Decorative sheet and decorative member

Abstract

To provide a decorative sheet and a decorative member having a texture closer to a real thing and excellent design properties.SOLUTION: Disclosed is a decorative sheet (1) comprising a colored thermoplastic resin layer (2) containing a polyolefin resin, a pattern layer (5) laminated on one surface of the colored thermoplastic resin layer (2) in order, a transparent thermoplastic resin layer (6) containing a polyethylene resin and a surface protective layer (7), and a decorative sheet (2) which is disposed on the other surface of the colored thermoplastic resin layer (2) in synchronization with the pattern of the pattern layer (5), has higher light absorptivity than light of other wavelengths with respect to infrared rays, and has the following features: And an embossed portion 7a of the surface-protecting layer 7, the embossed portion 2000nm being formed at a position overlapping the region containing the predetermined material in plan view, wherein the light-absorbing portion 3, which is the region containing the predetermined material, has an infrared transmissivity of 60% or less at a wave length LA.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] Conventionally, decorative members in which a decorative sheet is bonded to a wooden substrate such as plywood, MDF (medium density fiberboard), or particle board, a resin substrate, an inorganic non-combustible substrate, or a metal substrate have been widely used (see, for example, Patent Document 1). Furthermore, the design of the decorative sheet is often imitated to resemble the surface of wood, stone, or the like. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5045180 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, decorative sheets tend to have a flat surface texture compared to real wood or stone. Actual wood and stone have different textures due to differences in the surface material and structure, resulting in unevenness in different locations. Areas with different textures often also have different colors, but this is not expressed in decorative sheets, and in terms of design, more expensive real ones are far superior. The present invention has been made in view of the above-mentioned points, and has as its object to provide a decorative sheet and decorative member that have a texture closer to the real thing and have excellent design properties. [Means for solving the problem]

[0005] According to one aspect of the present invention, a decorative sheet is provided comprising a colored resin layer containing a polyolefin resin, a pattern layer, a transparent resin layer containing a polyethylene resin, and a surface protective layer laminated in that order on one side of the colored resin layer, a region on the other side of the colored resin layer arranged in sync with the pattern of the pattern layer, the region containing a predetermined material that is more light-absorbent for infrared rays than light of other wavelengths and more light-absorbent for infrared rays than the colored resin layer, and an embossed portion formed in the surface protective layer at a position that overlaps with the region containing the predetermined material in a planar view, wherein the region containing the predetermined material has an infrared transmittance of 60% or less at a wavelength of 2000 nm.

[0006] In addition, according to another aspect of the present invention, there is provided a decorative sheet comprising a colored resin layer containing a polyolefin resin, a pattern layer laminated in this order on one side of the colored resin layer, a transparent resin layer containing a polyethylene resin, and a surface protective layer, wherein the pattern layer has an area containing a predetermined material, and the area containing the predetermined material is more light-absorbent for infrared rays than light of other wavelengths and is more light-absorbent for infrared rays than the pattern layer, and has an infrared transmittance at a wavelength of 2000 nm of 60% or less, and the surface protective layer has an embossed portion at a position that overlaps the area containing the predetermined material in a planar view.

[0007] Furthermore, according to another aspect of the present invention, there is provided a decorative member comprising a substrate and a decorative sheet of the above-described aspect provided on at least one side of the substrate, wherein the substrate is any one of a wood substrate, a resin substrate, a non-flammable substrate, and a metal substrate. [Effects of the Invention]

[0008] According to one embodiment of the present invention, decorative sheets and decorative members that have a texture closer to the real thing and have excellent design properties can be easily obtained. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a cross-sectional view schematically illustrating an example of a decorative sheet according to a first embodiment of the present invention. [Figure 2]1A to 1C are process diagrams schematically illustrating an example of a procedure for producing a decorative sheet according to a first embodiment of the present invention. [Figure 3] FIG. 3 is a cross-sectional view schematically illustrating an example of a decorative member according to a modified example of the first embodiment of the present invention. [Figure 4] FIG. 2 is a cross-sectional view schematically showing an example of a decorative sheet according to a second embodiment of the present invention. [Figure 5] FIG. 10 is a cross-sectional view schematically showing an example of a decorative sheet according to a modified example of the second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the present technology will be described with reference to the drawings. In the present embodiment, a decorative sheet and a decorative material for floors or building materials will be described as an example, but the present technology may also be used for decorative sheets for other parts.

[0011] Here, the drawings are schematic, and the relationship between thickness and planar dimensions, the thickness ratio of each layer, etc. differ from the actual ones. Furthermore, the embodiments shown below are merely examples of configurations for embodying the technical idea of ​​the present invention, and the technical idea of ​​the present invention is not limited to the materials, shapes, structures, etc. of the components described below. The technical idea of ​​the present invention can be modified in various ways within the technical scope defined by the claims. Hereinafter, embodiments of the present technology will be described with reference to the drawings.

