Decorative sheets and decorative materials

Abstract

To provide a decorative sheet and a decorative material having excellent antiviral properties and high processability. [Solution] The antiviral agent is provided with a colored layer, a picture pattern layer, and a surface protective layer. The surface protective layer has a first surface protective layer containing an antiviral agent and at least one of a thermosetting resin, an ultraviolet curable resin, and an electron beam curable resin. The amount of the antiviral agent added to the surface protective layer is 0.2% by mass or more and 10% by mass or less, and the average particle size of the antiviral agent is 1 μm or more and 10 μm or less.

Description

[Technical Field]

[0001] The present disclosure relates to decorative sheets and decorative materials. [Background technology]

[0002] Conventionally, decorative sheets that have been made antiviral by adding an antiviral agent have had the problem that the antiviral effect is not exhibited on the surface because most of the antiviral agent is kneaded into the resin and contained within the molded product. In response to this, decorative sheets have been proposed that have excellent antiviral properties by adding an antiviral agent to the outermost surface of the decorative sheet (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-080887 Summary of the Invention [Problem to be solved by the invention]

[0004] Furthermore, when an antiviral agent is kneaded into a molding resin or a coating resin, there is a problem in that the processability (e.g., bending processability) of the decorative sheet is likely to decrease.

[0005] An object of the present disclosure is to provide a decorative sheet and a decorative material that have excellent antiviral properties and high processability. [Means for solving the problem]

[0006] In order to solve the above problems, a decorative sheet according to one embodiment of the present disclosure includes a colored layer, a picture pattern layer, and a surface protective layer, wherein the surface protective layer has a first surface protective layer containing an antiviral agent and at least one of a thermosetting resin, an ultraviolet curable resin, and an electron beam curable resin, wherein the amount of the antiviral agent added to the surface protective layer is 0.2% by mass or more and 10% by mass or less, and the average particle size of the antiviral agent is 1 μm or more and 10 μm or less. [Effects of the Invention]

[0007] A decorative sheet according to one aspect of the present disclosure makes it possible to provide a decorative sheet and decorative material that has high scratch resistance and antiviral properties. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a cross-sectional view schematically showing one configuration example of a decorative sheet according to a first embodiment of the present disclosure. [Figure 2] FIG. 2 is a cross-sectional view schematically showing a modified example of the decorative sheet according to the first embodiment of the present disclosure. [Figure 3] FIG. 2 is a cross-sectional view schematically showing one configuration example of a decorative sheet according to a second embodiment of the present disclosure. [Figure 4] FIG. 10 is a cross-sectional view schematically showing a modified example of a decorative material according to a second embodiment of the present disclosure. [Figure 5] FIG. 10 is a cross-sectional view schematically showing one configuration example of a decorative sheet according to a third embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0009] An embodiment of the present disclosure will be described with reference to the drawings. The configurations shown in the drawings are schematic, and the relationship between thickness and planar dimensions, the thickness ratio of each layer, etc., differ from the actual ones. Furthermore, the embodiments shown below are examples of configurations for embodying the technical idea of ​​the present disclosure, and the technical idea of ​​the present disclosure is not limited to the materials, shapes, structures, etc. of the components described below. The technical idea of ​​the present disclosure can be modified in various ways within the technical scope defined by the claims.

[0010] First Embodiment (Composition of decorative sheet) The basic configuration of the decorative sheet according to the first embodiment of the present disclosure will be described with reference to Fig. 1. Fig. 1 is a cross-sectional view illustrating one example of the configuration of a decorative sheet 10 according to the first embodiment of the present disclosure. As shown in Figure 1, a decorative sheet 10 according to an embodiment of the present disclosure has a picture pattern layer 13 and a surface protective layer 14 laminated in this order on one side of a colored layer 12. The surface protective layer 14 also has a first surface protective layer 14a and a second surface protective layer 14b. Each layer will be described in detail below.

[0011] (colored layer) The colored layer 12 is a layer that serves as the base material of the decorative sheet 10. In this embodiment, a thermoplastic resin can be used for the colored layer 12. There are no particular limitations on the thermoplastic resin, and examples thereof include polyolefin resins such as polyethylene, polypropylene, polymethylpentene, polybutene, ethylene-propylene copolymer, ethylene-α-olefin copolymer, and propylene-α-olefin copolymer; polyolefin-based resins such as olefin-based copolymer resins such as ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, ethylene-(meth)acrylic acid (ester) copolymer, and ethylene-unsaturated carboxylic acid copolymer metal neutralized product (ionomer); polyethylene terephthalate, polybutylene terephthalate, polytetramethylene terephthalate, polyethylene naphthalate, polyethylene terephthalate-isophthalate copolymer, 1,4-cyclohexanedimethanol copolymerized polyethylene terephthalate, poly Examples of the resin that can be used include polyester resins such as acrylate and polycarbonate, acrylic resins such as poly(meth)acrylonitrile, polymethyl(meth)acrylate, polyethyl(meth)acrylate, polybutyl(meth)acrylate and polyacrylamide, polyamide resins such as 6-nylon, 6,6-nylon and 6,10-nylon, styrene resins such as polystyrene, AS resin and ABS resin, vinyl resins such as polyvinyl chloride, polyvinyl acetate, polyvinyl alcohol, polyvinyl acetal and polyvinyl butyral, fluorine-based resins such as polyvinyl fluoride, polyvinylidene fluoride, polytetrafluoroethylene, ethylene-tetrafluoroethylene copolymer and ethylene-perfluoroalkyl vinyl ether copolymer, and mixtures, copolymers, composites and laminates of two or more of these resins.

[0012] Here, many thermoplastic resins have been listed as thermoplastic resins that can be used for the colored layer 12. However, in light of the recent growing social interest in environmental issues, it is not desirable to use thermoplastic resins that contain chlorine (halogen), such as polyvinyl chloride resin, and it is preferable to use non-halogen thermoplastic resins. In particular, from the viewpoints of various physical properties, processability, versatility, economic efficiency, etc., it is most desirable to use polyolefin resins or polyester resins (amorphous or biaxially oriented) as non-halogen thermoplastic resins.

[0013] Polyolefin resins can be appropriately selected from the many types already listed, depending on the intended use of the decorative sheet. In particular, polypropylene resins, i.e., homopolymers or copolymers primarily composed of propylene, are most suitable for general applications. For example, homopolypropylene resins, random polypropylene resins, block polypropylene resins, etc., can be used alone or in appropriate combinations, or resins in which atactic polypropylene is further blended with these. Copolymers containing olefin monomers other than propylene are also acceptable, such as propylene-α-olefin copolymers having polypropylene crystalline portions and containing 15 mol% or more of one or more comonomers of α-olefins having 2 to 20 carbon atoms other than propylene, preferably ethylene, butene-1, 4-methylpentene-1, hexene-1, or octene-1. In addition, modifiers such as low-density polyethylene, ethylene-α-olefin copolymer, ethylene-propylene copolymer rubber, ethylene-propylene-non-conjugated diene copolymer rubber, styrene-butadiene copolymer, or hydrogenated products thereof, which are usually used to soften polypropylene resins, can be added as appropriate.

