the other hand, decreasing the thickness of the concealing layer effectively reduces the user's discomfort when the laminated sheet is attached.

[0044] The opacity layer can be formed, for example, by dispersing or dissolving the above-mentioned components in a suitable solvent to obtain a coating solution, which is then applied and dried onto any layer provided on the substrate of the substrate layer or transfer sheet using the above-mentioned known coating method.

[0045] (Adhesive layer) The laminated sheet of the present disclosure may further include an adhesive layer in the resin layer. In one embodiment, the laminated sheet may have an adhesive layer between the substrate layer and the opacity layer. In this case, the adhesion between the substrate layer and the opacity layer when the opacity layer provided on the transfer sheet is transferred to the substrate layer can be further improved.

[0046] The adhesive layer preferably contains a resin material. Examples of resin materials include (meth)acrylic resin, vinyl resin, polyolefin, polyester, polyurethane, epoxy resin, urea resin, melamine resin, and phenolic resin. The adhesive layer may contain one or more resin materials.

[0047] The resin material content in the adhesive layer is preferably 70% by mass or more, more preferably 80% by mass or less, and preferably 100% by mass or less. For example, the resin material content in the adhesive layer is 70% by mass or more and 100% by mass or less.

[0048] The adhesive layer may be a layer of resin material cured with a curing agent. Examples of curing agents include isocyanate compounds, aliphatic amines, cyclic aliphatic amines, aromatic amines, and acid anhydrides.

[0049] The thickness of the adhesive layer is preferably 0.1 μm or more, more preferably 0.5 μm or more, preferably 10 μm or less, and more preferably 2 μm or less. For example, the thickness of the adhesive layer is 0.1 μm or more and 10 μm or less.

[0050] The adhesive layer can be formed, for example, by applying and drying a coating solution obtained by dispersing or dissolving the above-mentioned components in a suitable solvent onto the opacity layer using the known coating method described above.

[0051] (Receiving layer) The laminated sheet of the present disclosure may further include a receiving layer in the resin layer. In one embodiment, the laminated sheet may have an adhesive layer, a substrate layer, and a receiving layer in this order in the thickness direction.

[0052] The receiving layer is a layer for receiving dyes and other substances that transfer from the heat transfer sheet. For example, when forming an image using a printer, the image may be formed on a receiving layer that has been prepared in advance on the substrate layer, or the image may be formed on a receiving layer that has been prepared on the transfer sheet, and then the substrate layer may be transferred via the opacity layer. The image may be, for example, an image used to match the color tone of the laminated sheet to a desired color (e.g., skin tone).

[0053] For example, a resin material can be used as the material constituting the receiving layer. Examples of resin materials include polyolefins, vinyl resins, styrene resins, acrylic resins, polyesters, polyamides, polyimides, polyurethanes, polycarbonates, cellulose resins, and ionomer resins. Examples of polyolefins include polyethylene and polypropylene. Examples of vinyl resins include polyvinyl chloride, polyvinyl acetate, and vinyl chloride-vinyl acetate copolymers. Examples of polyesters include polyethylene terephthalate and polyethylene naphthalate. Vinyl resins are preferred as the resin material constituting the receiving layer, and vinyl chloride-vinyl acetate copolymers are more preferred.

[0054] The resin material content in the receiving layer is preferably 70% by mass or more, more preferably 80% by mass or more, preferably 99% by mass or less, and more preferably 98% by mass or less, relative to the total mass of the receiving layer. The resin material content in the receiving layer is, for example, 70% by mass or more and 99% by mass or less, relative to the total mass of the receiving layer. This allows for sufficient durability to be imparted to the receiving layer, for example.

[0055] The receiving layer may contain additives. Examples of additives include UV absorbers, light stabilizers, antioxidants, colorants, fillers, and release agents.

[0056] The additive content in the receiving layer is preferably 1% by mass or more, more preferably 2% by mass or more, preferably 30% by mass or less, and more preferably 20% by mass or less, relative to the total mass of the receiving layer. For example, the additive content in the receiving layer is 1% by mass or more and 30% by mass or less.

[0057] The thickness of the receptive layer is preferably 0.3 μm or more, more preferably 0.5 μm or more, even more preferably 0.8 μm or more, preferably 5.0 μm or less, more preferably 3.0 μm or less, and even more preferably 2.0 μm or less. For example, the thickness of the receptive layer is 0.3 μm or more and 5.0 μm or less. When the thickness of the receptive layer is within the above range, sufficient print density can be obtained, and the laminated sheet has excellent conformability when attached to the skin, resulting in a sense of unity with the skin.

[0058] When a receiving layer is provided on the substrate layer in advance, the substrate layer may melt, be damaged, altered, or deformed by the solvent contained in the coating liquid during the process of applying and drying the coating liquid for the receiving layer on the substrate layer. In this case, it is preferable to transfer the receiving layer onto the substrate layer by thermal transfer. The receiving layer may be provided on the substrate layer in advance, or it may be provided on the substrate layer by thermal transfer during image formation.

[0059] (Protective layer) The laminated sheet of the present disclosure may further include a protective layer in the resin layer. In one embodiment, the laminated sheet may comprise an adhesive layer, a substrate layer, a concealing layer, a receiving layer and a protective layer in this order, or an adhesive layer, a substrate layer, a concealing layer, a receiving layer on which an image is formed and a protective layer in this order.

[0060] For example, resin materials can be used as the material constituting the protective layer. Examples of resin materials include polyester, polyamide, polyurethane, polycarbonate, vinyl resin, styrene resin, acrylic resin, acrylic polyol resin, cellulose resin, phenoxy resin, epoxy resin, silicone-modified resins of these resins, ultraviolet-absorbing resins, and ionizing radiation-curing resins.

[0061] Examples of polyesters include polyethylene terephthalate and polyethylene naphthalate. Examples of vinyl resins include vinyl chloride-vinyl acetate copolymer, polyvinyl chloride, polyvinyl acetate, polyvinyl alcohol, polyvinyl butyral, polyvinyl acetal, and polyvinylpyrrolidone. Examples of cellulose resins include ethylcellulose, hydroxyethylcellulose, ethylhydroxycellulose, methylcellulose, and cellulose acetate.

[0062] Examples of ionizing radiation-curable resins include resins obtained by crosslinking and curing radical polymers or radical polymerizable oligomers by irradiation with ionizing radiation. Specifically, these include resins obtained by adding a photopolymerization initiator as needed to a radical polymer or radical polymerizable oligomer and polymerizing and crosslinking it by electron beam or ultraviolet irradiation.

[0063] The resin material content in the protective layer is preferably 80% by mass or more, more preferably 85% by mass or more, preferably 99% by mass or less, and more preferably 98% by mass or less, relative to the total mass of the protective layer. For example, the resin material content in the protective layer is 80% by mass or more and 99% by mass or less. By having the resin material content in the protective layer within the above range, for example, sufficient durability can be provided to the protective layer.