[0012] First Embodiment First, a first embodiment of the present invention will be described. A decorative sheet according to one embodiment of the present invention comprises a colored resin layer containing a polyolefin resin, a pattern layer, a transparent resin layer containing a polyethylene resin, and a surface protective layer laminated in that order on one side of the colored resin layer, an area on the other side of the colored resin layer in sync with the pattern of the pattern layer, the area containing a predetermined material that is more light-absorbent for infrared rays than light of other wavelengths and is more light-absorbent for infrared rays than the colored resin layer, and an embossed portion formed in the surface protective layer at a position that overlaps with the area containing the predetermined material in a planar view, and the area containing the predetermined material has an infrared transmittance of 60% or less at a wavelength of 2000 nm.

[0013] In addition, a decorative member according to one embodiment of the present invention comprises a base material and a decorative sheet of the above-described aspect provided on at least one side of the base material, wherein the base material is a decorative member that is any one of a wood base material, a resin base material, a non-flammable base material, or a metal base material.

[0014] [Configuration of decorative sheet] 1, a decorative sheet 1 according to one embodiment of the present invention is formed by laminating, in this order, a colored thermoplastic resin layer (colored resin layer) 2, a design layer 5, a transparent thermoplastic resin layer (transparent resin layer) 6, and a surface protective layer 7, with an embossed portion 7a formed in the surface protective layer 7. Furthermore, on the surface of the colored thermoplastic resin layer 2 opposite the design layer 5, a pattern layer 8a made of light-absorbing portions 3 for realizing a gloss matte finish, and a primer layer 8 are formed. As will be described in more detail below, the light-absorbing portions 3 are regions containing a predetermined material that is light-absorbing to light of a predetermined wavelength (specifically, infrared light).

[0015] [Colored thermoplastic resin layer] The colored thermoplastic resin layer 2 is formed using a polyolefin resin as the thermoplastic resin. Examples of polyolefin resins that can be used include polyethylene, polypropylene, polymethylpentene, polybutene, ethylene-propylene copolymer, ethylene-α-olefin copolymer, and propylene-α-olefin copolymer, as well as olefin copolymer resins such as ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, ethylene-(meth)acrylic acid (ester) copolymer, and ethylene-unsaturated carboxylic acid copolymer metal neutralized product (ionomer). These polyolefin resins and olefin copolymer resins can be used alone or as a mixture, copolymer, composite, laminate, or the like of two or more resins.

[0016] Furthermore, the polyolefin resin can be appropriately selected from the types described above depending on the intended use of the decorative sheet 1. In particular, polyethylene resins, i.e., homopolymers or copolymers containing ethylene as the main component, are most suitable for general applications. Copolymers containing olefin monomers other than ethylene may also be used, such as propylene-α-olefin copolymers that have polypropylene crystalline portions and contain 15 mol% or more of one or more comonomers of α-olefins having 2 to 20 carbon atoms other than ethylene, preferably propylene, butene-1, 4-methylpentene-1, hexene-1, or octene-1. Furthermore, modifiers such as low-density polyethylene, ethylene-α-olefin copolymers, ethylene-propylene copolymer rubber, ethylene-propylene-non-conjugated diene copolymer rubber, styrene-butadiene copolymers, or hydrogenated products, which are typically used to soften polypropylene resins, can be added as appropriate.

[0017] [Picture layer] The design layer 5 is a printed layer on which a design pattern is printed to impart design to the decorative sheet 1. Known printing methods can be used to form the design layer 5. The printing method is not particularly limited, but gravure printing is preferred considering productivity and design quality. For example, if the colored thermoplastic resin layer 2 is available in a rolled state, printing to form the design layer 5 can be performed using a roll-to-roll printing device. Other printing methods include offset printing, screen printing, flexographic printing, electrostatic printing, inkjet printing, and transfer printing from a transfer sheet. When using such printing methods, the design pattern of the design layer 5 can be formed by multicolor printing using the usual process colors of yellow, red, blue, and black, or by multicolor printing using special colors, in which plates of the individual colors that make up the design pattern are prepared.

[0018] Furthermore, the pattern of the pattern layer 5 may be any pattern, taking into consideration the design of the flooring or fittings. For example, a marble grain pattern can be used to evoke the image of a stone floor such as marble. For example, various wood grains or cork can be used as the pattern for a wood-based design. In addition to patterns of natural materials, artificial patterns based on these motifs or geometric patterns can also be used. Other examples of patterns include wood grain patterns composed of spring wood and autumn wood regions and vessels in the cross section of tree rings, leather (grain) patterns, stone grain patterns on the surface of stone materials such as marble, granite, and sandstone, sand grain patterns, tile patterns, brickwork patterns, fabric patterns, geometric shapes, letters, symbols, abstract patterns, floral patterns, landscapes, characters, and the like.

[0019] Printing ink is a mixture of a solvent and solid components such as a colorant and a binder resin. Examples of solvents 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-methoxyethyl acetate; alcohol-based organic solvents such as methyl alcohol, ethyl alcohol, normal 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. The solvents may be used alone or in combination of two or more.

