Decorative sheet and decorative material

Abstract

To provide a decorative sheet and a decorative material which can suppress deterioration of a surface state.SOLUTION: A decorative material 10 includes a substrate 9 and a decorative sheet 1, wherein the decorative sheet 1 includes a colored raw fabric layer 2, a pattern layer 3, and a surface protective layer 6 formed using a thermosetting resin added with an antiviral agent and at least one of an ultraviolet curable resin and an electron beam-curable resin, an added amount of the antiviral agent with respect to 100 mass% of the surface protective layer 6 is within a range of 0.2 mass% or more and 15 mass% or less, and an average particle diameter of the antiviral agent is within a range of 1 μm or more and 10 μm or less, when the average particle diameter of the antiviral agent is represented by φ (μm), a cumulative 10% particle diameter in particle size distribution of the antiviral agent is 0.4 φ or more, a cumulative 90% particle diameter in the particle size distribution of the antiviral agent is 3.5 φ or more, and when thickness of the surface protective layer 6 is represented by D (μm), a relation of 0.5D≤φ≤2D is established.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a decorative sheet and a decorative material. [Background technology]

[0002] As a technology relating to decorative sheets, for example, as disclosed in Patent Document 1, a technology has been proposed in which the surface protective layer of a decorative sheet is configured by laminating two layers, one of which contains an ionizing radiation curable resin and further contains a deodorant. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2021-142749 A Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, decorative sheets may be required to have antiviral or antibacterial properties, including the technology disclosed in Patent Document 1. However, in conventional decorative sheets, including the technology disclosed in Patent Document 1, an antiviral agent or antibacterial agent must be present on the surface of the surface protective layer in order to impart antiviral or antibacterial properties. For this reason, when multiple decorative sheets to which antiviral or antibacterial properties have been imparted come into contact with each other and are displaced relative to each other during transportation, etc., there is a problem that the surface condition of the decorative sheets deteriorates due to the influence of the antiviral agent or antibacterial agent.

[0005] In view of the above-mentioned problems, an object of the present invention is to provide a decorative sheet and a decorative material that are capable of suppressing deterioration of the surface condition. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, one aspect of the present invention is a decorative sheet including a colored raw fabric layer, a picture pattern layer, and a surface protective layer. The picture pattern layer is a layer laminated on one side of the colored raw fabric layer and formed with a picture. The surface protective layer is a layer laminated on one side of the picture pattern layer and formed using a thermosetting resin to which an antiviral agent has been added, and at least one of an ultraviolet curable resin and an electron beam curable resin. The amount of the antiviral agent added relative to 100 mass% of the surface protective layer is in the range of 0.2 mass% to 15 mass%, and the average particle size of the antiviral agent is in the range of 1 μm to 10 μm. In addition, when the average particle size of the antiviral agent is φ (μm), the cumulative 10% particle size in the particle size distribution of the antiviral agent is 0.4φ or more, and the cumulative 90% particle size in the particle size distribution of the antiviral agent is 3.5φ or more. Furthermore, when the average particle size of the antiviral agent is φ (μm) and the thickness of the surface protective layer is D (μm), the relationship 0.5D≦φ≦2D holds.

[0007] In order to solve the above-mentioned problems, one aspect of the present invention is a decorative material comprising a substrate and a decorative sheet laminated on at least one surface of the substrate. Effect of the Invention

[0008] According to one aspect of the present invention, it is possible to provide a decorative sheet and a decorative material that are capable of suppressing deterioration of the surface condition. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a cross-sectional view showing the configuration of a decorative sheet and a decorative material in the first embodiment. [Diagram 2] FIG. 4 is a cross-sectional view showing the configuration of a decorative sheet and a decorative material in a modified example of the first embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present technology will be described with reference to the drawings. In the description of the drawings, the same or similar parts are denoted with the same or similar reference numerals, and duplicated descriptions are omitted. Each drawing is schematic and may differ from the actual one. The embodiments shown below are examples of devices and methods for embodying the technical idea of ​​the present technology, and the technical idea of ​​the present technology is not limited to the devices and methods exemplified in the following embodiments. The technical idea of ​​the present technology can be modified in various ways within the technical scope described in the claims. In addition, the directions of "left and right" and "up and down" in the following description are merely definitions for the convenience of explanation and do not limit the technical idea of ​​the present invention. Therefore, for example, if the paper is rotated 90 degrees, "left and right" and "up and down" are read interchangeably, and of course, if the paper is rotated 180 degrees, "left" becomes "right" and "right" becomes "left".

[0011] First embodiment Hereinafter, the configuration of a decorative sheet 1 in a first embodiment will be described with reference to FIG. As shown in FIG. 1, the decorative sheet 1 comprises a colored base fabric layer 2, a picture design layer 3, an adhesive resin layer 4, a transparent resin layer 5, a surface protective layer 6, and a primer layer 8.

[0012] <Colored original fabric layer> The colored base fabric layer 2 is a layer that serves as the base material of the decorative sheet 1 . In the first embodiment, as an example, a case will be described in which a thermoplastic resin is used as the material of the colored raw fabric layer 2. In addition to thermoplastic resin, the material of the colored raw fabric layer 2 can be various types of paper such as thin paper, titanium paper, resin-impregnated paper, resin-mixed paper, inter-paper reinforced paper, bleached or unbleached kraft paper, linter paper, fine paper, coated paper, inorganic paper, flame-retardant paper, cardboard, and Japanese paper, as well as woven fabric and nonwoven fabric.

[0013] 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, polyaryl ether, and the like. Examples of the resin that can be used include polyester 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 resins such as polyvinyl fluoride, polyvinylidene fluoride, polytetrafluoroethylene, ethylene-tetrafluoroethylene copolymer, and ethylene-perfluoroalkyl vinyl ether copolymer; and mixtures, copolymers, composites, laminates, and the like of two or more of these resins.