[0014] Furthermore, if necessary, the colored layer 12 may contain one or more additives selected from various additives such as colorants, 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.

[0015] The thickness of the colored layer 12 is preferably in the range of 40 μm to 150 μm, and more preferably 50 μm to 130 μm. When the thickness of the colored layer 12 is 40 μm or more, it can absorb unevenness and steps in the underlying flooring material, resulting in a good application finish of the decorative sheet 10. Furthermore, when the thickness of the colored layer 12 is 150 μm or less, the colored layer 12 is not formed thicker than necessary, and the manufacturing cost of the decorative sheet 10 can be reduced.

[0016] (Pattern layer) The design layer 13 is formed on the colored layer 12 and is a layer for adding a design to impart a design. This layer can be omitted if the coloring of the colored layer 12 can serve as a substitute. The design layer 13 is formed using a printing ink or paint prepared by dissolving or dispersing a colorant such as a dye or pigment together with a suitable binder resin in a suitable diluent. The printing ink or paint is applied by various printing methods, such as gravure printing or offset printing, or various coating methods, such as gravure coating or roll coating. Examples of binder resins that can be used include, but are not limited to, urethane resins, acrylic resins, vinyl chloride acetate resins, polyimide resins, soluble nitrocellulose, and mixtures thereof. The design can be any desired pattern, such as wood grain, stone grain, fabric grain, abstract patterns, geometric patterns, letters, symbols, solid colors, or combinations thereof. In addition, to improve the hiding power of the decorative sheet 10, a hiding layer made of opaque printing ink or paint containing a large amount of opaque pigments such as titanium dioxide or iron oxide may be provided between the pattern layer 13 and the colored layer 12.

[0017] The thickness of the picture and pattern layer 13 is preferably in the range of 1 μm or more and 10 μm or less. When the thickness of the picture and pattern layer 13 is 1 μm or more, the printing can be made clear. When the thickness of the picture and pattern layer 13 is 10 μm or less, the printing workability when producing the decorative sheet 10 is improved and production costs can be reduced.

[0018] In addition, functional additives such as extender pigments, plasticizers, dispersants, surfactants, tackifiers, adhesive aids, drying agents, curing agents, curing accelerators, and curing retarders may be added to the picture pattern layer 13 to impart various functions.

[0019] Furthermore, the picture and pattern layer 13 may have, for example, a solid colored layer to conceal the color and pattern of the base to which the decorative sheet 10 is attached, and a picture and pattern layer for adding a pattern to impart design features.

[0020] (Surface protective layer) The surface protective layer 14 is a layer formed on the picture pattern layer 13, and is a layer provided to impart functions such as weather resistance, scratch resistance, stain resistance, and designability to the decorative sheet 10. The surface protective layer 14 may be a single layer, or may be formed by stacking multiple layers to form the surface protective layer 14. As shown in Fig. 1, the decorative sheet 10 of this embodiment has two layers, a first surface protective layer 14a and a second surface protective layer 14b, provided as the surface protective layer 14. When the surface protective layer 14 has a structure consisting of one layer (single-layer structure), the first surface protective layer 14a serves as the surface protective layer 14.

[0021] The method for forming the surface protection layer 14, which includes the first surface protection layer 14a and the second surface protection layer 14b, is to form the surface protection layer 14 by applying each layer and curing the coating film using a known coating device, heat drying device, and ultraviolet irradiation device, depending on the type of curable resin.

[0022] The surface protective layer 14 plays an important role in determining the superiority or inferiority of bending workability, weather resistance, scratch resistance, and cleanability. The surface protective layer 14 is primarily composed of a curable resin. That is, it is preferable that the resin component is substantially composed of a curable resin. "Substantially" refers to, for example, 80 parts by mass or more when the total resin is 100 parts by mass. The surface protective layer 14 may optionally contain various additives such as weathering agents, plasticizers, stabilizers, fillers, dispersants, colorants such as dyes and pigments, solvents, UV absorbers, heat stabilizers, light stabilizers, antiblocking agents, catalyst scavengers, colorants, light scattering agents, and gloss adjusters.

[0023] [First surface protective layer] The first surface protective layer 14a is the layer (outermost layer) located on the uppermost surface (outermost surface) of the layers (first surface protective layer 14a, second surface protective layer 14b) that constitute the surface protective layer 14. In this embodiment, the first surface protective layer 14a contains at least one of a thermosetting resin, an ultraviolet-curable resin, and an electron beam-curable resin. Electron beam-curable resins and ultraviolet-curable resins are collectively referred to as ionizing radiation-curable resins. The first surface protective layer 14a can generally be formed by applying a reactive resin to form a coating film, and then curing the coating film by heating or irradiating with ionizing radiation. The characteristics of the first surface protective layer 14a vary depending on the curing method. For example, a first surface protective layer 14a formed from an ionizing radiation-curable resin generally tends to have high hardness and excellent scratch resistance due to a high degree of crosslinking after the curing reaction. On the other hand, the first surface protection layer 14a formed from a thermosetting resin has a relatively low degree of cross-linking and therefore low hardness, and tends to have excellent flexibility in terms of bending and conforming to the substrate.

[0024] The first surface protective layer 14a may contain, as a main component, any one of a thermosetting resin, an ultraviolet curing resin, and an electron beam curing resin. That is, the main component of the first surface protective layer 14a may be a single thermosetting resin, an ultraviolet curing resin, or an ionizing radiation curing resin.

[0025] For example, when decorative sheet 10 is used as a component in fittings that often have complex shapes, flexibility (e.g., processability) is often required. For this reason, for example, in decorative sheet 10 used in fittings, it is preferable to use a thermosetting resin as the main component of first surface protective layer 14a. Furthermore, when scratch resistance rather than flexibility is required for decorative sheet 10, it is preferable to use an ionizing radiation curable resin.

[0026] The main component of the first surface protective layer 14a may also be a mixture of a thermosetting resin, an ultraviolet curing resin, and an electron beam curing resin. When the main component is such a mixture, the ratio of the thermosetting resin, the ultraviolet curing resin, and the electron beam curing resin in the first surface protective layer 14a can be controlled depending on the intended use, thereby enabling the decorative sheet 10 to be used in a variety of applications.

[0027] For example, when the decorative sheet 10 is used for building fixtures, the mixture of thermosetting resin, ultraviolet curing resin, and electron beam curing resin that is the main component of the first surface protective layer 14a preferably contains the thermosetting resin in the largest amount. Specifically, the thermosetting resin in the mixture may be more than 50% by weight, preferably 70% by weight or more, more preferably 75% by weight or more, and even more preferably 80% by weight or more.