[0020] Examples of binder resins include chlorine-based resins, urethane resins, acrylic urethane resins, acrylic resins, polyester resins, polyamide resins, butyral resins, polystyrene resins, nitrocellulose resins (nitrocellulose), and cellulose acetate resins. Examples of chlorine-based resins include polyvinyl chloride resins such as polyvinyl chloride, chlorinated polyethylene, polyvinylidene chloride, ethylene-vinyl chloride copolymers, vinyl chloride-vinyl acetate copolymers, and vinyl chloride-vinyl acetate-(meth)acrylic copolymers, as well as polypropylene chloride and chlorinated polypropylene. Here, (meth)acrylic means acrylic or methacrylic. The binder resin may be a single type or a combination of two or more types.

[0021] Examples of colorants include inorganic pigments such as carbon black, iron black, titanium white (titanium oxide), antimony white, yellow lead, titanium yellow, red iron oxide, cadmium red, ultramarine blue, and cobalt blue; and organic pigments such as quinacridone red, isoindolinone yellow, and phthalocyanine blue. The colorants may be used alone or in combination of two or more. Here, the solvent contained in the printing ink will eventually volatilize, so the design layer 5 is formed mainly from solid components such as colorants and binder resins.

[0022] The printing ink may also contain other components such as stabilizers, plasticizers, catalysts, and curing agents. The printing ink may be selected based on the printing method. It is particularly preferable to select the printing ink taking into consideration its adhesion to the colored thermoplastic resin layer 2, its printability, and its weather resistance as a flooring material or fitting.

[0023] The thickness of the pattern layer 5 can be adjusted as appropriate, taking into consideration the decorative properties required of the pattern layer 5, the three-dimensional formability of the decorative sheet 1, etc. The thickness of the pattern layer 5 is usually 1 μm or more and 1 mm or less, preferably 2 μm or more and 0.1 mm or less, and more preferably 2 μm or more and 50 μm or less.

[0024] To improve the adhesion between the design layer 5 and the transparent thermoplastic resin layer 6, an adhesive layer (not shown) may be provided on the surface of the design layer 5 that comes into contact with the transparent thermoplastic resin layer 6. By strengthening this adhesion, the decorative sheet 1 can be given the ability to be bent to conform to curved surfaces and right-angled surfaces. The resin used in the adhesive layer (not shown) is not particularly limited. For example, a two-component curing urethane resin can be used. Alternatively, the adhesive resin may be adhered to the design layer 5 with a urethane adhesive. For example, a coating device or a gravure printing device can be used to apply the resin used in the adhesive layer (not shown).

[0025] Furthermore, a glittering layer (not shown) may be provided between the picture layer 5 and the transparent thermoplastic resin layer 6 in order to suitably impart design effects such as a sense of depth and brightness to the decorative sheet 1. The glittering layer (not shown) preferably contains a glittering pigment and a binder resin. Examples of glittering pigments include pearlescent pigments and metallic pigments. In particular, pearlescent pigments are preferred because they can prevent a decrease in the light transmittance of the glittering layer and therefore do not impair the visibility of the picture layer 5.

[0026] Pearl pigments are pigments that can impart pearlescent luster. Examples include base particles whose surfaces are coated with a metal oxide. The base particles are preferably scaly particles such as mica. Examples of metal oxides include oxides of metals such as titanium, iron, zirconium, silicon, aluminum, and cerium. The metal oxides may be used alone or in combination. Specific examples include oxide-coated mica such as titanium mica, iron oxide-coated mica, iron oxide-coated mica titanium, Prussian blue-coated mica titanium, Prussian blue-iron oxide-coated mica titanium, chromium oxide-coated mica titanium, carmine-coated mica titanium, organic pigment-coated mica titanium, titanium oxide-coated mica, and titanium oxide-coated synthetic mica; oxide-coated glass powder such as titanium oxide-coated glass powder and iron oxide-coated glass powder; oxide-coated metal particles such as titanium oxide-coated aluminum powder; scaly flakes such as basic lead carbonate, lead hydrogen arsenate, and bismuth oxide chloride; fish scale powder, shell fragments, and pearl fragments.

[0027] Examples of metallic pigments include pigments made of metals such as aluminum, brass, stainless steel, tin, zinc, copper, nickel, gold powder, and silver, and alloys of these metals. The metallic pigments may be used alone or in combination of two or more.

[0028] From the viewpoint of providing excellent design effects, for example, when forming the glittering layer using gravure printing, the average particle diameter of the glittering pigment is preferably 40 μm or less, and more preferably 30 μm or less. From the same viewpoint, the ratio of [average particle diameter of glittering pigment / thickness of glittering layer] is preferably 0.01 or more and 15 or less, and more preferably 0.5 or more and 10 or less. In this specification, "average particle diameter" refers to the value that can be determined as the mass average value D50 in particle size distribution measurement using laser light diffraction method.

[0029] Examples of binder resins include thermoplastic resins and cured products of curable resin compositions, with the cured products of curable resin compositions being preferred from the viewpoint of durability. Examples of cured products of curable resin compositions include cured products of thermosetting resin compositions and cured products of ionizing radiation curable resin compositions. From the viewpoint of interlayer adhesion, the cured products of thermosetting resin compositions are preferred.

