Decorative sheet and decorative material

Abstract

To provide a decorative sheet and a decorative material which can suppress lowering of weather resistance, even if a deep recess is formed thereon.SOLUTION: A decorative sheet 10 in which a pattern layer 12, a transparent resin layer 15 and a surface protective layer 16 are laminated in this order, and a plurality of recesses 15a and 16a are formed in the surface protective layer 16 and the transparent resin layer 15, wherein surface roughness on the surface side is 40 μm or more and 200 μm or less, and a ratio (T2 / T1) of thickness T2 in the bottom part of the recess 16a of the surface protective layer 16 to thickness T1 of the surface protective layer 16 between the adjacent recesses 16a is 1.2 or more and 2.0 or less.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to decorative sheets and decorative materials used for interior materials such as wall materials for buildings such as houses, exterior materials for furniture, and interiors of vehicles such as automobiles. [Background technology]

[0002] In decorative sheets used for interior materials such as wall materials for buildings like houses, exterior materials for furniture, and the interiors of vehicles like automobiles, forming an embossed uneven surface can create a tactile feel and also provide visual shadows. Therefore, for example, forming an embossed uneven surface on a wood grain vessel pattern can realistically represent the rough surface of wood both tactilely and visually, resulting in a decorative sheet with a luxurious feel and a highly designed appearance. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-149732 [Patent Document 2] Patent Publication No. 2021-167513 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when large embossments with concave and convex shapes are formed on the surface of a decorative sheet, the thickness of the concave portions becomes thin, which tends to cause a decrease in weather resistance.

[0005] In view of the above, an object of the present invention is to provide a decorative sheet and a decorative material that can suppress a decrease in weather resistance even when deep recesses are formed on the surface. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the decorative sheet of the present invention is a decorative sheet in which a pattern layer, a transparent resin layer, and a surface protective layer are laminated in this order, and a plurality of recesses are formed in the surface protective layer and the transparent resin layer, characterized in that the surface roughness on the front side is 40 μm or more and 200 μm or less, and the ratio (T2 / T1) of the thickness (T1) of the surface protective layer at the bottom of the recess (T2) to the thickness (T1) of the surface protective layer between adjacent recesses is 1.2 or more and 2.0 or less.

[0007] Furthermore, in the decorative sheet according to the present invention, it is preferable that the thickness of the transparent resin layer is 50 μm or more and 150 μm or less.

[0008] Furthermore, in the decorative sheet according to the present invention, it is preferable that the thickness (T1) of the surface protective layer is 1 μm or more and 20 μm or less.

[0009] Furthermore, the decorative sheet according to the present invention is preferably the decorative sheet described above, wherein the total thickness is 100 μm or more and 300 μm or less.

[0010] Furthermore, in the decorative sheet according to the present invention, it is preferable that the surface protective layer and the transparent resin layer contain at least one of an ultraviolet absorber and a light stabilizer.

[0011] Furthermore, in the decorative sheet according to the present invention, it is preferable that the surface protective layer contains an inorganic pigment in the recesses.

[0012] Furthermore, the decorative sheet of the present invention is preferably the decorative sheet described above, in which a colored resin layer, the pattern layer, the transparent resin layer, and the surface protection layer are laminated in this order, the colored resin layer contains vinyl chloride resin, and the transparent resin layer contains at least one of vinyl chloride resin and acrylic resin.

[0013] Furthermore, the decorative sheet of the present invention is preferably the decorative sheet described above, in which a colored resin layer, the pattern layer, the transparent resin layer, and the surface protection layer are laminated in this order, and the colored resin layer and the transparent resin layer contain an olefin resin.

[0014] On the other hand, in order to solve the above-mentioned problems, the decorative material of the present invention is characterized by comprising the above-mentioned decorative sheet and a substrate laminated on the side opposite the surface protective layer of the decorative sheet. [Effects of the Invention]

[0015] According to the decorative sheet and decorative material of the present invention, the surface roughness of the front side is 40 μm or more and 200 μm or less, and the ratio (T2 / T1) of the thickness (T2) of the surface protective layer at the bottom of the recess to the thickness (T1) of the surface protective layer between adjacent recesses is 1.2 or more and 2.0 or less, so that even if deep recesses are formed on the surface, a decrease in weather resistance can be suppressed. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a cross-sectional view showing a schematic structure of a first embodiment of a decorative sheet according to the present invention. [Figure 2] FIG. 2 is an extracted enlarged view of a main part of FIG. [Figure 3] FIG. 2 is a cross-sectional view showing the schematic structure of a decorative material that uses the decorative sheet of FIG. [Figure 4] FIG. 2 is a cross-sectional view showing the schematic structure of a second embodiment of a decorative sheet according to the present invention. [Figure 5] FIG. 5 is a cross-sectional view showing the schematic structure of a decorative material that uses the decorative sheet of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0017] Embodiments of the decorative sheet and decorative material according to the present invention will be described with reference to the drawings. Note that the present invention is not limited to the following embodiments described with reference to the drawings, and various technical matters described in each embodiment can be combined, substituted, omitted, etc. as needed.

[0018] [First embodiment] A first embodiment of a decorative sheet and decorative material according to the present invention will be described with reference to FIGS.

[0019] <Overall configuration of decorative sheet 10> As shown in Figure 1, decorative sheet 10 has a pattern layer 12 that forms a pattern on a colored resin layer 11 made of a colored resin. A transparent resin layer 15 made of a transparent resin is provided on pattern layer 12. A surface protection layer 16 made of a transparent resin is provided on transparent resin layer 15. The thickness (total thickness) of decorative sheet 10 is preferably 100 µm or more and 300 µm or less, and more preferably 120 µm or more and 200 µm or less.

[0020] <Colored resin layer 11> The colored resin layer 11 is colored opaquely and has hiding properties, allowing it to conceal color variations and defects on the back side, and also allows for an appropriate hue to be selected as the base color of the design layer 12. Polyvinyl chloride (PVC) resin is used as the material for the colored resin layer 11. In other words, the colored resin layer 11 is a colored PVC resin layer. PVC resin is flexible and suitable for printing, thermoplastic, and has good moldability and processability, and can be reused as a recycled material.

[0021] The colored resin layer 11 is colored by mixing a colorant such as a pigment into a resin material such as PVC and kneading it together. While organic or inorganic pigments can be used as the colorant, inorganic pigments are preferred. In other words, the colored resin layer 11 preferably contains an inorganic substance as the colorant. Examples of the colorant include one or more inorganic substances such as calcium carbonate, titanium oxide, carbon black, silica, chromium, antimony, titanium composites, and other oxides.

[0022] The colored resin layer 11 may further contain additives such as fillers, ultraviolet absorbers, light stabilizers, heat stabilizers, antioxidants, antistatic agents, lubricants, flame retardants, antibacterial agents, antifungal agents, antifriction agents, light scattering agents, and gloss adjusters, as needed.

