Antiviral decorative sheet for anti-slip flooring, antiviral adhesive sheet for anti-slip flooring using the same, and antiviral decorative board for anti-slip flooring

Abstract

To provide an antiviral decorative sheet for an anti-slip floor which achieves both anti-slip property by adjustment (use of soft resin) of hardness of a surface protective layer, and antiviral property by containing antiviral particles in the surface protective layer.SOLUTION: A decorative sheet has a crosslinking curable resin layer on the outermost layer, wherein (1) the crosslinking curable resin layer has Martens hardness of 30 N / mm2 or more and 100 N / mm2 or less and skid resistance values (C.S.R. value) of 0.40 or more, (2) the crosslinking curable resin layer contains a cured product of a crosslinking curable resin and antiviral particles, in observation of a cross section in a thickness direction of the crosslinking curable resin layer, an area occupied by the antiviral particles in 100% of the area of the cross section is 1% or more and 10% or less, (3) the antiviral particles have an average particle diameter of primary particles of 1 μm or more and 7 μm or less, aggregated particles formed by aggregating the primary particles are contained in the crosslinking curable resin layer, in observation of the cross section, the area occupied by the aggregated particles in 100% of the area occupied by the antiviral particles is 40% or more, and (4) the crosslinking curable resin layer have average thickness of a smooth part of 10 μm or more when it does not have a projection due to the aggregated particles, and average thickness of the smooth part excluding the projection of 10 μm or more when it has the projection due to the aggregated particles.SELECTED DRAWING: None

Description

[Technical Field]

[0001] This invention relates to an antiviral decorative sheet for anti-slip flooring, an antiviral adhesive-processed sheet for anti-slip flooring using the same, and an antiviral decorative board for anti-slip flooring. [Background technology]

[0002] Conventionally, various decorative sheets have been used for surface finishing of fixtures, floors, walls, etc., used as interior materials in buildings. For example, decorative sheets composed of a laminate having, in order in the thickness direction, a base sheet, a transparent resin layer, and a surface protection layer are widely used. It is known that a decorative layer may be provided on the base sheet as needed, a primer layer may be provided between the transparent resin layer and the surface protection layer to improve adhesion, and an ionizing radiation-curable resin may be included in the resin component of the surface protection layer to improve its scratch resistance.

[0003] One example of adding functionality to decorative sheets is the use of anti-slip decorative sheets. For example, Patent Document 1 describes a "floor decorative sheet having a plurality of protrusions formed on its surface, The height of the aforementioned protrusion is 20 μm or more and 80 μm or less. In a plan view, the shape of the convex portion is polygonal, with the length of one side being between 40 μm and 200 μm. The aforementioned protrusions are arranged randomly, A decorative floor sheet is disclosed, characterized in that the proportion of the protrusions per unit area in a plan view is 0.05 or more and 0.5 or less. Patent Document 1 is an example of imparting anti-slip properties to a decorative sheet by forming specific protrusions on the surface, but there is also a known technique of imparting anti-slip properties by adjusting the hardness of the surface protective layer (using a soft resin).

[0004] Another example of imparting functionality to decorative sheets is the use of antiviral decorative sheets. For example, Patent Document 2 discloses "an antiviral interior decorative sheet comprising a silver-based inorganic additive or a zinc-based inorganic additive in the coating resin of the outermost surface of the decorative sheet, characterized in that the true specific gravity of the silver-based inorganic additive or the zinc-based inorganic additive is 2.5 or less, the average particle size is 1 μm or less, and the additive is incorporated in a solid content ratio of 10 to 30% of the coating resin of the outermost surface of the decorative sheet."

[0005] In the technology for providing slip resistance by adjusting the hardness of the surface protective layer of a decorative sheet (by using a soft resin), if the surface protective layer contains antiviral particles, there is a problem that the exposed area of ​​the soft resin that exhibits slip resistance (effective area of ​​the soft resin) decreases relatively because the antiviral particles with small particle sizes (especially average particle diameter of 5 μm or less) are uniformly present on the outermost surface of the surface protective layer, thus reducing the slip resistance.

[0006] To improve the above problems, it can be proposed, for example, to use large-sized antiviral particles and scatter them on the surface protective layer (to ensure an effective area of ​​the soft resin). However, when a surface protective layer-forming composition containing large-sized antiviral particles is coated using known printing methods such as gravure printing, there is a further problem that streaky defects are likely to occur during coating. Streaky defects caused by large-sized antiviral particles can also reduce the aesthetic appeal of the decorative sheet.

[0007] Therefore, there is a need to develop an antiviral decorative sheet for anti-slip flooring that achieves both slip resistance by adjusting the hardness of the surface protective layer (using a soft resin) and antiviral properties by including antiviral particles in the surface protective layer. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Unexamined Japanese Patent Publication No. 2017-025576 [Patent Document 2] Japanese Patent Publication No. 2015-80887 [Overview of the project] [Problems that the invention aims to solve]

[0009] The present invention aims to provide an antiviral decorative sheet for anti-slip flooring that achieves both anti-slip properties by adjusting the hardness of the surface protective layer (using a soft resin) and antiviral properties by containing antiviral particles in the surface protective layer. Furthermore, the invention aims to provide an antiviral adhesive-processed sheet and an antiviral decorative panel for anti-slip flooring using the aforementioned decorative sheet.

[0010] As a result of diligent research, the inventors of the present invention have discovered that the above objective can be achieved by a specific embodiment in which some or all of the antiviral particles are contained in the surface protective layer in the form of aggregated particles, and have completed the present invention.

[0011] In other words, the present invention relates to the following antiviral decorative sheet for anti-slip flooring, an antiviral adhesive-processed sheet for anti-slip flooring using the same, and an antiviral decorative board for anti-slip flooring. 1. A decorative sheet having a cross-linked curing resin layer on its outermost surface, (1) The cross-linked curable resin layer has a Martens hardness of 30 N / mm². 2 Above 100 N / mm 2 The following conditions must be met, and the sliding resistance value (CSR value) must be 0.40 or higher. (2) The cross-linked curable resin layer contains a cured product of the cross-linked curable resin and antiviral particles, and in observation of the cross-section of the cross-linked curable resin layer in the thickness direction, the area occupied by the antiviral particles out of 100% of the area of ​​the cross-section is 1% or more and 10% or less. (3) The crosslinked curable resin is an ionizing radiation curable resin, and is a resin mixture containing 50% by mass or more and 90% by mass or less of a urethane (meth)acrylate oligomer (A) having two radical polymerizable unsaturated groups per molecule and a weight-average molecular weight of 1000 to 3000, and 10% by mass or more and 50% by mass or less of aliphatic urethane (meth)acrylate oligomer (B) having three to fifteen radical polymerizable unsaturated groups per molecule. ( 4 The antiviral particles have an average particle diameter of 1 μm or more and 7 μm or less for the primary particles, and the cross-linked curable resin layer contains aggregated particles formed by the aggregation of the primary particles. The average particle diameter of the aggregated particles is 15 μm or more and 60 μm or less. In the observation of the cross-section, the area occupied by the aggregated particles is 40% or more out of the 100% area occupied by the antiviral particles, ( 5 ) The crosslinked and cured resin layer Having a protrusion caused by the aggregated particles, excluding the convex portions ku has an average thickness of the smooth portion of 10 μm or more, characterizing an antiviral decorative sheet for a non-slip floor. 2 . The shape of the aggregated particles is at least one of amorphous and filamentous, as described in the above item 1 of the antiviral decorative sheet for a non-slip floor. 3 . The area occupied by the antiviral particles in the 100% area of the cross-section is 2% or more and 8% or less, as described in item 1 above or 2 of the antiviral decorative sheet for a non-slip floor. 4 . The average particle diameter of the aggregated particles is 20 μm or more and 40 μm or less, as described in any one of items 1 to 3 of the antiviral decorative sheet for a non-slip floor. 5 . The Martens hardness of the crosslinked and cured resin layer is 60 N / mm 2 or more and 80 N / mm 2 or less, as described in any one of items 1 to 4 of the antiviral decorative sheet for a non-slip floor. 6 . The antiviral particles are organic-based antiviral particles, as described in any one of items 1 to 5 of the antiviral decorative sheet for a non-slip floor. 7 . The organic-based antiviral particles have a hydrophilic group, as described in the above item 6 of the antiviral decorative sheet for a non-slip floor. 8 . The The aforementioned average thickness of the smooth portion of the crosslinked and cured resin layer is 12 μm or more and 35 μm or less, as described in any one of items 1 to 7 of the antiviral decorative sheet for a non-slip floor. 9The above items 1- contain 0.5 parts by mass or more and 15 parts by mass or less of the antiviral particles per 100 parts by mass of the cross-linked curable resin. 8 Anti-slip flooring antiviral decorative sheet as described in any of the following. 10 The laminate comprises, in order in the thickness direction, a base sheet, a pattern layer, a transparent thermoplastic resin layer, and the crosslinked curable resin layer, as described in item 1 above. 9 Anti-slip flooring antiviral decorative sheet as described in any of the following. 11 In the thickness direction, in order, the adhesive sheet and the above items 1- 10 An anti-slip floor antiviral adhesive sheet comprising a laminate comprising at least one anti-slip floor antiviral decorative sheet as described in any of the above. 12 In the thickness direction, in order, the decorative panel base material and the above items 1- 10 Anti-slip flooring antiviral decorative sheet as described in any of the above items 11 An antiviral decorative panel for anti-slip floors, comprising a laminate comprising at least the antiviral adhesive sheet for anti-slip floors described in [reference]. [Effects of the Invention]

