Decorative sheet and decorative material

Abstract

To provide a decorative sheet and a decorative material capable of exhibiting excellent designability and anti-slip properties and anti-viral properties.SOLUTION: There is provided a decorative sheet 10 in which protrusions 10a, 10b formed on a transparent resin layer 13 are less than 70 μm in outer diameter and less than 200 pieces or less per 1 mm2, in a first area A of the transparent resin layer 13 overlapping in plan view with a first pattern part of the pattern of a pattern layer 12, the protrusions 10a are randomly arranged in a square shape in plan view, in a second area B of the transparent resin layer 13 overlapping in plan view with a second pattern part different from the first pattern part of the pattern layer 12, the protrusions 10b are arranged regularly in a cross-shaped arrangement in plan view, and further, the area ratio of the protrusions 10b regularly arranged in a cross-shaped arrangement in plan view in the second area B to the protrusions 10a, 10b formed on the transparent resin layer 13 is 10% or more and 50% or less.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a decorative sheet and a decorative material for decorating the surfaces of flooring materials in detached houses, condominiums, apartments, etc. [Background technology]

[0002] For flooring in detached houses, condominiums, apartments, etc., decorative materials that have anti-slip properties that prevent falls by making the floor less slippery by attaching a decorative sheet with an uneven surface to a base material such as wood plywood are widely used (for example, see Patent Documents 1 and 2 below). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2007-135482 A [Patent Document 2] JP 2013-217066 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the decorative sheets described above, even if a design imitating the grain or vessels of natural wood is printed, the uneven surface shape reduces the design of the natural wood pattern. Furthermore, the uneven surface shape reduces the antiviral properties.

[0005] In view of the above, an object of the present invention is to provide a decorative sheet and a decorative material that can exhibit excellent design properties, anti-slip properties, and antiviral properties. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the decorative sheet according to the present invention is a decorative sheet comprising a base layer, a pattern layer provided on the base layer, and a transparent resin layer provided on the pattern layer, and a three-dimensional portion consisting of at least one of a convex portion and a concave portion is formed in the transparent resin layer, and the three-dimensional portion formed in the transparent resin layer has an outer diameter of less than 70 μm and a width of less than 1 mm. 2 the three-dimensional portions are formed with 200 or less per pixel, are randomly arranged in a circular or polygonal shape in a first region overlapping in a planar view with a first pattern portion of the pattern of the pattern layer, and are regularly arranged in a cross shape in a second region overlapping in a planar view with a second pattern portion of the pattern different from the first pattern portion of the pattern layer, and the area ratio of the three-dimensional portions regularly arranged in a cross shape in a planar view in the second region to the area of ​​the three-dimensional portions formed in the transparent resin layer is 10% or more and 50% or less.

[0007] Moreover, the decorative sheet according to the present invention is preferably the decorative sheet described above, further comprising a surface protective layer provided on the transparent resin layer and containing an antiviral agent.

[0008] Furthermore, in the decorative sheet according to the present invention, it is preferable that the surface protective layer contains the antiviral agent in an amount of 0.2 parts by mass or more and 10 parts by mass or less.

[0009] In addition, in the decorative sheet according to the present invention, it is preferable that the area ratio in the above-mentioned decorative sheet is 30% or less.

[0010] In addition, in the decorative sheet of the present invention, it is preferable that, in the decorative sheet described above, the three-dimensional portions randomly arranged in a circular or polygonal shape in a planar view in the first region have an outer diameter of 25 μm or more and 60 μm or less.

[0011] In addition, the decorative sheet according to the present invention is the decorative sheet described above, wherein the three-dimensional portions randomly arranged in a circular or polygonal shape in a plan view in the first region are spaced apart from each other by 1 mm 2It is preferable that the number of the particles per unit area is within a range of 70 to 160.

[0012] In addition, it is preferable that in the decorative sheet of the present invention, in the above-mentioned decorative sheet, the three-dimensional portions randomly arranged in a circular or polygonal shape in a planar view in the first region are formed based on information calculated by random number calculation.

[0013] In addition, the decorative sheet of the present invention is preferably the decorative sheet described above, in which a surface protective layer is provided on the transparent resin layer, and the surface protective layer contains at least one of a thermosetting resin, an ultraviolet-curable resin, and an electron beam-curable resin.

[0014] On the other hand, in order to solve the above-mentioned problems, the decorative material of the present invention is characterized by having the decorative sheet of the present invention described above and a substrate with the decorative sheet attached to its surface. Effect of the Invention

[0015] According to the decorative sheet and decorative material of the present invention, the three-dimensional portion formed in the transparent resin layer has an outer diameter of less than 70 μm and a thickness of 1 mm. 2 The three-dimensional portions of the first region are arranged randomly in a circular or polygonal shape in a planar view, while the three-dimensional portions of the second region are arranged regularly in a cross shape in a planar view, and the area ratio of the three-dimensional portions in the second region that are regularly arranged in a cross shape in a planar view to the total area of ​​the three-dimensional portions formed in the transparent resin layer is 10% or more and 50% or less, thereby achieving excellent design, anti-slip properties, and anti-viral properties. [Brief description of the drawings]

[0016] [Figure 1] 1 is a cross-sectional view showing a schematic configuration of a main embodiment of a decorative sheet according to the present invention. [Diagram 2] FIG. 2 is an enlarged plan view of the decorative sheet of FIG. [Diagram 3]FIG. 3 is an excerpted, enlarged view of a first region of FIG. 2; [Figure 4] FIG. 3 is an excerpted, enlarged view of a second region of FIG. 2; [Diagram 5] FIG. 2 is an extracted and enlarged view of a first region of another embodiment of a decorative sheet according to the present invention. [Figure 6] FIG. 11 is an extracted and enlarged view of a first region of still another embodiment of a decorative sheet according to the present invention. [Figure 7] 1 is a cross-sectional view showing a schematic configuration of a main embodiment of a decorative material according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

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

[0018] [Decorative sheet / Main embodiment] A main embodiment of the decorative sheet according to the present invention will be described with reference to Figs.