[0023] The thickness of the colored resin layer 11 is preferably 30 μm or more and 150 μm or less, more preferably 40 μm or more and 120 μm or less, and even more preferably 50 μm or more and 100 μm or less. If it is less than 30 μm, flare and the like are likely to occur during manufacturing, which is not preferable. If it exceeds 150 μm, processability such as bending is likely to decrease, which is not preferable.

[0024] <Picture layer 12> The pattern layer 12 is provided between the colored resin layer 11 and the transparent resin layer 15, and allows a pattern to be added to impart a design. Examples of patterns for the pattern layer 12 include wood grain patterns, stone grain patterns, fabric patterns, abstract patterns, geometric patterns, letters, symbols, solid colors, etc., or combinations thereof. The pattern layer 12 is formed by printing with printing ink or paint using various printing methods such as gravure printing and offset printing, or by applying various coating methods such as gravure coating and roll coating.

[0025] Printing inks, paints, etc. are formed by dissolving or dispersing a colorant such as a dye or pigment together with a binder resin in a dilution medium. Examples of pigments include condensed azo, insoluble azo, quinacridone, isoindoline, anthraquinone, imidazolone, cobalt, phthalocyanine, carbon, titanium oxide, iron oxide, and pearl pigments such as mica. Examples of binder resins include urethane resins, acrylic resins, vinyl chloride acetate resins, polyimide resins, and soluble nitrocellulose.

[0026] The design layer 12 may contain functional additives such as extender pigments, plasticizers, dispersants, surfactants, tackifiers, adhesive aids, drying agents, hardeners, hardening accelerators, and hardening retarders to impart various functions.

[0027] The thickness of the design layer 12 is preferably in the range of 1 μm to 10 μm. If it is less than 1 μm, it becomes difficult to print clearly, which is not preferable. If it exceeds 10 μm, it is likely to cause a decrease in printing workability and may lead to an increase in manufacturing costs, which is not preferable.

[0028] <Transparent resin layer 15> The transparent resin layer 15 is provided to improve weather resistance and the like, and has a degree of transparency that allows for see-through, such as colorless transparency, colored transparency, or translucency, so that the design layer 12 can be seen. PVC resin or acrylic resin is used as the material for the transparent resin layer 15. That is, the transparent resin layer 15 is a transparent PVC resin layer or a transparent acrylic resin layer. PVC is flexible and suitable for printing, has thermoplasticity that allows for good moldability and processability, and can be reused as a recycled material.

[0029] The transparent resin layer 15 contains at least one of an ultraviolet absorber (UVA) and a light stabilizer (HALS). That is, the transparent resin layer 15 is formed of a transparent polyvinyl chloride resin or a transparent acrylic resin containing UVA or HALS. This allows the transparent resin layer 15 to exhibit excellent weather resistance.

[0030] Examples of UVA include benzophenones, benzotriazoles, triazines, etc. Examples of benzophenones include octabenzone, its modified products, polymers, and derivatives.

[0031] Examples of benzotriazoles include 2-(2-hydroxy-5-t-butylphenyl)-2H-benzotriazole, 2-(5-methyl-2-hydroxyphenyl)benzotriazole, 2-[2-hydroxy-3,5-bis(α,α-dimethylbenzyl)phenyl]-2H-benzotriazole, 2-(3,5-di-t-butyl-2-hydroxyphenyl)benzotriazole, 2-(3-t-butyl-5-methyl-2-hydroxyphenyl)-5-chlorobenzotriazole, 2-(3,5-di-t-butyl-2-hydroxyphenyl)-5-chlorobenzotriazole, 2-(3,5-di-t-amyl-2-hydroxyphenyl)benzotriazole, 2-(2'-hydroxy-5'-t-octylphenyl)benzotriazole, and mixtures, modified products, polymers, and derivatives thereof.

[0032] Examples of triazine-based compounds include 2-(4,6-diphenyl-1,3,5-triazin-2-yl)-5-[(hexyl)oxy]-phenol, 2-[4-[(2-hydroxy-3-dodecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-[4-[(2-hydroxy-3-tridecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2,4-bis(2,4-dimethylphenyl)-6-(2-hydroxy-4-isooctyloxyphenyl)-s-triazine, and mixtures, modified products, polymers, and derivatives thereof.

[0033] Examples of HALS include N-OR type hindered amine radical scavengers, etc. Specific examples include bis(1,2,2,6,6-pentamethyl-4-piperidyl)sebacate, methyl 1,2,2,6,6-pentamethyl-4-piperidylsebacate, 1-oxy-2,2,6,6-tetramethyl-4-hydroxypiperidine, 2,2,6,6-tetramethyl-4-piperidylstearate, 1,2,2,6,6-pentamethyl-4-piperidylstearate, 2,2,6,6-tetramethyl-4-piperidylbenzoate, bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate, tetramethyl-4-piperidylstearate ... Tetrakis(2,2,6,6-tetramethyl-4-piperidyl)-1,2,3,4-butanetetracarboxylate, tetrakis(1,2,2,6,6-pentamethyl-4-piperidyl)-1,2,3,4-butanetetracarboxylate, bis(2,2,6,6-tetramethyl-4-piperidyl)·di(tridecyl)-1,2,3,4-butanetetracarboxylate, bis(1,2,2,6,6-pentamethyl-4-piperidyl)·di(tridecyl)-1,2,3,4-butanetetracarboxylate, bis(1,2,2 ,4,4-pentamethyl-4-piperidyl)-2-butyl-2-(3,5-di-tert-butyl-4-hydroxybenzyl)malonate, 1-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-piperidinol / diethyl succinate polycondensate, 1,6-bis(2,2,6,6-tetramethyl-4-piperidylamino)hexane / 2,4-dichloro-6-morpholino-s-triazine polycondensate, 1,6-bis(2,2,6,6-tetramethyl-4-piperidylamino)hexane / 2,4-dichloro-6-tert-octyl Amino-s-triazine polycondensate, 1,5,8,12-tetrakis[2,4-bis(N-butyl-N-(2,2,6,6-tetramethyl-4-piperidyl)amino)-s-triazin-6-yl]-1,5,8,12-tetraazadodecane, 1,5,8,12-tetrakis[2,4-bis(N-butyl-N-(1,2,2,6,6-pentamethyl-4-piperidyl)amino)-s-triazin-6-yl]-1,5,8-12-tetraazadodecane, 1,6,11-tris[2,4-bis(N-butyl-N-(2,2,6,Examples of suitable cyclohexane derivatives include 1,6,11-tris[2,4-bis(N-butyl-N-(1,2,2,6,6-pentamethyl-4-piperidyl)amino)-s-triazin-6-yl]aminoundecane, 1,6,11-tris[2,4-bis(N-butyl-N-(1,2,2,6,6-pentamethyl-4-piperidyl)amino)-s-triazin-6-yl]aminoundecane, and the reaction product of 2-aminoethanol with a reaction product of bis(1,2,2,6,6-pentamethyl-4-piperidyl)[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]butylmalonate cyclohexane and N-butyl 2,2,6,6-tetramethyl-4-piperidinamine-2,4,6-trichloro-1,3,5-triazine peroxide.