[0012] The antiviral decorative sheet for anti-slip floors of the present invention achieves both good anti-slip properties (slip resistance value (CSR value) of 0.40 or higher) and antiviral properties by combining a specific thickness (average thickness of the smooth portion) of the outermost cross-linked curable resin layer (surface protective layer), a specific Martens hardness, and a specific configuration in which some or all of the antiviral particles are contained in the form of aggregated particles. Furthermore, by combining this decorative sheet with an adhesive sheet, an antiviral adhesive-processed sheet for anti-slip floors can be made, and by combining this decorative sheet and the adhesive-processed sheet with a decorative panel substrate, an antiviral decorative panel for anti-slip floors can be made. [Brief explanation of the drawing]

[0013] [Figure 1]This is an example of a cross-sectional view of a cross-linked curable resin layer in the thickness direction, showing how antiviral particles with a primary particle diameter of several μm aggregate to form aggregated particles with an average particle diameter of approximately 38 μm. It can be seen that the areas where aggregated particles are present have protrusions caused by the aggregated particles compared to other areas (smooth areas). [Figure 2] This is an example of a cross-sectional view of a cross-linked curable resin layer in the thickness direction, showing the presence of primary antiviral particles and amorphous or clustered aggregated particles. It can be seen that the areas where clustered aggregated particles are present form protrusions due to the aggregated particles compared to other areas (smooth areas). [Figure 3] This is a schematic cross-sectional view showing an example of an antiviral decorative sheet for anti-slip flooring according to the present invention. [Figure 4] This is a schematic cross-sectional view showing an example of an antiviral adhesive sheet for anti-slip flooring according to the present invention. [Figure 5] This is a schematic cross-sectional view showing an example of a component of the antiviral decorative panel for anti-slip flooring according to the present invention. [Figure 6] This figure shows a diamond indenter (a), a schematic diagram of the indentation operation (b), and an example of indentation load and displacement (c) used for measuring Martens hardness in this specification. [Modes for carrying out the invention]

[0014] 1. Antiviral decorative sheet for non-slip flooring The anti-slip flooring antiviral decorative sheet of the present invention (hereinafter also referred to as "the decorative sheet of the present invention") is a decorative sheet having a cross-linked curing resin layer on its outermost layer, (1) The cross-linked curable resin layer has a Martens hardness of 30 N / mm². 2 Above 100 N / mm 2 The following conditions must be met, and the sliding resistance value (CSR value) must be 0.40 or higher. (2) The cross-linked curable resin layer contains a cured product of the cross-linked curable resin and antiviral particles, and in observation of the cross-section of the cross-linked curable resin layer in the thickness direction, the area occupied by the antiviral particles out of 100% of the area of ​​the cross-section is 1% or more and 10% or less. (3) The antiviral particles have an average particle diameter of 1 μm or more and 7 μm or less for the primary particles, and the cross-linked curable resin layer contains aggregated particles formed by the aggregation of the primary particles, and in the cross-sectional observation, the area occupied by the aggregated particles is 40% or more of the 100% area occupied by the antiviral particles, (4) The cross-linked curable resin layer has an average thickness of 10 μm or more for the smooth portion if it does not have protrusions caused by the aggregated particles, and if it does have protrusions caused by the aggregated particles, the average thickness of the smooth portion excluding the protrusions is 10 μm or more. It is characterized by the following:

[0015] The decorative sheet of the present invention achieves both good slip resistance (slip resistance value (CSR value) of 0.40 or higher) and antiviral properties through a combination of a specific thickness (average thickness of the smooth portion) of the outermost cross-linked curable resin layer (surface protective layer), a specific Martens hardness, and a specific configuration in which some or all of the antiviral particles are contained in the form of aggregated particles. Furthermore, the decorative sheet of the present invention can be combined with an adhesive sheet to create an antiviral adhesive-processed sheet for slip-resistant floors, and the decorative sheet and the adhesive-processed sheet of the present invention can each be combined with a decorative panel substrate to create an antiviral decorative panel for slip-resistant floors.

[0016] The decorative sheet of the present invention comprises a cross-linked curable resin layer on its outermost layer, and the specific configuration (layer configuration) is not limited as long as the cross-linked curable resin layer and the antiviral particles contained therein satisfy the predetermined requirements shown in (1) to (4) above.

[0017] In specific embodiments, the decorative sheet of the present invention may be composed of a laminate comprising, in order in the thickness direction, for example, a base sheet, a transparent thermoplastic resin layer, and a crosslinked curable resin layer. Alternatively, the decorative sheet of the present invention may be composed of a laminate comprising, in order in the thickness direction, for example, a base sheet, a pattern layer, a transparent thermoplastic resin layer, and a crosslinked curable resin layer. In the decorative sheet of the present invention, the outermost crosslinked curable resin layer serves as a so-called surface protection layer.

[0018] Figure 3 is a schematic cross-sectional view showing an example of a decorative sheet of the present invention. In Figure 3, a pattern layer 3, a transparent adhesive layer 4, a transparent thermoplastic resin layer 5, a primer layer 6, and a crosslinked curable resin layer 7 are sequentially laminated on a base sheet 2, and a backside primer layer 8 is further provided on the back surface of the base sheet 2. An embossed uneven pattern is also formed. Furthermore, the crosslinked curable resin layer 7 schematically shows a configuration in which antiviral particles 9 exist, including primary particles (9-1 in the figure) and aggregated particles (9-2 in the figure). The thickness of the crosslinked curable resin layer 7 (thickness of the smooth portion excluding the protrusions caused by aggregated particles) is the thickness shown by A in the figure, but depending on the size of the aggregated particles, protrusions may be formed in the crosslinked curable resin layer by aggregated particles that are larger than the thickness A of the smooth portion, as shown by 9-2 in the figure. Note that these protrusions are raised areas caused by aggregated particles, but the aggregated particles themselves are not exposed; rather, they are protrusions (raised areas) of the crosslinked curable resin layer.

[0019] Furthermore, the present invention also includes the invention of an antiviral adhesive-processed sheet for anti-slip flooring (hereinafter also referred to as "the adhesive-processed sheet of the present invention") which is composed of a laminate comprising, in order in the thickness direction, an adhesive sheet and the decorative sheet of the present invention (for example, the embodiment shown in Figure 4). In Figure 4, an example is shown of an adhesive-processed sheet 11 having an adhesive sheet 10 on the back surface of the decorative sheet 1 shown in Figure 3, but the configuration of the decorative sheet 1 is not limited to this.

[0020] Furthermore, the present invention also includes an invention of an antiviral decorative panel for anti-slip flooring (hereinafter also referred to as "the decorative panel of the present invention") (for example, the embodiment shown in Figure 5), which is composed of a laminate comprising, in order in the thickness direction, a decorative panel base material and a decorative sheet of the present invention or an adhesive-processed sheet of the present invention. In Figure 5, an example is shown of a decorative panel 13 in which the decorative panel base material 12 is provided on the back surface of the decorative sheet 1 shown in Figure 3. Alternatively, the decorative panel 13 may be in which the decorative panel base material 12 is provided on the back surface of the adhesive-processed sheet 11 shown in Figure 4.

[0021] In this specification, the side of the decorative sheet of the present invention that is visible after application, that is, the direction in which the cross-linked curable resin layer (surface protection layer) is laminated when viewed from the base sheet, is referred to as the "top" or "front side," and the direction in which the back surface primer layer is laminated when viewed from the base sheet is referred to as the "bottom" or "back side." This relationship is the same for the adhesive processed sheet and the decorative panel of the present invention. When referring to the "side of the cross-linked curable resin layer (surface protection layer)" in a laminate, it is also abbreviated as the "side of the cross-linked curable resin layer (surface protection layer)."

[0022] The layers of the decorative sheet of the present invention will be described below using Figure 3 as an example. However, the layer configuration of the decorative sheet of the present invention is not limited to the configuration shown in Figure 3, and various layer configurations can be adopted as a laminate, as described above. In the following description, the lower and upper limits of the numerical range represented by "~" mean "greater than or equal to or less than or equal to" (for example, α~β means α or greater and β or less).

[0023] Base sheet The base sheet has layers of patterns and designs sequentially laminated onto its surface (front side). The outermost layer is a cross-linked curing resin layer (surface protective layer).

[0024] Various materials can be used as the base sheet, such as resin films, paper, and resin-impregnated paper, but among resin films, those containing thermoplastic resin as the resin component are preferred. Specifically, examples include polyvinyl chloride, polyethylene terephthalate, polybutylene terephthalate, polyamide, polyethylene, polypropylene, polycarbonate, polyethylene naphthalate, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-acrylic acid ester copolymer, ionomer, acrylic acid ester, methacrylic acid ester, etc. In the present invention, at least one of polyvinyl chloride and polyolefin (polyethylene, polypropylene, etc.) can be suitably used.

[0025] The base sheet may be colored. For example, it can be colored by adding a coloring agent (pigment or dye) to a thermoplastic resin. As coloring agents, inorganic pigments such as titanium dioxide, carbon black, and iron oxide, organic pigments such as phthalocyanine blue, and various dyes can be used. One or more of these can be selected. The amount of coloring agent added can also be set appropriately according to the desired color.

[0026] The base sheet may contain various additives as needed, such as fillers, matting agents, foaming agents, flame retardants, lubricants, antistatic agents, antioxidants, UV absorbers, and light stabilizers.