[0014] Here, many thermoplastic resins have been listed as thermoplastic resins that can be used for the colored raw fabric layer 2, but in view of the recent increase in social interest in environmental issues, it is not desirable to use thermoplastic resins that contain chlorine (halogen), such as polyvinyl chloride resins, and it is desirable to use non-halogen thermoplastic resins. In particular, from the standpoints 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. The polyolefin resin may be appropriately selected from the many types already listed according to the purpose of use of the decorative sheet. In particular, polypropylene resins, i.e., homopolymers or copolymers mainly composed of propylene, are most suitable for general use. For example, homopolypropylene resins, random polypropylene resins, block polypropylene resins, etc. may be used alone or in appropriate combination, and resins in which atactic polypropylene is further added may be used. In addition, copolymers containing olefin monomers other than propylene may be used, and examples thereof include propylene-α-olefin copolymers having polypropylene crystal parts and containing 15 mol% or more of α-olefins having 2 to 20 carbon atoms other than propylene, preferably ethylene, butene-1, 4-methylpentene-1, hexene-1, or octene-1 comonomers. In addition, it is possible to appropriately add 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.

[0015] Furthermore, if necessary, one or more additives selected from various 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 colored raw material layer 2. The thickness of the colored raw fabric layer 2 is preferably in the range of 40 [μm] to 150 [μm], and more preferably in the range of 50 [μm] to 130 [μm]. This is because when the thickness of the colored raw fabric layer 2 is 40 [μm] or more, it is possible to absorb unevenness and steps of the floor material as the base and improve the finish of the decorative sheet 1. In addition, when the thickness of the colored raw fabric layer 2 is 150 [μm] or less, the colored raw fabric layer 2 is not formed thicker than necessary, and the manufacturing cost of the decorative sheet 1 can be reduced.

[0016] <Pattern layer> The picture pattern layer 3 is laminated on one surface (the upper surface in FIG. 1) of the colored base fabric layer 2, and is a layer for adding a picture pattern to impart design. Note that the picture pattern layer 3 can be omitted if it can be substituted by coloring the colored base fabric layer 2. The picture pattern layer 3 is formed using printing ink, paint, etc. The printing ink, paint, etc. for forming the picture pattern layer 3 is formed, for example, by dissolving or dispersing a colorant such as a dye or pigment together with a suitable binder resin in a suitable dilution solvent.

[0017] The printing ink or paint forming the picture pattern layer 3 is applied by using various printing methods such as gravure printing or offset printing, or various coating methods such as gravure coating or roll coating. The weight of the picture pattern layer 3 after drying is preferably 0.1 [g / m 2 ] or more than 15[g / m 2 ] or less, more preferably 3 [g / m 2 ] or more than 10[g / m 2 ] or less, more preferably 6 [g / m 2 ] or more than 9 [g / m 2 ] is within the following range.

[0018] As the pattern of the picture pattern layer 3, any pattern can be used, for example, a wood grain pattern, a stone pattern, a fabric pattern, an abstract pattern, a geometric pattern, letters, symbols, a solid color, or a combination thereof. In order to improve the concealing properties of the decorative sheet 1, a concealing layer may be provided between the picture pattern layer 3 and the colored base fabric layer 2. The concealing layer is formed, for example, using an opaque printing ink or paint that contains a large amount of opaque pigments such as titanium dioxide or iron oxide.

[0019] In addition, the picture pattern layer 3 may be configured to have, for example, a solid base layer to conceal the color and pattern of the base to which the decorative sheet 1 is attached, and a pattern layer to add a picture to impart design features. The thickness of the picture pattern layer 3 is set within the range of 1 μm to 10 μm, preferably 0.1 μm to 10 μm, more preferably 0.5 μm to 5 μm, and even more preferably 0.7 μm to 3 μm. This is because when the thickness of the picture pattern layer 3 is 1 μm or more, it is possible to make the printing clear. Also, when the thickness of the picture pattern layer 3 is 10 μm or less, it is possible to improve the printing workability when manufacturing the decorative sheet 1 and to suppress the manufacturing cost.

[0020] The decorative sheet 1 may have a plurality of picture pattern layers 3 . In addition, functional additives such as extender pigments, plasticizers, dispersants, surfactants, tackifiers, adhesive aids, drying agents, hardeners, hardening accelerators, and hardening retarders may be added to the picture pattern layer 3 in order to impart various functions. In addition, the picture pattern layer 3 may be configured to have, for example, a solid colored base fabric layer to conceal the color and pattern of the base to which the decorative sheet 1 is attached, and a picture pattern layer for adding a pattern to impart design appeal.

[0021] <Adhesive resin layer> The adhesive resin layer 4 is laminated on one surface of the picture pattern layer 3 (the upper surface in FIG. 1), and is a layer used for bonding the picture pattern layer 3 and the transparent resin layer 5 together. The adhesive resin layer 4 may be made of, for example, a urethane-based, acrylic-based, ethylene-vinyl acetate copolymer, vinyl chloride-vinyl acetate copolymer, polyester-based, polyolefin-based, etc. In particular, polyolefin-based resins are preferred in terms of adhesion to the transparent resin layer 5.

[0022] <Transparent resin layer> The transparent resin layer 5 is a layer laminated on one surface of the adhesive resin layer 4 (the upper surface in FIG. 1). The thickness of the transparent resin layer 5 is, for example, in the range of 10 μm to 200 μm, in the range of 30 μm to 150 μm, preferably in the range of 55 μm to 100 μm, and more preferably in the range of 60 μm to 80 μm. This is because when the transparent resin layer 5 has a thickness of 10 μm or more, it is possible to absorb unevenness and steps of the underlying flooring material and the like, thereby improving the finish of the application of the decorative sheet 1. Also, when the transparent resin layer 5 has a thickness of 150 μm or less, the transparent resin layer 5 is not formed thicker than necessary, and the manufacturing costs of the decorative sheet 1 can be reduced.

[0023] The density of the transparent resin layer 5 is 0.90 [g / cm 3 ] or more 0.96[g / cm 3 ] or less, and preferably 0.90 [g / cm 3 ] or more 0.91[g / cm 3 It is more preferable that the content is within the range of 0.1 to 1.0 μm. This is because the density of the transparent resin layer 5 is 0.90 [g / cm 3 This is because when the density of the transparent resin layer 5 is 0.96 [g / cm 3 This is because, when the thickness is 100 mm or less, the transparency and mechanical strength of the transparent resin layer 5 can be increased.