[0028] Furthermore, for example, when scratch resistance is required for the decorative sheet 10, the mixture of thermosetting resin, ultraviolet-curable resin, and electron beam-curable resin that is the main component of the first surface protective layer 14a preferably contains at least one of ultraviolet-curable resin or electron beam-curable resin in the largest amount. Specifically, it is sufficient that the ultraviolet-curable resin or electron beam-curable resin accounts for more than 50% by weight of the mixture, preferably 70% by weight or more, more preferably 75% by weight or more, and even more preferably 80% by weight or more.

[0029] In this way, by making the main component of the first surface protection layer 14a, which is the outermost layer of the surface protection layer 14, a mixture of thermosetting resin, ultraviolet curing resin, and electron beam curing resin, scratch resistance is satisfied and at the same time, whitening and cracking of the surface protection layer 14 are less likely to occur during bending processing. However, the performance of decorative sheet 10, such as the scratch resistance and processability described above, is not determined solely by differences in the curing method of the resin used in first surface protective layer 14a. The performance of decorative sheet 10 (here, scratch resistance and processability) is greatly influenced by the material design of the resin itself and the effects of adding additives such as fillers, that is, the physical properties of the various components contained in surface protective layer 14. For this reason, the design of surface protective layer 14 as a whole becomes important.

[0030] [Ionizing radiation curable resin] The ionizing radiation curable resin (including ultraviolet curable resin and electron beam curable resin) used in the first surface protective layer 14a is not particularly limited, and a transparent resin containing as its main component a prepolymer (including oligomer) and / or monomer containing a radically polymerizable double bond in the molecule that can undergo a polymerization / crosslinking reaction when irradiated with ionizing radiation such as ultraviolet light or an electron beam can be used. These prepolymers or monomers can be used alone or in combination. The curing reaction in ionizing radiation curable resins is usually a crosslinking curing reaction.

[0031] Specifically, the prepolymer or monomer may be a compound having, in the molecule, a radically polymerizable unsaturated group such as a (meth)acryloyl group or a (meth)acryloyloxy group, or a cationically polymerizable functional group such as an epoxy group, etc. Here, the (meth)acryloyl group means an acryloyl group or a methacryloyl group.

[0032] Examples of prepolymers having a radically polymerizable unsaturated group include polyester (meth)acrylate, urethane (meth)acrylate, epoxy (meth)acrylate, melamine (meth)acrylate, triazine (meth)acrylate, silicone (meth)acrylate, etc. The molecular weight of these is usually preferably about 250 to 100,000.

[0033] Examples of the monomer having a radically polymerizable unsaturated group include monofunctional monomers such as methyl(meth)acrylate, 2-ethylhexyl(meth)acrylate, and phenoxyethyl(meth)acrylate. Examples of the polyfunctional monomers include diethylene glycol di(meth)acrylate, propylene glycol di(meth)acrylate, trimethylpropane tri(meth)acrylate, trimethylolpropane ethylene oxide tri(meth)acrylate, dipentaerythritol tetra(meth)acrylate, dipentaerythritol penta(meth)acrylate, and dipentaerythritol hexa(meth)acrylate.

[0034] Examples of prepolymers having a cationically polymerizable functional group include prepolymers of epoxy resins such as bisphenol-type epoxy resins and novolac-type epoxy compounds, and vinyl ether resins such as fatty acid vinyl ethers and aromatic vinyl ethers.

[0035] Furthermore, the prepolymers described above are preferably polyene / thiol-based prepolymers formed by combining polyenes and polythiols. Examples of thiols include polythiols such as trimethylolpropane trithioglycolate and pentaerythritol tetrathioglycolate. Examples of polyenes include polyurethanes formed by diols and diisocyanates, to which allyl alcohol is added at both ends.

[0036] The ionizing radiation used to cure the ionizing radiation curable resin is electromagnetic waves or charged particles having enough energy to cause a curing reaction of the molecules in the ionizing radiation curable resin (composition). Usually, ultraviolet rays or electron beams are used, but visible light, X-rays, ion beams, etc. may also be used.

[0037] Usable ultraviolet light sources include ultra-high pressure mercury lamps, high pressure mercury lamps, low pressure mercury lamps, carbon arc lamps, black lights, metal halide lamps, etc. The wavelength of ultraviolet light is preferably in the range of 190 nm to 380 nm.

[0038] As the electron beam source, various electron beam accelerators can be used, such as Cockcroft-Walton type, Van de Graaf type, resonant transformer type, insulating core transformer type, or linear type, dynamitron type, high frequency type, etc. Among these, those capable of irradiating electrons having an energy in the range of 100 keV to 1000 keV are particularly preferred, and those capable of irradiating electrons having an energy in the range of 100 keV to 300 keV are more preferred.

[0039] [Thermosetting resin] The thermosetting resin used for the first surface protective layer 14a is not particularly limited, but examples thereof include two-component curing urethane-based resins. The two-component curing urethane-based resin is not particularly limited, but examples thereof include those containing a polyol component (such as acrylic polyol, polyester polyol, polyether polyol, or epoxy polyol) having an OH group as a main component and an isocyanate component (such as tolylene diisocyanate, hexamethylene diisocyanate, or metaxylene diisocyanate) as a curing agent. The thermosetting resin is not limited to these examples, and one-component reactive curing polyurethane-based resins, one-component or two-component reactive curing epoxy-based resins, and the like may also be used.

[0040] A surfactant is added to the surface protective layer 14. The surfactant contains at least one of a cationic surfactant, an amphoteric surfactant, and a nonionic surfactant. The addition of the surfactant improves the compatibility between the silver-based antiviral agent and the binder of the surface protective layer, making it possible to obtain a decorative sheet in which concentration variations due to precipitation of the antiviral agent during coating, etc., are suppressed.

[0041] Furthermore, the thickness of the first surface protective layer 14a is preferably in the range of 3 μm to 15 μm. If the thickness of the first surface protective layer 14a is 3 μm or more, various resistances such as scratch resistance, abrasion resistance, and weather resistance are improved. If the thickness of the first surface protective layer 14a is 15 μm or less, there is no need to use an unnecessarily large amount of resin material, and costs can be reduced.

[0042] [Antiviral Agents] The surface protective layer 14 contains an antiviral agent that improves antiviral properties. The antiviral agent is preferably a silver-based material. Examples of the antiviral agent that can be used include inorganic antibacterial agents such as antibacterial zeolite, antibacterial apatite, and antibacterial zirconia, which are formed by incorporating metal ions (silver ions, copper ions, or zinc ions) into inorganic compounds such as zeolite, apatite, and zirconia. Other antiviral agents that can be used include zinc pyridinone, 2-(4-thiazolyl)-benzimidazole, 10,10-oxybisphenoxanodine, organic titanium sulfur halogen compounds, and pyridine-2-thiol oxide, but silver-based antiviral agents are superior in terms of antiviral effect. The antiviral agent may also be a silver-based material supported on an inorganic material, thereby providing a decorative sheet 10 with excellent durability of virus protection.