[0019] <Overall structure of decorative sheet> As shown in Fig. 1, a pattern layer 12 having a pattern printed thereon to impart design is provided on the surface (upper surface in Fig. 1) of a base layer 11 made of a colored resin. A transparent resin layer 13 made of a transparent resin through which the pattern can be seen is provided on the surface (upper surface in Fig. 1) of the pattern layer 12. A surface protection layer 14 is provided on the surface (upper surface in Fig. 1) of the transparent resin layer 13 to protect the outermost surface and adjust the gloss.

[0020] A plurality of protrusions 10a, 10b, which are three-dimensional portions, are formed on the surface (upper surface in FIG. 1) of the transparent resin layer 13. The surface protection layer 14 is provided following the shapes of the protrusions 10a, 10b so as to fit the surface of the transparent resin layer 13. These protrusions 10a, 10b are provided in harmony with the pattern of the pattern layer 12 (for example, the surface portion and duct portion of the wood grain) in order to impart a three-dimensional design. Each layer 11 to 14 of the decorative sheet 10 according to this embodiment will now be described in more detail.

[0021] <Base material layer 11> A film in which a pigment such as titanium oxide is mixed into a thermoplastic resin is applied to the base material layer 11. The thermoplastic resin constituting the base material layer 11 is not particularly limited, and any thermoplastic resin that is used as a base material layer in a conventional decorative sheet can be applied.

[0022] Specifically, for example, polyolefin-based resins such as polyethylene, polypropylene, polymethylpentene, polybutene, ethylene-propylene copolymer, ethylene-α-olefin copolymer, and propylene-α-olefin copolymer; polyester-based resins such as polyethylene terephthalate, polybutylene terephthalate, polytetramethylene terephthalate, polyethylene naphthalate, polyethylene terephthalate-isophthalate copolymer, 1,4-cyclohexanedimethanol copolymerized polyethylene terephthalate, polyarylate, and polycarbonate; olefin-based copolymers 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); Examples of the resin include polyolefin resins such as copolymer resins, acrylic resins such as poly(meth)acrylonitrile, polymethyl(meth)acrylate, polyethyl(meth)acrylate, polybutyl(meth)acrylate, and polyacrylamide, polyamide resins such as 6-nylon, 6,6-nylon, and 6,10-nylon, styrene resins such as polystyrene, AS resin, and ABS resin, vinyl resins such as polyvinyl chloride, polyvinyl acetate, polyvinyl alcohol, polyvinyl acetal, and polyvinyl butyral, fluorine resins such as polyvinyl fluoride, polyvinylidene fluoride, polytetrafluoroethylene, ethylene-tetrafluoroethylene copolymer, and ethylene-perfluoroalkyl vinyl ether copolymer, and mixtures, copolymers, composites, and laminates of two or more of these resins.

[0023] In particular, in view of the recent increase in social interest in environmental issues, it is not preferable to use a thermoplastic resin containing chlorine (halogen), such as polyvinyl chloride resin, as the thermoplastic resin, and it is preferable to use a non-halogen thermoplastic resin. In particular, from the viewpoints of various physical properties, processability, versatility, economic efficiency, etc., it is preferable to use a polyester resin (amorphous or biaxially stretched) or a polyolefin resin as the non-halogen thermoplastic resin, and more preferably, a polyolefin resin. For example, it is preferable to use a polypropylene resin containing 30% by mass or more and 100% by mass or less of a highly crystalline homopolypropylene resin having an isotactic pentad fraction (mmmm fraction) of 95% or more as the polyolefin resin.

[0024] The base layer 11 may further contain various additives, as necessary, such as fillers, ultraviolet absorbers, light stabilizers, heat stabilizers, weather resistance agents, antioxidants, antistatic agents, lubricants, flame retardants, antibacterial agents, antifungal agents, antifriction agents, and light scattering agents.

[0025] The thickness of the base layer 11 is preferably 30 μm or more and 200 μm or less, and more preferably 50 μm or more and 100 μm or less. If it is 30 μm or more, it is possible to impart suitable strength when the decorative sheet 10 is used as a flooring material, and improve scratch resistance. On the other hand, if it is 200 μm or less, it is possible to suppress defects such as whitening and cracking during processing while achieving both thinness and strength of the decorative sheet 10, that is, to improve processability.

[0026] <Pattern layer 12> The pattern layer 12 is provided mainly for the purpose of imparting design, and is formed by printing a pattern with ink such as urethane resin by a printing method, etc. As the printing method, various printing methods such as gravure printing, offset printing, letterpress printing, flexographic printing, screen printing, inkjet printing, electrostatic printing, etc. can be applied.

[0027] Examples of inks that can be used include urethane-based resins, for example, vinyl chloride-vinyl acetate-based inks (cyan, magenta, yellow), and colorants such as organic or inorganic dyes or pigments, as well as inks in which various additives such as fillers, tackifiers, plasticizers, stabilizers, dispersants, defoamers, leveling agents, surfactants, and drying agents are dispersed in a binder made of synthetic resin or the like together with a solvent or diluent.

[0028] The type of pattern of the design layer 12 may be arbitrary depending on the purpose of use, the preferences of the user, etc., and common examples include wood grain patterns, stone patterns, and abstract patterns, but are not limited to these types.

[0029] <Transparent resin layer 13> The transparent resin layer 13 is made of a transparent resin material, for example, polyolefins such as polypropylene, polyethylene, polybutene, and various α-olefin copolymers (copolymers of propylene, 1-butene, 1-pentene, 1-hexene, 1-octene, etc.). Among them, polypropylene is preferable, and highly crystalline polypropylene resin is more preferable.

[0030] The transparent resin layer 13 may contain, as necessary, various additives such as, for example, ultraviolet absorbers, weather resistance agents such as light stabilizers, heat stabilizers, flame retardants, antiblocking agents, catalyst scavengers, and, within the scope that does not impair the characteristics of this embodiment, for example, colorants, light scattering agents, gloss adjusters, etc.

[0031] Examples of the heat stabilizer include phenol-based, sulfur-based, phosphorus-based, and hydrazine-based agents. Examples of the flame retardant include aluminum hydroxide and magnesium hydroxide. Examples of the ultraviolet absorber include benzotriazole-based, benzoate-based, benzophenone-based, and triazine-based agents. Examples of the light stabilizer include hindered amine-based agents. These various additives are used in appropriate combinations as needed.