[0034] The combined use of such an N-OR type hindered amine-based HALS and a triazine-based UVA is highly preferable because it can further improve weather resistance.

[0035] The transparent resin layer 15 preferably contains 0.5 to 30 parts by weight of UVA per 100 parts by weight of resin, more preferably 1 to 15 parts by weight, and even more preferably 3 to 10 parts by weight. An amount less than 0.5 parts by weight is undesirable because it is difficult to fully exhibit weather resistance. An amount exceeding 15 parts by weight is undesirable because it is prone to bleed-out and may cause deterioration of various physical properties.

[0036] The transparent resin layer 15 preferably contains 0.5 to 30 parts by mass of HALS per 100 parts by mass of resin, more preferably 1 to 15 parts by mass, and even more preferably 3 to 10 parts by mass. If the content is less than 0.5 parts by mass, it is difficult to fully exhibit weather resistance, which is undesirable. If the content exceeds 30 parts by mass, bleeding out is likely to occur and various physical properties may be reduced, which is undesirable.

[0037] The transparent resin layer 15 preferably has a thickness of 30 μm to 150 μm, more preferably 50 μm to 120 μm, and even more preferably 60 μm to 100 μm. If the thickness is less than 30 μm, flare and the like are likely to occur during manufacturing, which is not preferable. If the thickness exceeds 100 μm, processability such as bending is likely to decrease, which is not preferable.

[0038] <Surface protective layer 16> The surface protective layer 16 is provided to impart functions such as weather resistance, scratch resistance, contamination resistance, and design properties, and has a degree of transparency that allows for see-through, such as colorless transparency, colored transparency, or translucency, so that the picture layer 12 can be seen through the transparent resin layer 15. Examples of materials for the surface protective layer 16 include acrylic, urethane, acrylic silicone, fluorine-based, and epoxy-based resin compositions, with acrylic resins being particularly preferred.

[0039] Examples of the monomer component of the acrylic resin composition include cyclohexyl (meth)acrylate, cyclohexylmethyl (meth)acrylate, cyclohexylethyl (meth)acrylate, cyclohexylpropyl (meth)acrylate, cyclohexylbutyl (meth)acrylate, dimethylcyclohexane mono(meth)acrylate, dimethylcyclohexane di(meth)acrylate, trimethylcyclohexane mono(meth)acrylate, trimethylcyclohexane di(meth)acrylate, trimethylcyclohexane tri(meth)acrylate, tetramethylcyclohexane mono(meth)acrylate, tetramethylcyclohexane di(meth)acrylate, tetramethylcyclohexane tri(meth)acrylate, tetramethylcyclohexane tetra(meth)acrylate, dicyclohexylmethyl (meth)acrylate, dicyclohexylmethyl (meth)acrylate, phenoxycyclohexylmethyl (meth)acrylate, and methoxycyclohexylmethyl (meth)acrylate.

[0040] Among these monomer components, those having isomers can be used either individually or as a mixture. The inclusion of these monomer components can reduce affinity for water and suppress deterioration due to hydrolysis, etc. Note that (meth)acrylate refers to acrylate or methacrylate.

[0041] The content of (meth)acrylate is preferably in the range of 5% by mass to 50% by mass of all monomer components constituting the acrylic resin composition, i.e., of the monomer components of the acrylic resin composition that is the main component of the surface protective layer 16. If it is less than 5% by mass, it becomes difficult to sufficiently suppress deterioration, which is not preferable. If it exceeds 50% by mass, it is likely to cause a decrease in the various performance properties of the surface protective layer 16, such as improved surface hardness maintenance, improved stain resistance, and surface gloss adjustment, which is not preferable. Here, the above-mentioned "main component" means that the content of the acrylic resin composition constituting the surface protective layer 16 is 50% by mass or more relative to the total mass of the surface protective layer 16.

[0042] The surface protection layer 16 can be formed by applying a coating liquid of an acrylic resin composition containing the above-mentioned (meth)acrylate as a monomer component. Examples of methods for curing the applied coating liquid include a one-component curing type, a two-component curing type that uses a curing agent, and an active energy ray curing type that cures by irradiating with ultraviolet light or ionizing radiation. Among these, two-component curing types and active energy ray curing types are preferred in consideration of weather resistance, and two-component curing types that crosslink by isocyanate curing are preferred in consideration of post-processing properties.

[0043] The two-component curing acrylic resin composition is preferably a composition containing, for example, an acrylic resin having two or more functional groups, such as hydroxyl groups, amino groups, or carboxyl groups, in one molecule, and a polyisocyanate compound having two or more isocyanate groups in one molecule that can react with the functional groups. In particular, a composition containing an acrylic polyol having two or more hydroxyl groups in one molecule and a polyisocyanate compound is particularly preferred.

[0044] The acrylic polyol may be, for example, a (meth)acrylic acid ester copolymer containing hydroxyethyl (meth)acrylate as a monomer component in addition to cyclohexyl (meth)acrylate.

[0045] Examples of the polyisocyanate compound include tolylene diisocyanate (TDI), 4,4'-diphenylmethane diisocyanate (MDI), xylylene diisocyanate (XDI) and hydrogenated compounds thereof, isophorone diisocyanate (IPDI), hexamethylene diisocyanate (HDI), and trimer types, TMP adduct types, and biuret types obtained by combining these compounds.

[0046] Furthermore, it is also possible to use a composition in which a plurality of different types of polyisocyanates are mixed. Among these, taking into consideration weather resistance, HDI, HDI trimer type, TMP adduct type, and biuret type are preferred.

[0047] The amount of polyisocyanate compound mixed with the acrylic polyol is preferably set so that the equivalent ratio of hydroxyl groups to isocyanate groups is about 1 / 1 to 1 / 3. If the equivalent of hydroxyl groups is greater than the equivalent of isocyanate groups, sufficient crosslinking becomes difficult, which may cause a decrease in the functionality of the surface protective layer 16, which is undesirable.

[0048] On the other hand, in the case of an active energy ray curable type, a known monomer or oligomer having a (meth)acryloyl group can be used as the acrylic resin composition, and in addition to these monomers or oligomers, the above-mentioned (meth)acrylate can be contained.

[0049] Furthermore, in order to further improve weather resistance, the surface protection layer 16 contains at least one of UVA and HALS, similar to the transparent resin layer 15 described above.

[0050] As in the case of the transparent resin layer 15, examples of UVAs include benzophenone-based, benzotriazole-based, and triazine-based compounds. Among these, triazine-based compounds are preferred because the triazine skeleton suppresses bleeding and is chemically more stable than benzophenone-based and benzotriazole-based compounds, allowing for long-term UV absorption performance. Hydroxyphenyltriazine-based compounds are particularly preferred.