[0064] The protective layer may contain additives. Examples of additives include UV absorbers, light stabilizers, antioxidants, colorants, fillers, and release agents. The protective layer may also contain colorants as needed. The protective layer may contain colorants to match the color tone of the laminated sheet to a desired color (e.g., skin tone). Examples of colorants include pigments and dyes.

[0065] The additive content in the protective layer is preferably 1% by mass or more, more preferably 2% by mass or more, preferably 20% by mass or less, and more preferably 15% by mass or less, relative to the total mass of the protective layer. For example, the additive content in the protective layer is 1% by mass or more and 20% by mass or less.

[0066] The thickness of the protective layer is preferably 0.1 μm or more, more preferably 0.5 μm or more, even more preferably 1 μm or more, preferably 20 μm or less, more preferably 10 μm or less, and even more preferably 5 μm or less. Such a protective layer can, for example, provide sufficient protective function to the laminated sheet. The thickness of the protective layer is, for example, 0.1 μm or more and 20 μm or less.

[0067] The protective layer can be formed, for example, by applying a coating liquid containing the above-mentioned material to a receiving layer or the like using known means such as roll coating, reverse roll coating, gravure coating, reverse gravure coating, bar coating, and rod coating, and then drying it.

[0068] The protective layer can be formed, for example, by preparing a thermal transfer sheet equipped with a protective layer, placing the thermal transfer sheet on a substrate film or the like corresponding to the substrate layer, and transferring the protective layer onto the receiving layer or the receiving layer on which the image is formed by a thermal transfer process.

[0069] <Adhesive Layer> The laminated sheet of this disclosure comprises an adhesive layer. The adhesive layer is formed using, for example, an adhesive. The adhesive, also known as a pressure-sensitive adhesive, is a material that is adhesive at room temperature and can adhere to an object when pressure is applied. For example, even when an object attached to the adhesive layer is peeled off, the adhesive layer retains practical adhesive strength.

[0070] Examples of adhesives include acrylic adhesives, urethane adhesives, silicone adhesives, rubber adhesives, vinyl alkyl ether adhesives, polyester adhesives, polyamide adhesives, and fluorine-based adhesives. The adhesive may contain a solvent. As a solvent, for example, either water-based or solvent-based solvents can be used. For medical use, it is preferable to select an adhesive that causes less skin irritation and skin rash, for example, acrylic adhesives and urethane adhesives are preferred.

[0071] The adhesive layer may contain additives. Examples of additives include UV absorbers, light stabilizers, antioxidants, colorants, fillers, and release agents. The adhesive layer may also contain colorants as needed. The adhesive layer may contain colorants to match the color tone of the laminated sheet to a desired color, such as skin tone. Examples of colorants include pigments and dyes. The adhesive layer may also contain the white pigments mentioned above. This may give the adhesive layer opacity.

[0072] The adhesive strength of the adhesive layer is preferably 5000 gf / 50 mm or less, more preferably 100 gf / 50 mm or more and 5000 gf / 50 mm or less. If the adhesive strength is 5000 gf / 50 mm or less, for example, there is little risk of damaging the adherend (especially human or animal skin) when the sheet is misapplied or when it is peeled off during replacement. If the adhesive strength is 100 gf / 50 mm or more, for example, adhesive strength to the adherend (especially human or animal skin) can be ensured, and peeling of the sheet due to skin perspiration or movement can be suppressed.

[0073] The thickness of the adhesive layer is preferably 3 μm or more, more preferably 5 μm or more, preferably 40 μm or less, and more preferably 30 μm or less. For example, the thickness of the adhesive layer is 3 μm or more and 40 μm or less.

[0074] (Release Sheet) The laminated sheet of the present disclosure may include a release sheet. In one embodiment, the laminated sheet may comprise a release sheet, an adhesive layer, and a resin layer in that order.

[0075] Examples of release sheets include release paper with at least one side of a paper substrate treated for release, and resin films with at least one side of a resin film treated for release. Examples of release treatments include release treatments using release agents such as silicone resin-based release agents, alkyd resin-based release agents, long-chain alkyl compound-based release agents, and fluororesin-based release agents. Examples of resin films include resin films formed from resin materials such as polyolefins, vinyl resins, styrene resins, acrylic resins, fluororesins, polyesters, and polyamides.

[0076] The thickness of the release sheet is preferably 50 μm or more, more preferably 100 μm or more, and preferably 300 μm or less, more preferably 200 μm or less. The thickness of the release sheet is, for example, 50 μm or more and 300 μm or less.

[0077] (Protective sheet) The laminated sheet of the present disclosure may further include a protective sheet detachably provided on the resin layer. Examples of the protective sheet include a low-density polyethylene (LDPE) sheet and a polypropylene (PP) sheet. The protective sheet may be provided with, for example, a weak adhesive layer. For forming the weak adhesive layer, an acrylic-based weak adhesive and a urethane-based weak adhesive can be used. The thickness of the protective sheet is, for example, 10 μm or more and 200 μm or less.

[0078] [Laminated sheet] In the laminated sheet of the present disclosure, using a variable-angle photometer, visible light is incident on one surface of the resin layer described above at -45° with respect to the normal direction of the resin layer, and the reflection intensity I measured from the surface side at a light-receiving angle of 0° ０° and the reflection intensity I at a light-receiving angle of 45° ４５° The ratio (I ０° / I ４５° ) is preferably 0.6 or more and 1.0 or less. When the ratio of the reflection intensity of the laminated sheet (I ０° / I ４５° ) is 0.6 or more, when the laminated sheet is attached to the skin as a skin design sheet, the appearance becomes closer to the texture of the skin, so a natural appearance can be achieved. Further, when the ratio (I ０° / I ４５° ) is 0.7 or more, the shiny feeling can be suppressed, so a more natural appearance can be achieved when the laminated sheet is attached to the skin as a skin design sheet.

[0079] The variable-angle photometer is not particularly limited, and commercially available products (for example, the variable-angle photometer (goniophotometer) GP-700 manufactured by Murakami Color Technology Laboratory) can be applied.

[0080] In the laminated sheet of the present disclosure, the reflection intensity I at a light-receiving angle of 0° ０° and the reflection intensity I at a light-receiving angle of 45° ４５°The measurement is performed from one surface side of the resin layer, as described above. Here, the laminated sheet of this disclosure has an adhesive layer and a resin layer laminated together, and of the pair of surfaces in the thickness direction of the resin layer, the adhesive layer is provided on one surface, so the reflection intensity is measured from the surface that does not have the adhesive layer. Reflectance I at a light receiving angle of 0° ０° , and the reflection intensity I at a light receiving angle of 45° ４５° The specific measurement conditions and methods for measuring [the value] will be described in detail in the following examples.