[0027] The thickness of the base sheet can be set appropriately depending on the application and method of use of the final product, but generally 50 to 250 μm is preferred.

[0028] The base sheet may, if necessary, be subjected to corona discharge treatment on its surface (front side) to improve the adhesion of the ink forming the pattern layer. The method and conditions for corona discharge treatment should be carried out according to known methods. In addition, if necessary, the back side of the base sheet may be subjected to corona discharge treatment, a pattern layer (so-called back print) may be formed, or a back primer layer, backer layer, etc., described later may be formed.

[0029] Pattern layer The pattern layer is an optional layer that imparts a desired pattern (design) to the decorative sheet of the present invention, and the types of patterns are not limited. Examples include wood grain patterns, leather patterns, stone patterns, sand patterns, tile patterns, brick patterns, fabric patterns, geometric figures, letters, symbols, abstract patterns, floral patterns, landscapes, characters, etc.

[0030] The method for forming the pattern layer is not particularly limited. For example, it may be formed on the surface of the substrate sheet by a known printing method using an ink obtained by dissolving (or dispersing) a known coloring agent (dye or pigment) together with a binder resin in a solvent (or dispersion medium). From the viewpoint of reducing the VOCs of the decorative sheet, an aqueous composition may also be used as the ink.

[0031] Examples of colorants include inorganic pigments such as carbon black, titanium white, zinc oxide, iron oxide, Prussian blue, and cadmium red; organic pigments such as azo pigments, lake pigments, anthraquinone pigments, quinacridone pigments, phthalocyanine pigments, isoindolinone pigments, and dioxazine pigments; metallic powder pigments such as aluminum powder and bronze powder; pearlescent pigments such as titanium dioxide-coated mica and bismuth oxide; fluorescent pigments; and luminescent pigments. These colorants can be used individually or in combination of two or more. These colorants may also be used with fillers such as silica, extender pigments such as organic beads, neutralizing agents, surfactants, etc.

[0032] As binder resins, in addition to hydrophilic treated polyester-based urethane resins, polyester, polyacrylate, polyvinyl acetate, polybutadiene, polyvinyl chloride, chlorinated polypropylene, polyethylene, polystyrene, polystyrene-acrylate copolymer, rosin derivatives, alcohol adducts of styrene-maleic anhydride copolymer, and cellulose resins can also be used. More specifically, for example, polyacrylamide resins, poly(meth)acrylic acid resins, polyethylene oxide resins, poly-N-vinylpyrrolidone resins, water-soluble polyester resins, water-soluble polyamide resins, water-soluble amino resins, water-soluble phenolic resins, and other water-soluble synthetic resins; water-soluble natural polymers such as polynucleotides, polypeptides, and polysaccharides can also be used. Furthermore, for example, modified natural rubber, synthetic rubber, polyvinyl acetate resins, (meth)acrylic resins, polyvinyl chloride resins, polyurethane-polyacrylic resins, etc., or mixtures of the above natural rubber, etc., and other resins can also be used. The above binder resins can be used alone or in combination of two or more types.

[0033] Examples of solvents (or dispersion media) include petroleum-based organic solvents such as hexane, heptane, octane, toluene, xylene, ethylbenzene, cyclohexane, and methylcyclohexane; ester-based organic solvents such as ethyl acetate, butyl acetate, 2-methoxyethyl acetate, and 2-ethoxyethyl acetate; alcohol-based organic solvents such as methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, isobutyl alcohol, ethylene glycol, and propylene glycol; ketone-based organic solvents such as acetone, methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone; ether-based organic solvents such as diethyl ether, dioxane, and tetrahydrofuran; chlorine-based organic solvents such as dichloromethane, carbon tetrachloride, trichloroethylene, and tetrachloroethylene; and inorganic solvents such as water. These solvents (or dispersion media) can be used individually or in combination of two or more.

[0034] Printing methods used to form the pattern layer include, for example, gravure printing, offset printing, screen printing, flexographic printing, electrostatic printing, and inkjet printing. Furthermore, when forming a solid-color pattern layer covering the entire surface, various coating methods such as roll coating, knife coating, air knife coating, die coating, lip coating, comma coating, kiss coating, flow coating, and dip coating can be used. Other methods such as hand-painting, suminagashi (marbling), photography, transfer, laser beam lithography, electron beam lithography, partial metal deposition, and etching may also be used, or combined with other formation methods.

[0035] The thickness of the pattern layer is not particularly limited and can be set appropriately according to the product characteristics, but the layer thickness is approximately 0.1 to 15 μm.

[0036] transparent resin layer The transparent resin layer is a layer that can be provided as desired and is not particularly limited as long as it is transparent; it may be colorless transparent, colored transparent, semi-transparent, etc. The material of the transparent resin layer is not limited, but one formed from a thermoplastic resin is preferred. Specifically, examples include polyvinyl chloride, polyethylene terephthalate, polybutylene terephthalate, polyamide, polyethylene, polypropylene, polycarbonate, polyethylene naphthalate, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-acrylic acid ester copolymer, ionomer, acrylic acid ester, methacrylic acid ester, etc. In the present invention, at least one of polyvinyl chloride and polyolefin (polyethylene, polypropylene, etc.) can be suitably used. In this specification, when the transparent resin layer contains a thermoplastic resin, the transparent resin layer is specifically referred to as the "transparent thermoplastic resin layer".

[0037] Furthermore, the transparent resin layer may be colored, as long as it remains transparent.

[0038] Furthermore, the transparent resin layer may contain various additives as needed, such as flame retardants, lubricants, antistatic agents, antioxidants, ultraviolet absorbers, and light stabilizers, as long as it is transparent.

[0039] The thickness of the transparent resin layer is not limited, but is preferably between 40 μm and 300 μm, more preferably between 60 μm and 200 μm, and most preferably between 60 μm and 100 μm. By setting the thickness of the transparent resin layer within the above range, it is possible to form deep embossing, and it is also easier to suppress the occurrence of scratches and abrasion (removal of the pattern) due to wear of the pattern layer.

[0040] transparent adhesive layer A transparent adhesive layer may be formed to improve the adhesion between the pattern layer and the transparent resin layer or the cross-linked curing resin layer (surface protective layer) described later. The transparent adhesive layer is not particularly limited as long as it is transparent, and may be colorless, colored, translucent, etc.

[0041] The adhesive is not particularly limited, and adhesives known in the field of decorative sheets can be used. Examples of adhesives known in the field of decorative sheets include thermoplastic resins such as polyamide resins, acrylic resins, and vinyl acetate resins, and thermosetting resins such as urethane resins. These adhesives can be used individually or in combination of two or more. Two-component curing polyurethane resins or polyester resins using isocyanate as a curing agent can also be used.

[0042] The thickness of the transparent adhesive layer is not particularly limited, but is approximately 0.1 to 30 μm, preferably 1 to 20 μm.

[0043] Primer layer A primer layer for the cross-linked curing resin layer (surface protective layer) may be provided on top of the transparent resin layer. This primer layer enhances the adhesion between the transparent resin layer and the cross-linked curing resin layer described later, and in combination with the cross-linked curing resin layer, it can improve the bendability and scratch resistance of the decorative sheet. The primer layer is not particularly limited as long as it is transparent, and may be colorless transparent, colored transparent, translucent, etc.

[0044] A primer layer can be formed by applying a known primer to the surface of a transparent resin layer. Examples of primers include urethane resin primers made of acrylic-modified urethane resin (acrylic urethane copolymer resin), polycarbonate-based acrylic urethane copolymer resin, etc., primers made of urethane-cellulose resin (for example, a resin obtained by adding hexamethylene diisocyanate to a mixture of urethane and nitrate), and resin-based primers made of acrylic and urethane block copolymer. Among these, urethane resin primers containing polycarbonate-based acrylic urethane copolymer resin are preferably used from the viewpoint of scratch resistance and weather resistance.

[0045] The primer may contain additives as needed. Examples of additives include weathering agents such as UV absorbers and light stabilizers; fillers such as silica, calcium carbonate, and clay; flame retardants such as magnesium hydroxide; antioxidants; lubricants; and foaming agents. The amount of additives can be appropriately set according to the product characteristics.

[0046] Among the additives mentioned above, examples of UV absorbers include benzophenone-based UV absorbers, benzotriazole-based UV absorbers, and triazine-based UV absorbers. As for light stabilizers, hindered amine-based light stabilizers (HALS) are preferred. The content of these weathering agents is not limited, but it is sufficient to have approximately 1,000 to 100,000 ppm by mass for each of the UV absorbers and light stabilizers. In particular, in the present invention, it is preferable to use triazine-based UV absorbers and / or hindered amine-based light stabilizers.

[0047] While the thickness of the primer layer is not limited, it is preferably between 0.5 μm and 12 μm, and more preferably between 1 μm and 8 μm. Setting the thickness within this range makes it easier to improve the bendability and scratch resistance of the decorative sheet when combined with the cross-linked curing resin layer. It also makes it easier to incorporate additives such as weather-resistant agents, thus imparting weather resistance to the decorative sheet.