[0024] The density of the transparent resin layer 5 is a value measured according to the method A of JIS K7112-1980 after annealing as described in JIS K6760-1995. The method for producing the transparent resin layer 5 is not particularly limited, and a conventionally known method can be used. In the first embodiment, a case where the transparent resin layer 5 is formed by extrusion molding will be described. Moreover, the extrusion molding is preferably performed by a T-die method or an inflation method.

[0025] If necessary, the transparent resin layer 5 may contain one or more additives selected from various 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. The transparent resin layer 5 preferably has a degree of transparency (colorless transparent, colored transparent, translucent) that allows the design of the design pattern layer 3 to be seen from the surface (upper surface) of the decorative sheet 1.

[0026] <Surface protective layer> The surface protective layer 6 is laminated on one surface of the transparent resin layer 5 (the upper surface in FIG. 1), and is a layer provided to impart functions such as weather resistance, scratch resistance, stain resistance, and design to the decorative sheet 1. That is, the surface protective layer 6 is a layer laminated on one surface of the colored original fabric layer 2. The transparent resin layer 5 is a layer disposed between the colored original fabric layer 2 and the surface protective layer 6. The surface protective layer 6 also plays an important role in determining the superiority or inferiority of bending workability, weather resistance, scratch resistance, and cleanability. The surface protective layer 6 is mainly composed of a curable resin. In other words, 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 entire resin is taken as 100 parts by mass.

[0027] The weight of the surface protective layer 6 after drying is preferably 0.1 [g / m 2 ] or more than 15[g / m 2 ] or less, more preferably 3 [g / m 2 ] or more than 10[g / m 2 ] or less, more preferably 6 [g / m 2 ] or more than 9 [g / m 2 ] is within the following range. The thickness of the surface protection layer 6 is preferably in the range of 0.1 μm to 10 μm, more preferably in the range of 3 μm to 10 μm, and even more preferably in the range of 6 μm to 9 μm.

[0028] Furthermore, the surface protective layer 6 may contain various additives, such as weathering agents, plasticizers, stabilizers, fillers, dispersants, colorants such as dyes and pigments, solvents, ultraviolet absorbers, heat stabilizers, light stabilizers, antiblocking agents, catalyst scatterers, colorants, light scattering agents, and gloss adjusters, as required. Furthermore, the surface protective layer 6 may contain functional additives, such as antibacterial agents and antifungal agents, as required.

[0029] In the first embodiment, a case will be described in which the surface protective layer 6 has a structure (multi-layer structure) composed of two layers, a first surface protective layer 6a and a second surface protective layer 6b, as shown in Fig. 1. When the surface protective layer 6 has a multi-layer structure, the surface protective layer 6 may have a structure composed of three or more layers.

[0030] [First surface protective layer] The first surface protective layer 6a is a layer (inner layer) formed between the picture pattern layer 3 and the second surface protective layer 6b among the layers constituting the surface protective layer 6 (first surface protective layer 6a, second surface protective layer 6b). The first surface protective layer 6a is formed using at least one of a thermosetting resin to which an antiviral agent has been added, an ultraviolet-curable resin, and an electron beam-curable resin. In the following description, the electron beam curable resin and the ultraviolet ray curable resin may be collectively referred to as the ionizing radiation curable resin.

[0031] The first surface protective layer 6a may contain an antiviral agent and a surfactant. When forming the surface protection layer 6 having the first surface protection layer 6a, coating and curing of the coating film are performed using known equipment such as a coating device, a heat drying device, an ultraviolet irradiation device, etc., depending on the type of curable resin used as the main component of the first surface protection layer 6a.

[0032] [Second surface protective layer] The second surface protective layer 6b is the layer (outermost layer) located on the outermost surface (outermost surface) of the layers constituting the surface protective layer 6. In other words, the second surface protective layer 6b is a layer that forms the surface of the decorative sheet 1. The hardness of the second surface protective layer 6b measured by a pencil hardness test according to JIS K 5600 is within the range of 4B or more and 2H or less, and more preferably within the range of 3B or more and 3H or less.

[0033] This is because, if the hardness of the second surface protective layer 6b is within the range of 4B or more and 2H or less, when the embossment 7 described below is formed on the surface protective layer 6, it is possible to suppress coating cracking of the surface protective layer 6 and cracks that occur in the coating of the surface protective layer 6 when the embossment 7 is formed. The second surface protective layer 6b is formed using at least one of a thermosetting resin to which an antiviral agent has been added, an ultraviolet-curable resin, and an electron beam-curable resin.

[0034] The second surface protective layer 6b can generally be formed by a method in which a coating film is formed by coating a reactive resin, and then the coating film is cured by heating or exposure to ionizing radiation. The thickness of the second surface protective layer 6b is preferably within the range of 3 μm to 15 μm. This is because when the thickness of the second surface protective layer 6b is 3 μm or more, various resistances such as scratch resistance, abrasion resistance, weather resistance, etc. are improved. In addition, when the thickness of the second surface protective layer 6b is 15 μm or less, there is no need to use a larger amount of resin material than necessary, which makes it possible to reduce costs. The total thickness of the first surface protective layer 6a and the second surface protective layer 6b is, for example, within a range of 3 μm to 15 μm.

[0035] In addition, the second surface protective layer 6b has different characteristics depending on the curing method. For example, the second surface protective layer 6b formed of an ionizing radiation curable resin generally has a high degree of crosslinking after the curing reaction, so it has high hardness and tends to have excellent scratch resistance. On the other hand, the second surface protective layer 6b formed of a thermosetting resin has a relatively low degree of crosslinking, so it has low hardness and tends to have excellent flexibility in terms of bending and conformity to the colored raw fabric layer 2. The second surface protective layer 6b may be mainly composed of any one of a thermosetting resin, an ultraviolet curing resin, and an electron beam curing resin. In other words, the main component of the second surface protective layer 6b may be a thermosetting resin alone, an ultraviolet curing resin alone, or an ionizing radiation curing resin alone.