[0081] The above reflectance ratio (I ０° / I ４５° This can be adjusted by methods such as adjusting the surface roughness of a surface layer located on one surface of the resin layer, adding a material with high reflectivity to the surface layer, or adding multiple materials with different refractive indices to the surface layer.

[0082] For example, as a method of adjusting the reflectance ratio by controlling the surface roughness of the surface layer, if the surface of the surface layer is smooth, the reflectance I at a light receiving angle of 45° ４５° It becomes stronger, ０° / I ４５° It becomes smaller. On the other hand, if the surface roughness of the surface layer is large, the reflectance I at a light receiving angle of 45° ４５° It weakens, ０° / I ４５° The reflection intensity ratio I becomes larger. ０° / I ４５° This makes it easier to adjust it within a predetermined range.

[0083] Furthermore, it is preferable that the laminated sheet of this disclosure has an 85-degree specular gloss of 0% or more and 40% or less, measured from the surface side (the side without the adhesive layer) of the resin layer of the laminated sheet in accordance with the 85-degree specular gloss measurement method described in JIS Z8741:1997. When the 85-degree specular gloss is 0% or more and 40% or less, the glossy appearance can be suppressed, resulting in a more natural appearance when the laminated sheet is applied to the skin as a skin-like design sheet. The value of the 85-degree specular gloss can be adjusted by selecting the material of the surface layer located on one surface of the resin layer (the surface on the side without the adhesive layer), the surface treatment of the surface layer, and the surface roughness of the surface layer.

[0084] Furthermore, the laminated sheet of this disclosure has an arithmetic mean curvature Spc of the peak as defined in ISO 25178-2:2012 on the surface of the resin layer (the surface on which the adhesive layer is not provided), preferably 23 mm －１ Above, a comfortable 25 mm －１ More preferably 30 mm －１ The above, preferably 200 mm －１ More preferably 100 mm －１ The following applies: The arithmetic mean curvature Spc is, for example, 23 mm. －１ 200mm or more －１ The following applies: The arithmetic mean curvature Spc is 23 mm. －１ 200mm or more －１ The following conditions ensure that the surface shape is not crushed when rubbed with a finger, and the glossy appearance is not lost. Also, because the sebum from the finger does not easily get into the surface irregularities when rubbed with a finger, the glossy appearance is not lost. As a result, a moderate matte finish similar to the glossiness of skin can be achieved, and the glossiness does not worsen even after rubbing with a finger, resulting in a more natural appearance when the laminated sheet is applied to the skin as a skin-like design sheet. The value of the arithmetic mean curvature Spc of the peaks on the surface of the resin layer can be adjusted by selecting the material of the surface layer located on one surface of the resin layer (the surface on which the adhesive layer is not provided), the surface treatment of the surface layer, and the surface roughness of the surface layer.

[0085] In the laminated sheet of this disclosure, the arithmetic mean curvature Spc of the peaks on the surface of the resin layer is measured using Surfcom 1400G (manufactured by Tokyo Seimitsu Co., Ltd.).

[0086] The total thickness of the laminated sheet of this disclosure, in an embodiment that does not include the release sheet, is preferably 1.0 μm or more, more preferably 4.0 μm or more, and even more preferably 6.0 μm or more. Alternatively, the total thickness of the laminated sheet is preferably 150 μm or less, more preferably 100 μm or less, and even more preferably 15 μm or less. For example, the total thickness of the laminated sheet is 1.0 μm or more and 150 μm or less. When the total thickness of the laminated sheet is within the above range, the elongation rate of the laminated sheet is within an appropriate range, and when the laminated sheet is applied to the skin as a skin-like design sheet, it exhibits excellent conformability to the skin.

[0087] [Applications of Laminated Sheets] An example of an application of the laminated sheet of this disclosure is described below. In one embodiment, the laminated sheet can be used as a skin-pattern sheet (skin sheet) for application to the skin by forming an image on the receiving layer. Examples of skin-pattern sheets include skin-concealing sheets, tattoo stickers, and body paint stickers.

[0088] In one embodiment, a textured sheet can be produced from a laminated sheet. For example, multiple textured sheets may be produced from a laminated sheet. For example, a roll of laminated sheet may be cut to produce individual laminated sheets in product form.

[0089] When the laminated sheet of this disclosure is used as a skin-like design sheet, a natural appearance can be achieved by applying the adhesive layer of the laminated sheet so that it comes into contact with the user's skin.

[0090] [Method for Manufacturing a Skin-Shaped Sheet] The skin-shaped sheet of this disclosure can be manufactured, for example, by a thermal transfer process. The method for manufacturing a laminated sheet in the first embodiment of this disclosure comprises the steps of: preparing a laminated sheet comprising an adhesive layer and a resin layer including at least a substrate layer; and using a thermal transfer printer, heating a thermal transfer sheet provided with a dye layer to transfer the dye from the dye layer to the resin layer to form an image.

[0091] In the thermal transfer process, first, a long base film corresponding to the laminated sheet of this disclosure is prepared. The base film may be provided with a release sheet. This base film and the thermal transfer sheet are set in a thermal transfer printer.

[0092] A thermal transfer sheet comprises a substrate and a transfer-type receiving layer, a dye layer, and optionally a protective layer, arranged sequentially on one surface of the substrate. The receiving layer is a transparent layer that receives the dye migrated from the thermal transfer sheet. Examples of dye layers include a yellow dye layer, a magenta dye layer, and a cyan dye layer. The dye layer contains a binder resin and a sublimable dye. Known materials can be used for the yellow dye layer, magenta dye layer, and cyan dye layer. Details of the receiving layer and protective layer are as described above. When printing directly onto the substrate layer or when the receiving layer is pre-provided on the substrate film, it is not necessary for the thermal transfer sheet to have a receiving layer or to perform the transfer of the receiving layer as described below.

[0093] The thermal head and platen roll of the thermal transfer printer sandwich the base film and the thermal transfer sheet, and heat the thermal transfer sheet. The thermal head heats the transfer-type receiving layer and transfers the receiving layer onto the base film. Next, the thermal head heats the yellow dye layer, magenta dye layer, and cyan dye layer in sequence, based on data such as a skin pattern sheet, and transfers the dyes to the receiving layer transferred onto the base film to form an image. This allows any pattern to be printed on the laminated sheet. If necessary, the protective layer of the thermal transfer sheet is then heated and transferred onto the receiving layer on which the image has been formed.

[0094] If necessary, the surface of the base film may be roughened. Specifically, a embossed or other shaping treatment may be applied to the surface of the base film to form an uneven surface. When embossing, for example, an embossing plate or a shaping sheet can be used. The embossing plate and shaping sheet can be used without particular limitations. The surface shape of the embossing plate and shaping sheet and the surface shape formed by them have substantially opposite shapes.