[0048] Cross-linked curing resin layer (surface protection layer) The decorative sheet of the present invention comprises a cross-linked curable resin layer (surface protective layer) on its outermost layer, and by satisfying the predetermined requirements shown in (1) to (4) below, it is possible to achieve both good slip resistance and antiviral properties. (1) The cross-linked curable resin layer has a Martens hardness of 30 N / mm². 2 Above 100 N / mm 2 The following conditions must be met, and the sliding resistance value (CSR value) must be 0.40 or higher. (2) The cross-linked curable resin layer contains a cured product of the cross-linked curable resin and antiviral particles, and in observation of the cross-section of the cross-linked curable resin layer in the thickness direction, the area occupied by the antiviral particles out of 100% of the area of ​​the cross-section is 1% or more and 10% or less. (3) The antiviral particles have an average particle diameter of 1 μm or more and 7 μm or less for the primary particles, and the cross-linked curable resin layer contains aggregated particles formed by the aggregation of the primary particles, and in the cross-sectional observation, the area occupied by the aggregated particles is 40% or more of the 100% area occupied by the antiviral particles, (4) If the cross-linked curable resin layer does not have protrusions caused by the aggregated particles, the average thickness of the smooth portion is 10 μm or more, and if it has protrusions caused by the aggregated particles, the average thickness of the smooth portion excluding the protrusions is 10 μm or more.

[0049] The cross-linked curing resin is not particularly limited as long as it is transparent; it may be colorless, colored, translucent, or any other type.

[0050] As the resin component of the crosslinking and curing type resin, the Martens hardness of the crosslinking and curing type resin layer can be adjusted to 30 N / mm 2 or more and 100 N / mm 2 or less, and thereby, as an excellent anti-slip property index, the slip resistance value (C.S.R. value) can be made 0.40 or more, although not particularly limited as long as possible. It is preferable to contain an ionizing radiation curable resin or a two-component curable urethane resin. Substantially, those formed from these resins are preferable. When the outermost layer is formed of an ionizing radiation curable resin or a two-component curable urethane resin, it is easy to enhance the abrasion resistance, impact resistance, stain resistance, scratch resistance, weather resistance, etc. of the decorative sheet. Among these, an ionizing radiation curable resin is preferable.

[0051] The ionizing radiation curable resin is not particularly limited, and a transparent resin mainly composed of a prepolymer (including an oligomer) and / or a monomer containing a radically polymerizable double bond capable of undergoing a polymerization crosslinking reaction by irradiation with ionizing radiation such as ultraviolet rays or electron beams can be used. These prepolymers or monomers can be used alone or in combination of a plurality. The curing reaction is usually a crosslinking and curing reaction.

[0052] Specifically, examples of the prepolymer or monomer include compounds having a radically polymerizable unsaturated group such as a (meth)acryloyl group or a (meth)acryloyloxy group, and a cationically polymerizable functional group such as an epoxy group in the molecule. Also, a polyene / thiol-based prepolymer by a combination of a polyene and a polythiol is also preferable. Here, the (meth)acryloyl group means an acryloyl group or a methacryloyl group.

[0053] Examples of prepolymers having radically polymerizable unsaturated groups include polyester (meth)acrylate, urethane (meth)acrylate, epoxy (meth)acrylate, melamine (meth)acrylate, triazine (meth)acrylate, and silicone (meth)acrylate. The weight-average molecular weight of these is typically preferably around 250 to 100,000. Here, the weight-average molecular weight as used herein is the average molecular weight measured by GPC analysis (gel permeation chromatography) and converted to standard polystyrene.

[0054] Examples of monomers having radically polymerizable unsaturated groups include monofunctional monomers such as methyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, and phenoxyethyl (meth)acrylate. Examples of polyfunctional monomers include diethylene glycol di(meth)acrylate, propylene glycol di(meth)acrylate, trimethylolpropane tri(meth)acrylate, trimethylolpropane ethylene oxide tri(meth)acrylate, dipentaerythritol tetra(meth)acrylate, dipentaerythritol penta(meth)acrylate, and dipentaerythritol hexa(meth)acrylate.

[0055] Examples of prepolymers having cationic polymerizable functional groups include epoxy resins such as bisphenol-type epoxy resins and novolac-type epoxy compounds, and vinyl ether resins such as fatty acid-based vinyl ethers and aromatic vinyl ethers. Examples of thiols include polythiols such as trimethylolpropane trithioglycolate and pentaerythritol tetrathioglycolate. Examples of polyenes include polyurethanes with allyl alcohol added to both ends, such as diols and diisocyanates.

[0056] In the present invention, a mixed resin can be used as the ionizing radiation-curable resin, which contains a urethane (meth)acrylate oligomer (A) with a weight-average molecular weight of 1000 to 3000 and having two radically polymerizable unsaturated groups per molecule, and an aliphatic urethane (meth)acrylate oligomer (B) with three to fifteen radically polymerizable unsaturated groups per molecule. When using such a mixed resin, it is easy to obtain effects such as scratch resistance and stain resistance due to the high crosslinking density, and by appropriately adjusting the weight-average molecular weight and / or the amount blended, it is possible to adjust the surface performance according to the application, such as making the crosslinked curable resin layer highly impact resistant or highly processable for V-cuts.

[0057] The content ratio of oligomer (A) and oligomer (B) in the ionizing radiation-curable resin is not limited, but when the total amount of oligomer (A) and oligomer (B) is taken as 100% by mass, it is preferable that oligomer (A) is in the range of 50-90% by mass and oligomer (B) is in the range of 10-50% by mass, and more preferably that oligomer (A) is in the range of 60-80% by mass and oligomer (B) is in the range of 20-40% by mass. This results in a Martens hardness of 30 N / mm² for the crosslinked curable resin layer (after curing). 2 Above 100 N / mm 2 The following settings are possible, preferably with a Martens hardness of 60 N / mm². 2 More than 80N / mm 2 The following settings are possible. In this invention, by combining a specific Martens hardness of the cross-linked curable resin layer, a specific thickness of the cross-linked curable resin layer (average thickness of the smooth portion) described later, and a specific configuration in which some or all of the antiviral particles are contained in the form of aggregated particles, it is possible to achieve both good slip resistance (slip resistance value (CSR value) of 0.40 or higher) and antiviral properties.

[0058] In this invention, a mixed resin containing two types of aliphatic urethane (meth)acrylates, resin A and resin B, described below, can also be used as the ionizing radiation-curable resin. Here, (meth)acrylate means acrylate or methacrylate.

[0059] Resin A is an aliphatic urethane (meth)acrylate having an isocyanurate skeleton, and is not limited as long as this requirement is met, but for example, an aliphatic urethane (meth)acrylate having an isocyanurate skeleton formed by a trimer of diisocyanate is preferred. Specifically, examples include a trimer of hexamethylene diisocyanate (especially 1,6-hexamethylene diisocyanate), a trimer of tolylene diisocyanate, a trimer of metaxylene diisocyanate, etc. Note that tolylene diisocyanate and metaxylene diisocyanate may have inferior weather resistance than hexamethylene diisocyanate due to having a benzene ring, so it is preferable that these diisocyanates are hydrogenated. These resins A have the effect of improving the stain resistance, alkali resistance, etc. of the crosslinked curable resin layer.

[0060] Resin B is an aliphatic urethane (meth)acrylate having an alicyclic skeleton rather than an isocyanurate skeleton. While not limited as long as this requirement is met, it is preferable that the alicyclic skeleton contains at least one of isophorone and cyclohexane. Specifically, examples include urethane oligomers with acrylate attached to the ends, which are polymers using isophorone diisocyanate and butanediol as monomers, and PG-modified diacrylates of hydrogenated dicyclohexylmethane diisocyanate (hydrogenated MDI). These resins B have the effect of imparting flexibility to the crosslinked curing resin layer, and when combined with resin A, they provide the crosslinked curing resin layer with excellent long-term stain resistance, alkali resistance, etc., as well as the effect of suppressing cracking and fissures when impact is applied or during processing.

[0061] Ionizing radiation-curable resins are transparent resins mainly composed of prepolymers (including oligomers) and / or monomers containing radically polymerizable double bonds in their molecules that can undergo polymerization and crosslinking reactions upon irradiation with ionizing radiation such as ultraviolet light or electron beams. The curing reaction is usually a crosslinking curing reaction. The ionizing radiation used to cure the ionizing radiation-curable resin is electromagnetic waves or charged particles having energy sufficient to cause a curing reaction of the molecules in the ionizing radiation-curable resin (composition). Usually, ultraviolet light or electron beams are used, but visible light, X-rays, ion beams, etc., may also be used. In this invention, among ionizing radiation-curable resins, electron beam-curable resins are preferred because they do not contain photopolymerization initiators, allowing the properties of the raw material resin to be directly reflected in the properties of the resin components of the crosslinking cured resin layer, and also because they offer a wider range of choices when using weather-resistant agents in combination.

[0062] While there are no particular limitations on the two-component curing urethane resin, those containing a polyol component having an OH group as the main component (such as acrylic polyol, polyester polyol, polyether polyol, or epoxy polyol) and an isocyanate component as the curing agent (such as tolylene diisocyanate, hexamethylene diisocyanate, or metaxylene diisocyanate) can be used.

[0063] The cross-linked curing resins exemplified above can be used individually or in combination of two or more types.

[0064] The crosslinked curable resin layer contains antiviral particles in addition to the cured product of the crosslinked curable resin. While the antiviral particles are not limited, in this invention it is preferable to use organic antiviral particles, and in particular it is preferable to use organic antiviral particles having hydrophilic groups in order to form aggregated antiviral particles.