[0043] The amount of antiviral agent added to surface protective layer 14 is within the range of 0.2% by mass to 10% by mass. When the amount of antiviral agent added is 0.2% by mass or more, the antiviral agent acts effectively, improving antiviral properties. When the amount of antiviral agent added is 10% by mass or less, scratch resistance is improved.

[0044] The average particle size of the antiviral agent is desirably 0.5 to 2 times the thickness of surface protective layer 14. In other words, when the average particle size of the antiviral agent is Φ and the thickness of the surface protective layer is D, it is desirably a relationship of 0.5≦Φ≦2D. When the average particle size of the antiviral agent is 0.5 to 2 times the size of surface protective layer 14, the contact surface with the antiviral agent is enlarged and the surface area of ​​the antiviral agent itself is enlarged, resulting in improved antiviral properties. Furthermore, the average particle size of the antiviral agent is preferably 1 μm or more and 10 μm or less. When the average particle size of the antiviral agent is 1 μm or more, the contact area between surface protective layer 14 and the antiviral agent is increased, resulting in good antiviral properties. When the average particle size of the antiviral agent is 10 μm or less, scratch resistance is improved.

[0045] Furthermore, it is preferable that the antiviral agent has multiple particle size peaks. Specifically, it is preferable that the antiviral agent has two particle size peaks, including a first peak in the range of 1 μm to 5 μm and a second peak in the range of 5 μm to 10 μm. Here, the second peak of the antiviral agent particle size is set to a value greater than the first peak. The presence of multiple particle size peaks for the antiviral agent further improves the packing density of the antiviral agent, allowing a larger amount of antiviral agent to be added. This increases the contact area with the antiviral agent and the surface area of ​​the antiviral agent itself, thereby improving antiviral properties.

[0046] Furthermore, in the decorative sheet 10 according to this embodiment, for example, as a measure to improve contamination resistance, a silicone-based component (e.g., silicone resin) or a fluorine-based component (e.g., fluorine resin) may be set on the outermost surface (first surface protective layer 14a) of the decorative sheet 10.

[0047] [Silicone resin] When a silicone resin is used, it is preferable to use a modified silicone resin in view of issues of adhesion and compatibility with the surroundings. When the curable resin constituting the first surface protective layer 14a is formed from an ultraviolet curable resin or an electron beam curable resin, the modified silicone is preferably an ionizing radiation-reactive modified silicone resin. When the curable resin constituting the first surface protective layer 14a is formed from a thermosetting resin, the modified silicone is preferably a thermoreactive modified silicone resin. When the curable resin constituting the first surface protective layer 14a is formed from a mixture of an ionizing radiation-curable resin and a thermosetting resin, the modified silicone is preferably a modified silicone resin having at least one of ionizing radiation reactivity and thermoreactivity.

[0048] Modified silicones can be classified into reactive and non-reactive silicones. Examples of heat-reactive modified silicones include monoamine-modified silicones, diamine-modified silicones, epoxy-modified silicones, carbinol-modified silicones, carboxy-modified silicones, mercapto-modified silicones, silanol-modified silicones, alcohol-modified silicones, and diol-modified silicones. Examples of ionizing radiation-reactive modified silicones include acrylic-modified silicones and methacrylic-modified silicones. Examples of non-reactive modified silicones include polyether-modified silicones, aralkyl-modified silicones, long-chain alkyl-modified silicones, and higher fatty acid ester-modified silicones. Manufacturers of these modified silicones include Shin-Etsu Chemical Co., Ltd., Dow Corning Toray Co., Ltd., Momentive Performance Materials Japan LLC, and Wacker Asahi Kasei Silicone Co., Ltd.

[0049] [Fluorine resin] Fluorine resins are widely known to exhibit minimal surface tension and are suitable as contamination-resistant materials. Examples of fluororesins contained in the first surface protective layer 14a include tetrafluoroethylene resin, tetrafluoroethylene-ethylene copolymer, and polyvinylidene fluoride, among others. Many other derivatives can also be used. Manufacturers of these fluororesins include Daikin Industries, Ltd. and DuPont-Mitsui Fluorochemicals Co., Ltd. The amount of fluororesin contained in the first surface protective layer 14a is preferably 10 parts by mass or more and 100 parts by mass or less, and more preferably 20 parts by mass or more. The fluororesin itself may be a curable resin. That is, a portion of the fluororesin may also serve as a portion of the curable resin that is the main component of the surface protective layer 14 (first surface protective layer 14a, second surface protective layer 14b). For example, the entire resin component of the second surface protective layer 14b may be a fluororesin.

[0050] In this way, in the decorative sheet 10 according to this embodiment, the outermost layer of the surface protective layer 14, i.e., the first surface protective layer 14a, may contain at least one of a silicon-based component and a fluorine-based component. This improves the contamination resistance of the decorative sheet 10. Improved contamination resistance can prevent viruses from remaining on the surface of the decorative sheet 10 for a long period of time, and as a result, the antiviral properties can be further improved.

[0051] In addition, in order to improve the adhesive strength of each layer of the decorative sheet 10, an adhesive layer containing a two-component curing urethane adhesive that uses an isocyanate-based curing agent may be provided between the pattern layer 13 and the surface protection layer 14.

[0052] [Second surface protective layer] The second surface protective layer 14b is a layer (inner layer) formed between the outermost layer and the picture pattern layer 13 among the layers (first surface protective layer 14a, second surface protective layer 14b) that make up the surface protective layer 14. In this embodiment, the second surface protective layer 14b, like the first surface protective layer 14a, contains at least one of a thermosetting resin, an ultraviolet curing resin, and an electron beam curing resin. Note that the thermosetting resin, the ultraviolet curing resin, and the electron beam curing resin are similar to the curing resin contained in the first surface protective layer 14a, so a description thereof will be omitted. The second surface protective layer 14b may contain an antiviral agent and a surfactant, similar to the first surface protective layer 14a. In this case, the antiviral agent contained in the second surface protective layer 14b may be the same material as the antiviral agent contained in the first surface protective layer 14a, or may be a different material from the antiviral agent contained in the first surface protective layer 14a.