[0032] The transparent resin layer 13 can be provided by laminating a sheet formed by film formation or an already formed sheet. The method for producing the transparent resin layer 13 is not particularly limited, but a general film formation method such as calendar film formation or extrusion film formation can be applied.

[0033] The transparent resin layer 13 has protrusions 10a, 10b, which are three-dimensional parts, on its surface in order to impart design properties, anti-slip properties, etc. The protrusions 10a, 10b, which are three-dimensional parts, can be provided, for example, by subjecting the transparent resin layer 13 to a thermal embossing process after extrusion molding, or by subjecting the transparent resin layer 13 to an embossing process in conjunction with extrusion molding using a cooling roll having an uneven surface formed thereon during extrusion molding.

[0034] For example, a transparent resin layer having protrusions 10a, 10b can be obtained by applying heat and pressure to a polypropylene sheet using an embossing plate having a concave surface to directly impart a convex shape to the sheet. Alternatively, a cooling roll having a concave surface can be used to form a polypropylene sheet in an extruder, and simultaneously apply pressure to the sheet while cooling the sheet to impart a convex shape to the sheet, thereby obtaining a transparent resin layer 13 having protrusions 10a, 10b. The protrusions 10a, 10b will be described in detail later.

[0035] Considering printability, cost, and the like, the transparent resin layer 13 preferably has a thickness in the range of 20 μm to 200 μm, and more preferably in the range of 70 μm to 100 μm.

[0036] <Surface protective layer 14> The surface protective layer 14 is provided for the purpose of imparting functions (surface properties) such as abrasion resistance, water resistance, weather resistance, scratch resistance, stain resistance, and design, and is formed, for example, by using a coating method, etc. The surface protective layer 14 has a degree of transparency (for example, colorless transparent, colored transparent, translucent, etc.) that allows various layers located on the back surface side to be seen through.

[0037] The surface protective layer 14 preferably contains at least one crosslinked resin selected from the group consisting of thermosetting resins, ultraviolet curing resins, and electron beam curing resins, since this can improve weather resistance, scratch resistance, and contamination resistance. These resins can be used alone or in combination. For example, the surface protective layer 14 can be made by mixing a plurality of the above resins, or by mixing one of the above resins with another resin other than the above resins.

[0038] To provide weather resistance, the surface protective layer 14 more preferably contains an ultraviolet absorbing agent such as a benzotriazole, benzoate, benzophenone, triazine, cyanoacrylate, etc. Also, the surface protective layer 14 preferably contains a hindered amine-based light radical scavenger (hindered amine-based light stabilizer) to capture harmful radicals and prevent deterioration of the resin itself due to light, heat, water, etc.

[0039] In particular, it is highly preferable that the surface protective layer 14 contains an antiviral agent that improves the antiviral properties. Examples of the antiviral agent include inorganic antibacterial agents such as antibacterial zeolite, antibacterial apatite, and antibacterial zirconia formed by incorporating metal ions such as silver ions, copper ions, and zinc ions into inorganic compounds such as zeolite, apatite, and zirconia, and organic antibacterial agents such as zinc pyrithione, 2-(4-thiazolyl)-benzimidazole, 10,10-oxybisphenoxaarsine, pyridine-2-thiol-oxide, and organic nitrogen-sulfur-halogen-based antibacterial agents. Among them, silver-based agents are preferable from the viewpoint of the antiviral effect. Note that inorganic antibacterial agents in which metal materials such as silver, copper, and zinc are supported on inorganic materials can also be used.

[0040] The surface protective layer 14 preferably contains the antiviral agent in a range of 0.2 parts by mass to 10 parts by mass. If the amount is less than 0.2 parts by mass, it is not preferable because it is too small and it is difficult to fully exhibit the antiviral performance. If the amount is more than 10 parts by mass, it is not preferable because there is a risk of deteriorating other physical properties required for the surface protective layer 14.

[0041] The antiviral agent preferably has an average particle size of 1 μm or more and 10 μm or less. If it is less than 1 μm, the contact area between the resin of the surface protective layer 14 and the antiviral agent is too small, making it difficult to fully exhibit the antiviral performance, which is not preferable. If it exceeds 10 μm, other physical properties required for the surface protective layer 14 may be deteriorated, which is not preferable.

[0042] Furthermore, the average particle size of the antiviral agent is preferably 0.5 to 2 times the thickness of surface protective layer 14. In other words, when the average particle size of the antiviral agent is φ and the thickness of the surface protective layer is D, the relationship is preferably 0.5D≦φ≦2D. When the average particle size of the antiviral agent is within the above range, the surface area of ​​the antiviral agent and the contact area of ​​the antiviral agent with surface protective layer 14 can be set in a well-balanced manner, and antiviral performance can be improved.

[0043] In addition, it is preferable that the antiviral agent has multiple particle size peaks. Specifically, it is preferable that the antiviral agent has a first peak in the range of 1 μm to 5 μm and a second peak in the range of 5 μm to 10 μm. Here, the second peak is a value larger than the first peak. When the antiviral agent has multiple particle size peaks, the filling density of the antiviral agent in the surface protective layer 14 can be increased, and the antiviral agent can be efficiently contained in the surface protective layer 14, thereby improving the antiviral performance.

[0044] The surface protection layer 14 can be provided by applying the above-mentioned resin by a known coating means, and is hardened and formed by irradiating with heat, ultraviolet light, or electron beams depending on the type of crosslinking. At this time, the surface protection layer 14 is provided along the shape of the convex parts 10a, 10b on the surface of the transparent resin layer 13, and the convex shape is also reflected in the surface of the surface protection layer 14.

[0045] The thickness of the surface protection layer 14 is not particularly limited, but if it is too thick or too thin, it will be ineffective, and if it is too thick, it will have reduced flexibility and be prone to cracking, so the thickness is preferably 2 μm or more and 20 μm or less, and more preferably 4 μm or more and 10 μm or less.