[0065] The organic antiviral particles preferably contain at least one antiviral particle A selected from the group consisting of, for example, 1) particles containing a styrene polymer derivative compound and an unsaturated carboxylic acid derivative compound, 2) mixed particles containing a styrene polymer derivative compound and particles containing an unsaturated carboxylic acid derivative compound, and 3) particles containing styrene resin. Here, 3) particles containing styrene resin are particles that do not contain the unsaturated carboxylic acid derivative compound. That is, the antiviral particle A in the present invention may be 1) particles containing a styrene polymer derivative compound and an unsaturated carboxylic acid derivative compound together, 2) mixed particles containing a styrene polymer derivative compound and particles containing an unsaturated carboxylic acid derivative compound separately, or 3) particles containing styrene resin, or any combination of these 1) to 3).

[0066] The antiviral particle A described in 1) and / or 2) contains a styrene polymer derivative compound and an unsaturated carboxylic acid derivative compound, and its constituent components preferably have at least one structure selected from the group consisting of hydrogen, hydroxyl group, carboxyl group, sulfonic acid group, salt of a carboxyl group, salt of a sulfonic acid group, derivative of a carboxyl group, and derivative of a sulfonic acid group. Antiviral particle A having any of these structures is an antiviral particle having a hydrophilic group. Specifically, it is preferable to have at least one structure selected from the group consisting of styrene, sodium sulfonate, acrylic acid, maleic acid, and fumaric acid, and it is particularly preferable to have both at least one structure of styrene and sodium sulfonate, and at least one structure selected from the group consisting of acrylic acid, maleic acid, and fumaric acid.

[0067] In the present invention, the ratio of styrene polymer derivative compounds to unsaturated carboxylic acid derivative compounds in the total particles of the antiviral particle A described in 1) and / or 2) above is not limited, but if it is sufficient to have antiviral performance only against enveloped viruses, it is sufficient to contain only styrene polymer derivative compounds. In connection with this, if it is sufficient to have antiviral performance only against enveloped viruses, the antiviral particle A in the present invention may be an embodiment in which particles containing at least 3) styrene resin are used.

[0068] However, considering that the antiviral particle A of 1) and / or 2) above also has antiviral performance against non-enveloped viruses that are difficult to inhibit, it is preferable to include an unsaturated carboxylic acid derivative compound in addition to the styrene polymer derivative compound. In the present invention, the mass ratio of the styrene polymer derivative compound to the unsaturated carboxylic acid derivative compound can be set to, for example, 30:70 to 70:30, or even 40:60 to 60:40. In other words, in order for the antiviral particle A of the present invention to have antiviral performance against both enveloped viruses and non-enveloped viruses, it is preferable to use the antiviral particle A of 1) and / or 2) above which contains both the styrene polymer derivative compound and the unsaturated carboxylic acid derivative compound.

[0069] Specifically, in the case of the antiviral particle A of 1) and / or 2) above, if it is a mixed particle separately containing particles containing a styrene polymer derivative compound (particle Aa) and particles containing an unsaturated carboxylic acid derivative compound (particle Ab), the mass ratio of particle Aa to particle Ab can be set to 30:70 to 70:30, or even 40:60 to 60:40. These particles Aa and particle Ab may be particles that are commercially available for various applications containing their respective components, or they may be commercially available in a solvent-based state and then dried and molded into particles for use.

[0070] In the present invention, in addition to antiviral particle A, antiviral particle B different from antiviral particle A may be further contained, to the extent that it does not affect the effects of the present invention. Antiviral particle B is not particularly limited as long as it is an antiviral particle that does not fall under antiviral particle A as specified in 1), 2), and 3) above. When antiviral particle A and antiviral particle B are used in combination, the mass ratio of antiviral particle A to antiviral particle B is not limited, but it is preferable to set it in the range of 10:1 to 50:40.

[0071] The reason why the antiviral particle A described in 1) and / or 2) above exhibits antiviral activity is not limited to the mechanism speculated below, but for example, influenza viruses enter host cells by binding to sugar chain receptors (with neuraminic acid at the sugar chain ends) on the surface of host cells. Since copolymers containing styrene sulfonate have ionic groups similar to neuraminic acid, it is thought that they exert an antiviral effect by binding to the virus instead of the host cell and capturing the virus, thereby preventing the virus from binding to the receptor on the host cell. In addition, unsaturated carboxylic acid derivative compounds release hydroxyl groups (OH) upon contact with water. - It is thought that the hydroxyl group exerts an antiviral effect by generating ). Furthermore, although the reason why the antiviral particle A in 3) above exhibits antiviral activity against enveloped viruses is not limited to a specific mechanism, it is thought to be due to a similar effect to that of the copolymer containing styrene sulfonate mentioned above.

[0072] The content of antiviral particles per 100 parts by mass of cross-linked curable resin is preferably 0.5 parts by mass or more and 15 parts by mass or less, and more preferably 1 part by mass or more and 10 parts by mass or less.

[0073] The antiviral particles used in this invention have an average particle diameter of 1 μm or more and 7 μm or less for primary particles. In this specification, the average particle diameter of primary particles is the value specified as the mass-average value D50 in particle size distribution measurement by laser diffraction. The shape of the antiviral particles (primary particles) is not limited, but examples include spheres, ellipsoids, polyhedra, and flake shapes. Furthermore, the shape of the aggregated particles formed by the aggregation of such primary particles is not limited, but examples include irregular shapes and cluster shapes (like bunches of grapes).

[0074] In the present invention, the crosslinkable curable resin layer contains antiviral particles, and in observation of the cross-section in the thickness direction of the crosslinkable curable resin layer, the area occupied by antiviral particles out of 100% of the area of ​​the cross-section is 1% or more and 10% or less. Furthermore, the crosslinkable curable resin layer contains aggregated particles formed by the aggregation of primary antiviral particles, and in observation of the cross-section, the area occupied by aggregated particles out of 100% of the area occupied by antiviral particles is 40% or more.

[0075] Here, the method for calculating the area occupied by antiviral particles and the area occupied by aggregated particles within 100% of the area occupied by antiviral particles, when observing the cross-section in the thickness direction of the cross-linked curable resin layer, is as follows. The equipment used in this specification is a digital microscope (model number: VHX-7000, magnification 200x, manufactured by Keyence Corporation). 1) To observe the cross-section of the decorative sheet in the thickness direction, cut the decorative sheet in the thickness direction using a sharp blade such as a single-edged trimming razor or microtome in an arbitrarily selected area. 2) Observe the cross-section of the cut decorative sheet in the thickness direction (width 200 μm; "width" is perpendicular to the thickness direction) using a digital microscope and obtain a cross-sectional photograph. 3) Using the "Area Measurement" function of the "Measurement / Scale" function of the digital microscope, from the cross-sectional photograph (an example of a cross-sectional photograph is shown in Figure 2), a) Area of ​​antiviral particles (primary particles), b) Area of ​​antiviral particles (aggregated particles), and c) Calculate the area of ​​the cross-linked curing resin layer (width 200 μm). 4) From the calculated areas, calculate the percentage (occupancy rate) of the area occupied by antiviral particles in 100% of the cross-sectional area of ​​the cross-sectional area of ​​the cross-linked curing resin layer. Occupancy rate (%)=[(a+b) / c]×100 5) The average value obtained by performing the above procedure 10 times is defined as the occupancy rate (%) of antiviral particles. 6) Furthermore, the value shown by [b / (a+b)] × 100 is defined as the ratio (occupancy rate) of the area occupied by agglutinated particles out of 100% of the area occupied by antiviral particles.

[0076] The average particle diameter of the agglutinated antiviral particles was calculated by drawing a circle with the smallest diameter that completely contains the agglutinated particles in a cross-sectional photograph, as shown in Figure 1, for example. The diameter of this circle was defined as the particle diameter of the agglutinated particles, and the average particle diameter of the agglutinated particles within a width of 1 cm was calculated. "Width" is the direction perpendicular to the thickness direction. This is defined as the average particle diameter of the agglutinated particles. In this invention, the average particle diameter of the agglutinated antiviral particles is not limited, but is preferably 15 μm to 60 μm, and more preferably 20 μm to 40 μm. The average particle diameter of the agglutinated particles may exceed the thickness of the smooth portion of the cross-linked curable resin layer, which will be described later. In this case, the protrusions (raised areas of the cross-linked curable resin layer) caused by the agglutinated particles have the effect of further improving slip resistance.

[0077] In the present invention, when observing the cross-section of the cross-linked curable resin layer in the thickness direction, the area occupied by antiviral particles (occupancy rate) of 100% of the cross-sectional area should be 1% or more and 10% or less, with 2% or more and 8% or less being preferred. Within this range, the antiviral properties of the decorative sheet can be ensured. Furthermore, in the present invention, when observing the cross-section, the area occupied by aggregated particles (occupancy rate) of 100% of the area occupied by antiviral particles should be 40% or more, with 50% or more being preferred, with 60% or more and 90% or less being more preferred.

[0078] The thickness of the cross-linked curable resin layer is such that the average thickness of the smooth portion is 10 μm or more if there are no protrusions caused by the aggregated particles, and the average thickness of the smooth portion excluding the protrusions is 10 μm or more if there are protrusions caused by the aggregated particles. The average thickness of the smooth portion should be 10 μm or more, but 12 μm or more is preferable, and the upper limit of the average thickness is about 35 μm. The average thickness of the cross-linked curable resin layer is the average value measured in a flat area (see thickness A in Figure 3) where no embossed uneven pattern or protrusions (raised areas of the cross-linked curable resin layer) caused by aggregated particles are formed, and in this specification it means the average value of the thickness of 10 points in a cross-sectional photograph of the cross-linked curable resin layer with a width of 1 cm. "Width" is the direction perpendicular to the thickness direction.