[0095] A long, laminated sheet is cut parallel to the width direction of the laminated sheet using a cutter in a thermal transfer printer to obtain a single-sheet laminated sheet. A protective sheet may be attached to the surface resin layer of the single-sheet laminated sheet as needed.

[0096] Next, the laminated sheet is cut into the shape of the product form of the textured sheet using a known cutting device. For example, when the laminated sheet is viewed from above, it is punched out in a circular shape. The shape is not particularly limited.

[0097] As described above, a textured sheet having the desired shape can be produced. In the above method, the adhesive layer may be provided on the base film after the heat transfer process. In this case, it is preferable to provide a release sheet after the formation of the adhesive layer.

[0098] Although a method for manufacturing a skin-patterned sheet by a thermal transfer process has been described, the method for manufacturing a skin-patterned sheet described herein is not limited to the above method. For example, a skin-patterned sheet may be manufactured by sequentially forming each layer of a laminated sheet.

[0099] Furthermore, although the present disclosure describes a method for manufacturing a textured sheet using a thermal transfer printer, it is not limited to this. Thermal transfer printers, inkjet printers, and the like can be used as printers. Among these, thermal transfer printers are preferred. As a thermal transfer printer, a dye-sublimation thermal transfer printer with excellent color reproduction and gradation is preferred.

[0100] <Second Embodiment> [Laminated Sheet] The laminated sheet of the second embodiment of the present disclosure comprises at least a protective sheet and a resin layer provided on the protective sheet. The laminated sheet of the second embodiment of the present disclosure may further comprise an adhesive layer and a release sheet on the surface of the resin layer opposite to the protective sheet. The laminated sheet may optionally comprise the protective sheet, resin layer, adhesive layer, and release sheet in this order in the thickness direction.

[0101] Hereinafter, a specific example of the laminated sheet of the second embodiment of this disclosure will be described with reference to the drawings. In one embodiment, as shown in Figure 10, the laminated sheet 51A may comprise a release sheet 10, an adhesive layer 20, a concealing layer 33, a receiving layer 32' on which an image is formed, a base layer 31, and a protective sheet 40, in this order in the thickness direction. In this example, the resin layer 30 has a structure in which the concealing layer 33, the receiving layer 32' on which an image is formed, and the base layer 31 are laminated. The surface of the resin layer 30 is either the surface on the base layer 31 side or the surface on the concealing layer 33 side.

[0102] In one embodiment, if the substrate layer has dye-receiving properties, the laminated sheet may omit the image-receiving layer. In this case, the laminated sheet may comprise a release sheet, an adhesive layer, an opacity layer, a substrate layer, and a protective sheet in this order in the thickness direction. In this example, the resin layer has a structure in which an opacity layer and a substrate layer are laminated. The surface of the resin layer is either the surface on the substrate layer side or the surface on the opacity layer side.

[0103] In one embodiment, as shown in Figure 11, the laminated sheet 51B may comprise a release sheet 10, an adhesive layer 20, a protective layer 34, a receiving layer 32' on which an image is formed, a base layer 31, and a protective sheet 40, in this order in the thickness direction. In this example, the resin layer 30 has a structure in which the protective layer 34, the receiving layer 32' on which an image is formed, and the base layer 31 are laminated together. The surface of the resin layer 30 is either the surface on the base layer 31 side or the surface on the protective layer 34 side.

[0104] The laminated sheet of this disclosure was measured using a variable-angle photometer, after peeling off the protective sheet, by irradiating the surface of the resin layer on the side from which the protective sheet was peeled off with visible light at an angle of -45° relative to the normal direction of the resin layer, and measuring the reflectance I at a light receiving angle of 0° from the surface side. ０° And, the reflection intensity I at a light receiving angle of 45° ４５° Ratio to (I ０° / I ４５° It is preferable that the ratio of the reflectance intensity of the laminated sheet (I ０° / I ４５°If the ratio (I) is 0.6 or higher, when the laminated sheet is applied to the skin as a skin-like design sheet, the appearance will be close to the texture of the skin, resulting in a natural appearance. Furthermore, if the ratio (I) is 0.6 or higher, ０° / I ４５° If the value is 0.7 or higher, the glossy appearance can be suppressed, resulting in a more natural appearance when the laminated sheet is applied to the skin as a skin-like design sheet.

[0105] [Applications of Laminated Sheets] An example of an application of the laminated sheet of the second embodiment of this disclosure will be described below. In one embodiment, the laminated sheet can be used as a skin-pattern sheet for application to the skin by forming an image directly on the substrate layer or by forming an image on a receiving layer provided in the resin layer.

[0106] [Method for Manufacturing a Skin-Shaped Sheet] The method for manufacturing a laminated sheet in the second embodiment of the present disclosure comprises at least the following first to fourth steps: - A step of preparing a first laminated sheet having a protective sheet and a resin layer provided on the protective sheet (first step) - A step of heating a heat transfer sheet having a dye layer using a heat transfer printer to transfer dye from the dye layer to the resin layer and form an image (second step) - A step of preparing a second laminated sheet having a release sheet and an adhesive layer provided on the release sheet (third step) - A step of manufacturing a laminated sheet by bonding the adhesive layer of the second laminated sheet and the image-forming surface of the first laminated sheet (fourth step) Each step will be described in detail below.

[0107] (First Step) In the first step, a first laminated sheet is prepared, which has a protective sheet and a resin layer provided on the protective sheet. Figure 12 is a cross-sectional view of a first laminated sheet 60 used in the manufacture of a textured sheet according to the second embodiment of the present disclosure. The first laminated sheet 60 is in the shape of a long strip and comprises a protective sheet 40, a base layer 31, and a receiving layer 32 laminated in order. The first laminated sheet 60 is wound into a roll to produce a laminated sheet roll.

[0108] (Second Step) Next, in the second step, the laminated sheet roll is set in a thermal transfer printer (not shown). The thermal transfer printer is equipped with a thermal head and a rotatable platen roll. The thermal head and platen roll sandwich the first laminated sheet 60 and the thermal transfer sheet and heat the thermal transfer sheet.

[0109] For example, if the thermal transfer sheet has yellow, magenta, and cyan dye layers and an opacity layer arranged in sequence across the surface, first, the thermal head of the thermal transfer printer heats the yellow, magenta, and cyan dye layers in sequence based on the data of the skin texture sheet, transferring the dyes to the receiving layer 32 of the first laminated sheet 60 to form the image of the skin texture sheet.

[0110] Next, the thermal head heats the opacity layer of the heat transfer sheet and transfers the opacity layer 33 onto the receiving layer 32' on which the image has been formed, as shown in Figure 13.

[0111] (Third step) Next, in the third step, a second laminated sheet 70 is prepared, in which a release sheet 10, an adhesive layer 20, and a cover sheet 71 are laminated in order, as shown in Figure 14.