[0053] (Variation) A modified example of the decorative sheet according to the first embodiment will be described with reference to FIG. 2. FIG. 2 is a cross-sectional schematic diagram illustrating one structural example of a decorative sheet 20 according to a modified example of the first embodiment. As shown in FIG. 2, an embossed portion 25 may be formed on the surface of the surface protective layer 14 of the decorative sheet 10, i.e., the surface of the first surface protective layer 14a, to impart a given design. Typically, the uneven pattern is formed by embossing. The embossing method is not particularly limited. A known sheet-fed or rotary embossing machine is used for embossing. Examples of the uneven shape of the embossed portion 25 include the vascular grooves of a wood grain board, the uneven surface of a stone slab (such as a cleavage plane of granite), fabric surface texture, matte finish, sand grain, hairline, and linear grooves.

[0054] <Effects of the first embodiment> The decorative sheet 10 according to this embodiment has the following effects. (1) The amount of antiviral agent added to the decorative sheet 10 of this embodiment is 0.2% by mass or more and 10% by mass or less. This configuration allows for greater antiviral properties to be achieved without affecting the strength of the entire decorative sheet. (2) The average particle size of the antiviral agent in the decorative sheet 10 of this embodiment is 1 μm or more and 10 μm or less. According to this configuration, the contact area of ​​the antiviral agent is increased, and the surface area of ​​the antiviral agent itself is also increased, thereby achieving high antiviral properties.

[0055] Second Embodiment (Composition of decorative sheet) A decorative sheet according to a second embodiment of the present disclosure will be described with reference to Fig. 3. Fig. 3 is a cross-sectional view illustrating one configuration example of a decorative sheet 30 according to the second embodiment of the present disclosure.

[0056] The decorative sheet 30 has a picture pattern layer 13, a transparent resin layer 36, and a surface protection layer 14 laminated in this order on one side of the colored layer 12. That is, the decorative sheet 30 differs from the decorative sheet 10 according to the first embodiment in that it includes a transparent resin layer 36 .

[0057] The following describes the transparent resin layer 36. Note that the layers other than the transparent resin layer 36 (the colored layer 12, the picture pattern layer 13, and the surface protective layer 14) have the same configuration as the layers of the decorative sheet 10, and therefore descriptions thereof will be omitted.

[0058] (Transparent resin layer) As shown in FIG. 3, the transparent resin layer 36 is a layer formed between the picture pattern layer 13 and the surface protection layer 14. The thickness of the transparent resin layer 36 is preferably, for example, 30 μm or more and 200 μm or less. When the thickness of the transparent resin layer 36 is 30 μm or more, the scratch resistance of the transparent resin layer 36 against abrasion and scratches on the surface of the decorative sheet is sufficiently high. Furthermore, when the thickness of the transparent resin layer 36 is 200 μm or less, the bendability of the decorative sheet is not too high, and the decorative sheet can be applied in close contact with the floor material even if the floor material to which it is attached is not flat.

[0059] [Resin material] The resin material constituting the transparent resin layer 36 can be, for example, a thermoplastic resin, similar to that of the colored layer 12. The thermoplastic resin is not particularly limited, and examples thereof include polyolefin resins such as polyethylene, polypropylene, polymethylpentene, polybutene, ethylene-propylene copolymer, ethylene-α-olefin copolymer, and propylene-α-olefin copolymer; polyolefin-based resins such as olefin-based copolymer resins such as ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, ethylene-(meth)acrylic acid (ester) copolymer, and ethylene-unsaturated carboxylic acid copolymer metal neutralized product (ionomer); polyethylene terephthalate, polybutylene terephthalate, polytetramethylene terephthalate, polyethylene naphthalate, polyethylene terephthalate-isophthalate copolymer, 1,4-cyclohexanedimethanol copolymerized polyethylene terephthalate, poly Examples of the resin that can be used include polyester resins such as acrylate and polycarbonate, acrylic resins such as poly(meth)acrylonitrile, polymethyl(meth)acrylate, polyethyl(meth)acrylate, polybutyl(meth)acrylate and polyacrylamide, polyamide resins such as 6-nylon, 6,6-nylon and 6,10-nylon, styrene resins such as polystyrene, AS resin and ABS resin, vinyl resins such as polyvinyl chloride, polyvinyl acetate, polyvinyl alcohol, polyvinyl acetal and polyvinyl butyral, fluorine-based resins such as polyvinyl fluoride, polyvinylidene fluoride, polytetrafluoroethylene, ethylene-tetrafluoroethylene copolymer and ethylene-perfluoroalkyl vinyl ether copolymer, and mixtures, copolymers, composites and laminates of two or more of these resins.

[0060] Here, many thermoplastic resins have been listed as thermoplastic resins that can be used for the transparent resin layer 36. However, in light of the recent growing social interest in environmental issues, it is not desirable to use thermoplastic resins that contain chlorine (halogen), such as polyvinyl chloride resin, and it is preferable to use non-halogen thermoplastic resins. In particular, from the viewpoints of various physical properties, processability, versatility, economic efficiency, etc., it is most desirable to use polyolefin resins or polyester resins (amorphous or biaxially oriented) as non-halogen thermoplastic resins.

[0061] Polyolefin resins can be appropriately selected from the many types already listed, depending on the intended use of the decorative sheet. In particular, polypropylene resins, i.e., homopolymers or copolymers primarily composed of propylene, are most suitable for general applications. For example, homopolypropylene resins, random polypropylene resins, block polypropylene resins, etc., can be used alone or in appropriate combinations, or resins in which atactic polypropylene is further blended with these. Copolymers containing olefin monomers other than propylene are also acceptable, such as propylene-α-olefin copolymers having polypropylene crystalline portions and containing 15 mol% or more of one or more comonomers of α-olefins having 2 to 20 carbon atoms other than propylene, preferably ethylene, butene-1, 4-methylpentene-1, hexene-1, or octene-1. In addition, modifiers such as low-density polyethylene, ethylene-α-olefin copolymer, ethylene-propylene copolymer rubber, ethylene-propylene-non-conjugated diene copolymer rubber, styrene-butadiene copolymer, or hydrogenated products thereof, which are usually used to soften polypropylene resins, can be added as appropriate.

[0062] If necessary, one or more additives selected from a variety of additives such as colorants, fillers, UV absorbers, light stabilizers, heat stabilizers, antioxidants, antistatic agents, lubricants, flame retardants, antibacterial agents, antifungal agents, antifriction agents, light scattering agents, and gloss adjusters may be added to the transparent resin layer 36. Preferably, the transparent resin layer 36 has a transparency (colorless transparent, colored transparent, translucent) sufficient to allow the pattern of the picture pattern layer 13 to be seen from the surface (upper surface) of the decorative sheet 30.

[0063] Furthermore, the transparent resin layer 36 may contain an antiviral agent that improves antiviral properties, similar to the surface protective layer 14. By including an antiviral agent in the surface protective layer 14, antiviral properties can be maintained on the outermost surface of the decorative sheet. By including an antiviral agent in both the transparent resin layer 36 and the surface protective layer 14, antiviral properties are maintained even when the transparent resin layer 36 is exposed due to wear of the surface protective layer 14. For this reason, it is more preferable that an antiviral agent be included in both the surface protective layer 14 and the transparent resin layer 36. Note that the antiviral agent has the same structure as the antiviral agent included in the surface protective layer 14 of the decorative sheet 10, and therefore a description thereof will be omitted.