[0036] For example, when the decorative sheet 1 is used as a component of a fitting, which often has a complex shape, flexibility (e.g., suitability for processing) is often required. For this reason, for example, in the decorative sheet 1 used for fittings, it is preferable to use a thermosetting resin as the main component of the second surface protective layer 6b. Also, when scratch resistance is required rather than flexibility in the decorative sheet 1, it is preferable to use an ionizing radiation curing resin as the main component of the second surface protective layer 6b. The main component of the second surface protective layer 6b may be a mixture of a thermosetting resin and at least one of an ultraviolet-curable resin and an electron beam-curable resin. When a mixture is used as the main component, the ratio of the thermosetting resin, the ultraviolet-curable resin, and the electron beam-curable resin in the second surface protective layer 6b can be controlled depending on the application of the decorative sheet 1, thereby making it possible to use the decorative sheet 1 in a manner suited to the requirements of various applications.

[0037] For example, when the decorative sheet 1 is used for fittings, the mixture that is the main component of the second surface protective layer 6b 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. Furthermore, for example, when scratch resistance is required for the decorative sheet 1, it is preferable that the mixture that is the main component of the second surface protective layer 6b contains the ultraviolet curable resin or the electron beam curable resin in the largest amount. Specifically, it is sufficient that the ultraviolet curable resin or the electron beam curable resin in the mixture exceeds 50% by weight, and it is preferable that it accounts for 70% by weight or more, more preferably 75% by weight or more, and even more preferably 80% by weight or more.

[0038] In this way, by using a mixture of a thermosetting resin, an ultraviolet-curable resin, and an electron beam-curable resin as the main component of the second surface protective layer 6b, which is the outermost layer of the surface protective layer 6, it is possible to improve the scratch resistance of the second surface protective layer 6b. In addition, it is possible to suppress the whitening and cracking of the second surface protective layer 6b during bending. However, the performance of the decorative sheet 1, such as scratch resistance and processability, is not determined solely by the difference in the curing method of the resin used in the second surface protective layer 6b. The performance of the decorative sheet 1 (here, scratch resistance and processability) is greatly influenced by the material design of the resin itself and the addition of additives such as fillers, that is, the physical properties of the various components contained in the second surface protective layer 6b. For this reason, the design of the second surface protective layer 6b as a whole is important.

[0039] [Thermosetting resin containing an antiviral agent] The thermosetting resin contained in the surface protective layer 6 is not particularly limited, but for example, a two-component curing urethane-based resin can be used. The two-component curing urethane-based resin is not particularly limited, but for example, a resin containing a polyol component having an OH group as a main component (acrylic polyol, polyester polyol, polyether polyol, epoxy polyol, etc.) and an isocyanate component as a curing agent component (tolylene diisocyanate, hexamethylene diisocyanate, metaxylene diisocyanate, etc.) can be used. In addition, the thermosetting resin is not limited to these, and one-component reactive curing polyurethane-based resin, one-component or two-component reactive curing epoxy-based resin, etc. may be used.

[0040] The surface protective layer 6 may contain a surfactant. The surfactant includes 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 1 in which concentration variations due to precipitation of the antiviral agent during coating, etc., are suppressed.

[0041] [Antiviral Agents] The thermosetting resin contained in the surface protective layer 6 contains an antiviral agent that improves the antiviral properties. The antiviral agent is preferably a silver-based material (silver-based antiviral agent). As the antiviral agent, inorganic antibacterial agents such as antibacterial zeolite, antibacterial apatite, and antibacterial zirconia formed by incorporating any one of metal ions, such as silver ions, copper ions, and zinc ions, into inorganic compounds such as zeolite, apatite, and zirconia can be used. As antiviral agents, zinc pyridinone, 2-(4-thiazolyl)-benzimidazole, 10,10-oxybisphenoxanodine, organic nitrogen sulfur halogen-based agents, pyridine-2-thiol oxide, etc. can be used, but in terms of antiviral effect, silver-based antiviral agents are superior.

[0042] The antiviral agent may be, for example, a silver-based material supported on an inorganic material, which makes it possible to obtain a decorative sheet 1 with excellent durability of the antiviral effect. The amount of the antiviral agent added relative to 100 mass% of the surface protective layer 6 is within the range of 0.2 mass [%] or more and 15 mass [%] or less. This is because when the amount of the antiviral agent added is 0.2 mass [%] or more, the antiviral agent acts effectively and the antiviral properties are improved, and when the amount of the antiviral agent added is 15 mass [%] or less, scratch resistance is improved.

[0043] The average particle size of the antiviral agent is within a range of 0.5 to 2 times the thickness of surface protective layer 6 (second surface protective layer 6b). That is, when the average particle size of the antiviral agent is φ (μm) and the thickness of surface protective layer 6 is D (μm), the relationship 0.5≦φ≦2D is established. This is because when the average particle size of the antiviral agent is within the range of 0.5 to 2 times that of surface protective layer 6, it is possible to increase the contact area with the antiviral agent and also to increase the surface area of ​​the antiviral agent itself, thereby improving the antiviral properties.

[0044] In addition, the average particle size of the antiviral agent is desirably 1 μm or more and 10 μm or less. This is because when the average particle size of the antiviral agent is 1 [μm] or more, the contact area between the virus and the antiviral agent is increased, resulting in good antiviral properties. In addition, when the average particle size of the antiviral agent is 10 [μm] or less, scratch resistance is improved.

[0045] In addition, in the first embodiment, for example, as a measure to improve contamination resistance, a silicone-based component (e.g., silicone resin) and a fluorine-based component (e.g., fluorine resin) are added to the surface protective layer 6 (second surface protective layer 6b), which is the outermost surface of the decorative sheet 1.