[0112] (Fourth step) Next, in the fourth step, the cover sheet 71 of the second laminated sheet 70 is peeled off to expose the adhesive layer 20, and as shown in Figure 15, the adhesive layer 20 and the concealing layer 33 on the receiving layer 32' on which the image is formed are bonded together. Bonding may be done using a bonding device or by hand.

[0113] As a result, as shown in Figure 10, a textured sheet 51A is produced in which a release sheet 10, an adhesive layer 20, an opacity layer 33, a receiving layer 32' on which an image is formed, a base layer 31, and a protective sheet 40 are laminated in this order in the thickness direction. The textured sheet 51A may be processed into a desired shape using a cutter or a known cutting device. Alternatively, a half-cut of a desired shape may be formed from the release sheet 10 side.

[0114] When using the skin-like design sheet 51A, the user first peels the release sheet 10 from the adhesive layer 20 to expose the surface of the adhesive layer 20. Next, the user applies the skin-like design sheet 51A to the skin using the adhesive layer 20. Then, the user peels the protective sheet 40 from the base layer 31.

[0115] Thus, according to the second embodiment of this disclosure, the color of the skin-like design sheet matches the user's skin tone, suppressing any discomfort when the skin-like design sheet is applied to the skin and resulting in a natural finish.

[0116] Furthermore, according to the second embodiment, as described above, the first laminated sheet 60 set in the thermal transfer printer does not have an adhesive layer, which suppresses the occurrence of transport failures and jams in the thermal transfer printer and enables stable image formation.

[0117] Furthermore, according to the second embodiment, the opacity layer in the thermal transfer sheet may be replaced with a protective layer. In this case, the thermal transfer printer transfers the protective layer 34 onto the receiving layer 32' on which the image of the textured sheet is formed, and as shown in Figure 11, a textured sheet 51B is produced in which the release sheet 10, adhesive layer 20, protective layer 2, receiving layer 32' on which the image is formed, base layer 31, and protective sheet 40 are laminated in this order in the thickness direction.

[0118] Alternatively, instead of providing an opacity layer on the heat transfer sheet, a white pigment may be added to the protective layer 32 or the adhesive layer 20 so that the protective layer 32 or the adhesive layer 20 has opacity.

[0119] Furthermore, in the second embodiment, a first laminated sheet having a resin layer without a receiving layer may be used, and the image of the skin pattern sheet may be formed on the substrate layer from the thermal transfer sheet.

[0120] This disclosure relates, for example, to the following [1] to

[14] . [1] A laminated sheet comprising an adhesive layer and a resin layer including at least a base layer, wherein the reflectance intensity I at a light receiving angle of 0° is measured from the surface side by irradiating one surface of the resin layer with visible light at an angle of -45° with respect to the normal direction of the resin layer using a bending-angle photometer. ０° And, the reflection intensity I at a light receiving angle of 45° ４５° Ratio to (I０° / I ４５° [1] A laminated sheet wherein the 85-degree specular gloss measured from the surface side of the resin layer in accordance with the 85-degree specular gloss measurement method described in Method 1 of JIS Z8741:1997 is 0% or more and 40% or less. [2] The laminated sheet according to [1]. [3] On the surface of the resin layer, the arithmetic mean curvature Spc of the peak as defined in ISO 25178-2:2012 is 23 mm －１ 200mm or more －１ The laminated sheet according to [1] or [2], which is as follows: [4] The laminated sheet according to any one of [1] to [3], wherein the resin layer comprises one or more resin materials selected from the group consisting of polyvinyl chloride, polyurethane, and polyolefin. [5] The laminated sheet according to any one of [1] to [4], wherein the resin layer further comprises an opacity layer. [6] The laminated sheet according to [5], wherein the opacity layer comprises a white pigment. [7] The laminated sheet according to any one of [1] to [6], wherein the resin layer further comprises a receiving layer. [8] The laminated sheet according to any one of [1] to [7], wherein the resin layer further comprises a protective layer. [9] The laminated sheet according to any one of [1] to [8], wherein the thickness is 4.0 μm or more and 150 μm or less.

[10] The laminated sheet according to any one of [1] to [9], further comprising a release sheet on the side of the adhesive layer opposite to the resin layer.

[11] A laminated sheet having a protective sheet and a resin layer provided on the protective sheet, wherein after peeling off the protective sheet, a variable-angle photometer is used to irradiate the resin layer with visible light at an angle of -45° relative to the normal direction of the resin layer from the surface on the protective sheet side, and the reflectance I at a light receiving angle of 0° is measured from the surface side. ０° And, the reflection intensity I at a light receiving angle of 45° ４５° Ratio to (I ０° / I ４５°

[12] A laminated sheet having a ratio of 0.6 to 1.0.

[13] A method for manufacturing a textured sheet, comprising the steps of: preparing a laminated sheet comprising an adhesive layer and a resin layer including at least a base layer; and using a thermal transfer printer to heat a thermal transfer sheet having a dye layer, transferring the dye from the dye layer to the resin layer to form an image.

[14] A method for manufacturing a textured sheet, comprising the steps of: preparing a first laminated sheet having a protective sheet and a resin layer provided on the protective sheet; using a thermal transfer printer to heat a thermal transfer sheet having a dye layer, transferring the dye from the dye layer to the resin layer to form an image; preparing a second laminated sheet having a release sheet and an adhesive layer provided on the release sheet; and manufacturing a laminated sheet by bonding the adhesive layer of the second laminated sheet to the image-forming surface of the first laminated sheet.

[0121] The laminated sheets of this disclosure will be described in more detail with reference to examples, but the laminated sheets of this disclosure are not limited to these examples. In the following description, "parts" means "parts by mass".

[0122] [Example 1] A polyvinyl chloride film (70 μm thick) was prepared as the base layer. An adhesive layer with a thickness of 10 μm was formed on one side of the base layer using an acrylic adhesive (SK Dyne MD-1, manufactured by Soken Chemical Co., Ltd.), and it was laminated onto release paper (SLB-110WT, 170 μm thick, manufactured by Sumika Kako Paper Co., Ltd.). This was then layered with matte film 1 (matte PET film adjusted to surface roughness Sa 0.71, Ssk 0.65, Sku 3.26), and heated at 150°C using a laminating machine "Fujipla LPD3226N" (Hisago Co., Ltd.) to form irregularities on the surface of the base layer. In this way, a laminated sheet was produced with a layer structure of adhesive layer (10 μm) / resin layer (base layer), a total thickness of 80 μm excluding the release paper, and an elongation rate of 260%.

[0123] <Elongation> The elongation of the base layer (stretchable base material) is the elongation obtained by the test method in accordance with JIS K 7127:1999. The elongation is expressed by the following formula (1). Elongation (%) = 100 × (L - L0) / L0 ... (1) In formula (1), L is the length at which the stretchable base material breaks when it is pulled at a speed of 200 mm / min using a tensile testing machine. In formula (1), L0 is the length of the stretchable base material before it is pulled by the tensile testing machine.