[0051] Examples of hydroxyphenyltriazines include 2-(2-hydroxy-4-[1-octyloxycarbonylethoxy]phenyl)-4,6-bis(4-phenylphenyl)-1,3,5-triazine, 2-(4,6-diphenyl-1,3,5-triazin-2-yl)-5-[2-(2-ethylhexanoyloxy)ethoxy]phenol, 2-(4,6-diphenyl-1,3,5-triazin-2-yl)-5-[(hexyl)oxy]phenol, 2-[4-[(2-hydroxy-3-tridecyloxypropyl)oxy]-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-ethylhexanoic acid, 2-[4-(4,6-diphenyl-[1,3,5]triazin-2-yl)-3-hydroxyphenyl]- hydroxy-phenoxy]-ethyl ester, octanoic acid, 2-[4-(4,6-diphenyl-[1,3,5]triazin-2-yl)-3-hydroxy-phenoxy]-ethyl ester, 2,4,6-tris{2-(2-hydroxy-4-[1-octyloxycarbonylethoxy]phenyl)}-1,3,5-triazine, 2,4-bis(2-hydroxy-4-butyloxyphenyl)-6-(2,4-bis-butyloxyphenyl)-1,3,5-triazine, 2,4-bis(2,4-dimethylphenyl)-6-(2-hydroxy-4-isooctyloxyphenyl)-s-triazine, 2,4-bis(2-hydroxy-4-butyloxyphenyl)-6-(2,4-bis-butyloxyphenyl)-1,3,5-triazine, and the like.

[0052] The surface protective layer 16 preferably contains 1 to 30 parts by weight of UVA per 100 parts by weight of the resin composition (e.g., an acrylic resin composition), more preferably 3 to 20 parts by weight, and even more preferably 5 to 15 parts by weight. An amount of UVA less than 1 part by weight is not preferred because it is difficult to fully exhibit weather resistance. An amount of UVA exceeding 30 parts by weight is not preferred because it is prone to bleed-out and may cause a deterioration in various physical properties.

[0053] When 2-(2-hydroxy-4-[1-octyloxycarbonylethoxy]phenyl)-4,6-bis(4-phenylphenyl)-1,3,5-triazine (for example, UVA "Tinuvin (registered trademark) 479 (product number)" manufactured by BASF Japan Ltd., hereinafter referred to as "UVAα") is used, the amount of the compounded resin is preferably in the range of 1 to 20 parts by mass, more preferably in the range of 5 to 15 parts by mass, and even more preferably in the range of 8 to 12 parts by mass, per 100 parts by mass of the resin composition.

[0054] Furthermore, when UVAα is used in combination with 2-(4,6-diphenyl-1,3,5-triazin-2-yl)-5-[2-(2-ethylhexanoyloxy)ethoxy]phenol (for example, UVA "ADK STAB (registered trademark) LA-46 (product number)" manufactured by ADEKA CORPORATION / hereinafter referred to as "UVAβ"), even better weather resistance can be achieved.

[0055] This is because "UVAβ" has a high ability to absorb ultraviolet light in the short wavelength range, which is relatively high energy among ultraviolet light, and is chemically stable compared to other ultraviolet absorbers that absorb light in approximately the same wavelength range. Therefore, when used in combination with "UVAα," the wavelength range in which ultraviolet light is absorbed is broadened.

[0056] In such a combination, when the mixed amount of UVAβ is 100 parts by mass, it is preferable to mix UVAα in a range of 10 parts by mass to 200 parts by mass, more preferably in a range of 20 parts by mass to 100 parts by mass, and even more preferably in a range of 40 parts by mass to 80 parts by mass.

[0057] On the other hand, examples of HALS include N-OR type hindered amine radical scavengers, etc., similar to those used in the transparent resin layer 15. The combined use of such N-OR type hindered amine HALS and triazine type UVA is highly preferred, as it can further improve weather resistance.

[0058] The surface protective layer 16 preferably contains 0.5 to 30 parts by mass of HALS per 100 parts by mass of the resin composition, more preferably 1 to 15 parts by mass, and even more preferably 3 to 10 parts by mass. If the content is less than 0.5 parts by mass, it is difficult to fully exhibit weather resistance, which is undesirable. If the content exceeds 30 parts by mass, bleeding out is likely to occur and physical properties may be reduced, which is undesirable.

[0059] The surface protective layer 16 may further contain various additives, such as a heat stabilizer, an antiblocking agent, a catalyst scavenger, a colorant, a light scattering agent, and a gloss adjuster, as required.

[0060] As mentioned above, the surface protective layer 16 can be formed by applying a coating liquid. The surface protective layer 16 can be formed by applying a coating liquid in an amount of 3 g / m. 2 More than 10g / m 2 It is preferable that the thickness is in the range of less than 1 μm. That is, it is preferable that the thickness is in the range of 1 μm or more and 20 μm or less. Of these, it is more preferable that the thickness is in the range of 3 μm or more and 18 μm or less, and even more preferable that the thickness is in the range of 3 μm or more and 15 μm or less.

[0061] Coating amount is 3g / m 2 If the coating amount is less than 10 g / m (thickness is less than 1 μm), it becomes difficult to fully exhibit weather resistance, which is not preferable. 2 If the thickness is more than 20 μm, it is likely to cause a decrease in productivity and processability such as bending workability, which is not preferable.

[0062] <recess> 1, the decorative sheet 10 according to this embodiment has a plurality of recesses 15a recessed inward on the surface protective layer 16 side (surface side) of the transparent resin layer 15. Recesses 16a corresponding to the internal shapes of the recesses 15a of the transparent resin layer 15 are formed on the surface of the surface protective layer 16. In other words, the recesses 16a of the surface protective layer 16 are formed inside the recesses 15a of the transparent resin layer 15 so as to cover the inner surfaces of the recesses 15a.

[0063] <Surface roughness> Here, in the decorative sheet 10 having the recesses 15a, 16a formed therein, the condition of the front side (the surface protective layer 16 side) can be expressed by the surface roughness Rz(f). This surface roughness Rz(f) of the front side is a value determined in accordance with the maximum height Rz specified in the Japanese Industrial Standard "JIS B 0601."

[0064] In the decorative sheet 10 according to this embodiment, the surface roughness Rz(f) of the front side is set to 40 μm or more and 200 μm or less. If it is less than 40 μm, it will not be possible to obtain a decorative sheet with a high-quality and stylish design, and if it exceeds 200 μm, it will be difficult to form the recesses 16a of the surface protection layer 16 all the way to the bottom of the recesses 15a of the transparent resin layer 15.

[0065] In particular, it is preferable that the surface roughness Rz(f) of the front side is 100 μm or more and 180 μm or less. If it is 100 μm or more, a decorative sheet with a very luxurious and highly designed appearance can be obtained, and if it is 180 μm or less, it is very easy to form the recesses 16 a in the surface protective layer 16 all the way to the bottom of the recesses 15 a in the transparent resin layer 15.

[0066] <Filling rate> Furthermore, in the decorative sheet 10 according to this embodiment, as shown in Fig. 2, the filling ratio Fr (= T2 / T1), which is the ratio of the thickness T2 of the surface protective layer 16 at the bottom of the recesses 16a to the thickness T1 of the surface protective layer 16 between adjacent recesses 16a, is 1.2 or more and 2.0 or less. If the filling ratio Fr is less than 1.2, the weather resistance of the recesses 16a will be reduced, and if it exceeds 2.0, the suitability of the recesses 16a for processing, such as bending, will be reduced. It is more preferable that Fr is 1.6 or more.