[0030] Examples of thermosetting resin compositions used in the glossy layer include polyester resin compositions, epoxy resin compositions, polyurethane resin compositions, aminoalkyd resin compositions, melamine resin compositions, guanamine resin compositions, urea resin compositions, and thermosetting acrylic resin compositions. These thermosetting resin compositions include monomers and / or prepolymers that constitute each resin, and a curing agent that is added as needed. The ionizing radiation-curable resin composition used in the glossy layer can be the same as the ionizing radiation-curable resin composition of the surface protective layer 7 described below.

[0031] The content of the glittering pigment in the glittering layer is preferably 10 to 90 parts by mass, and more preferably 50 to 80 parts by mass, relative to 100 parts by mass of the binder resin. By setting the content of the glittering pigment to 10 parts by mass or more, it is possible to impart a sufficient glossy appearance, and by setting it to 90 parts by mass or less, it is possible to prevent impairment of the visibility of the design layer described below. From the same viewpoint, the thickness of the glittering layer is preferably 1 μm to 30 μm, and more preferably 5 μm to 20 μm.

[0032] The glittering layer can be formed into any pattern depending on the design desired. Examples include wood grain, leather, stone, sand, tile, brickwork, fabric, geometric shapes, letters, symbols, abstract patterns, floral patterns, landscapes, and characters. It is preferable that the arbitrary pattern have shading to further enhance the design effect. Shading may be formed by varying the size or thickness of the halftone dots, but it is preferable to form it by varying the density of the halftone dots (i.e., the size of the halftone dots is uniform and the shading is formed by the density of the halftone dots).

[0033] The glittering layer can be formed, for example, by applying a coating liquid containing a glittering pigment and a binder resin using a general-purpose printing method such as gravure printing. When the shade of the glittering layer is formed by the density of halftone dots, the halftone dots on the printing plate can be formed using an FM (frequency modulation) screen.

[0034] [Transparent thermoplastic resin layer] The transparent thermoplastic resin layer 6 is a resin layer that provides thickness and depth for design purposes, as well as protecting the pattern layer 5 and imparting good surface properties so as to improve the weather resistance and abrasion resistance of the decorative sheet 1. The material for the transparent thermoplastic resin layer 6 is polyethylene resin. The polyethylene resin constituting the transparent thermoplastic resin layer 6 has a density of 0.90 [g / cm 3 ] or more 0.97 [g / cm 3 ] is preferably within the range below.

[0035] Furthermore, the thickness of the transparent thermoplastic resin layer 6 is preferably within the range of 20 μm to 200 μm. If the thickness of the transparent thermoplastic resin layer 6 is within the range of 20 μm to 200 μm, when the decorative sheet is embossed in the manufacturing process of the decorative sheet 1, a good uneven shape can be embossed regardless of the temperature range.

[0036] A lamination method can be used as a method for forming the transparent thermoplastic resin layer 6. Furthermore, for example, when an adhesive layer (not shown) is provided between the transparent thermoplastic resin layer 6 and the design layer 5, if the transparent thermoplastic resin layer 6 and the adhesive layer (not shown) are formed simultaneously, a method can be used in which both are extruded simultaneously by co-extrusion.

[0037] [Surface protective layer] The surface protective layer 7 is a layer that imparts surface properties such as abrasion resistance to the decorative sheet 1. The surface protective layer 7 also adjusts the surface gloss of the decorative sheet 1. The surface protective layer 7 may be a single layer or multiple layers. For example, the surface protective layer 7 may be formed by providing two layers, a first surface protective layer (not shown) and a second surface protective layer (not shown), in this order on the transparent thermoplastic resin layer 6. When providing the surface protective layer 7 consisting of the first surface protective layer (not shown) and the second surface protective layer (not shown), each layer may be applied and the coating film cured using a known coating device, heat drying device, or ionizing radiation irradiation device depending on the type of curable resin.

[0038] The surface protective layer 7 is mainly composed of a curable resin. That is, it is preferable that the resin component of the surface protective layer 7 is substantially composed of a curable resin. "Substantially" refers to, for example, 80 parts by mass or more when the total resin is 100 parts by mass. The surface protective layer 7 may contain weathering agents, plasticizers, stabilizers, fillers, dispersants, colorants such as dyes and pigments, solvents, etc., as needed.

[0039] Examples of materials that can be used for the surface protection layer 7 include ionizing radiation-curable resins and two-component curable urethane-based resins. The ionizing radiation-curable resins are not particularly limited. For example, transparent resins primarily composed of prepolymers (including oligomers) and / or monomers containing radically polymerizable double bonds in the molecule that can undergo polymerization and crosslinking reactions upon exposure to ionizing radiation such as infrared rays, ultraviolet rays, or electron beams can be used. These prepolymers or monomers can be used alone or in combination. Specific examples of prepolymers or monomers include compounds containing radically polymerizable unsaturated groups such as (meth)acryloyl groups and (meth)acryloyloxy groups, and cationically polymerizable functional groups such as epoxy groups in the molecule. Polyene / thiol-based prepolymers, which are combinations of polyene and polythiol, are also preferred. Here, the term "(meth)acryloyl group" refers to an acryloyl group or a methacryloyl group.