[0046] [Silicone resin] When using a silicone resin, it is preferable to use a modified silicone in view of the problems of adhesion and compatibility with the surroundings. When the curable resin constituting the surface protective layer 6 (second surface protective layer 6b) is formed from an ultraviolet curable resin or an electron beam curable resin, the modified silicone is preferably a modified silicone resin reactive to ionizing radiation. When the curable resin constituting the surface protective layer 6 (second surface protective layer 6b) is formed from a thermosetting resin, the modified silicone is preferably a modified silicone resin reactive to heat. When the curable resin constituting the surface protective layer 6 (second surface protective layer 6b) 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 heat reactivity. Modified silicones can be classified into reactive modified silicones 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. Modified silicone manufacturers include Shin-Etsu Chemical Co., Ltd., Toray Dow Corning Co., Ltd., Momentive Performance Materials Japan LLC, and Asahi Kasei Wacker Silicone Co., Ltd.

[0047] [Fluororesin] Fluorine resin is widely known to have a minimum level of surface tension and is suitable as a contamination-resistant material. Examples of fluororesin contained in the surface protective layer 6 (second surface protective layer 6b) include tetrafluoroethylene resin, tetrafluoroethylene-ethylene copolymer, polyvinylidene fluoride, and many other derivatives can be used. Manufacturers of these fluororesins include Daikin Industries, Ltd. and Mitsui DuPont Fluorochemicals Co., Ltd. The amount of fluororesin contained in the surface protective layer 6 (second surface protective layer 6b) is preferably in the range of 10 parts by mass to 100 parts by mass, more preferably in the range of 20 parts by mass to 100 parts by mass. Here, the fluororesin itself may be a curable resin. That is, a part of the fluororesin may also serve as a part of the curable resin that is the main component of the surface protective layer 6 (second surface protective layer 6b). Thus, in the decorative sheet 1 according to the first embodiment, the outermost layer of the surface protective layer 6, i.e., the second surface protective layer 6b, may contain at least one of a silicon-based component and a fluorine-based component. This makes it possible to improve the contamination resistance of the decorative sheet 1. Improved contamination resistance makes it possible to inhibit viruses from remaining on the surface of the decorative sheet 1 for a long period of time, and as a result, it becomes possible to further improve the antiviral properties.

[0048] [Ionizing radiation curable resin] The ionizing radiation curable resin (including ultraviolet curable resin and electron beam curable resin) used in the surface protective layer 6 (second surface protective layer 6b) is not particularly limited, and it is possible to use a transparent resin whose main component is at least one of a prepolymer (including oligomer) and a monomer containing a radically polymerizable double bond in the molecule that can undergo polymerization and crosslinking reaction when irradiated with ionizing radiation such as ultraviolet light or an electron beam. 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. Specifically, the above-mentioned 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 cationic polymerizable functional group such as an epoxy group, etc. Here, the (meth)acryloyl group means an acryloyl group or a methacryloyl group.

[0049] 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. 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.

[0050] 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. In addition, as the above-mentioned prepolymer, a polyene / thiol-based prepolymer obtained by combining a polyene and a polythiol is also preferable. As the thiol, for example, a polythiol such as trimethylolpropane trithioglycolate or pentaerythritol tetrathioglycolate can be mentioned. As the polyene, for example, a polyurethane obtained by adding allyl alcohol to both ends of a diol and a diisocyanate can be mentioned.

[0051] The ionizing radiation used to cure the ionizing radiation curable resin is electromagnetic waves or charged particles having energy capable of causing 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. As the ultraviolet light source, for example, a light source such as an ultra-high pressure mercury lamp, a high pressure mercury lamp, a low pressure mercury lamp, a carbon arc lamp, a black light, a metal halide lamp, etc. The wavelength of the ultraviolet light is usually preferably within the range of 190 [nm] or more and 380 [nm] or less. As the electron beam source, various electron beam accelerators can be used, such as Cockcroft-Walton type, Van de Graff type, resonant transformer type, insulating core transformer type, linear type, dynamitron type, high frequency type, etc. Among them, 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.

[0052] As described above, the surface protective layer 6 is formed using a thermosetting resin containing an antiviral agent, and at least one of an ultraviolet-curable resin and an electron beam-curable resin. 1, embossments 7 are formed at multiple locations on the transparent resin layer 5 and the surface protective layer 6. That is, the embossments 7 are formed by recesses provided at multiple locations on the transparent resin layer 5 and the surface protective layer 6. Therefore, the surface of the surface protection layer 6 opposite to the surface facing the picture pattern layer 3 (the upper surface in FIG. 1) is embossed to form the embossments 7. In addition, the surface of the transparent resin layer 5 opposite to the surface facing the picture pattern layer 3 (the upper surface in FIG. 1) is embossed to form the embossments 7.

[0053] As described above, among the multiple laminated layers (first surface protective layer 6a, second surface protective layer 6b) that form the surface protective layer 6, the second surface protective layer 6b, which is the layer located furthest from the picture pattern layer 3, is formed using a thermosetting resin with an antiviral agent added and at least one of an ultraviolet-curable resin and an electron beam-curable resin. Furthermore, among the multiple laminated layers that form the surface protection layer 6, the second surface protection layer 6b, which is the layer located at the position furthest from the picture pattern layer 3, is doped with at least one of a silicon-based component and a fluorine-based component. In addition, of the multiple laminated layers that form the surface protection layer 6, the second surface protection layer 6b, which is the layer located farthest from the picture pattern layer 3, is embossed on its surface opposite to the surface facing the picture pattern layer 3 (the upper surface in Figure 1), to form an embossment 7.

[0054] <Primer layer> The primer layer 8 is a base layer for improving the adhesion and corrosion resistance between the colored original fabric layer 2 and the substrate 9 . Moreover, the primer layer 8 is laminated on the other surface of the colored original fabric layer 2 (the lower surface in FIG. 4).

[0055] Furthermore, the primer layer 8 is formed using, for example, a polyester resin, an organic additive, a pigment, and the like. The primer layer 8 may contain an anti-rust pigment for the purpose of improving corrosion resistance. The thickness of the primer layer 8 is, for example, within the range of 1 μm to 10 μm.