[0046] <Protruding portions 10a, 10b> As shown in FIG. 2, a first region (hereinafter referred to as "first region A") of the transparent resin layer 13 overlapping in plan view with a first pattern portion (e.g., a light-colored portion or a portion not printed with ink, such as a wood grain surface portion) of the pattern (e.g., a wood grain pattern) of the pattern layer 12 has a plurality of protrusions 10a arranged randomly. On the other hand, a second region (hereinafter referred to as "second region B") of the transparent resin layer 13 overlapping in plan view with a second pattern portion (e.g., a dark-colored portion or a portion printed with ink, such as a wood grain vessel portion) of the pattern (e.g., a wood grain pattern) of the pattern layer 12 has a plurality of protrusions 10b arranged regularly. In other words, the first region A has a plurality of protrusions 10a arranged randomly, and the second region B has a plurality of protrusions 10b arranged regularly.

[0047] The multiple protrusions 10a formed in the first region A each have a shape in plan view (hereinafter referred to as "planar shape") that is a polygon such as a square, for example, as shown in Fig. 3. These protrusions 10a are arranged randomly, i.e., irregularly. By randomly arranging the protrusions 10a in the first region A, it is possible to improve the anti-slip properties of socks, stockings, etc., intended for indoor use, and to reduce unpleasant interference sounds caused by rubbing, etc.

[0048] The protrusions 10a may be arranged without any regularity, for example, randomly in the first region A based on information calculated by random number calculation. 2 This means that the protrusions 10a are arranged so that the variation in the average distance between adjacent protrusions 10a formed in a single area (3σ: three times the standard deviation σ) exceeds 0.1 μm.

[0049] The height Ha of the protrusion 10a is preferably 20 μm or more and 80 μm or less, and more preferably less than 70 μm. If the height Ha is less than 20 μm, the anti-slip performance is inferior, which is not preferable. If the height Ha is 70 μm or more, it becomes difficult to obtain sufficient antiviral properties, which is not preferable. Furthermore, if the height Ha exceeds 80 μm, it becomes difficult to form a convex shape, which is not preferable. The height Ha of the protrusion 10a is the shortest distance (embossing depth) between the bottom and the top of the protrusion 10a of the transparent resin layer 13. This height Ha is also the height difference between adjacent concaves and convexes in the first region A of the surface of the transparent resin layer 13.

[0050] Moreover, the protrusion 10a has an outer diameter of less than 70 μm, and is preferably 25 μm or more and 60 μm or less. Specifically, the protrusion 10a has a side length La (outer diameter) in a plan view of less than 70 μm, and is preferably 25 μm or more and 60 μm or less. If the length La is 70 μm or more, it becomes difficult to obtain sufficient antiviral properties. If the length La is less than 25 μm, it is likely to cause a decrease in anti-slip properties, which is not preferable. If the length La exceeds 60 μm, it is likely to be visible to the naked eye, which may cause a decrease in the design, which is not preferable.

[0051] Moreover, the surface density of the protrusions 10a (the ratio of the protrusions to a unit area in a plan view) is preferably 0.05 or more and 0.5 or less. If the surface density is less than 0.05 or exceeds 0.5, the anti-slip properties tend to decrease, which is not preferable. When the planar shape of the protrusions 10a is a square, the surface density of the protrusions 10a is (La 2 ×n) / Lc 2 Here, Lc is the length of one side of an arbitrarily defined square in a plan view, and n is the number of protrusions 10a present inside this arbitrarily defined square.

[0052] The protrusion 10a is 1 mm 2The number of hits is 200 or less, preferably within the range of 70 to 160, more preferably within the range of 90 to 140, and even more preferably within the range of 110 to 120. 2 If the number of hits exceeds 200, it becomes difficult to obtain sufficient antiviral properties. 2 If the number of hits is less than 70, the anti-slip properties tend to decrease, which is undesirable. 2 If the number of hits exceeds 160, they become easily visible to the naked eye, which may lead to a decrease in the design, and is therefore undesirable.

[0053] On the other hand, the projections 10b each have a cross shape in plan view, as shown in Fig. 4. These projections 10b are arranged regularly at equal intervals in plan view, such as in a houndstooth pattern. In the second region B, the projections 10b are arranged regularly, so that a natural pattern (e.g., a vessel pattern) can be reproduced, i.e., the design can be improved, and the anti-slip properties can be improved.

[0054] The protrusions 10b may be arranged with a certain regularity, for example, in a staggered pattern in a plan view in the second region B. Here, the term "regularly arranged" means that the protrusions 10b are arranged with a certain regularity, for example, in a staggered pattern in a plan view in the second region B. 2 This means that the protrusions 10b are arranged so that the variation in the average distance between adjacent protrusions 10b formed in a single area (3σ: three times the standard deviation σ) is 0.1 μm or less.

[0055] The height Hb of the protrusions 10b is preferably 20 μm or more and 80 μm or less, and more preferably less than 70 μm, similar to the protrusions 10a. If the height Hb is less than 20 μm, the anti-slip performance is inferior, which is not preferable. If the height Hb is 70 μm or more, it is difficult to obtain sufficient antiviral properties, which is not preferable. If the height Hb exceeds 80 μm, it is difficult to form a convex shape, which is not preferable. The height Hb of the protrusions 10b is the shortest distance (emboss depth) between the bottom and the top of the protrusions 10b of the transparent resin layer 13, similar to the height Ha of the protrusions 10a. This height Hb is also the height difference between adjacent irregularities in the second region B of the surface of the transparent resin layer 13.

[0056] Similarly to the protrusion 10a, the protrusion 10b has an outer diameter of less than 70 μm, and is preferably 25 μm or more and 60 μm or less. Specifically, the protrusion 10b has a side length Lb (outer diameter) in plan view of less than 70 μm, and is preferably 25 μm or more and 60 μm or less. If the length Lb is 70 μm or more, it becomes difficult to obtain sufficient antiviral properties. If the length Lb is less than 25 μm, it is likely to cause a decrease in anti-slip properties, which is not preferable. If the length Lb exceeds 60 μm, it is likely to be visible to the naked eye, which may cause a decrease in the design, which is not preferable.