[0040] Examples of prepolymers having a radically polymerizable unsaturated group include polyester (meth)acrylate, urethane (meth)acrylate, epoxy (meth)acrylate, melamine (meth)acrylate, triazine (meth)acrylate, silicone (meth)acrylate, etc. The molecular weight of these is preferably about 250 to 100,000.

[0041] Furthermore, examples of the monomer having a radically polymerizable unsaturated group include monofunctional monomers such as methyl(meth)acrylate, 2-ethylhexyl(meth)acrylate, and phenoxyethyl(meth)acrylate. Examples of the polyfunctional monomer include diethylene glycol di(meth)acrylate, propylene glycol di(meth)acrylate, trimethylpropane tri(meth)acrylate, trimethylolpropane ethylene oxide tri(meth)acrylate, dipentaerythritol tetra(meth)acrylate, dipentaerythritol penta(meth)acrylate, and dipentaerythritol hexa(meth)acrylate.

[0042] Examples of prepolymers having a cationically polymerizable functional group include prepolymers of epoxy resins such as bisphenol-type epoxy resins and novolac-type epoxy compounds, and vinyl ether resins such as fatty acid vinyl ethers and aromatic vinyl ethers.

[0043] Examples of polyene-based prepolymers include those obtained by adding allyl alcohol to both ends of polyurethanes made from diols and diisocyanates, and examples of thiol-based prepolymers include polythiols such as trimethylolpropane trithioglycolate and pentaerythritol tetrathioglycolate.

[0044] The ionizing radiation may be, for example, electromagnetic waves or charged particles having energy sufficient to cause a curing reaction of molecules in an ionizing radiation-curable resin (composition). Examples of the curing reaction include crosslinking and curing reactions. The ultraviolet light source may be, for example, an ultra-high pressure mercury lamp, a high pressure mercury lamp, a low pressure mercury lamp, a carbon arc lamp, a black light, or a metal halide lamp. The wavelength of the ultraviolet light is preferably, for example, 190 nm or more and 380 nm or less. The electron beam source may be, for example, an electron beam accelerator such as a Cockcroft-Walton type, a Van de Graaf type, a resonant transformer type, an insulating core transformer type, a linear type, a dynamitron type, or a high-frequency type. In particular, those capable of irradiating electrons having an energy of 100 keV or more and 1000 keV or less (more preferably, an electron having an energy of 100 keV or more and 300 keV or less) are preferred.

[0045] The two-component curing urethane resin is not particularly limited. For example, a resin containing a polyol component having OH groups as a base component and an isocyanate component as a curing agent component can be used. Examples of the polyol component having OH groups include acrylic polyol, polyester polyol, polyether polyol, and epoxy polyol. Examples of the isocyanate component include tolylene diisocyanate, hexamethylene diisocyanate, and metaxylene diisocyanate. The thickness of the surface protection layer 7 is not particularly limited.

[0046] [Embossed part] An embossed portion 7a having a concave-convex pattern is formed on the surface of the surface protection layer 7 to impart a given design. Examples of the concave-convex pattern include the vessel grooves of a wood grain board, the concave-convex surface of a stone slab (such as a cleavage plane of granite), the texture of a cloth surface, a matte finish, a sand grain, a hairline, and a linear groove. The concave-convex pattern of the embossed portion 7a is provided so that it matches the design of the design layer 5.

[0047] The uneven pattern can be formed, for example, by embossing. The embossing method is not particularly limited. For example, a known sheet-fed embossing machine or rotary embossing machine can be used. This allows the decorative sheet 1 to be given a good texture that is close to that of real wood or stone.

[0048] [Light absorbing part] The light-absorbing portion 3 is a region formed of a material that has light-absorbing properties for light of a predetermined wavelength, specifically infrared light, and is formed of a material that has infrared absorbing properties. More specifically, the light-absorbing portion 3 is formed of a material that has higher light-absorbing properties for infrared light than for light of other wavelengths and has higher light-absorbing properties for infrared light than the colored thermoplastic resin layer 2. As will be described in more detail below, the light-absorbing portion 3 is provided to facilitate the formation of embossed portions 7a at desired positions (positions that are in harmony with the pattern of the pattern layer 5) in order to achieve a gloss matte finish, i.e., to easily impart to the decorative sheet 1 a texture similar to that of actual wood or stone.

[0049] In this embodiment, the light absorbing portion 3 is formed using ink containing a material having an infrared absorbing effect. As the ink used for the light absorbing portion 3, for example, a urethane-based printing ink can be used.

[0050] There are no particular limitations on the color of the ink used for the light-absorbing portion 3, and it is possible to use a dark black ink, or a colorless, transparent, or light-colored (light-colored) ink that is relatively nearly transparent. The color (shade) of the ink may be selected appropriately depending on the design to be expressed, etc.