[0056] (Decorative materials) The decorative material 10 comprises a decorative sheet 1 and a substrate 9 . The substrate 9 is formed into a plate shape using, for example, a wood board, an inorganic board, a metal plate, or the like, and has a decorative sheet 1 laminated on one surface (the upper surface in FIG. 1).

[0057] The above-described first embodiment is one example of the present invention, and the present invention is not limited to the above-described first embodiment. Various modifications can be made depending on the design, etc., even if the modifications are in a form other than the first embodiment, as long as they do not deviate from the technical idea of ​​the present invention.

[0058] (Effects of the First Embodiment) The decorative sheet 1 of the first embodiment can achieve the effects described below. (1) A colored raw fabric layer 2, a picture pattern layer 3 laminated on one side of the colored raw fabric layer 2 and having a picture formed thereon, and a surface protective layer 6 laminated on one side of the picture pattern layer 3 and formed using at least one of a thermosetting resin to which an antiviral agent has been added, an ultraviolet curable resin, and an electron beam curable resin. The amount of the antiviral agent added to 100% by mass of the surface protective layer 6 is within a range of 0.2% by mass to 15% by mass, and the average particle size of the antiviral agent is within a range of 1 μm to 10 μm. In addition, when the average particle size of the antiviral agent is φ (μm), the cumulative 10% particle size in the particle size distribution of the antiviral agent is 0.4φ or more, and the cumulative 90% particle size in the particle size distribution of the antiviral agent is 3.5φ or more. In addition, when the average particle size of the antiviral agent is φ (μm) and the thickness of the surface protective layer 6 is D (μm), the relationship of 0.5D≦φ≦2D is established.

[0059] As a result, it is possible to impart antiviral and antibacterial properties to the decorative sheet 1. In addition, for example, it is possible to prevent the antiviral agent from protruding from the surface protective layer 6. This makes it possible to provide a decorative sheet 1 that can prevent deterioration of the surface condition, such as a change in gloss, a decrease in design, or a change in pattern, even when the surface protective layers 6 of multiple decorative sheets 1 come into contact with each other and are displaced relative to each other during transportation, etc. It is also possible to provide a decorative sheet 1 that can prevent a decrease in design.

[0060] (2) 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 system, and pyridine-2-thiol-oxide. As a result, it is possible to impart antiviral and antibacterial properties to the decorative sheet 1 using commonly available materials.

[0061] (3) The surface protective layer 6 contains at least one of a silicon-based component and a fluorine-based component. As a result, it is possible to impart contamination resistance to the surface protective layer 6 through the use of silicon-based or fluorine-based components, making it possible to prevent viruses and the like adhering to the decorative sheet 1 from remaining on the surface.

[0062] (4) The surface of the surface protection layer 6 opposite to the surface facing the picture pattern layer 3 is embossed. As a result, the design of the decorative sheet 1 can be improved.

[0063] (5) The device further includes a transparent resin layer 5 disposed between the picture design layer 3 and the surface protection layer 6. As a result, the strength of the decorative sheet 1 can be improved.

[0064] (6) The surface protective layer 6 is formed of a plurality of laminated layers (first surface protective layer 6a, second surface protective layer 6b). Among the plurality of layers constituting the surface protective layer 6, the layer (second surface protective layer 6b) located at the position farthest from the picture pattern layer 3 is formed using a thermosetting resin to which an antiviral agent has been added, and at least one of an ultraviolet-curable resin and an electron beam-curable resin. As a result, it is possible to impart antiviral and antibacterial properties to the second surface protective layer 6b that forms the surface of the decorative sheet 1, and it is also possible to inhibit deterioration of the surface condition.

[0065] (7) Of the multiple layers (first surface protective layer 6a, second surface protective layer 6b) that form the surface protective layer 6, the layer (second surface protective layer 6b) that is located farthest from the pattern layer 3 is doped with at least one of a silicon-based component and a fluorine-based component. As a result, it is possible to impart contamination resistance to the second surface protective layer 6b through the use of silicon-based or fluorine-based components, making it possible to prevent viruses and the like adhering to the decorative sheet 1 from remaining on the surface.

[0066] (8) Of the multiple layers (first surface protective layer 6a, second surface protective layer 6b) that form the surface protective layer 6, the layer (second surface protective layer 6b) that is located farthest from the picture pattern layer 3 is embossed on the surface opposite to the surface facing the picture pattern layer 3. As a result, the design of the decorative sheet 1 can be improved.

[0067] The decorative material 10 of the first embodiment can achieve the effects described below. (9) The device comprises a substrate 9 and a decorative sheet 1 laminated on at least one surface of the substrate 9. As a result, it is possible to impart antiviral and antibacterial properties to the cosmetic material 10.

[0068] In addition, for example, it is possible to prevent the antiviral agent from protruding from the surface protective layer 6. This makes it possible to provide a decorative material 10 that can prevent deterioration of the surface condition, such as a change in gloss, a decrease in design, or a change in pattern, even when the surface protective layers 6 of the decorative sheets 1 provided on a plurality of decorative materials 10 come into contact with each other and are displaced relative to each other during transportation, etc. It is also possible to provide a decorative material 10 that can prevent a decrease in design.

[0069] <Modification of the first embodiment> (1) In the first embodiment, the decorative sheet 1 is configured to have an embossment 7 formed therein, but this is not limited to the above. That is, for example, the decorative sheet 1 may be configured to have no embossment formed therein, as shown in Fig. 2. Furthermore, the decorative sheet 1 may be configured to have no adhesive resin layer 4, transparent resin layer 5, or primer layer 8, as shown in Fig. 2.

[0070] (2) In the first embodiment, the decorative material 10 is configured to include a decorative sheet 1 laminated on one side of the substrate 9, but this is not limited to the above. That is, the decorative material 10 may be configured to include a decorative sheet 1 laminated on the other side of the substrate 9 in addition to the one side of the substrate 9.

[0071] (3) In the first embodiment, the surface protection layer 6 is configured to include a first surface protection layer 6a and a second surface protection layer 6b, but this is not limited to this, and the surface protection layer 6 may be configured to be formed of only a single layer. EXAMPLES

[0072] With reference to the first embodiment, the decorative sheets of Examples 1 to 6 and the decorative sheets of Comparative Examples 1 to 3 will be described below.