[0064] (Variation) A modified example of the decorative sheet according to the second embodiment will be described with reference to FIG. 4. FIG. 4 is a cross-sectional schematic diagram illustrating one configuration example of a decorative sheet 40 according to a modified example of the second embodiment. As shown in FIG. 4, the surface of the transparent resin layer 36 of the decorative sheet 40 may be formed with an embossed portion 45, which has been embossed to impart a given design. As with the embossed portion 25 of the decorative sheet 20 according to the first embodiment, the uneven shape of the embossed portion 45 may be, for example, a wood grain vessel groove, a stone slab surface unevenness (such as a granite cleavage plane), a cloth surface texture, a matte finish, a sand grain, a hairline, or a linear groove. By forming the embossed portion 45 in the transparent resin layer 36, a texture is imparted to the decorative sheet 40, thereby improving the design.

[0065] <Effects of the second embodiment> The decorative sheet 30 according to this embodiment has the following advantages in addition to the advantages of the first embodiment. (3) The decorative sheet 30 of this embodiment includes a transparent resin layer 36 . This configuration improves the strength of the entire decorative sheet and provides cushioning properties.

[0066] <Third embodiment> A decorative material according to a third embodiment of the present disclosure will be described with reference to Fig. 5. Fig. 5 is a cross-sectional view illustrating one configuration example of a decorative material 50 according to a third embodiment of the present disclosure. (Composition of decorative materials) The decorative material 50 has a pattern layer 13 and a surface protection layer 14 laminated in this order on one side of the colored layer 12, and an adhesive layer 57 and a base material for building materials 58 provided on the other side of the colored layer 12. That is, the decorative material 50 differs from the decorative sheet 10 according to the first embodiment in that it includes an adhesive layer 57 and a base material 58 for fittings.

[0067] The following describes the adhesive layer 57 and the fixture base material 58. Note that the layers other than the adhesive layer 57 and the fixture base material 58 (the colored layer 12, the picture pattern layer 13, and the surface protective layer 14) have the same configuration as the layers of the decorative sheet 10, and therefore descriptions thereof will be omitted.

[0068] (adhesive layer) The adhesive layer 57 is optionally applied to improve adhesion with the adhesive used to bond the colored layer 12 of the decorative material 50 to a substrate provided on the side opposite the picture / pattern layer 13. For example, if the substrate is made of a wood-based material, a vinyl acetate emulsion adhesive, a two-component curing urethane adhesive, or the like is used. Therefore, it is desirable to design the adhesive layer 57 from a resin that is compatible with these adhesives. Examples of suitable adhesives include urethane, acrylic, ethylene-vinyl acetate copolymer, vinyl chloride-vinyl acetate copolymer, and polyester. Two-component curing urethane primers containing a blend of polyester polyol and polyisocyanate are particularly preferred. Adding inorganic powders, such as silica, barium sulfate, or calcium carbonate, can effectively prevent blocking during storage and improve adhesion through anchoring effects.

[0069] (Base material for fittings) Materials that can be used as the base material 58 for the fixture include tropical plywood, particle board, medium-density fiberboard (hereinafter referred to as MDF), and ordinary plywood as specified by the Japanese Agricultural Standards. Substrates made of olefin-based resins containing wood powder can also be used. The thickness of the base material 58 for the fixture is preferably between 3 mm and 25 mm. The base material 58 for the fixture may be made of metal such as aluminum, resin such as plastic, or a composite material of these. By forming the base material 58 for the fixture, it is possible to provide a decorative sheet 40 that can reduce scratches caused by shoe heels or pebbles during heavy foot traffic. In this embodiment, the adhesive layer 56 and the base material for building materials 58 are bonded to the decorative sheet 10, but the decorative material may also be formed using the decorative sheet 20, decorative sheet 30 or decorative sheet 40 instead of the decorative sheet 10.

[0070] <Effects of the third embodiment> The decorative material 50 according to this embodiment has the following advantages in addition to the advantages of the first and second embodiments. (4) The decorative material 50 of this embodiment includes an adhesive layer 57 and a base material 58 for fittings. This configuration can prevent scratches on the heels of shoes or small stones from occurring during heavy walking. [Example]

[0071] The present disclosure will be explained in more detail below using examples, but the present disclosure is not limited to these examples. Example 1 A colored thermoplastic resin layer made of an olefin material was used as the base sheet. A wood grain pattern was printed on the base sheet using a gravure printer to form a picture layer. A transparent sheet made of an olefin material was laminated onto the picture layer to form a transparent resin layer. The transparent resin layer had a thickness of 80 μm. A thermosetting resin (UC Clear, manufactured by DIC Graphics Corporation) was then applied to a thickness of 3 μm as the inner layer (second surface protective layer) of the surface protective layer. Furthermore, a thermosetting resin (UC Clear, manufactured by DIC Graphics Corporation) was applied to a thickness of 3 μm as the outermost layer (first surface protective layer) of the surface protective layer. A silver-based inorganic additive (Biocide TB-B100, manufactured by Taisho Technox Corporation) was blended into the outermost thermosetting resin layer as an antiviral agent at a solid content ratio of 0.2 mass%. The antiviral agent had a structure in which silver ions were supported on an inorganic material. The average particle size (Φ) of the antiviral agent was 5 μm. At this time, the first peak of the particle size of the antiviral agent was set to 3 μm, and the second peak was set to 7 μm. Furthermore, the average particle size (Φ) of the antiviral agent relative to the thickness D (3 μm in this example) of the outermost layer (first surface protective layer) of the surface protective layer was set to 1.67 D. The thermosetting resin was then cured by heating. Thus, the decorative sheet of Example 1 was produced.

[0072] <Example 2> A decorative sheet of Example 2 was produced in the same manner as Example 1, except that the amount of antiviral agent added was changed to 7% by mass.

[0073] Example 3 The main component of the outermost layer (first surface protective layer) of the surface protective layer was changed to an ultraviolet-curable resin (urethane acrylate resin manufactured by DIC Graphics Corporation). The thickness of the outermost layer was changed to 6 μm. Otherwise, a decorative sheet of Example 3 was produced in the same manner as Example 1.

[0074] Example 4 A decorative sheet of Example 4 was produced in the same manner as Example 1, except that the main component of the outermost surface protective layer (first surface protective layer) was changed to an electron beam curable resin.

[0075] <Example 5> A decorative sheet of Example 5 was produced in the same manner as Example 1, except that the amount of antiviral agent added was changed to 10% by mass.

[0076] Example 6 A decorative sheet of Example 6 was produced in the same manner as Example 1, except that the amount of antiviral agent added was changed to 14% by mass.