[0067] <Method for manufacturing decorative sheet 10> The decorative sheet 10 according to this embodiment can be manufactured as follows: A colored resin layer 11 is formed into a sheet shape by mixing and kneading a colorant such as a pigment into a resin material such as PVC, and a pattern is printed with ink to form a pattern layer 12. Then, a transparent resin layer 15, formed into a sheet shape by mixing and kneading UVA or HALS into PVC or acrylic resin, is laminated on top of the pattern layer 12, and doubling embossing is performed using an embossing roll and a rubber roll while heating.

[0068] That is, an embossing roll, on the periphery of which an embossing plate with a plurality of convex protrusions is attached, and a rubber roll, on the periphery of which an elastic rubber blanket is attached, are placed in contact with each other and rotated synchronously, and the transparent resin layer 15 is fed while being heated between the embossing roll and the rubber roll so that the transparent resin layer 15 faces the embossing roll. As a result, the design layer 12 and the transparent resin layer 15 are bonded together, and at the same time, the protrusions of the embossing plate of the embossing roll press the transparent resin layer 15 from the surface side, forming recesses 15a.

[0069] Next, a coating liquid of an acrylic resin composition mixed with UVA and HALS is applied onto the transparent resin layer 15, and a wiping operation is performed by pressing a blade against the transparent resin layer 15 to cause the coating liquid to flow into the recesses 15a, and after the coating liquid has been forced into the recesses 15a, it is cured, thereby forming a surface protective layer 16 having recesses 16a. In this way, the decorative sheet 10 according to this embodiment can be obtained.

[0070] The depth of the recesses 15a in the transparent resin layer 15 can be adjusted by adjusting the thickness (height), size (spacing), and shape of the spaces (convex portions) between adjacent recesses 15a, the pressure between the embossing roll and the rubber roll, the hardness and thickness of the rubber blanket of the rubber roll, etc. The thickness T1 of the surface protective layer 16 between adjacent recesses 16a and the thickness T2 of the surface protective layer 16 at the bottom of the recesses 16a can be adjusted by adjusting the state of the coating liquid (amount, viscosity, solid content, etc.), the properties of the blade (hardness, shape, etc.) and how it contacts (contact angle, pressing pressure, etc.), the number of wiping strokes, etc. In other words, the surface roughness Rz(f) of the front side (surface protective layer 16 side) of the decorative sheet 10 can be adjusted as needed.

[0071] <Overall structure of decorative material 100> In the decorative material 100 according to this embodiment, which uses such a decorative sheet 10, as shown in Figure 3, the colored resin layer 11 of the decorative sheet 10 is bonded to a substrate 101 via an adhesive layer 102. In other words, the substrate 101 is laminated on the side of the decorative sheet 10 opposite the surface protective layer 16.

[0072] <Substrate 101> Materials for the substrate 101 include metals such as steel plate and aluminum plate, wood materials such as wood veneer, wood plywood, laminated lumber, particle board, hard fiberboard, and medium-density fiberboard (MDF), and resins such as PVC resin. Substrates 101 made of PVC resin have high thermal insulation properties and are in high demand as window frame fittings (sashes). Furthermore, in decorative materials 100 in which the substrate 101 is made of PVC resin, the decorative sheet 10 is mostly made of PVC, so that the substrate 101 can be dissolved and reused together with the decorative sheet 10, further improving recyclability.

[0073] <Adhesive layer 102> The adhesive layer 102 is a layer for bonding the substrate 101 and the colored resin layer 11 of the decorative sheet 10. Examples of adhesives that can be used for the adhesive layer 102 include urethane-based, acrylic-based, ethylene-vinyl acetate copolymer, vinyl chloride-vinyl acetate copolymer-based, and polyester-based adhesives. In particular, a two-component curing urethane-based adhesive that combines polyester polyol and polyisocyanate is preferred. The adhesive layer 102 has a thickness that allows the protrusions 11b of the colored resin layer 11 of the decorative sheet 10 to be embedded therein, thereby bonding the decorative sheet 10 and the substrate 101 together, and is preferably, for example, 1 μm or more and 100 μm or less.

[0074] <Actions and Effects of the Decorative Sheet 10 and the Decorative Material 100> In this embodiment, the surface roughness Rz(f) of the front side of the decorative sheet 10 is 40 μm or more and 200 μm or less, and the filling rate Fr is 1.2 or more and 2.0 or less. Therefore, even if the front side of the decorative sheet 10 is embossed with a large uneven shape such as a wood grain vascular pattern, that is, even if the recesses 16a of the surface protective layer 16 are made large (deep), the reduction in thickness of the recessed parts of the decorative sheet 10 can be greatly suppressed, and the deterioration of weather resistance can be suppressed.

[0075] Therefore, the decorative sheet 10 and decorative material 100 of this embodiment can realistically express the rough surface condition of wood both tactilely and visually, thereby creating a luxurious feel with a highly designed appearance while maintaining weather resistance.

[0076] [Second embodiment] A second embodiment of the decorative sheet and decorative material according to the present invention will be described with reference to Figures 4 and 5. However, for parts similar to those in the previously described embodiment, the same reference numerals as those used in the description of the previously described embodiment will be used, and explanations that overlap with those in the previously described embodiment will be omitted.

[0077] <Overall configuration of decorative sheet 20> As shown in FIG. 4, the decorative sheet 20 has a pattern layer 12 that forms a pattern provided on a colored resin layer 21 that is made of a colored resin. An anchor layer 23 made of a transparent resin is provided on the pattern layer 12. A transparent adhesive layer 24 made of a transparent adhesive resin is provided on the anchor layer 23. A transparent resin layer 25 made of a transparent resin is provided on the transparent adhesive layer 24. A surface protection layer 16 made of a transparent resin is provided on the transparent resin layer 25. A base layer 27 made of a resin is provided on the back surface (lower surface in FIG. 4) of the colored resin layer 21. Like the decorative sheet 10 according to the above-described embodiment, the decorative sheet 20 preferably has a thickness (total thickness) of 100 μm or more and 300 μm or less, and more preferably 120 μm or more and 200 μm or less.

[0078] <Colored resin layer 21> The colored resin layer 21, like the colored resin layer 11 in the embodiment described above, is colored opaquely and has concealing properties, making it possible to conceal color variations and defects on the back side, and also allowing the hue to be appropriately selected as the base color of the design layer 12. Polyolefin resins such as polyethylene resins and polypropylene resins are used as the material for the colored resin layer 21. In other words, the colored resin layer 21 is a colored polyolefin resin layer. Otherwise, the colored resin layer 21 is similar to the colored resin layer 11 in the embodiment described above.