[0073] Example 1 The colored base layer has a basis weight of 30 [g / m 2 The sheet was formed using a reinforced inter-sheet paper. The picture pattern layer was formed on one surface of the colored base fabric layer by applying ink containing polyurethane resin and nitrocellulose resin by gravure printing. The transparent resin layer was formed using a transparent sheet made of vinyl chloride material.

[0074] The surface protective layer was formed as a single layer using a gravure printing method with an acrylic polyol-based thermosetting resin to which a silver-based inorganic additive as an antiviral agent was added in an amount of 10 mass% relative to 100 mass% of the surface protective layer. The coating thickness of the surface protective layer was set to 6 μm.

[0075] The average particle size of the antiviral agent was set to 5 μm. The particle size distribution of the antiviral agent was determined such that the cumulative 10% particle size in the particle size distribution of the antiviral agent was 2.5 μm, and the cumulative 90% particle size in the particle size distribution of the antiviral agent was 15 μm. In this manner, the decorative sheet of Example 1 was formed.

[0076] Example 2 A decorative sheet of Example 2 was formed in the same manner as in Example 1, except that no transparent resin layer was formed and that a solid ink layer was formed. The solid ink layer was formed on one side of the colored base layer by gravure printing using an ink containing polyurethane resin and nitrocellulose resin and containing titanium dioxide as a pigment. The picture pattern layer was formed on the side of the solid ink layer opposite to the side facing the colored base layer.

[0077] Example 3 A decorative sheet of Example 3 was formed in the same manner as in Example 1, except that a solid ink layer was formed between the colored base fabric layer and the picture design layer.

[0078] Example 4 A decorative sheet of Example 4 was formed in the same manner as in Example 1, except that no transparent resin layer was formed.

[0079] Example 5 A decorative sheet of Example 5 was formed in the same manner as in Example 1, except that the coating thickness of the surface protective layer was set to 3 [μm].

[0080] Example 6 A decorative sheet of Example 6 was formed in the same manner as in Example 1, except that the coating thickness of the surface protective layer was set to 9 [μm].

[0081] Comparative Example 1 A decorative sheet of Comparative Example 1 was formed in the same manner as in Example 1, except that the average particle size of the antiviral agent was 8 [μm], and the particle size distribution of the antiviral agent was such that the cumulative 10[%] particle size in the particle size distribution of the antiviral agent was 2 [μm], and the cumulative 90[%] particle size in the particle size distribution of the antiviral agent was 30 [μm].

[0082] Comparative Example 2 A decorative sheet of Comparative Example 2 was formed in the same manner as in Example 1, except that the average particle size of the antiviral agent was 0.5 [μm] and that the particle size distribution of the antiviral agent was such that the cumulative 10[%] particle size in the particle size distribution of the antiviral agent was 0.2 [μm] and the cumulative 90[%] particle size in the particle size distribution of the antiviral agent was 1.5 [μm].

[0083] Comparative Example 3 A decorative sheet of Comparative Example 3 was formed in the same manner as in Example 1, except that the average particle size of the antiviral agent was 15 [μm], and the particle size distribution of the antiviral agent was such that the cumulative 10[%] particle size in the particle size distribution of the antiviral agent was 6 [μm] and the cumulative 90[%] particle size in the particle size distribution of the antiviral agent was 45 [μm].

[0084] (Performance evaluation, evaluation results) The decorative sheets of Examples 1 to 6 and the decorative sheets of Comparative Examples 1 to 3 were each evaluated for antiviral properties and surface condition. The evaluation methods used were as described below.

[0085] <Antiviral> The decorative sheets of the examples and the decorative sheets of the comparative examples were subjected to antiviral tests in accordance with ISO 21702 to evaluate their antiviral properties (antiviral performance). Specifically, a test sample measuring 50 mm square was placed in a sterile petri dish, and 0.4 mL of a virus solution containing an enveloped virus (influenza virus) was inoculated onto the sample.

[0086] The sample was then covered with a 40 mm square piece of polyethylene film, and the dish was then covered with a lid. The sample was then inoculated with the virus under conditions of a temperature of 25°C and a humidity of 90% or higher. After a predetermined time (24 hours) had elapsed, 10 mL of SCDLP medium was poured into the dish to wash out the virus, and the virus infectivity of the liquid from which the virus was washed out was measured using the plaque method.

[0087] <Measurement of viral infectivity (plaque method)> Host cells were cultured in a monolayer on a 6-well plate, and 0.1 mL of serially diluted washout solution was inoculated into each well. The cells were then cultured for 1 hour under conditions of 5% CO2 at 37°C to allow the virus to adsorb onto the cells, after which agar medium was poured into the 6-well plate and cultured for 2-3 days. The cells were then fixed and stained, and the number of plaques formed was counted.

[0088] Calculation of viral infectivity Using the following formula, sample 1 [cm 2 The virus infectivity per 100 μg / ml was calculated.

[0089] V = (10 × C × D × N) / A

[0090] V: 1 cm sample 2 Viral infectivity per unit (PFU / cm 2 ) C: Number of plaques counted D: Dilution ratio of the well in which the plaques were counted N: SCDLP amount A: Contact area between the sample and the virus (area of ​​the polyethylene film)

[0091] <Calculation of antiviral activity value> The antiviral activity value was calculated using the following formula: where the antiviral activity value is 2log 10 In the above cases, it was determined that the antiviral effect was present.

[0092] Antiviral activity value = log(Vb) - log(Vc)

[0093] Log(Vb): Unprocessed sample 1 [cm 2 ] Common logarithm of viral infectivity per Log(Vc): Antiviral treated sample 1 [cm after 24 hours 2 ] Common logarithm of viral infectivity per

[0094] The calculated antiviral activity value was evaluated on a two-level scale of "good" or "bad."