[0077] Example 7 A decorative sheet of Example 7 was produced in the same manner as Example 2, except that the average particle size (Φ) of the antiviral agent was changed to 1 μm.

[0078] Example 8 The decorative sheet of Example 7 was produced in the same manner as in Example 2, except that the average particle size (Φ) of the antiviral agent was changed to 10 μm. Example 9 The decorative sheet of Example 9 was produced in the same manner as in Example 2, except that the first peak particle size of the antiviral agent was changed to 0.1 μm.

[0079] Example 10 A decorative sheet of Example 10 was produced in the same manner as in Example 2, except that the first peak particle size of the antiviral agent was changed to 1 μm.

[0080] Example 11 A decorative sheet of Example 11 was produced in the same manner as in Example 2, except that the first peak particle size of the antiviral agent was changed to 5 μm.

[0081] Example 12 A decorative sheet of Example 12 was produced in the same manner as Example 2, except that the first peak particle size of the antiviral agent was changed to 6 μm.

[0082] Example 13 A decorative sheet of Example 13 was produced in the same manner as Example 2, except that the second peak particle size of the antiviral agent was changed to 4 μm.

[0083] Example 14 A decorative sheet of Example 14 was produced in the same manner as Example 2, except that the second peak particle size of the antiviral agent was changed to 5 μm.

[0084] Example 15 A decorative sheet of Example 15 was produced in the same manner as Example 2, except that the second peak particle size of the antiviral agent was changed to 10 μm.

[0085] Example 16 The decorative sheet of Example 16 was produced in the same manner as Example 2, except that the second peak particle size of the antiviral agent was changed to 20 μm.

[0086] Example 17 The decorative sheet of Example 17 was produced in the same manner as Example 2, except that the first peak of the particle size of the antiviral agent was changed to 0.1 μm and the second peak was changed to 4 μm.

[0087] Example 18 The decorative sheet of Example 18 was produced in the same manner as in Example 2, except that the first peak of the particle size of the antiviral agent was changed to 10 μm and the second peak was changed to 20 μm.

[0088] Example 19 A decorative sheet of Example 19 was produced in the same manner as in Example 2, except that the thickness of the surface protective layer was changed to 2 μm.

[0089] Example 20 A decorative sheet of Example 20 was produced in the same manner as in Example 2, except that the thickness of the surface protective layer was changed to 3 μm.

[0090] <Example 21> A decorative sheet of Example 21 was produced in the same manner as in Example 2, except that the thickness of the surface protective layer was changed to 15 μm.

[0091] <Example 22> A decorative sheet of Example 22 was produced in the same manner as in Example 2, except that the thickness of the surface protective layer was changed to 25 μm.

[0092] Example 23 A decorative sheet of Example 23 was produced in the same manner as in Example 2, except that the thickness of the transparent resin layer was changed to 20 μm.

[0093] Example 24 A decorative sheet of Example 24 was produced in the same manner as in Example 2, except that the thickness of the transparent resin layer was changed to 30 μm.

[0094] Example 25 A decorative sheet of Example 25 was produced in the same manner as in Example 2, except that the thickness of the transparent resin layer was changed to 200 μm.

[0095] <Example 26> A decorative sheet of Example 26 was produced in the same manner as in Example 2, except that the thickness of the transparent resin layer was changed to 210 μm.

[0096] <Comparative Example 1> A decorative sheet of Comparative Example 1 was produced in the same manner as in Example 28, except that the addition of an antiviral agent to the surface protective layer was omitted.

[0097] <Comparative Example 2> A decorative sheet of Comparative Example 2 was produced in the same manner as in Example 1, except that the amount of antiviral agent added was changed to 0.1% by mass.

[0098] <Comparative Example 3> A decorative sheet of Comparative Example 3 was produced in the same manner as in Example 2, except that the average particle size (Φ) of the antiviral agent was changed to 0.5 μm.

[0099] <Comparative Example 4> A decorative sheet of Comparative Example 4 was produced in the same manner as in Example 2, except that the average particle size (Φ) of the antiviral agent was changed to 13 μm.

[0100] <Evaluation> The decorative sheets obtained in Examples 1 to 26 and Comparative Examples 1 to 4 were evaluated for antiviral performance and bending processability by the following methods. <Evaluation> [Antiviral performance] The decorative sheets of Examples 1 to 26 and Comparative Examples 1 to 4 were subjected to antiviral tests in accordance with ISO 21702. A 50 mm square test sample was placed in a sterile petri dish, and 0.4 mL of a virus solution was inoculated onto the sample. The virus solution used here was a virus solution containing an enveloped virus (influenza virus). The sample was then covered with a 40 mm square polyethylene film. After the petri dish was covered with a lid, the sample and virus were inoculated under conditions of a temperature of 25°C and a humidity of 90% or higher. After a predetermined time (24 hours), 10 mL of SCDLP medium was poured into the petri dish, and the virus was washed out. The virus infectivity of the washed-out solution was measured using the plaque method. <Measurement of virus infectivity (plaque method)> Host cells were cultured in monolayer on a 6-well plate, and 0.1 mL of serially diluted washout solution was inoculated into each well. After incubation for 1 hour at 37°C in 5% CO2, the virus was allowed to adsorb to the cells. After that, agar medium was poured into the 6-well plate and incubated for an additional 2-3 days. After incubation, the cells were fixed and stained, and the number of plaques formed was counted. <Calculation of virus infectivity> According to the following formula, 1cm of sample2 The virus infectivity per 1000 cells was calculated. V = (10 × C × D × N) / A V: 1cm sample 2 Viral infectivity per (PFU / cm 2 ) C: Number of plaques measured D: Dilution ratio of the well in which the plaques were counted N: SCDLP amount A: Contact area between sample and virus (area of ​​polyethylene film) <Calculation of antiviral activity value> The antiviral activity value was calculated according to the following formula: where the antiviral activity value is 2log 10 In the above cases, it was determined that there was an antiviral effect. Antiviral activity value = log(Vb) - log(Vc) Log(Vb): 1cm of unprocessed sample after 24 hours 2 Common logarithm of viral infectivity per Log(Vc): 1cm of antiviral treated sample after 24 hours 2 Common logarithm of viral infectivity per The calculated antiviral activity values ​​were evaluated using the following four levels: ◎, ○, ×. <Evaluation criteria> ◎: Antiviral activity value 3 logs 10 If it is more than ○: Antiviral activity value 2 log 10 If it is more than ×: Antiviral activity value 2log 10 If it is less than