[0051] In the decorative sheet 1 according to this embodiment, the light absorbing portions 3 are provided below the colored thermoplastic resin layer 2. Therefore, when the decorative sheet 1 is viewed from the surface protective layer 7 side, the visibility of the light absorbing portions 3 is reduced. As a result, when a high-concentration black ink having infrared absorbing properties is used for the light absorbing portions 3, the visibility of the black ink forming the light absorbing portions 3 can be reduced when the decorative sheet 1 is viewed from the surface protective layer 7 side. For this reason, it is not necessary to use a dark color pattern for the design layer 5 in order to reduce the visibility of the light absorbing portions 3 containing ink, and as a result, it is also possible to employ a light color pattern for the design layer 5.

[0052] In this way, the decorative sheet 1 of this embodiment can suppress the restrictions on pattern expression caused by the pattern layer 5 that arise from the provision of the light-absorbing portion 3, and can express designs that are close to the real thing, such as actual wood or stone.

[0053] Furthermore, the decorative sheet 1 according to this embodiment can further reduce the visibility of the light-absorbing portions 3 from the surface protective layer 7 side by using a colorless, transparent or light-colored ink as the ink containing a material with infrared absorbing properties. As a result, even if the base color or pattern is a light color close to white, the original color can be seen, and the intended color can be more suitably expressed. Therefore, the decorative sheet 1 according to this embodiment can express good colors that are close to the real colors of actual wood or stone.

[0054] Furthermore, the light-absorbing part 3 should have an infrared transmittance of 60% or less at a wavelength of 2000 nm, preferably 40% or less, and even more preferably 15% or less. In other words, the light-absorbing part 3 is formed from ink containing a material with infrared absorption properties, and the infrared absorption effect of the ink should be such that the infrared transmittance at a wavelength of 2000 nm is 60% or less. By making the infrared transmittance at a wavelength of 2000 nm in the light-absorbing part 3 60% or less, it is possible to suppress gloss and obtain a sufficient gloss matte effect.

[0055] The material having infrared absorbing properties in the light absorbing section 3 can be at least one of inorganic materials such as carbon black, tin-doped indium oxide (ITO), antimony-doped tin oxide (ATO), lanthanum hexaboride (LaB6), cesium-doped tungsten oxide, etc. Furthermore, organic materials such as near-infrared absorbing materials, infrared absorbing materials, and phthalocyanine-based materials, as well as existing materials having infrared absorbing properties, can also be used.

[0056] The light absorbing portions 3 are arranged at positions that are synchronized with the pattern of the pattern layer 5. For example, in the case of a wood grain patterned pattern layer 5, the light absorbing portions 3 are formed at positions that overlap with the wood grain board conduit grooves of the pattern layer 5 in a planar view. Note that synchronization here means that the light absorbing portions 3 are formed at positions that overlap with the pattern of the pattern layer 5 in a planar view. The thickness of the light absorbing parts 3 may be such that the transparent thermoplastic resin layer 6 and the surface protective layer 7 can be softened to an extent that the unevenness can be sufficiently formed in the surface protective layer 7 during the embossing process described below. In order to obtain a sufficient gloss matte effect, it is preferable that the difference in gloss between the part where the light absorbing parts 3 are formed and the part where they are not formed is 5 or more.

[0057] Furthermore, by providing the light absorbing portion 3 below the colored thermoplastic resin layer 2, the decorative sheet 1 can have good bending processability when processed into a decorative member.

[0058] [Pattern layer] The pattern layer 8a is formed on the surface of the colored thermoplastic resin layer 2 opposite to the design layer 5. The pattern layer 8a is composed only of light absorbing parts 3 made of a material that is light absorbing to infrared rays.

[0059] [Primer layer] The primer layer 8 is a base layer that improves adhesion and corrosion resistance with a substrate (not shown) to which the decorative sheet 1 is attached. The primer layer 8 is formed on the surface of the colored thermoplastic resin layer 2 opposite the design layer 5 so as to cover the pattern layer 8a. The primer layer 8 is formed using, for example, a polyester resin, an organic additive, a pigment, etc. An anti-rust pigment may be blended into the primer layer 8 to improve corrosion resistance. The thickness of the primer layer 8 is, for example, in the range of 1 μm to 10 μm.

[0060] [Method for manufacturing decorative sheet] Next, an example of a method for producing a decorative sheet according to this embodiment will be described with reference to FIG. First, a colored thermoplastic resin layer 2 is formed. The colored thermoplastic resin layer 2 is formed using a polyolefin resin such as a polyethylene resin (FIG. 2(a)). Next, a wood grain pattern or the like is printed on the colored thermoplastic resin layer 2 using, for example, a urethane-based printing ink to form a pattern layer 5. Furthermore, a polyethylene resin layer is formed as a transparent thermoplastic resin layer 6 on the pattern layer 5 by, for example, extrusion lamination.