[0057] Similarly to the protrusions 5a, the protrusions 10b preferably have an areal density (the ratio of the protrusions to a unit area in a plan view) of 0.05 or more and 0.5 or less. If the areal density is less than 0.05 or exceeds 0.5, the anti-slip properties tend to decrease, which is not preferable. When the planar shape of the protrusions 10b is a square, the areal density of the protrusions 10b is (Lb 2 ×n) / Lc 2 Here, Lc is the length of one side of an arbitrarily defined square in a plan view, and n is the number of protrusions 10b present inside this arbitrarily defined square.

[0058] Similarly, the protrusion 10b is 1 mm 2The number of hits is 200 or less, preferably within the range of 70 to 160, more preferably within the range of 90 to 140, and even more preferably within the range of 110 to 120. 2 If the number of hits exceeds 200, it becomes difficult to obtain sufficient antiviral properties. 2 If the number of hits is less than 70, the anti-slip properties tend to decrease, which is undesirable. 2 If the number of hits exceeds 160, they become easily visible to the naked eye, which may lead to a decrease in the design, and is therefore undesirable.

[0059] The area ratio of the convex portions 10b regularly arranged in a cross shape in a plan view in the second region B to the convex portions 10a, 10b formed on the transparent resin layer 13 is 10% to 50% (preferably 30% or less, and optimally 15%). Within this numerical range, it is possible to achieve both excellent design and anti-slip properties (see [Example] for details).

[0060] <Method of manufacturing the decorative sheet 10> A method for producing the decorative sheet 10 according to this embodiment as described above will now be described. One or both sides of the base layer 11 made of a polyolefin resin film containing a pigment or the like are subjected to activation treatment such as corona treatment, plasma treatment, electron beam treatment, ultraviolet treatment, dichromate treatment, etc. as necessary, and then ink is printed on the base layer 11 (surface) by gravure printing, offset printing, screen printing, flexographic printing, electrostatic printing, inkjet printing, etc. to provide the design layer 12.

[0061] Then, a resin material such as polypropylene resin is extruded from an extruder onto the pattern layer 12 while pressing an embossing plate having a concave shape on its surface, thereby providing a transparent resin layer 13 having convex portions 10a, 10b on its surface. Subsequently, an activation treatment such as a corona treatment is performed on the transparent resin layer 13, and then a thermosetting resin, an ultraviolet curing resin, an electron beam curing resin, or the like is applied onto the transparent resin layer 13 and cured to form the surface protective layer 14. In this manner, the decorative sheet 10 can be obtained.

[0062] <effect> In the decorative sheet 10 thus manufactured, the convex portions 10a in the first region A are randomly arranged in a square shape, while the convex portions 10b in the second region B are regularly arranged in a cross shape. Furthermore, the area ratio of the convex portions 10b regularly arranged in a cross shape in the second region B to the convex portions 10a, 10b formed on the transparent resin layer 13 is 10% or more and 50% or less. In addition, the convex portions 10a, 10b have an outer diameter of less than 70 μm and a width of less than 1 mm. 2 The number of particles is 200 or less per unit area. Therefore, excellent design, anti-slip properties and anti-viral properties can be exhibited, and when the area ratio is 30% or less, even more excellent design and anti-slip properties can be exhibited. In addition, it is possible to reliably exhibit the stain resistance required for a floor.

[0063] Furthermore, by providing the surface protective layer 14 containing an antiviral agent, antiviral properties can be reliably exhibited.

[0064] Furthermore, by the surface protective layer 14 containing the antiviral agent in an amount of 0.2 parts by mass or more and 10 parts by mass or less, the antiviral properties can be more reliably exhibited.

[0065] In addition, by setting the outer diameter Lb of the randomly arranged square projections 10a in the first region A to 25 μm or more and 60 μm or less, it is possible to achieve more excellent design, anti-slip properties, and anti-viral properties. In addition, it is possible to easily and reliably achieve the contamination resistance required for a floor.

[0066] In the first region A, the convex portions 10a randomly arranged in a square shape are 1 mm 2 By forming the number of particles per unit area within the range of 70 to 160, it is possible to achieve more excellent design, anti-slip properties, and anti-viral properties. In addition, it is possible to easily and reliably achieve the stain resistance required for a floor.

[0067] In addition, the randomly arranged square convex portions 10a in the first region A are formed based on information calculated by random number calculation, so that it is possible to more reliably realize more excellent design, anti-slip properties, and anti-viral properties. In addition, it is possible to more reliably realize the contamination resistance required for a floor.

[0068] Furthermore, by containing at least one of a thermosetting resin, an ultraviolet-curable resin, and an electron beam-curable resin, the surface protective layer 14 can reliably exhibit the hardness required for a floor.

[0069] [Decorative sheet / other embodiments] In the above embodiment, the planar shape of the protrusion 10a has been described as a square. However, the present invention is not limited to the protrusion 10a having a square planar shape. The planar shape of the protrusion formed in the first region A may be, for example, a polygon other than a rectangle or a square (e.g., a triangle, a pentagon, a hexagon, etc.).

[0070] For example, as shown in FIG. 5, the convex portion 20a may have an equilateral triangular planar shape. The convex portion 20a has an outer diameter of less than 70 μm, and is preferably 25 μm or more and 60 μm or less. Specifically, the length La (outer diameter) of one side of the convex portion 20a in plan view is less than 70 μm, and is preferably 25 μm or more and 60 μm or less. If the length La is 70 μm or more, it becomes difficult to obtain sufficient antiviral properties. If the length La is less than 25 μm, it is undesirable because it easily causes a decrease in anti-slip properties. If the length La exceeds 60 μm, it is undesirable because it is easily visible to the naked eye and there is a risk of causing a decrease in the design sense.

[0071] The surface density of the protrusions 20a is preferably 0.05 or more and 0.5 or less. If the surface density is less than 0.05 or exceeds 0.5, the anti-slip properties tend to decrease, which is not preferable. Since the planar shape of the protrusions 30a is an equilateral triangle, the surface density of the protrusions 20a is {(√3 / 4)×La 2 ×n} / Lc 2 Here, Lc is the length of one side of an arbitrarily defined square in a plan view, and n is the number of protrusions 20a present inside this arbitrarily defined square.