[0101] [Bending workability] The surface of the 3mm thick MDF (hardwood) used as the base material for the fixture was coated with 100g / m2 of a two-component water-based emulsion adhesive (Rikabond manufactured by Chuo Rika Kogyo Co., Ltd., weight ratio BA-10L / BA-11B = 100:2.5) in a wet state. 2 After coating, the decorative sheets of Examples 1 to 14 and Comparative Examples 1 to 5 were attached thereto, and cured for 24 hours to obtain the decorative building materials of Examples 1 to 26 and Comparative Examples 1 to 4. These decorative building materials were V-cut, and the appearance was confirmed by visually inspecting the top of the fold. For the V-cut, a V-shaped groove was made in the decorative building material from the side where the decorative sheet was not attached to the boundary where the base material and the decorative sheet were attached, so as not to scratch the decorative sheet. Next, the base material was folded 90 degrees along the V-shaped groove, with the side where the decorative sheet 1 was attached forming a mountain fold. <Evaluation criteria> ⊚: No cracking or whitening of the surface protective layer at the top of the bent portion. ◯: Almost no cracking or whitening of the surface protective layer at the top of the bent portion. △: Cracks and whitening of the surface protective layer occurred only partially at the top of the bent portion. ×: Cracks and whitening of the surface protective layer occurred at the top of the bent portion. The evaluation results are shown in Table 1.

[0102] [Table 1]

[0103] As shown in Table 1, the evaluation results of Examples 1 to 26 and Comparative Examples 1 and 2 showed that when the amount of the antiviral agent added was 0.2 mass% or more, as in Examples 1 to 26, the antiviral activity was higher than when the amount of the antiviral agent added was less than 0.2 mass%, as in Comparative Examples 1 and 2.

[0104] Furthermore, the evaluation results of Examples 1 to 26 and Comparative Examples 3 and 4 showed that when the average particle size (Φ) of the antiviral agent was 1 μm or more and 10 μm or less, as in Examples 1 to 26, the antiviral activity was higher than when the average particle size (Φ) of the antiviral agent was less than 1 μm and more than 10 μm, as in Comparative Example 3.

[0105] The decorative sheet and decorative material of the present disclosure are not limited to the above-described embodiments and examples, and various modifications are possible within the scope that does not impair the features of the invention. [Explanation of symbols]

[0106] 10, 20, 30, 40: Decorative sheet 50: Cosmetic materials 12: Colored layer 13: Pattern layer 14: Surface protective layer 14a: 1st surface protective layer 14b: Second surface protective layer 25, 45: Embossed part 36: Transparent resin layer 57: Adhesive layer 58: Base material for building materials

Claims

1. A colored layer; A pattern layer and A surface protective layer; Equipped with the surface protective layer includes a first surface protective layer containing an antiviral agent and at least one of a thermosetting resin, an ultraviolet curable resin, and an electron beam curable resin, and a second surface protective layer provided between the first surface protective layer and the picture pattern layer, the amount of the antiviral agent added to the surface protective layer is 0.2% by mass or more and 10% by mass or less, the antiviral agent has an average particle size of 1 μm or more and 10 μm or less, the antiviral agent contains at least one of a silver-based antiviral agent, an antibacterial zeolite, an antibacterial apatite, an antibacterial zirconia, zinc pyrithione, 2-(4-thiazolyl)-benzimidazole, 10,10-oxybisphenoxarsine, an organic nitrogen-sulfur-halogen-based agent, and pyridine-2-thiol-oxide; The first surface protective layer is a decorative sheet containing a fluorine resin.

2. A colored layer; A pattern layer and A surface protective layer; Equipped with the surface protective layer has a first surface protective layer containing an antiviral agent and at least one of a thermosetting resin, an ultraviolet curable resin, and an electron beam curable resin, the amount of the antiviral agent added to the surface protective layer is 0.2% by mass or more and 10% by mass or less, the antiviral agent has an average particle size of 1 μm or more and 10 μm or less, the antiviral agent contains at least one of a silver-based antiviral agent, an antibacterial zeolite, an antibacterial apatite, an antibacterial zirconia, zinc pyrithione, 2-(4-thiazolyl)-benzimidazole, 10,10-oxybisphenoxarsine, an organic nitrogen-sulfur-halogen-based agent, and pyridine-2-thiol-oxide; A decorative sheet in which the antiviral agent has multiple particle size peaks.

3. A colored layer; A pattern layer and A surface protective layer; Equipped with the surface protective layer has a first surface protective layer containing an antiviral agent and at least one of a thermosetting resin, an ultraviolet curable resin, and an electron beam curable resin, the amount of the antiviral agent added to the surface protective layer is 0.2% by mass or more and 10% by mass or less, the antiviral agent has an average particle size of 1 μm or more and 10 μm or less, the antiviral agent contains at least one of a silver-based antiviral agent, an antibacterial zeolite, an antibacterial apatite, an antibacterial zirconia, zinc pyrithione, 2-(4-thiazolyl)-benzimidazole, 10,10-oxybisphenoxarsine, an organic nitrogen-sulfur-halogen-based agent, and pyridine-2-thiol-oxide; A transparent resin layer is further provided between the picture pattern layer and the surface protection layer, The first surface protective layer is a decorative sheet containing a fluorine resin.

4. The antiviral agent is a silver-based material. The decorative sheet according to any one of claims 1 to 3.

5. The thickness of the first surface protective layer is 3 μm or more and 15 μm or less. The decorative sheet according to any one of claims 1 to 4.

6. 6. The decorative sheet according to claim 1, wherein the average particle size of the antiviral agent is 0.5 to 2 times the thickness of the surface protective layer.

7. The peaks of the particle size of the antiviral agent include a first peak in the range of 1 μm or more and 5 μm or less and a second peak in the range of 5 μm or more and 10 μm or less. The decorative sheet according to claim 2.

8. The antiviral agent is characterized in that it is supported by an inorganic material. The decorative sheet according to any one of claims 1 to 7.

9. The first surface protective layer contains at least one of a silicone resin and a fluororesin. The decorative sheet according to claim 2.

10. The first surface protective layer further contains a surfactant. The decorative sheet according to any one of claims 1 to 9.

11. The surfactant includes at least one of a cationic surfactant, an amphoteric surfactant, and a nonionic surfactant. The decorative sheet according to claim 10.

12. The surface protective layer has an embossed surface. The decorative sheet according to any one of claims 1 to 11.

13. The thickness of the transparent resin layer is 30 μm or more and 200 μm or less. The decorative sheet according to claim 3.

14. The transparent resin layer has an embossed surface. The decorative sheet according to claim 3 or 13.

15. The antiviral agent contains at least one of antibacterial zirconia, zinc pyrithione, 2-(4-thiazolyl)-benzimidazole, 10,10-oxybisphenoxarsine, organic nitrogen-sulfur-halogen system, and pyridine-2-thiol-oxide. The decorative sheet according to claim 1 or 3.

16. The decorative sheet according to any one of claims 1 to 15, A base material for building fixtures attached to the back surface of the colored layer of the decorative sheet; A decorative material comprising:

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