[0061] Then, a surface protective layer 7 is laminated on the transparent thermoplastic resin layer 6. That is, as shown in Fig. 2(a), a lamination step is carried out in which a design layer 5, a transparent thermoplastic resin layer 6, and a surface protective layer 7 are laminated in this order on one surface of the colored thermoplastic resin layer 2.

[0062] Next, on the surface of the colored thermoplastic resin layer 2 opposite the pattern layer 5, light-absorbing sections 3, which are regions containing a material that is light-absorbing for light of a predetermined wavelength (infrared rays), are printed in positions corresponding to the pattern of the pattern layer 5, to form a pattern layer 8a. In other words, a step is carried out in which the light-absorbing sections 3, which are regions containing a material that has infrared absorbing properties, are arranged so as to match the pattern, thereby forming the pattern layer 8a. For example, the light-absorbing sections 3 are printed in predetermined positions that match the pattern of the pattern layer 5 using ink (black ink or light-colored ink (including colorless and transparent)) that contains a material that has infrared absorbing properties (Figure 2(b)).

[0063] Next, a primer layer 8 made of, for example, a polyester resin is laminated on the colored thermoplastic resin layer 2 including the light absorbing portions 3 so as to fill the gaps between the light absorbing portions 3 and cover the upper surface thereof (FIG. 2(c)).

[0064] Next, the laminate in which these layers are stacked is heated, for example, using an IR heater, and the entire laminate is irradiated with infrared light (irradiation light) (FIG. 2(d)). Immediately after the infrared irradiation, an embossing plate such as an embossing roll is pressed onto the surface of the surface protective layer 7 (FIG. 2(e)). This forms embossed portions 7a, and the decorative sheet 1 is formed. In other words, a step of irradiating with irradiation light (for example, infrared light) in which the power of light of a predetermined wavelength is stronger than the power of light of other wavelengths, and a step of pressing an embossing plate for forming an embossed shape onto the surface protective layer 7 are carried out after the step of irradiating with the irradiation light, are carried out.

[0065] The method for forming each layer is not particularly limited, and any method can be used. An adhesive layer may be provided between the design layer 5 and the transparent thermoplastic resin layer 6 using an adhesive resin, or an adhesive resin and a urethane adhesive or the like.

[0066] Here, the light-absorbing portion 3 is formed of black ink having infrared absorbing properties. Furthermore, the light-absorbing portion 3 is made of a material with significantly lower infrared transmittance than the other layers. Therefore, compared to the infrared transmittance of the region where the light-absorbing portion 3 is formed in a planar view, the infrared transmittance of the region where the light-absorbing portion 3 is not formed is higher, resulting in a difference in infrared transmittance in the laminate shown in FIG. 2(d) in a planar view. Therefore, when the laminate is irradiated with infrared rays, the transparent thermoplastic resin layer 6 and the surface protective layer 7 are more likely to soften in the portion of the surface protective layer 7 that overlaps with the light-absorbing portion 3 in a planar view than in the portion not overlapping with the light-absorbing portion 3. In other words, after infrared irradiation, the transparent thermoplastic resin layer 6 and the surface protective layer 7 have portions that are more likely to soften and portions that are less likely to soften. Therefore, when an embossing plate is pressed against the transparent thermoplastic resin layer 6 and the surface protective layer 7 in this state, unevenness is more likely to form in the softened portion, and unevenness is less likely to form in the less-softened portion. As a result, unevenness is likely to form in the softened portions of the transparent thermoplastic resin layer 6 and the surface protective layer 7, i.e., in the portions that overlap with the light-absorbing portions 3 in a planar view. As a result, embossed portions 7a consisting of uneven shapes that are in tune with the light-absorbing portions 3 are likely to be formed only in the positions of the transparent thermoplastic resin layer 6 and the surface protective layer 7 that overlap with the light-absorbing portions 3 in a planar view. Furthermore, the light-absorbing portions 3 are made to have an infrared transmittance of 60% or less at a wavelength of 2000 nm by using ink with infrared absorbing properties. As a result, gloss is suppressed and a sufficient gloss matte effect is obtained.

[0067] This allows the embossed portions 7a to be formed in positions that are in sync with the picture layer 5, meaning that the embossed portions 7a that are in sync with the picture layer 5 can be easily created without the need for highly accurate positioning operations. Therefore, it is possible to provide a decorative sheet 1 that has a texture close to the real thing, expresses good colors that are close to the real thing, and has excellent design properties.

[0068] The timing for pressing the embossing plate onto the transparent thermoplastic resin layer 6 and the surface protective layer 7 after infrared irradiation is not limited to immediately after infrared irradiation, but may be any timing that allows pressing the plate onto the surfaces of the transparent thermoplastic resin layer 6 and the surface protective layer 7 to selectively form an uneven shape in the parts softened by infrared irradiation.

[0069] In addition, other processes may be included between the process of creating the surface protection layer 7 and the process of performing infrared irradiation, and the point is that the infrared irradiation should be performed in a state where the transparent thermoplastic resin layer 6 and the surface protection layer 7 have been formed.