[0079] <Anchor Layer 23> The anchor layer 23 is provided to improve adhesion to the colored resin layer 21 via the pattern layer 12, and has transparency such as colorless transparency, colored transparency, or translucency, allowing the pattern layer 12 to be seen. Examples of materials for the anchor layer 23 include urethane resin. The anchor layer 23 preferably has a thickness in the range of 0.3 μm to 10 μm.

[0080] <Transparent adhesive layer 24> The transparent adhesive layer 24 is provided to bond the transparent resin layer 25 and the anchor layer 23, and has transparency such as colorless transparent, colored transparent, or translucent, allowing the pattern layer 12 to be seen through the anchor layer 23. Examples of materials for the transparent adhesive layer 24 include polyolefin resin. The transparent adhesive layer 24 preferably has a thickness in the range of 1 μm to 20 μm.

[0081] <Transparent resin layer 25> The transparent resin layer 25 has transparency such as colorless transparency, colored transparency, or translucency, allowing the design layer 12 to be seen through the transparent adhesive layer 24 and the anchor layer 23. Polyolefin resins such as polyethylene resin and polypropylene resin are used as the material for the transparent resin layer 25. In other words, the transparent resin layer 25 is a transparent polyolefin resin layer. Otherwise, the transparent resin layer 25 is similar to the transparent resin layer 15 of the above-described embodiment.

[0082] <Base layer 27> The underlayer 27 is provided to improve the adhesion between the substrate 101 and the colored resin layer 21 and the corrosion resistance of the substrate 101. Examples of materials for the underlayer 27 include urethane resin. The underlayer 27 may contain an anti-rust pigment to further improve corrosion resistance. The thickness of the underlayer 27 is preferably in the range of 0.3 μm to 10 μm.

[0083] That is, the decorative sheet 10 according to the above-described embodiment is a case in which a colored resin layer 11 made of PVC resin and a transparent resin layer 15 made of PVC resin or acrylic resin are applied, whereas the decorative sheet 20 according to the present embodiment is a case in which a colored resin layer 21 and a transparent resin layer 25 made of polyolefin resin are applied.

[0084] <recess> 4, the decorative sheet 20 according to this embodiment has a plurality of recesses 25a recessed inward on the surface protective layer 16 side (surface side) of the transparent resin layer 25. Recesses 16a corresponding to the internal shapes of the recesses 25a of the transparent resin layer 25 are formed on the surface of the surface protective layer 16. In other words, the recesses 16a of the surface protective layer 16 are formed inside the recesses 25a of the transparent resin layer 25 so as to cover the inner surfaces of the recesses 25a.

[0085] <Surface roughness> In the decorative sheet 20 according to this embodiment, like the decorative sheet 10 according to the previously described embodiment, the surface roughness Rz(f) of the front side is 40 μm or more and 200 μm or less, and preferably 100 μm or more and 180 μm or less. Furthermore, in the decorative sheet 20 according to this embodiment, like the decorative sheet 10 according to the previously described embodiment, the filling ratio Fr is 1.2 or more and 2.0 or less.

[0086] <Method for manufacturing decorative sheet 20> The decorative sheet 20 according to this embodiment can be manufactured as follows: A pattern is printed with ink on the front side of a colored resin layer 21 formed into a sheet by mixing and kneading a colorant such as a pigment into an olefin resin, to form the pattern layer 12, and an ink such as a urethane resin is printed on the back side of the colored resin layer 21 to form a base layer 27. Next, a coating liquid such as a urethane resin is applied onto the pattern layer 12 to form the anchor layer 23, and a transparent adhesive layer 24 and a transparent resin layer 25 are laminated on the anchor layer 23 by co-extrusion of a polyolefin resin or the like.

[0087] Then, the transparent resin layer 25 is embossed using the embossing roll and rubber roll described above, thereby forming recesses 25a. Next, a coating liquid of an acrylic resin composition mixed with and kneaded with UVA and HALS is applied to the transparent resin layer 25, and a wiping operation is performed by pressing a blade against the transparent resin layer 25 to cause the coating liquid to flow into the recesses 25a. After the coating liquid has been forced into the recesses 25a, the coating liquid is cured, thereby forming a surface protective layer 16 having recesses 16a. In this way, the decorative sheet 20 according to this embodiment can be obtained.

[0088] As in the previously described embodiment, the depth of the recesses 25a in the transparent resin layer 25 can be adjusted by adjusting the thickness (height), size (spacing), and shape of the spaces (convex portions) between adjacent recesses 25a, the pressure between the embossing roll and the rubber roll, the hardness and thickness of the rubber blanket of the rubber roll, etc. Similarly to the previously described embodiment, the thickness T1 between adjacent recesses 16a and the thickness T2 at the bottom of the recesses 16a can be adjusted by adjusting the state of the coating liquid (amount, viscosity, solid content, etc.), the properties of the blade (hardness, shape, etc.) and how it contacts the surface (contact angle, pressing pressure, etc.), the number of wiping strokes, etc. In other words, the surface roughness Rz(f) of the front side (surface protective layer 16 side) of the decorative sheet 20 can be adjusted as needed, as in the previously described embodiment.

[0089] <Overall structure of decorative material 200> In the decorative material 200 according to this embodiment, which uses such a decorative sheet 20, as shown in Figure 5, the base layer 27 of the decorative sheet 20 is bonded to a substrate 101 via an adhesive layer 102. In other words, the substrate 101 is laminated on the side of the decorative sheet 20 opposite the surface protection layer 16.

[0090] <Actions and Effects of the Decorative Sheet 20 and the Decorative Material 200> In this embodiment, similar to the previously described embodiment, the surface roughness Rz(f) of the front side of the decorative sheet 20 is 40 μm or more and 200 μm or less, and the filling rate Fr is 1.2 or more and 2.0 or less. Therefore, even if a large embossment with a concave-convex shape such as a wood grain vessel pattern is formed on the front side of the decorative sheet 20, that is, even if the recesses 16a of the surface protective layer 16 are formed large (deep), similar to the previously described embodiment, the reduction in thickness of the recessed portions of the decorative sheet 20 can be greatly suppressed, and a decrease in weather resistance can be suppressed.

[0091] Therefore, with the decorative sheet 20 and decorative material 200 of this embodiment, similar to the decorative sheet 10 and decorative material 100 of the previously described embodiment, the rough surface condition of wood can be realistically expressed both tactilely and visually, thereby creating a luxurious feel with a highly designed design while being weather resistant.

[0092] [Other embodiments] In the above-described embodiment, the decorative sheets 10, 20 have been described as having the colored resin layers 11, 21, but the present invention is not limited to this. In other embodiments, for example, the colored resin layers 11, 21 can be omitted, and a decorative sheet can be provided in which a pattern layer 12 is provided on the back side of the transparent resin layers 15, 25 and a surface protection layer 16 is provided on the front side of the transparent resin layers 15, 25.

[0093] In this case, depending on the design of the design layer 12, if the back side of the design layer 12 is visible, causing inconvenience, it is preferable to provide a concealing layer on the back side of the design layer 12 using an opaque printing ink or paint containing a large amount of opaque pigments such as titanium dioxide or iron oxide.