[0072] The height Ha of the protrusion 20a is preferably 20 μm or more and 80 μm or less, and more preferably less than 70 μm. If the height Ha is less than 20 μm, the anti-slip performance is inferior, which is not preferable. If the height Ha is 70 μm or more, it becomes difficult to obtain sufficient antiviral properties, which is not preferable. Furthermore, if the height Ha exceeds 80 μm, it becomes difficult to form a protruding shape, which is not preferable.

[0073] Furthermore, the convex portion may have a circular planar shape (perfect circle, ellipse, etc.). For example, as shown in FIG. 6, it is possible to form the protrusion 30a having a circular planar shape. The protrusion 30a has an outer diameter of less than 70 μm, and preferably 25 μm to 60 μm. More specifically, the protrusion 30a has a diameter La (outer diameter) of 25 μm to 60 μm. If the length La is 70 μm or more, it becomes difficult to obtain sufficient antiviral properties. If the length La is less than 25 μm, it is likely to cause a decrease in anti-slip properties, which is not preferable. If the length La exceeds 60 μm, it is likely to be visible to the naked eye, which may cause a decrease in the design, which is not preferable.

[0074] The surface density of the protrusions 30a is preferably 0.05 or more and 0.5 or less. If the surface density is less than 0.05 or more than 0.5, the anti-slip properties tend to decrease, which is not preferable. Since the planar shape of the protrusions 30a is a perfect circle, the surface density of the protrusions 30a is expressed by {(π / 4)×La 2 ×n} / Lc 2 Here, Lc is the length of one side of an arbitrarily defined square in a plan view, and n is the number of protrusions 30a present inside this arbitrarily defined square.

[0075] The height Ha of the protrusion 30a is preferably 20 μm or more and 80 μm or less, and more preferably less than 70 μm. If the height Ha is less than 20 μm, the anti-slip performance is deteriorated, which is not preferable. If the height Ha is 70 μm or more, it becomes difficult to obtain sufficient antiviral properties, which is not preferable. Furthermore, if the height Ha exceeds 80 μm, it becomes difficult to form a protruding shape, which is not preferable.

[0076] In the above-described embodiment, the shape in cross section (hereinafter referred to as "cross-sectional shape") is rectangular, that is, the case of a convex portion having a columnar shape with a constant width over the entire length between the base and the top has been described. However, the present invention is not limited to convex portions having a rectangular cross-sectional shape. The convex portion may also have a columnar cross-sectional shape with a width that gradually decreases from the base to the top, such as a trapezoid or a cone.

[0077] In the above-described embodiment, the protruding convex portion is described. However, the present invention is not limited to the protruding convex portion. Instead of the protruding convex portion, for example, a recessed portion may be used.

[0078] Specifically, for example, it is possible to randomly arrange both circular or polygonal concave portions and convex portions in the first region A, and regularly arrange both cross-shaped concave portions and convex portions in the second region B. It is also possible to randomly arrange circular or polygonal convex portions in the first region A, and regularly arrange cross-shaped concave portions in the second region B. It is also possible to randomly arrange circular or polygonal concave portions in the first region A, and regularly arrange cross-shaped convex portions in the second region B. In other words, it is possible to have a three-dimensional portion consisting of at least one of convex portions and concave portions.

[0079] [Cosmetic material / Main embodiment] A main embodiment of the decorative material according to the present invention will be described with reference to Fig. 7. However, for parts similar to those in the above-mentioned embodiment, the same reference numerals as those used in the description of the above-mentioned embodiment will be used, and descriptions that overlap with those in the above-mentioned embodiment will be omitted.

[0080] <Overall composition of decorative material> 7, the decorative material 100 has a decorative sheet 10 and a substrate 101 with the decorative sheet 10 attached to the surface. In the decorative material 100, the base layer 11 of the decorative sheet 10 is attached to the substrate 101 via an adhesive layer 102. In other words, the decorative material 100 according to this embodiment is obtained by attaching the decorative sheet 10 according to the previous embodiment to the substrate 101.

[0081] <Substrate 101> The substrate 101 is made of a hard material such as a wood substrate such as wood plywood, a composite substrate made of a mixture of wood powder and plastic, or a resin substrate such as polyolefins such as polyethylene (PE) and polypropylene (PP) or polyvinyl chloride (PVC). Examples of wood substrates that can be used include tropical plywood, particle board, medium density fiberboard (MDF), and ordinary plywood as specified by the Japanese Agricultural Standards. Substrates made of olefin resins containing wood powder can also be used. Metals such as aluminum, resins such as plastics, or composite materials thereof can also be used. The substrate 101 is preferably about 3 to 25 mm thick. By providing the substrate 101, a decorative material 100 that can suppress the occurrence of scratches can be provided.

[0082] <Adhesive layer 102> The adhesive layer 102 is provided on the surface of the substrate 101 in order to attach the decorative sheet 10 to the substrate 101. When the substrate 101 is made of, for example, a wood-based material, the adhesive layer 102 is generally made of a vinyl acetate emulsion-based material, a two-component curing urethane-based material, or the like.

[0083] <effect> In the decorative material 100 according to this embodiment, the same effects as those in the decorative sheet 10 according to the previously described embodiment can be obtained.

[0084] [Decorative materials / other embodiments] In the above-described embodiment, the decorative material 100 is described in which the substrate 101 is attached to the base layer 11 of the decorative sheet 10 via the adhesive layer 102, but the present invention is not limited to this. As another embodiment, for example, a decorative material can be provided in which a base layer is provided on the base layer 11 of the decorative sheet 10, and the substrate 101 is attached to the base layer via the adhesive layer 102.

[0085] In the above embodiment, the decorative material 100 is formed by laminating the substrate 101 and the decorative sheet 10, but the present invention is not limited to this. As another embodiment, for example, it is of course possible to form a decorative material by laminating the substrate 101 and the decorative sheet of the other embodiment described above. EXAMPLES

[0086] Examples of the decorative sheet and decorative material according to the present invention will be specifically described below, but the present invention is not limited to only the following examples that are specifically described.