[0079] A cross-linked curable resin layer can be formed, for example, by applying a cross-linked curable resin layer-forming composition containing a cross-linked curable resin and antiviral particles (primary particles) onto a primer layer using a known coating method such as gravure coating or roll coating, and then curing the resin. Specifically, after applying the cross-linked curable resin layer-forming composition, the antiviral particles (primary particles) aggregate in the coating film before complete curing to form aggregated particles, thereby satisfying the predetermined requirements of the present invention. For primary particles to aggregate, the coating film needs to have a certain thickness, but considering that the average particle diameter of the primary particles is 1 μm or more and 7 μm or less, the average thickness of the coating film should be 10 μm or more (similar to the average thickness of the cross-linked curable resin layer after curing). Furthermore, for aggregation, it is necessary for the primary particles to move within the coating film, and a soft resin is used as the cross-linked curable resin (with a Martens hardness of 30 N / mm² for the cross-linked curable resin layer after curing). 2 Above 100 N / mm 2 By combining it with the following resins, it can be appropriately adjusted to obtain the desired aggregated particles.

[0080] In this invention, the Martens hardness of the cross-linked curable resin layer is 30 N / mm². 2 Above 100 N / mm 2 The following, preferably 60 N / mm 2 More than 80N / mm 2 The following applies:

[0081] In this specification, the Martens hardness is measured using a Martens hardness measuring device PICODENTOR HM-500 (manufactured by Fischer Instruments) in accordance with ISO 14577. Specifically, the measurement is performed by pressing a diamond indenter (Vickers indenter) shown in Figure 6(a) into the sample as shown in Figure 6(b). The pressing conditions are as follows: at room temperature (laboratory ambient temperature), a load of 0 to 5 mN is first applied for 10 seconds, then a load of 5 mN is held for 5 seconds, and finally the load is removed from 5 to 0 mN for 10 seconds, as shown in Figure 6(c). In this specification, in order to avoid the influence of the hardness of layers other than the cross-linked curable resin layer, the Martens hardness of the cross-section of the cross-linked curable resin layer was measured. In this process, the decorative sheet was embedded in resin (such as a cold-curing two-component epoxy resin or a UV-curing resin), left at room temperature (23±5℃) for 24 hours or more to cure, and then the cured embedded sample was cut and mechanically polished to expose the cross-section of the cross-linked curing resin layer. The Martens hardness of the cross-section was then measured by pressing a diamond indenter into the cross-section (avoiding any fine particles such as fillers present in the layer).

[0082] In this invention, the Martens hardness of the cross-linked curable resin layer is 30 N / mm². 2 Above 100 N / mm 2 As described below, and because the antiviral particles are contained in the form of predetermined aggregated particles, an exposed area of ​​the cross-linked curable resin that exhibits anti-slip properties is ensured on the surface of the cross-linked curable resin layer. As a result, the slip resistance value (CSR value) of the cross-linked curable resin is 0.40 or higher, preferably 0.45 or higher. In this specification, the slip resistance value (CSR value) is the value measured using a Tokyo Institute of Technology slip test machine (OY·PSM) with socks.

[0083] In the present invention, a phenyl ether derivative compound may be included in the cross-linked curable resin layer to complement its antiviral performance. Examples of phenyl ether derivative compounds include polyoxyethylene alkyl ethers, which are known to exhibit antiviral properties as ether-type nonionic surfactants.

[0084] Furthermore, the cross-linked curable resin layer may contain various additives, such as colorants (dyes, pigments, etc.), fillers (inorganic fillers, etc.), weathering agents, defoamers, leveling agents, thixotropy-imparting agents, flame retardants, antibacterial agents different from the antiviral particles, and anti-allergen agents different from the antiviral particles, to the extent that they do not affect the predetermined anti-slip and antiviral properties. For example, in the present invention, in addition to the antiviral particles, an embodiment can be adopted that further contains at least one selected from the group consisting of antibacterial agents and anti-allergen agents. In addition, inorganic fillers are often used as matting agents, but by including inorganic fillers in the cross-linked curable resin layer, it is also possible to expect the effect of suppressing curing shrinkage of the surface protective layer.

[0085] The above-mentioned antibacterial agents include inorganic antibacterial agents and organic antibacterial agents. In particular, inorganic antibacterial agents are desirable because they are generally safer and have superior durability and heat resistance compared to organic antibacterial agents. In this specification, inorganic antibacterial agents are those in which antibacterial metals such as silver, copper, and zinc are supported on various inorganic carriers.

[0086] The above-mentioned anti-allergen agent contains either an inorganic compound or an organic compound, and each may be used individually or mixed with two or more different compounds. The inorganic compound is preferably a material supporting a metal.

[0087] As the inorganic material for the inorganic compound, at least one selected from the group consisting of titanium dioxide, calcium phosphate, calcium silicate, zirconium phosphate, zeolite, silica alumina, magnesium silicate, and magnesium phosphate is preferred, among which titanium dioxide and zirconium phosphate are preferred.

[0088] The metal supported on the inorganic material is preferably at least one selected from the group consisting of silver, gold, platinum, zinc, and copper, with zinc being the most preferred among these. Commercially available products such as JGC Catalysts' "Atomy Ball TZ-R: Zinc Supported on Titanium Oxide" can be suitably used, and these anti-allergen agents are effective against various allergens such as dust mites and pollen.

[0089] The organic compound is preferably a polymer containing at least one monomer component selected from the group consisting of a water-insoluble polymer containing a phenolic hydroxyl group or a polyphenol compound supported on an inorganic solid acid, styrene sulfonic acid, and its salts.

[0090] As non-water-soluble polymers containing phenolic hydroxyl groups, commercially available products such as "Allerbuster" (product name) manufactured by Sekisui Chemical Co., Ltd. and "Marukalinker M" (product name) manufactured by Maruzen Petroleum Co., Ltd. can be used. Furthermore, as a combination of polyphenol compounds and zirconium compounds, products such as "Allerremove" (product name) manufactured by Toagosei Co., Ltd. can be used. These anti-allergen agents are effective against various allergens such as dust mites and pollen.

[0091] As at least one monomer component selected from the group consisting of styrenesulfonic acid and its salts, materials such as those shown in Japanese Patent No. 6136433 can be used.

[0092] Other examples of mixtures of organic and inorganic compounds include anionic phenolic compounds and zinc-based materials with anti-allergenic properties.

[0093] Anionic phenolic materials can be appropriately selected from tannins, tannic acid-tartrate, phenolsulfonic acid formaldehyde resin, sulfone compounds of novolac-type resins, methanesulfonic acid of novolac-type resins, methanesulfonic acid of resol-type resins, benzylated phenolsulfonic acid, thiophenol compounds, dihydrooxy, diphenylsulfone compounds, ligant compounds, and metal chelate compounds thereof.

[0094] The zinc-based material is appropriately selected from water-soluble zinc compounds or water-insoluble zinc compounds, zinc / metal oxide composite materials, etc. Preferably, the water-insoluble zinc compound and / or water-insoluble zinc-metal oxide composite particles are dispersed in water, the particle size is 50 μm or less, and the metal oxide contains at least one of titania, silica, or alumina.

[0095] Embossed finish Embossing is performed to impart a desired texture, such as a wood grain pattern, to a decorative sheet, and may be applied to a transparent resin layer and / or a cross-linked curing resin layer. For example, after heating and softening the cross-linked curing resin layer, the texture is imparted by pressing and molding it with an embossing plate having the desired shape of relief, and then cooling and fixing it. Embossing can be performed using a known sheet-fed or rotary embossing machine.

[0096] Examples of embossed patterns include wood grain grooves, raised grain patterns (raised annual rings), hairline finishes, sandblasted textures, and pear-skin finishes.

[0097] If embossing is applied, ink may be filled into the embossed recesses by wiping, if necessary. For example, ink can be filled into the embossed recesses by scraping the surface with a doctor blade. Typically, a two-component curing urethane resin ink can be used as the filling ink (wiping ink). In particular, by performing wiping on the wood grain grooves and irregularities, it is possible to express a design that more closely resembles actual wood grain, thereby increasing the value of the product.

[0098] backside primer layer A primer layer may be provided on the back surface of the base sheet as needed. This is particularly effective when bonding the base sheet to a decorative panel base material to produce a decorative panel.

[0099] The backside primer layer can be formed by applying a known primer to the substrate sheet. Examples of primers include urethane resin-based primers made of acrylic-modified urethane resin (acrylic urethane copolymer resin), polycarbonate-based acrylic urethane copolymer resin, etc., primers made of urethane-cellulose resin (for example, a resin obtained by adding hexamethylene diisocyanate to a mixture of urethane and nitrate), and resin-based primers made of acrylic and urethane block copolymers.

[0100] The primer may contain additives as needed. Examples of additives include fillers such as calcium carbonate and clay, flame retardants such as magnesium hydroxide, antioxidants, lubricants, foaming agents, UV absorbers, and light stabilizers. The amount of additives can be appropriately set according to the product characteristics.

[0101] The thickness of the primer layer on the back surface is not particularly limited, but is usually 0.01 to 10 μm, preferably about 0.1 to 1 μm.