[0094] Furthermore, in the above-described embodiment, the decorative sheets 10, 20 were described in which the transparent resin layer 15, 25 was embossed to form the recesses 15a, 25a, and then a coating liquid of an acrylic resin composition was applied and wiped to form the surface protective layer 16 and the recesses 16a on the surface of the transparent resin layer 15, 25 and inside the recesses 15a, 25a, but the present invention is not limited to this. In another embodiment, for example, the recesses 16a can be formed by applying a coating liquid of an acrylic resin composition to the transparent resin layer 15, 25 to form the surface protective layer 16, and then embossing.

[0095] In the above-described embodiment, only the surface protective layer 16 is provided on the transparent resin layers 15 and 25, but the present invention is not limited to this. In another embodiment, for example, a gloss-adjusting layer that matches the pattern of the pattern layer 12 may be further provided on the surface protective layer 16 to further enhance the design and luxury feel.

[0096] Furthermore, for example, by incorporating the aforementioned inorganic pigment into the recessed portions 16a of the surface protective layer 16, it is possible to color the recessed portions 16a of the surface protective layer 16 and make the shadows of the recessed portions 16a stand out more against the surface of the surface protective layer 16, thereby further improving the design and luxurious feel. In this case, since the recessed portions 16a of the surface protective layer 16 contain an inorganic pigment, the weather resistance of the recessed portions 16a is further improved, and it is also possible to significantly suppress changes in color tone (fading). [Example]

[0097] Examples of the decorative sheet and decorative material according to the present invention will be specifically described below, but the present invention is not limited to the specific examples described below.

[0098] [Preparation of test specimens and comparison specimens] <Test specimen 1> A colored PVC resin sheet (80 μm thick) is used as the colored resin layer, and a pattern is printed on the colored resin layer with a PVC resin ink using a mixed resin of acrylic resin and vinyl chloride-vinyl acetate copolymer resin as a binder to form a pattern layer (5 μm thick). Next, a PVC sheet (80 μm thick) containing triazine-based UVA (0.5 parts by mass) and hindered amine-based HALS (0.5 parts by mass) is used as the transparent resin layer, and the pattern layer and the transparent resin layer are laminated together.

[0099] Then, while heating, a doubling embossing process is performed using an embossing roll and a rubber roll to bond the design layer and form recesses in the transparent resin layer. Next, a coating liquid of an acrylic resin composition having the following composition ratio is applied (3 g / m) onto the transparent resin layer. 2 ) and wiping to fill the recesses in the transparent resin layer with the coating liquid, and then curing to form a surface protection layer (thickness (T1) 3.0 μm) with recesses (thickness (T2) 3.6 μm), and decorative sheet specimen 1 with the surface roughness Rz(f) values ​​shown in Table 1 was produced.

[0100] 《Surface protective layer》 Main ingredient: Methyl methacrylate (95) / 2-hydroxyethyl methacrylate (5) 90 parts by mass of copolymer Hardener: 10 parts by weight of "Takenate (registered trademark) D170 (product number)" manufactured by Mitsui Chemicals, Inc. UVA: 9 parts by weight of "Tinuvin (registered trademark) 479 (product number)" manufactured by BASF Japan Ltd. HALS: 3 parts by weight of "Tinuvin (registered trademark) 123 (product number)" manufactured by BASF Japan Ltd. Solvent: 240 parts by weight of ethyl acetate

[0101] <Test specimen 2> In the same manner as specimen 1, specimen 2 (thickness (T1) 3.0 μm, thickness (T2) 3.6 μm) of decorative sheet having the surface roughness Rz(f) values ​​shown in Table 1 was prepared.

[0102] <Test specimen 3> In the same manner as specimen 1, decorative sheet specimen 3 (thickness (T1) 3.0 μm, thickness (T2) 3.6 μm) with the surface roughness Rz(f) values ​​shown in Table 1 was prepared.

[0103] <Test piece 4> In the same manner as specimen 1, decorative sheet specimen 4 (thickness (T1) 3.0 μm, thickness (T2) 3.6 μm) with the surface roughness Rz(f) values ​​shown in Table 1 was prepared.

[0104] <Test specimen 5> A coating liquid of an acrylic resin composition having the same composition as that of test piece 1 was applied to the surface of the transparent resin layer (3 g / m 2 ), and an inorganic pigment-containing coating liquid, prepared by further mixing an inorganic pigment into the coating liquid in the ratio shown below, was poured into the recesses of the transparent resin layer and cured to form a surface protective layer (thickness (T1) 3.0 μm) with recesses (thickness (T2) 3.6 μm), thereby producing decorative sheet specimen 5 with the surface roughness Rz(f) values ​​shown in Table 1. Other than the above, specimen 5 was produced in the same manner as specimen 1.

[0105] <<Concave portion of surface protective layer>> Inorganic pigment: 6 parts by weight of "DAIPYROXIDE (registered trademark)" manufactured by Dainichiseika Color & Chemicals Mfg. Co., Ltd. *2 parts by weight of "Yellow♯9121 (product number)" *“Brown #9220 (product number)” 2 parts by mass *2 parts by weight of "Blue #9410 (product number)"

[0106] <Test piece 6> A colored polypropylene (PP) resin sheet (70 μm thick) is used as the colored resin layer, and a pattern is printed on the front side of the colored resin layer with an olefin resin ink using a urethane resin binder to form a pattern layer (3 μm thick). A urethane resin ink is then printed on the back side of the colored resin layer to form a base layer (1 μm thick). Next, a urethane resin coating liquid is applied to the pattern layer to form an anchor layer (1 μm thick), and PP resin is co-extruded to form a transparent adhesive layer (10 μm thick) and a transparent resin layer (70 μm thick) on the anchor layer.

[0107] Then, an embossing process was performed on the transparent resin layer using an embossing roll and a rubber roll to form recesses in the transparent resin layer, and a coating liquid of the same acrylic resin composition as that of specimen 1 was applied to the transparent resin layer and wiped to fill the recesses in the transparent resin layer, followed by curing, thereby forming a surface protective layer (thickness (T1) 3.0 μm) with recesses (thickness (T2) 3.6 μm), and specimen 6 of the decorative sheet having the surface roughness Rz(f) value shown in Table 1 was produced.

[0108] <Comparative body 1> In the same manner as specimen 1, comparative decorative sheet specimen 1 (thickness (T1) 3.0 μm, thickness (T2) 3.6 μm) with the surface roughness Rz(f) values ​​shown in Table 1 was produced.

[0109] <Comparative body 2> In the same manner as specimen 1, comparative decorative sheet specimen 2 (thickness (T1) 3.0 μm, thickness (T2) 3.6 μm) with the surface roughness Rz(f) values ​​shown in Table 1 was produced.

[0110] <Comparative body 3> In the same manner as specimen 1, comparative decorative sheet specimen 3 (thickness (T1) 3.0 μm, thickness (T2) 3.6 μm) with the surface roughness Rz(f) values ​​shown in Table 1 was produced.