[0124] The tensile test was conducted using a small benchtop testing machine (EZ Test series, manufactured by Shimadzu Corporation) as the measuring instrument, and the average value obtained from three measurements was used as the measured value. (Measurement conditions) ・Measurement temperature: 25℃ ・Test piece: Type 2, width 10 mm ・Initial chuck spacing: 50 mm ・Test speed: 100 mm / min, 200 mm / min ・500N load cell used

[0125] [Example 2] A laminated sheet with a total thickness of 80 μm and an elongation of 260% was prepared in the same manner as in Example 1, except that the base layer was changed to matte film 2 (matte PET film adjusted to surface roughness Sa 0.97, Ssk 0.17, Sku 2.87).

[0126] [Example 3] A polyurethane film (30 μm thick) was prepared as the base layer. A white opacity layer (2 μm thick) was formed on this base layer using the following opacity layer forming coating liquid 1, and then a receptacle layer (2 μm thick) was formed using the receptacle layer forming coating liquid to create a resin layer. An adhesive layer with a thickness of 10 μm was formed on the surface of the resin layer on the base layer side using an acrylic adhesive (SK Dyne MD-1, manufactured by Soken Chemical Co., Ltd.), and this was laminated onto release paper (SLB-110WT, 170 μm thick, manufactured by Sumika Kako Paper Co., Ltd.). This was then layered with a matte film 2 adjusted to a surface roughness of Sa 0.97, Ssk 0.17, and Sku 2.87, and heated at a temperature of 150°C using a laminating machine "Fujipla LPD3226N" (Hisago Co., Ltd.) to form irregularities on the surface. In this way, a laminated sheet was fabricated with a layer structure of adhesive layer (10 μm) / resin layer (base layer / concealing layer / receiving layer), with a total thickness of 44 μm and an elongation rate of 456%.

[0127] (Coating liquid for forming an opacity layer 1) • Titanium dioxide 58 parts (manufactured by Ishihara Sangyo Co., Ltd., R-780) • (Meth)acrylic resin 10.5 parts (manufactured by Mitsubishi Chemical Corporation, Dianaal® BR-87) • (Meth)acrylic resin 31.5 parts (manufactured by Mitsubishi Chemical Corporation, Dianaal® BR-85) • Methyl ethyl ketone (MEK) 100 parts • Toluene 100 parts

[0128] (Coating liquid for forming a receptive layer) (Coating liquid for forming a receptive layer) ・Vinyl chloride-vinyl acetate copolymer 12 parts by mass (manufactured by Nisshin Chemical Industry Co., Ltd., Solvine® C) ・Epoxy-modified silicone 0.8 parts by mass (manufactured by Shin-Etsu Chemical Co., Ltd., X-22-3000T) ・Amino-modified silicone 0.24 parts by mass (manufactured by Shin-Etsu Chemical Co., Ltd., X-22-1660B-3) ・Toluene 30 parts by mass・MEK 30 parts by mass

[0129] [Example 4] A polyvinyl chloride film (70 μm thick) was prepared as the base layer. An adhesive layer with a thickness of 10 μm was formed on one side of the base layer using an acrylic adhesive (SK Dyne MD-1, manufactured by Soken Chemical Co., Ltd.), and it was laminated onto release paper (SLB-110WT, 170 μm thick, manufactured by Sumika Kako Paper Co., Ltd.). The protective layer of a matte ink ribbon for the DS620 sublimation transfer photo printer, manufactured by Dai Nippon Printing Co., Ltd., was heat-transferred under the following conditions to produce a laminated sheet with a layer structure of adhesive layer (10 μm) / resin layer / protective layer, a total thickness of 82 μm, and an elongation rate of 260%.

[0130] (Transfer conditions) ・Thermal head: KGT-217-12MPL20 (manufactured by Kyocera Corporation) ・Average resistance of heating element: 3195Ω ・Print density in main scanning direction: 300dpi ・Print density in sub-scanning direction: 300dpi ・Applied power: 0.12W / dot ・1 line cycle: 5msec. ・Print start temperature: 40℃

[0131] [Example 5] A sheet consisting of a release liner, adhesive layer, base layer, opacity layer, and receiving layer was prepared using the method of Example 3, and a protective layer was formed using the method of Example 4. In this way, a laminated sheet was prepared with an adhesive layer (10 μm) / resin layer (base layer / opacity layer / receiving layer) / protective layer, with a total thickness of 44 μm and an elongation of 456%.

[0132] [Example 6] A laminated sheet with a total thickness of 23 μm and an elongation of 320% was prepared in the same manner as in Example 5, except that the thickness of the base layer was 7 μm.

[0133] [Example 7] A polyurethane film (30 μm thick) was prepared as the base layer. An adhesive layer with a thickness of 10 μm was formed on one side of the base layer using an acrylic adhesive (SK Dyne MD-1, manufactured by Soken Chemical Co., Ltd.), and it was laminated onto release paper (SLB-110WT, 170 μm thick, manufactured by Sumika Kako Paper Co., Ltd.). The thermal transfer sheet with the transfer receiving layer described below and the protective layer of a matte ink ribbon for the DS620 sublimation transfer type photoprinter manufactured by Dai Nippon Printing Co., Ltd. were thermally transferred under the transfer conditions described in Example 4, and a laminated sheet was produced with a layer structure of adhesive layer (10 μm) / resin layer (base layer / transfer receiving layer) / protective layer, with a total thickness of 44 μm and an elongation of 456%.

[0134] (Thermal transfer sheet with transfer receiving layer) A thermal transfer sheet was prepared on a 4.5 μm thick polyethylene terephthalate film (Toray Industries, Inc.) with a 2 μm thick transfer layer made of vinyl chloride-vinyl acetate copolymer (Nisshin Chemical Industry Co., Ltd., Solvine® CNL).

[0135] [Example 8] On top of the laminated sheet of Example 5, a synthetic leather release paper "DN-TP (registered trademark) UM-16" (Dai Nippon Printing Co., Ltd.) was placed, and the sheet was heated at a temperature of 150°C using a laminating machine "Fujipla LPD3226N" (Hisago Co., Ltd.) to create an uneven surface, resulting in a laminated sheet with a total thickness of 46 μm and an elongation rate of 456%.

[0136] [Example 9] On top of the laminated sheet of Example 7, a synthetic leather release paper "DN-TP (registered trademark) UM-16" (Dai Nippon Printing Co., Ltd.) was placed, and the sheet was heated at a temperature of 150°C using a laminating machine "Fujipla LPD3226N" (Hisago Co., Ltd.) to create a laminated sheet with a total thickness of 44 μm and an elongation rate of 456%.

[0137] [Example 10] A laminated sheet with an elongation of 502% and a total thickness of 64 μm was prepared in the same manner as in Example 9, except that the base layer was changed to a polyurethane film (thickness 50 μm).