[0087] [Preparation of test specimens and comparison specimens] Test specimen 1 A pigment-containing random polypropylene film (thickness 60 μm) manufactured by RIKEN TECHNOS CORPORATION was prepared as a substrate layer. A wood grain pattern was printed on the surface of this substrate layer by gravure printing using urethane ink "LAMISTAR (registered trademark)" manufactured by Toyo Ink Co., Ltd. to provide a pattern layer. Next, a homopolypropylene resin manufactured by Prime Polymer Co., Ltd. was extruded from an extruder on the surface of the pattern layer to form a transparent resin layer (thickness 90 μm), and at the same time, an embossing plate having a concave shape was pressed on the surface of this transparent resin layer to form a convex portion (height 50 μm).

[0088] Here, the embossing plate has the above-mentioned convex portions randomly arranged (1 mm apart) in a square shape (length of one side (outer diameter) 60 μm) in a first region A (area ratio 85%) of the transparent resin layer which overlaps in a plan view with the wood grain surface portion which becomes the first pattern portion of the pattern of the pattern layer. 2 On the other hand, in the second region B (area ratio 15%) of the transparent resin layer which overlaps in plan view with the grain vessel portion which becomes the second pattern portion of the pattern layer, the above-mentioned convex portions are regularly arranged (1 mm apart) in a cross shape (length (outer diameter) 60 μm). 2 The recesses are formed so that the number of recesses is 100 per unit.

[0089] Then, a UV-curable urethane acrylate resin manufactured by DIC Graphics Inc., mixed with a silver-based inorganic antiviral agent "Biocide (registered trademark) TB-B100 (product number)" manufactured by Taisho Technos Co., Ltd. (0.2 parts by mass), was applied to the surface of the transparent resin layer, and cured by irradiating with UV rays from a metal halide lamp to provide a surface protective layer (thickness 10 μm). In this way, the decorative sheet of specimen 1 was obtained.

[0090] Next, a medium density fiberboard (MDF) made of hardwood was prepared as a substrate (thickness 3 mm), and 100 g / m of a two-part mixed curing water-based emulsion adhesive "Rikabond (registered trademark)" (weight ratio BA-10L:BA-11B = 100:2.5) manufactured by Japan Coating Resins Co., Ltd. was applied in a wet state to the surface. 2 The adhesive layer was provided by applying the coating so that the adhesive layer was such that the substrate layer of the decorative sheet was attached to the adhesive layer and cured (for 24 hours), thereby producing specimen 1 of the decorative material.

[0091] Test specimen 2 Specimen 2 of the decorative material was produced in the same manner as specimen 1, except that a pattern layer was printed so that the area ratio of the first region A was 90%, and that the area ratio of the second region B was 10%, and square-shaped convex portions and cross-shaped convex portions were formed in the transparent resin layer.

[0092] Test specimen 3 Decorative specimen 3 was produced in the same manner as specimen 1, except that a pattern layer was printed so that the area ratio of the first region A was 70%, and that the area ratio of the second region B was 30%, and square-shaped convex portions and cross-shaped convex portions were formed in the transparent resin layer.

[0093] Test specimen 4 Decorative specimen 4 was produced in the same manner as specimen 1, except that a pattern layer was printed so that the area ratio of the first region A was 50%, and that the area ratio of the second region B was 50%, and square-shaped convex portions and cross-shaped convex portions were formed in the transparent resin layer.

[0094] Test specimen 5 Decorative material specimen 5 was produced in the same manner as specimen 1, except that the length of one side (outer diameter) of the square-shaped protrusion and the length (outer diameter) of the cross-shaped protrusion were set to 25 μm.

[0095] Test specimen 6 Square and cross-shaped convex parts are 1mm apart. 2A decorative material specimen 6 was prepared in the same manner as specimen 1, except that 70 pieces were used per specimen.

[0096] Test specimen 7 Square and cross-shaped convex parts are 1mm apart. 2 A decorative material specimen 7 was prepared in the same manner as specimen 1, except that 160 pieces were used per specimen.

[0097] Test specimen 8 Square and cross-shaped convex parts are 1mm apart. 2 A decorative material specimen 8 was prepared in the same manner as specimen 1, except that 200 pieces were used per specimen.

[0098] Test specimen 9 Cosmetic material specimen 9 was prepared in the same manner as specimen 1, except that the amount of the antiviral agent contained in the surface protective layer was 10 parts by mass.

[0099] Comparison body 1 A pattern layer was printed so that the area ratio of the first region A was 100%, i.e., the area ratio of the second region B was 0%, and comparison specimen 1 of the decorative material was produced in the same manner as test specimen 1, except that the cross-shaped convex portion was omitted and only square-shaped convex portions were formed on the transparent resin layer.

[0100] Comparison body 2 A pattern layer was printed so that the area ratio of the first region A was 0%, i.e., the area ratio of the second region B was 100%, and comparison specimen 2 of the decorative material was produced in the same manner as specimen 1, except that the square-shaped convex portions were omitted and only cross-shaped convex portions were formed on the transparent resin layer.

[0101] Comparison 3 Comparative decorative material sample 3 was produced in the same manner as test sample 1, except that the length of one side (outer diameter) of the square-shaped protrusion and the length (outer diameter) of the cross-shaped protrusion were both set to 70 μm.

[0102] Comparison 4 Square and cross-shaped convex parts are 1mm apart. 2A comparative decorative material sample 4 was prepared in the same manner as test sample 1, except that 220 pieces were used per sample.

[0103] Comparison body 5 Square and cross-shaped convex parts are 1mm apart. 2 A comparative decorative material sample 5 was produced in the same manner as test sample 1, except that 220 pieces per sample were used and the height (embossing depth) was 70 μm.

[0104] The conditions for these test specimens 1 to 9 and comparative specimens 1 to 5 are shown in Table 1 below.

[0105] [Table 1]

[0106] [Test Contents] <Design> Test specimens 1-9 and comparative specimens 1-5 were visually inspected by 16 examiners, and the number of people who judged the appearance (design) to be good was tallied. The results are shown in Table 2 below. In Table 2, if 0-3 people judged the appearance to be good, it is indicated with an "X", if 4-8 people judged the appearance to be good, it is indicated with a "△", and if 9-16 people judged the appearance to be good, it is indicated with an "O".