[0102] Synthetic resin backer layer A synthetic resin backer layer may be provided on the back surface of the base sheet as needed. The presence of a synthetic resin backer layer further improves the impact resistance of the decorative sheet. If the aforementioned back surface primer layer is also provided, the synthetic resin backer layer and the back surface primer layer should be applied to the back surface of the base sheet in that order, starting from the base sheet side.

[0103] Examples of resins that make up the synthetic resin backer layer include polypropylene, ethylene-vinyl alcohol copolymer, polymethylene, polymethylpentene, polyethylene terephthalate, highly heat-resistant polyalkylene terephthalate (for example, polyethylene terephthalate in which part of the ethylene glycol is replaced with 1,4-cyclohexanedimethanol or diethylene glycol, so-called trade name PET-G (manufactured by Eastman Chemical Company)), polybutylene terephthalate, polyethylene naphthalate, polyethylene naphthalate-isophthalate copolymer, polycarbonate, polyarylate, polyimide, polystyrene, polyamide, ABS, diene rubbers such as styrene-butadiene rubber, isoprene rubber, and chloroprene rubber, non-diene rubbers such as butyl rubber and ethylene propylene rubber, natural rubber, and thermoplastic elastomers. These resins can be used individually or in combination of two or more.

[0104] The thickness of the synthetic resin backer layer is preferably 0.1 to 0.6 mm, more preferably 0.15 to 0.45 mm, and even more preferably 0.20 to 0.40 mm. By having the lower limit of the synthetic resin backer layer thickness within the above range, the impact resistance of the decorative sheet is further improved. Furthermore, by having the upper limit of the synthetic resin backer layer thickness within the above range, warping of the decorative sheet is further suppressed.

[0105] Vesicling of various additives contained in each layer of the decorative sheet The various additives added to each of the above-mentioned layers of the decorative sheet of the present invention (such as inorganic fillers added to the primer layer and the cross-linked curing resin layer) are preferably vesicled. The method for vesicling the various additives is not particularly limited and can be done by known methods, with supercritical reverse-phase evaporation being preferred.

[0106] Vesicle formation methods include the supercritical reverse-phase evaporation method, as well as the Bangham method, extrusion method, hydration method, reverse-phase evaporation method, and freeze-thaw method. Briefly explaining these vesicle formation methods, the Bangham method involves placing chloroform or a chloroform / methanol mixed solvent in a container such as a flask, then adding phospholipids and dissolving them. After that, the solvent is removed using an evaporator to form a thin film of lipids, and after adding a dispersion of additives, vesicles are obtained by hydrating and dispersing with a vortex mixer. The extrusion method involves preparing a phospholipid solution of the thin film and obtaining vesicles by passing it through a filter instead of using a mixer as an external perturbation in the Bangham method. The hydration method is almost the same preparation method as the Bangham method, but instead of using a mixer, vesicles are obtained by gently stirring and dispersing. The reverse-phase evaporation method involves dissolving phospholipids in diethyl ether or chloroform, adding a solution containing additives to create a W / O emulsion, removing the organic solvent from the emulsion under reduced pressure, and then adding water to obtain vesicles. The freeze-thaw method uses cooling and heating as external perturbations, and vesicles are obtained by repeating this cooling and heating process.

[0107] The supercritical reverse-phase evaporation method is described in detail below. The supercritical reverse-phase evaporation method is a method for forming capsule-shaped vesicles containing the various additives as encapsulating materials in a single membrane by adding an aqueous phase containing various water-soluble or hydrophilic encapsulating materials to a mixture obtained by uniformly dissolving a substance that forms the outer membrane of a vesicle in carbon dioxide in a supercritical state or under temperature or pressure conditions above the supercritical point. Supercritical carbon dioxide refers to carbon dioxide in a supercritical state above the critical temperature (30.98°C) and critical pressure (7.3773±0.0030 MPa), while carbon dioxide under temperature or pressure conditions above the critical point refers to carbon dioxide under conditions where only the critical temperature or only the critical pressure exceeds the critical conditions. By this method, single-layer lamellar vesicles with a diameter of 50 to 800 nm can be obtained. Generally, a vesicle is a general term for a vesicle containing a liquid phase inside a vesicle with a closed spherical membrane structure, and in particular, those whose outer membrane is composed of biolipids such as phospholipids are called liposomes.

[0108] Examples of the phospholipids mentioned above include glycerophospholipids such as phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidic acid, phosphatidylglycerol, phosphatidylinositol, cardiolipin, egg yolk lecithin, hydrogenated egg yolk lecithin, soy lecithin, and hydrogenated soy lecithin, as well as sphingophospholipids such as sphingomyelin, ceramide phosphorylethanolamine, and ceramide phosphorylglycerol.

[0109] The materials that make up the outer film may also include nonionic surfactants or dispersants such as mixtures thereof with cholesterol or triacylglycerols.

[0110] As the nonionic surfactants mentioned above, one or more of the following can be used: polyglycerin ether, dialkylglycerin, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl ether, polyoxyethylene sorbitan fatty acid ester, sorbitan fatty acid ester, polyoxyethylene polyoxypropylene copolymer, polybutadiene-polyoxyethylene copolymer, polybutadiene-poly2-vinylpyridine, polystyrene-polyacrylic acid copolymer, polyethylene oxide-polyethylethylene copolymer, polyoxyethylene-polycaprolactam copolymer, etc.

[0111] The above-mentioned cholesterols may include one or more types such as cholesterol, α-cholestanol, β-cholestanol, cholestan, desmosterol (5,24-cholestadien-3β-ol), sodium cholate, and cholecalciferol.

[0112] The outer membrane of the liposome described above may be formed from a mixture of phospholipid and a dispersant. In the decorative sheet of the present invention, by using liposomes formed from phospholipid for the outer membrane, the compatibility between the resin composition, which is the main component of each layer, and various additives can be improved.

[0113] 2. Antiviral adhesive sheet for non-slip flooring The anti-slip floor antiviral adhesive-processed sheet of the present invention (the adhesive-processed sheet of the present invention) is composed of a laminate comprising, in order in the thickness direction, at least an adhesive sheet and a decorative sheet of the present invention. The adhesive sheet is not particularly limited, and any adhesive sheet used in the field of decorative sheets and other functional sheets can be used as appropriate. The adhesive-processed sheet of the present invention, having an adhesive sheet on its back surface, can be attached to the surface of various floor articles and adherends, and can optionally be given antiviral properties.

[0114] 3. Antiviral decorative laminate for non-slip flooring The antiviral decorative panel for slip-resistant floors of the present invention (decorative panel of the present invention) is composed of a laminate comprising, in order in the thickness direction, a decorative panel base material and a decorative sheet of the present invention or an adhesive processed sheet of the present invention.

[0115] Figure 5 shows an example of an antiviral decorative panel 13 for anti-slip flooring, in which the decorative sheet 1 of the present invention (with the side opposite to the cross-linked curing resin layer bonded to the decorative panel base 12) is laminated in this order on a decorative panel base 12.

[0116] While not limited to specific materials, examples of decorative panel substrates include at least one of the following: medium-density wood fiberboard, high-density wood fiberboard, particleboard, softwood plywood, hardwood plywood, fast-growing tree plywood, cork sheet, cork-containing composite substrate, thermoplastic resin board (resin board mainly composed of polyvinyl chloride resin, polypropylene resin, polyethylene resin, acrylic resin, ABS resin, etc., or foamed versions thereof). These decorative panel substrates may be used individually or by laminating two or more types together.

[0117] Examples of coniferous trees include fir, larch, spruce, cedar, cypress, pine, redwood, and spruce. Examples of broad-leaved trees include lauan, linden, birch, sen, beech, oak, and melanchi. Examples of fast-growing trees include poplar, falcata, acacia, chameleon, eucalyptus, and terminalia.

[0118] When using wood-based plywood such as softwood plywood, hardwood plywood, or fast-growing tree plywood, the number of layers (ply count) of wood veneers is not limited, but it is usually preferable to have 3 to 7 layers, and more preferably 5 to 7 layers. Furthermore, the adhesive used in the production of wood-based plywood is not limited, and a wide range of known woodworking adhesives can be used. Examples of adhesives include those containing polyvinyl acetate, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ionomer, butadiene-acrylonitrile rubber, neoprene rubber, and natural rubber as active ingredients. In addition, thermosetting adhesives such as melamine-based, phenol-based, and urea-based (vinyl acetate-urea-based, etc.) adhesives can also be used.

[0119] The cork sheet can be either so-called natural cork, which is a highly elastic material obtained by peeling and processing the cork tissue of the bark of the cork oak, or so-called synthetic cork, which is made to resemble cork. The cork sheet may be a single layer, or it may be a laminate of multiple cork sheets with different elastic moduli and densities.

[0120] Examples of the cork-containing composite substrate include composite materials obtained by laminating and bonding a cork sheet with other materials (for example, medium-density wood fiberboard, high-density wood fiberboard).

[0121] The thickness of the decorative laminate base material is not limited, but it is preferably around 2 to 15 mm, and more preferably around 2 to 12 mm.

[0122] The lamination method for bonding a decorative sheet or adhesive sheet to a decorative panel substrate is not limited; for example, a method of bonding them together with an adhesive can be employed. Furthermore, if the adhesive sheet has sufficient adhesion to the decorative panel substrate, a method of bonding the adhesive sheet and the decorative panel substrate without using an additional adhesive can be employed. The adhesive can be appropriately selected from known adhesives depending on the type of material to be bonded. Examples include urethane, acrylic, urethane-acrylic, polyvinyl acetate, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ionomer, as well as butadiene-acrylonitrile rubber, neoprene rubber, and natural rubber. These adhesives can be used individually or in combination of two or more types. [Examples]

[0123] The present invention will be specifically described below with reference to examples, comparative examples, and test examples. However, the present invention is not limited to what is shown in the examples.