[0138] [Example 11] A laminated sheet with an elongation rate of 260% and a total thickness of 84 μm was prepared in the same manner as in Example 9, except that the base layer was changed to a polyvinyl chloride film (thickness 70 μm).

[0139] [Example 12] A laminated sheet with a total thickness of 64 μm and an elongation of 123% was prepared in the same manner as in Example 9, except that the base layer was made 50 μm thick and the amount of white pigment added was adjusted to achieve an opacity of 96.8%.

[0140] [Comparative Example 1] A polyvinyl chloride film (70 μm thick) was prepared as the base layer. An adhesive layer with a thickness of 10 μm was formed on one side of the base layer using an acrylic adhesive (SK Dyne MD-1, manufactured by Soken Chemical Co., Ltd.), and this was laminated onto a release paper (SLB-110WT, 170 μm thick) to produce a laminated sheet with a total thickness of 80 μm and an elongation of 260%.

[0141] [Comparative Example 2] A laminated sheet with a total thickness of 64 μm and an elongation of 308% was prepared in the same manner as in Comparative Example 1, except that the base layer was changed to a polyvinyl chloride film (70 μm thick, manufactured by Ronseal Industries Co., Ltd.).

[0142] [Comparative Example 3] A laminated sheet with a total thickness of 46 μm and an elongation of 456% was prepared in the same manner as in Example 5, except that the protective layer was changed to the protective layer of a glossy ink ribbon for the DS620 sublimation transfer photoprinter manufactured by Dai Nippon Printing Co., Ltd.

[0143] [Comparative Example 4] A laminated sheet with a total thickness of 82 μm and an elongation of 260% was prepared in the same manner as in Comparative Example 3, except that the base layer was changed to a polyvinyl chloride film (thickness 70 μm).

[0144] [Comparative Example 5] A laminated sheet with a total thickness of 35 μm and an elongation of 18% was prepared in the same manner as in Comparative Example 3, except that the base layer was changed to polyethylene terephthalate film (Lumirror thickness 25 μm).

[0145] [Measurement Method] <Reflectance Ratio of Laminated Sheets> For the laminated sheets of Examples 1 to 12 and Comparative Examples 1 to 5, using the following apparatus and measurement conditions, visible light was incident on one surface of the resin layer (the surface without the adhesive layer) at -45° relative to the normal direction of the resin layer, and the reflectance I at a light reception angle of 0° was measured. ０° And, the reflection intensity I at a light receiving angle of 45° ４５° The values ​​were measured from the surface side of the resin layer (the side without the adhesive layer). From the obtained measurements, the reflectance I was calculated. ０° and reflectance I ４５° Ratio to (I ０° / I ４５° The result was calculated. The results are shown in Table 1.

[0146] (Equipment) - Variable angle photometer: Murakami Color Technology Laboratory Co., Ltd., Variable angle photometer (goniophotometer) GP-200 (Measurement conditions) - Light source: 12V, 50W halogen lamp - Iris diaphragm: 10.5 mm in diameter - Aperture diaphragm: 9.1 mm in diameter - Incident angle: 45°, 75°

[0147] Specifically, the measurement was performed according to the following procedure: [i] Sensitivity check: A standard black glass plate BK-7 with a refractive index of 1.518 was attached. Three light-reducing filters with values ​​of 1.0%, 10.0%, and 50.0% were used. The sensitivity was set to 950. The high-voltage adjustment knob was adjusted so that the display, which monitors the output signal, showed 123.

[0148] [ii] A standard black glass plate BK-7 with a refractive index of 1.518 was attached to the standard plate. Hereafter, this will be referred to as the standard black glass plate. When the standard black glass plate was measured at an incident angle of 45°, only specular reflected light around the receiving angle of 45° was detected. Therefore, the intensity of reflected light emitted from the surface of the standard black glass plate at angles from 30.0° to 60.0° was measured at 0.1° intervals. The intensity of reflected light from the standard black glass plate was measured before and after the measurement of the sample piece.

[0149] [iii] Preparation of the sample piece The laminated sheet was cut into a square of approximately 6 cm x 6 cm to make the sample piece. The sample piece was fixed to a black board of approximately 8 cm x 8 cm with double-sided tape, and the edges were further secured with black tape. The size of the sample piece and the black board do not have to be as described above, as long as the area of ​​the sample piece that is illuminated by light from the light source of the bending-angle photometer is contained within the sample piece. White Kent paper was used as a base for the sample piece and fixed to the black board with double-sided tape, and the edges were further secured with black tape.

[0150] [iv] The black plate on which the sample piece was fixed was fixed to the sample stage of the variable-angle photometer. Light from the light source was incident on the sample piece, and the light reflected by the surface of the sample piece was detected by the detector, and the intensity of the reflected light was measured. Hereinafter, the reflected light will also be referred to as reflected light. A dimming filter was selected to be attached to the light source so that the display, which is a monitor of the output signal, was approximately 20 to 180. Dimming filters of 1.0%, 10.0%, and 50.0% were used individually or in combination. The light receiving angle was set to -90.0° to 90.0°. By changing the angle of the detector, the intensity of the reflected light emitted from the surface of the sample piece at the set light receiving angle was measured at 0.1° intervals.

[0151] [v] Analysis: The maximum intensity of reflected light from a standard black glass plate at a light receiving angle of incidence of 45° is A ＭＡＸ A ＭＡＸ The light-receiving angle at A was set to 45.0°, and the light-receiving angle of the sample piece was corrected. For example, A ＭＡＸ If the light-receiving angle is 46.0°, the sample measurement angle is shifted by 1.0° increments. Specifically, the sample measurement angle of 46.0° is corrected to 45.0°, and the sample measurement angle of 47.0° is corrected to 46.0°.

[0152] [vi] Analysis: The intensity of reflected light from the standard black glass plate and the sample piece was corrected for the light-reducing filter. For example, when a combination of 10.0% and 50.0% light-reducing filters was used, the intensity of the reflected light was divided by 0.100 and then by 0.500 to obtain the corrected reflected light intensity. A after light-reducing filter correction ＭＡＸ to A ＭＡＸ－Ｓ The intensity of the reflected light from the sample piece after correcting the light receiving angle and the neutral density filter was set to I. Ｓ That's what I decided.

[0153] [vii] Analysis: I at normalized total light-receiving angle Ｓ A ＭＡＸ－Ｓ Divide by and multiply by 100 to get the normalized reflected light intensity I ＳＳ We obtained I with a light receiving angle of 45°. ＳＳ to I ４５° And, with a light receiving angle of 0°, Ｓ to I ０° That's what I decided.

[0154] [viiii] Analysis: The balance between specular reflection and diffusion I ０° to I ４５° Divide by the ratio of the reflectance at 0° to the reflectance at 45° (I ０° / I ４５° ) was obtained.