[0095] <Evaluation criteria> ○: Antiviral activity value is 2 log 10 If it is more than ×: Antiviral activity value is 2log 10 If less than

[0096] <Surface condition> For a 1.0 cm square decorative material equipped with the decorative sheet of the embodiment and a 1.0 cm square decorative material equipped with the decorative sheet of the comparison example, a Gakushin type abrasion tester was used to apply a load of 200 g to the friction element in contact with the surface protective layer, and the friction element was slid back and forth 50 times, after which the surface condition (condition of the surface protective layer) was visually inspected to evaluate the surface condition.

[0097] <Evaluation criteria> ○: No change in pattern occurred. ×: Changes in the pattern have occurred. The "change in pattern" refers to a change in the pattern formed on the picture design layer, which occurs due to damage to the surface protective layer. [Table 1]

[0098] As a result of evaluating various performances using the above-mentioned methods, the decorative sheets of Examples 1 to 6 were: The decorative sheets of Comparative Examples 1 to 3 showed excellent performance in terms of both antiviral property and surface condition. On the other hand, the decorative sheets of Comparative Examples 1 to 3 were unable to show excellent performance in terms of both antiviral property and surface condition.

[0099] The present technology can be configured as follows. (1) A colored base layer; a pattern layer laminated on one surface of the colored base fabric layer and having a pattern formed thereon; a surface protection layer formed on one surface of the picture pattern layer using a thermosetting resin containing an antiviral agent, and at least one of an ultraviolet-curable resin and an electron beam-curable resin; the amount of the antiviral agent added relative to 100% by mass of the surface protective layer is within a range of 0.2% by mass or more and 15% by mass or less, The average particle size of the antiviral agent is within the range of 1 μm or more and 10 μm or less, when the average particle size of the antiviral agent is φ (μm), a cumulative 10% particle size in the particle size distribution of the antiviral agent is 0.4φ or more, and a cumulative 90% particle size in the particle size distribution of the antiviral agent is 3.5φ or more, A decorative sheet in which the relationship 0.5D≦φ≦2D holds, where φ (μm) is the average particle size of the antiviral agent and D (μm) is the thickness of the surface protective layer. (2) The decorative sheet according to (1) above, wherein 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. (3) The decorative sheet according to (1) or (2) above, wherein the surface protective layer contains at least one of a silicon-based component and a fluorine-based component. (4) The decorative sheet according to any one of (1) to (3) above, wherein the surface of the surface protective layer opposite to the surface facing the picture design layer is embossed. (5) The decorative sheet according to any one of (1) to (4) above, further comprising a transparent resin layer disposed between the picture design layer and the surface protective layer. (6) The surface protective layer is formed by stacking a plurality of layers, The decorative sheet according to any one of (1) to (5), wherein the layer located farthest from the picture pattern layer among the plurality of layers forming the surface protective layer is formed using a thermosetting resin to which an antiviral agent has been added, and at least one of an ultraviolet curable resin and an electron beam curable resin. (7) A decorative sheet as described in (6) above, in which the layer among the plurality of layers forming the surface protective layer that is located farthest from the picture pattern layer is doped with at least one of a silicon-based component and a fluorine-based component. (8) A decorative sheet as described in (6) or (7) above, in which the layer among the plurality of layers forming the surface protective layer that is located farthest from the picture pattern layer is embossed on the surface opposite to the surface facing the picture pattern layer. (9) A substrate; A decorative material comprising: a decorative sheet according to any one of (1) to (8) above, laminated on at least one surface of the substrate. [Explanation of symbols]

[0100] 1...decorative sheet, 2...colored base fabric layer, 3...picture pattern layer, 4...adhesive resin layer, 5...transparent resin layer, 6...surface protective layer, 6a...first surface protective layer, 6b...second surface protective layer, 7...embossment, 8...primer layer, 9...substrate, 10...decorative material

Claims

1. A colored base layer; a pattern layer laminated on one surface of the colored base fabric layer and having a pattern formed thereon; a surface protection layer formed on one surface of the picture pattern layer using a thermosetting resin containing an antiviral agent, and at least one of an ultraviolet-curable resin and an electron beam-curable resin; an amount of the antiviral agent added relative to 100% by mass of the surface protective layer is within a range of 0.2% by mass or more and 15% by mass or less; The average particle size of the antiviral agent is within the range of 1 μm or more and 10 μm or less, when the average particle size of the antiviral agent is φ (μm), a cumulative 10% particle size in the particle size distribution of the antiviral agent is 0.4φ or more, and a cumulative 90% particle size in the particle size distribution of the antiviral agent is 3.5φ or more, A decorative sheet, wherein when the average particle size of the antiviral agent is φ (μm) and the thickness of the surface protective layer is D (μm), the relationship 0.5D≦φ≦2D is satisfied.

2. The decorative sheet according to claim 1, wherein 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 system, and pyridine-2-thiol-oxide.

3. 2. The decorative sheet according to claim 1, wherein said surface protective layer contains at least one of a silicon-based component and a fluorine-based component.

4. 2. The decorative sheet according to claim 1, wherein the surface of said surface protective layer opposite to the surface facing said picture design layer is embossed.

5. 2. The decorative sheet according to claim 1, further comprising a transparent resin layer disposed between said picture design layer and said surface protective layer.

6. The surface protective layer is formed by stacking a plurality of layers, 2. The decorative sheet according to claim 1, wherein the layer located farthest from the picture pattern layer among the plurality of layers forming the surface protective layer is formed using a thermosetting resin to which an antiviral agent has been added, and at least one of an ultraviolet-curable resin and an electron beam-curable resin.

7. A decorative sheet as described in claim 6, wherein the layer located farthest from the picture pattern layer among the plurality of layers forming the surface protective layer contains at least one of a silicon-based component and a fluorine-based component.

8. A decorative sheet as described in claim 6, wherein an embossing process is performed on the surface of the layer of the plurality of layers forming the surface protective layer that is located farthest from the picture pattern layer, opposite the surface facing the picture pattern layer.

9. A substrate; A decorative material comprising: a decorative sheet according to any one of claims 1 to 8 laminated on at least one surface of the substrate.

Images