[0124] Example 1 A 60 μm thick colored polypropylene film was prepared as the base sheet.

[0125] A backside primer layer (2 μm thick) was formed on the back surface of the base sheet, and a pattern layer (2 μm thick) was formed on the front surface of the base sheet by gravure printing.

[0126] A transparent adhesive layer with a thickness of 2 μm was formed on the patterned layer using a urethane-based resin.

[0127] A transparent resin layer was formed by laminating a sheet of transparent random polypropylene resin to a thickness of 80 μm on a transparent adhesive layer using an extrusion lamination method.

[0128] After applying corona discharge treatment to the surface of the transparent resin layer, a primer layer was formed by coating it with a two-component curing urethane resin to a thickness of 2 μm.

[0129] A cross-linked curable resin layer was formed by applying the following cross-linked curable resin layer composition to the surface of the primer layer using a gravure coating method with a coating thickness of 15 μm. Then, in an environment with an oxygen concentration of 200 ppm or less, the electron beam curable resin was cured by irradiating it with an electron beam irradiation device under the conditions of an acceleration voltage of 165 KeV and 5 Mrad, thereby forming a cross-linked curable resin layer and producing a decorative sheet.

[0130] (Crosslinked curable resin layer forming composition) • A total of 100 parts by mass of urethane acrylate resin, consisting of 30 parts by mass of polyfunctional urethane oligomer and 70 parts by mass of bifunctional oligomer, as the crosslinkable curable resin. • Antiviral particles (content: 3 parts by mass per 100 parts by mass of resin) Organic antiviral particles: Composite particles containing styrene resin and phenyl ether derivative in a mass ratio of 1:1. Styrene resin = Styrene resin particles manufactured by Polysciences, product name "Microsphere (particle size 4.5 μm)", Phenylen ether derivative = Polyoxyethylene alkyl ether manufactured by Kao Chemicals, trade name "Emulgen 707".

[0131] Example 2 A decorative sheet was prepared in the same manner as in Example 1, except that 9 parts by mass of a photoreaction initiator (product number "Irgacure 184", manufactured by BASF) was added to 100 parts by mass of a crosslinkable curable resin, and a crosslinkable curable resin layer was formed by irradiating it with ultraviolet light of a wavelength of 300 nm using an ultraviolet irradiation device.

[0132] Comparative Example 1 A decorative sheet was prepared in the same manner as in Example 1, except that the antiviral particles were silver-supported phosphate-based glass particles (product number "PG-711", average particle size 1 μm, manufactured by Kowa Glass), and the content was 10 parts by mass per 100 parts by mass of resin.

[0133] Comparative Example 2 A decorative sheet was prepared in the same manner as in Example 1, except that the antiviral particles were designated as antiviral particle A, and the content of antiviral particle A per 100 parts by mass of resin was 5 parts by mass. • Antiviral particle A (a composite particle containing A1, A2, and A3 below in a mass ratio of 2:3:1) A1: Particles containing a styrene polymer derivative compound: Polystyrene sulfonic acid derivative manufactured by Shima Trading Co., Ltd., trade name "VERSA-TL3" A2: Particles containing unsaturated carboxylic acid derivative compounds: Particles formed by drying BYK's solvent-based unsaturated polycarboxylic acid polymer, trade name "BYK-P104". A3: Viral additive: Polyoxyethylene alkyl ether manufactured by Kao Chemicals, trade name "Emulgen 707".

[0134] Test Example 1 For the decorative sheets prepared in Examples 1-2 and Comparative Examples 1-2, the average particle size (μm) of aggregated antiviral particles in the cross-linked curable resin layer, the percentage of antiviral particles occupying 100% of the cross-sectional area in the thickness direction, the percentage of aggregated antiviral particles occupying 100% of the area occupied by antiviral particles in the cross-sectional observation, the slip resistance value (CSR value), and the antiviral performance were evaluated. The measurement and evaluation methods are as follows.

[0135] <Slip resistance> For each decorative panel, the slip resistance value (CSR value) using a sock was measured using the Tokyo Institute of Technology-type slip test machine (OY·PSM). The evaluation criteria were as follows, with a value of + or higher considered a pass. ++: Measured value is 0.45 or higher + : Measured value is 0.40 or higher but less than 0.45 - : The measured value is less than 0.40.

[0136] <Antiviral performance> The decorative sheets prepared in the examples and comparative examples were subjected to antiviral performance tests in accordance with the antiviral testing method (ISO21702), and the antiviral activity values ​​against influenza virus were evaluated based on the following evaluation criteria. The evaluation criteria are as follows. Virus species: Enveloped virus (influenza virus) + : Antiviral activity value of 2.0 or higher, - : Antiviral activity value is less than 2.0.

[0137] The results are shown in Table 1 below.

[0138] [Table 1] [Explanation of Symbols]

[0139] 1. Antiviral decorative sheet for non-slip flooring 2. Base sheet 3. Pattern layer 4.Transparent adhesive layer 5.Transparent resin layer 6. Primer layer 7.Crosslinked curing resin layer (surface protection layer) 8. Primer layer on the back side 9-1. Antiviral particles (primary particles) 9-2. Antiviral particles (aggregated particles) 10. Adhesive sheet 11. Antiviral adhesive sheet for non-slip flooring 12. Decorative panel base material 13. Antiviral decorative laminate for non-slip flooring A. Thickness of the smooth portion of the cross-linked curing resin layer (surface protective layer)

Claims

1. A decorative sheet having a cross-linked curing resin layer on its outermost surface, (1) The cross-linked curable resin layer has a Martens hardness of 30 N / mm². ２ Above 100 N / mm ２ The following conditions apply, and the sliding resistance value (C.S.R. value) is 0.40 or higher. (2) The cross-linked curable resin layer contains a cured product of the cross-linked curable resin and antiviral particles, and in observation of the cross-section of the cross-linked curable resin layer in the thickness direction, the area occupied by the antiviral particles out of 100% of the area of ​​the cross-section is 1% or more and 10% or less. (3) The crosslinked curable resin is an ionizing radiation curable resin, and is a resin mixture containing 50% by mass or more and 90% by mass or less of a urethane (meth)acrylate oligomer (A) having two radical polymerizable unsaturated groups per molecule and a weight-average molecular weight of 1000 to 3000, and 10% by mass or more and 50% by mass or less of aliphatic urethane (meth)acrylate oligomer (B) having three to fifteen radical polymerizable unsaturated groups per molecule. (4) The antiviral particles have an average particle diameter of 1 μm or more and 7 μm or less for the primary particles, the cross-linked curable resin layer contains aggregated particles formed by the aggregation of the primary particles, the average particle diameter of the aggregated particles is 15 μm or more and 60 μm or less, and in the cross-sectional observation, the area occupied by the aggregated particles is 40% or more of the 100% area occupied by the antiviral particles. (5) The cross-linked curable resin layer has protrusions caused by the aggregated particles, and the average thickness of the smooth portion excluding the protrusions is 10 μm or more. An antiviral decorative sheet for non-slip floors, characterized by the following features.

2. The anti-slip flooring antiviral decorative sheet according to claim 1, wherein the shape of the aggregated particles is at least one of irregular shape and cluster shape.

3. The antiviral decorative sheet for anti-slip flooring according to claim 1 or 2, wherein the area occupied by the antiviral particles in 100% of the area of ​​the cross-section is 2% or more and 8% or less.

4. The anti-slip flooring antiviral decorative sheet according to any one of claims 1 to 3, wherein the average particle diameter of the aggregated particles is 20 μm or more and 40 μm or less.

5. The Martens hardness of the aforementioned cross-linked curable resin layer is 60 N / mm². ２ 80N / mm or more ２ The anti-slip flooring antiviral decorative sheet according to any one of claims 1 to 4 below.

6. The antiviral decorative sheet for anti-slip flooring according to any one of claims 1 to 5, wherein the antiviral particles are organic antiviral particles.

7. The organic antiviral particles have hydrophilic groups, as described in claim 6, for the anti-slip decorative sheet for floors.

8. The anti-slip flooring antiviral decorative sheet according to any one of claims 1 to 7, wherein the average thickness of the smooth portion of the cross-linked curable resin layer is 12 μm or more and 35 μm or less.

9. The antiviral decorative sheet for anti-slip flooring according to any one of claims 1 to 8, wherein the sheet contains 0.5 parts by mass or more and 15 parts by mass or less of the antiviral particles per 100 parts by mass of the cross-linked curable resin.

10. The anti-slip floor antiviral decorative sheet according to any one of claims 1 to 9, comprising a laminate comprising, in order in the thickness direction, a base sheet, a pattern layer, a transparent thermoplastic resin layer, and the crosslinked curable resin layer.

11. An anti-slip flooring antiviral adhesive sheet comprising, in order in the thickness direction, an adhesive sheet and, in order, an antiviral decorative sheet for anti-slip flooring according to any one of claims 1 to 10.

12. Anti-slip flooring antiviral decorative panel comprising, in order in the thickness direction, a decorative panel base material and at least an anti-slip flooring antiviral decorative sheet according to any one of claims 1 to 10 or an anti-slip flooring antiviral adhesive sheet according to claim 11.

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