[0155] <85-degree specular gloss of laminated sheets> For the laminated sheets of Examples 1 to 12 and Comparative Examples 1 to 5, the 85-degree specular gloss was measured from the surface side of the resin layer (the side without the adhesive layer) of the laminated sheet, in accordance with the 85-degree specular gloss measurement method described in JIS Z8741. The results are shown in Table 1. (Measurement conditions) ・Apparatus: Gloss meter VG 2000 (manufactured by Nippon Denshoku Industries Ltd.) ・Measurement angle: 85 degrees

[0156] <Arithmetic Mean Curvature Spc of Peaks on the Resin Layer Surface of Laminated Sheets> For the laminated sheets of Examples 1 to 12 and Comparative Examples 1 to 5, the arithmetic mean curvature Spc was calculated in accordance with ISO 25178-2:2012, following the procedure below. The results are shown in Table 1. (Calculation Procedure) First, three-dimensional height data (z values) is recorded (acquisition of surface data). Next, local maximum points (peaks) on the surface are detected from the obtained three-dimensional height data (z values). Maximum points (peaks) are points that are higher than the surrounding points and are extracted based on certain thresholds or region conditions. Next, the principal curvature is calculated at each peak point in relation to the surrounding points. Finally, the Spc value is calculated by averaging the curvature values ​​of all detected peaks. (Measuring device) ・Surfcom 1400G (manufactured by Tokyo Seimitsu Co., Ltd.) <Measurement conditions> ・Roughness probe: Tip radius 2 μm ・Measurement range: 5 mm x 5 mm ・Measurement pitch (X): 2.443 μm ・Measurement pitch (Y): 24.88 μm ・Measurement speed: 0.600 mm / s ・Movement return speed: 1.500 mm / s ・Tilt correction: Yes ・λs filter: No ・λc filter: 0.8 mm

[0157] [Evaluation Method] The laminated sheets of Examples 1 to 12 and Comparative Examples 1 to 5 were evaluated as follows.

[0158] <Skin Texture> (Shine Evaluation 1) Five evaluators (two men (in their 20s and 60s), and three women (in their 20s, 30s, and 40s)) applied the laminated sheet to the back of their hands after peeling off the release sheet and attaching it to their skin. They performed a sensory evaluation and evaluated the "skin texture" according to the following evaluation criteria. The evaluation environment was a room at 23°C and 50% RH. (Evaluation Criteria) 4: All five judged that the appearance was natural compared to the skin and there was no shine. 3: Three to four judged that the appearance was natural compared to the skin and there was no shine. 2: Three or more judged that the appearance was slightly unnatural compared to the skin and there was a slight shine. 1: Three or more judged that the appearance was unnatural when attached to the skin and there was a shine.

[0159] (Shine Evaluation 2) The laminated sheet attached to the back of the hand in the above-mentioned "Shine Evaluation 1" was rubbed back and forth 30 times with a finger, and the "skin texture" of the laminated sheet after rubbing was evaluated by sensory evaluation according to the following evaluation criteria. (Evaluation Criteria) 4: All 5 people judged that it had a natural appearance compared to skin and was not shiny. 3: 3 to 4 people judged that it had a natural appearance compared to skin and was not shiny. 2: 3 or more people judged that it had a slightly unnatural appearance compared to skin and was somewhat shiny. 1: 3 or more people judged that it had an unnatural appearance when attached to the skin and was shiny.

[0160]

[0161] 1A-1I Laminated sheet 10 Release sheet 20 Adhesive layer 30 Resin layer 31 Base material layer 32, 32' Receiving layer 33 Concealing layer 34 Protective layer 35 Adhesive layer 40 Protective sheet 51A, 51B Laminated sheet (texture sheet) 60 First laminated sheet 70 Second laminated sheet

Claims

A laminated sheet comprising an adhesive layer and a resin layer including at least a substrate layer, Using a variable-angle photometer, visible light was incident on one surface of the resin layer at an angle of -45° relative to the normal direction of the resin layer, and the reflectance I at a light reception angle of 0° was measured from the surface side. ０° And, the reflection intensity I at a light receiving angle of 45° ４５° Ratio to (I ０° / I ４５° A laminated sheet in which the ratio is between 0.6 and 1.

0. The laminated sheet according to claim 1, wherein the 85-degree specular gloss measured from the surface side of the resin layer in accordance with the 85-degree specular gloss measurement method described in Method 1 of JIS Z8741:1997 is 0% or more and 40% or less. 　 On the surface of the resin layer, the arithmetic mean curvature Spc of the peak as defined in ISO 25178-2:2012 is 23 mm －１ 200mm or more －１ The laminated sheet according to claim 1, which is as follows: 　 The laminated sheet according to claim 1, wherein the resin layer comprises one or more resin materials selected from the group consisting of polyvinyl chloride, polyurethane, and polyolefin. 　 The laminated sheet according to claim 1, wherein the resin layer further comprises an opacity layer. 　 The laminated sheet according to claim 5, wherein the opacity layer contains a white pigment. 　 The laminated sheet according to claim 1, wherein the resin layer further comprises a receiving layer. 　 The laminated sheet according to claim 1, wherein the resin layer further comprises a protective layer. 　 The laminated sheet according to claim 1, wherein the thickness is 4.0 μm or more and 150 μm or less. 　 The laminated sheet according to claim 1, further comprising a release sheet on the side of the adhesive layer opposite to the resin layer. 　 A laminated sheet having a protective sheet and a resin layer provided on the protective sheet, After peeling off the protective sheet, using a variable-angle photometer, visible light is incident at -45° with respect to the normal direction of the resin layer from the surface on the protective sheet side of the resin layer, and the reflection intensity I at a light-receiving angle of 0° measured from the surface side ０° and the reflection intensity I at a light-receiving angle of 45° ４５° The ratio (I ０° / I ４５° ) is 0.6 or more and 1.0 or less, a laminated sheet 　 A skin-patterned sheet comprising a laminated sheet according to any one of claims 1 to 11. 　 A step of preparing a laminated sheet comprising an adhesive layer and a resin layer including at least a substrate layer, A process of forming an image by heating a heat transfer sheet having a dye layer using a heat transfer printer and transferring the dye from the dye layer to the resin layer, A method for manufacturing a skin-patterned sheet. 　 A step of preparing a first laminated sheet having a protective sheet and a resin layer provided on the protective sheet, A process of forming an image by heating a heat transfer sheet having a dye layer using a heat transfer printer and transferring the dye from the dye layer to the resin layer, A step of preparing a second laminated sheet having a release sheet and an adhesive layer provided on the release sheet, A step of manufacturing a laminated sheet by bonding the adhesive layer of the second laminated sheet and the image forming surface of the first laminated sheet, A method for manufacturing a skin-patterned sheet.

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