[0107] <Slip resistance> The slip resistance test was conducted for the test specimens 1 to 9 and the comparative specimens 1 to 5 in accordance with the Japanese Industrial Standards (JIS) "A1454" to determine the coefficient of slip resistance (CSR). The coefficient of slip resistance for pets (CSRD) was also determined. The coefficient of slip resistance for pets (CSRD) was measured when a load (5 kg) was applied to a sliding piece made of urethane foam wrapped in linen, which resembled a dog's paw. The results are shown in Table 2 below. In Table 2, CSR of 0.36 or more is indicated by "○", CSR of 0.34 or more but less than 0.36 is indicated by "△", and CSR of less than 0.34 is indicated by "×".

[0108] <Feel on the feet> Sixteen testers touched test specimens 1 to 9 and comparative specimens 1 to 5 with bare feet, and the number of people who judged the feel (slipperiness) to be adequate was tallied. The results are shown in Table 2 below. In Table 2, if 0 to 3 people judged the feel to be adequate, this is indicated with an "X", if 4 to 8 people judged the feel to be adequate, this is indicated with a "△", and if 9 to 16 people judged the feel to be comfortable, this is indicated with an "O".

[0109] <Stain resistance> A stain resistance test was conducted on test specimens 1 to 9 and comparative specimens 1 to 5 in accordance with the "Stain A Test" of the Japanese Agricultural Standards (JAS). The results are shown in Table 2 below. In Table 2, when the residual coloring could be confirmed with the naked eye, it is indicated with "X", when it was difficult to confirm the residual coloring with the naked eye but it could be confirmed with a magnifying glass, it is indicated with "△", and when the residual coloring could not be confirmed even with a magnifying glass, it is indicated with "○".

[0110] <Antibacterial> Antibacterial tests were conducted on the test specimens 1 to 9 and the comparative specimens 1 to 5 in accordance with the Japanese Industrial Standards (JIS) "Z2801". The results are shown in Table 2 below. In Table 2, activity values ​​of 2 or more are indicated with "○", and activity values ​​of less than 2 are indicated with "×".

[0111] <Antiviral> Antiviral tests were conducted on the test specimens 1 to 9 and the comparative specimens 1 to 5 in accordance with the International Organization for Standardization (ISO) "21702". The results are shown in Table 2 below. In Table 2, activity values ​​of 2 or more are indicated with "○", and activity values ​​of less than 2 are indicated with "×".

[0112] [Test Results] The test results for test specimens 1 to 9 and comparative specimens 1 to 5 are shown in Table 2 below.

[0113] [Table 2]

[0114] As can be seen from Table 2, comparative body 1 (no cross shape) was NG in terms of design, and comparative body 2 (only cross shape) was NG in terms of design as well as anti-slip properties and foot feel. In addition, comparative bodies 3 to 5 (differences in the size and number of protrusions) were NG in terms of antiviral properties.

[0115] In contrast, in the test specimens 1 to 9, the design, anti-slip properties, foot feel, stain resistance, antibacterial properties, and antiviral properties were all OK. In particular, in the test specimens 1 to 3 and 5 to 9, the design, anti-slip properties, foot feel, stain resistance, antibacterial properties, and antiviral properties were all excellent. Therefore, it was confirmed that the present invention can exhibit excellent anti-slip properties, design, and antiviral properties. [Industrial Applicability]

[0116] The decorative sheet and decorative material according to the present invention can exhibit excellent design properties, anti-slip properties, and antiviral properties, and can therefore be used extremely beneficially in various industries, including the construction industry. [Explanation of symbols]

[0117] 10 Decorative Sheet 10a, 10b Convex portion 11 Base material layer 12 Picture layer 13 Transparent resin layer 14 Surface protective layer 100 Cosmetic materials 101 Substrate 102 Adhesive layer A First area B Second area

Claims

1. A base layer; A pattern layer provided on the base layer; A transparent resin layer provided on the pattern layer; Equipped with A decorative sheet in which a three-dimensional portion consisting of at least one of a convex portion and a concave portion is formed in the transparent resin layer, The three-dimensional portion formed in the transparent resin layer is The outer diameter is less than 70 μm and less than 1 mm ２ Formed with 200 or less pieces per the first pattern portions are arranged randomly in a circular or polygonal shape in a first region overlapping a first pattern portion of the pattern of the pattern layer in a planar view, and the second pattern portions are arranged regularly in a cross shape in a second region overlapping a second pattern portion of the pattern different from the first pattern portion of the pattern layer in a planar view; Furthermore, the area ratio of the three-dimensional portions regularly arranged in a cross shape in a plan view in the second region to the three-dimensional portions formed in the transparent resin layer is 10% or more and 50% or less. A decorative sheet characterized by:

2. A surface protective layer containing an antiviral agent is provided on the transparent resin layer.

2. The decorative sheet according to claim 1.

3. The surface protective layer contains the antiviral agent in an amount of 0.2 parts by mass or more and 10 parts by mass or less.

3. The decorative sheet according to claim 2.

4. The area ratio is 30% or less.

2. The decorative sheet according to claim 1.

5. The three-dimensional portions randomly arranged in a circular or polygonal shape in a plan view in the first region have an outer diameter of 25 μm or more and 60 μm or less.

2. The decorative sheet according to claim 1.

6. The three-dimensional portions randomly arranged in a circular or polygonal shape in a plan view in the first region are each 1 mm ２ Formed within the range of 70 to 160 per unit 2. The decorative sheet according to claim 1.

7. The three-dimensional portions randomly arranged in a circular or polygonal shape in a plan view in the first region are formed based on information calculated by random number calculation.

2. The decorative sheet according to claim 1.

8. a surface protective layer is provided on the transparent resin layer, The surface protective layer contains at least one of a thermosetting resin, an ultraviolet-curable resin, and an electron beam-curable resin.

2. The decorative sheet according to claim 1.

9. A decorative sheet according to any one of claims 1 to 8, A substrate having the decorative sheet attached to its surface. A cosmetic material comprising:

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