[0111] <Comparative body 4> In the same manner as specimen 1, comparative decorative sheet specimen 4 (thickness (T1) 3.0 μm, thickness (T2) 3.6 μm) having the surface roughness Rz(f) values ​​shown in Table 1 was produced.

[0112] <Comparative body 5> In the same manner as specimen 6, comparative decorative sheet specimen 5 (thickness (T1) 3.0 μm, thickness (T2) 3.6 μm) having the surface roughness Rz(f) values ​​shown in Table 1 was produced.

[0113] [Check characteristic values] <Surface roughness Rz(f) measurement> The surface roughness Rz(f) of the front side of test specimens 1 to 6 and comparison specimens 1 to 5 was measured in accordance with the maximum height Rz specified in the Japanese Industrial Standard "JIS B 0601." The results are shown in Table 1.

[0114] <Filling rate Fr calculation> For test specimens 1 to 6 and comparative specimens 1 to 5, the filling ratio Fr (=T2 / T1) was calculated based on the thickness T1 of the surface protective layer between adjacent recesses and the thickness T2 of the surface protective layer at the bottom of the recesses. The results are shown in Table 1.

[0115] [Evaluation method] <Design> The design of test specimens 1 to 6 and comparative specimens 1 to 5 was evaluated visually and by touch. The results are shown in Table 1. In Table 1, "x" indicates that almost no three-dimensional effect or texture was obtained both visually and tactilely, "○" indicates that a strong three-dimensional effect or texture was obtained only by touch, "◎" indicates that a strong three-dimensional effect or texture was obtained both visually and tactilely, and "☆" indicates that not only a strong three-dimensional effect or texture was obtained by touch, but also a very strong three-dimensional effect or texture was obtained by touch.

[0116] <Weather resistance> Test Method Test specimens 1 to 6 and comparison specimens 1 to 5 were subjected to a 504-hour weather resistance test using an ultra-accelerated weather resistance tester ("Metal Weather (registered trademark)" manufactured by Daipla Wintes Co., Ltd.) under the following conditions: 20 hours of UV light irradiation and 4 hours of condensation were repeated. ·UV light illuminance: 65mW / cm 2 Black panel temperature: 63°C

[0117] Evaluation Criteria The color tones of the surface and recessed portions of the surface protection layer of test specimens 1 to 6 and comparative specimens 1 to 5 were visually inspected and the differences were evaluated. The results are shown in Table 1 below. In Table 1, "◎" indicates that there was almost no difference, "◯" indicates that there was a slight difference but no practical problem, and "×" indicates that there was a large difference and the product was not suitable for practical use.

[0118] <General> An overall evaluation was conducted combining design and weather resistance. The overall evaluation was as follows: if both design and weather resistance were rated as "◎" or above, it was given a "◎", if one of design and weather resistance was rated as "◎" or above and the other was "○", it was given a "○", if both design and weather resistance were "○", it was given a "△", and if at least one of design and weather resistance was "×", it was given an "×". "◎", "○", and "△" were considered to be pass. The results are shown in Table 1 below.

[0119] [result] The physical property confirmation results and evaluation results of test specimens 1 to 6 and comparative specimens 1 to 5 are shown in Table 1.

[0120] [Table 1]

[0121] As can be seen from Table 1, for test specimens 1 to 6 and comparative specimens 1 to 5, the surface roughness Rz(f) on the front side was 40 μm or more, and therefore the design was rated as "○" or better. In particular, for test specimens 1, 2, 4, and 6 and comparative specimens 1, 2, 4, and 6, the surface roughness Rz(f) on the front side was 100 μm or more, and therefore the design was rated as "◎". Of these, for test specimen 5, not only was the surface roughness Rz(f) on the front side 100 μm or more, but the surface protective layer also contained inorganic pigment in the recesses, and therefore the design was rated as "☆".

[0122] On the other hand, in comparative specimens 1 to 5, the filling rate Fr was less than 1.2, so the weather resistance was rated "×". In contrast, in specimens 1 to 6, the filling rate Fr was 1.2 or more, so the weather resistance was rated "○" or better. In particular, in specimen 4, the filling rate Fr was 1.6, and in specimen 5, the surface protective layer contained inorganic pigment in the recesses, so the weather resistance was rated "◎".

[0123] Therefore, the comparative samples 1 to 5 were given an overall rating of "×" and were rejected, whereas the test samples 1 to 6 were given an overall rating of "◎", "○", and "△", and were accepted.

[0124] From the above, it can be said that the decorative sheet and decorative material according to the present invention can suppress a decrease in weather resistance even if deep recesses are formed on the surface. [Industrial Applicability]

[0125] The decorative sheet and decorative material of the present invention can suppress a decrease in weather resistance even when deep recesses are formed on the surface, and therefore can be used extremely beneficially in various industries including the construction industry. [Explanation of symbols]

[0126] 10 Decorative Sheet 11 Colored resin layer 12 Picture layer 15 Transparent resin layer 15a Recess 16 Surface protective layer 16a Recess 20 Decorative Sheet 21 Colored resin layer 23 Anchor layer 24 Transparent adhesive layer 25 Transparent resin layer 25a Recess 27 Base layer 100,200 Cosmetic materials 101 Substrate 102 Adhesive layer

Claims

1. A decorative sheet comprising a pattern layer, a transparent resin layer, and a surface protective layer laminated in this order, and a plurality of recesses formed in the surface protective layer and the transparent resin layer, The surface roughness of the front side is 40 μm or more and 200 μm or less, a ratio (T2 / T1) of a thickness (T2) of the surface protective layer at the bottom of the recess to a thickness (T1) of the surface protective layer between adjacent recesses is 1.2 or more and 2.0 or less; A decorative sheet characterized by:

2. The transparent resin layer has a thickness of 50 μm or more and 150 μm or less.

2. The decorative sheet according to claim 1.

3. The thickness (T1) of the surface protective layer is 1 μm or more and 20 μm or less.

2. The decorative sheet according to claim 1.

4. The total thickness is 100 μm or more and 300 μm or less.

2. The decorative sheet according to claim 1.

5. The surface protective layer and the transparent resin layer contain at least one of an ultraviolet absorber and a light stabilizer.

2. The decorative sheet according to claim 1.

6. The surface protection layer contains an inorganic pigment in the recesses.

2. The decorative sheet according to claim 1.

7. a colored resin layer, the pattern layer, the transparent resin layer, and the surface protection layer are laminated in this order; the colored resin layer contains a vinyl chloride resin, The transparent resin layer contains at least one of vinyl chloride resin and acrylic resin.

2. The decorative sheet according to claim 1.

8. a colored resin layer, the pattern layer, the transparent resin layer, and the surface protection layer are laminated in this order; The colored resin layer and the transparent resin layer contain an olefin resin.

2. The decorative sheet according to claim 1.

9. A decorative sheet according to any one of claims 1 to 8, and a substrate laminated on the side of the decorative sheet opposite the surface protective layer. A cosmetic material characterized by:

Images