[0070] Thus, according to the manufacturing method of the decorative sheet 1 of this embodiment, by irradiating a laminate in which each layer is stacked with infrared rays and then pressing an embossing plate, it is possible to strongly emboss the portions that overlap with the light-absorbing portions 3 in a plan view. In other words, the embossed portions 7a can be easily formed in the desired positions without having to precisely position the area where the embossing plate is pressed. As a result, a decorative sheet with excellent design properties can be easily obtained.

[0071] Furthermore, because the light absorbing portions 3 are provided below the colored thermoplastic resin layer 2, the visibility of the light absorbing portions 3 is reduced when the decorative sheet 1 is viewed from the surface protective layer 7 side. As a result, although a colorless, transparent or light-colored ink having infrared absorbing properties is used for the light absorbing portions 3, the visibility of the light absorbing portions 3 can be further reduced when the decorative sheet 1 is viewed from the surface protective layer 7 side. For this reason, the visibility of the light absorbing portions 3 can be significantly reduced even without using a dark color pattern for the design layer 5, and as a result, a light-colored pattern can be adopted for the design layer 5, and the restrictions on pattern expression caused by the provision of the light absorbing portions 3 can be significantly reduced.

[0072] Furthermore, a colored thermoplastic resin layer 2 and a design layer 5, as well as a transparent thermoplastic resin layer 6 and a surface protective layer 7, are laminated on top of a pattern layer 8a consisting of light-absorbing portions 3 made using a colorless, transparent or light-colored ink containing a material with infrared absorbing properties, and embossed portions 7a are formed in a position on the surface protective layer 7 that overlaps with the light-absorbing portions 3 in a planar view, thereby further reducing the visibility of the light-absorbing portions 3 and greatly reducing the impact of the light-absorbing portions 3, which are useful in the manufacturing process of the decorative sheet 1, on the appearance of the decorative sheet 1, and a highly attractive decorative sheet 1 can be obtained in which the design of the design layer 5 and the embossed portions 7a are in harmony.

[0073] Furthermore, since the light absorbing portion 3 is provided in harmony with the pattern of the pattern layer 5, it is possible to form uneven portions in harmony with the pattern of the pattern layer 5, that is, it is possible to easily realize a gloss matte effect in harmony with the pattern. Furthermore, by providing the unevenness, the gloss matte expression is achieved, which improves the abrasion resistance of the gloss matte design and prevents the gloss matte pattern from coming off, etc. Therefore, for example, a synchronized gloss matte expression can be achieved even in flooring materials.

[0074] It is considered that the heat energy retained by the light absorbing parts 3 due to infrared irradiation is affected by the infrared transmittance and reflectance of each layer constituting the laminate, but the heat energy retained by the other layers is uniform regardless of whether the light absorbing parts 3 are formed or not. Furthermore, the heat energy retained by each layer due to infrared irradiation is minute compared to the energy absorbed in the light absorbing parts 3 and is negligible. Therefore, the influence of the infrared transmittance and reflectance of the other layers on the development of gloss matte can be considered to be negligible, and it can be considered that gloss matte is developed due to the relative difference between the heat energy retained by the area where the light absorbing parts 3 are formed and the heat energy retained by the area where the light absorbing parts 3 are not formed.

[0075] 2, the pattern layer 5, transparent thermoplastic resin layer 6, and surface protective layer 7 are formed on one side of the colored thermoplastic resin layer 2, and then the light-absorbing portion 3 and primer layer 8 are formed on the other side of the colored thermoplastic resin layer 2, but this is not limited to this. After forming the pattern layer 5 on one side of the colored thermoplastic resin layer 2, the light-absorbing portion 3 is formed on the side of the colored thermoplastic resin layer 2 opposite the pattern layer 5, and the primer layer 8 is formed so as to cover the light-absorbing portion 3. Thereafter, the transparent thermoplastic resin layer 4 and surface protective layer 7 may be laminated in this order on the side of the pattern layer 5 opposite the colored thermoplastic resin layer 2.

[0076] [Effects of this embodiment] (1) The decorative sheet 1 of this embodiment is a decorative sheet having a pattern layer 5, and comprises the pattern layer 5, a transparent thermoplastic resin layer 6, and a surface protective layer 7 laminated in this order on one side of the colored thermoplastic resin layer 2, and on the other side of the colored thermoplastic resin layer 2, a light absorbing section 3, which is an area containing a predetermined material that is more light absorbing to infrared rays than the colored thermoplastic resin layer 2, is arranged in harmony with the pattern of the pattern layer 5, the light absorbing section 3 has an infrared transmittance of 60% or less at a wavelength of 2000 nm, and an embossed section 7a is formed on the surface protective layer 7 at a position that overlaps with the light absorbing section 3 in a planar view.

[0077] This allows the embossed portion 7a to be easily provided in a position on the decorative sheet 1 that is in sync with the pattern layer 5, and the infrared absorbing properties of the light absorbing portion 3 suppress gloss, thereby achieving a sufficient matte gloss effect. It also reduces the visibility of the light absorbing portion 3 from the surface protective layer 7 side. Furthermore, by providing the unevenness, the matte gloss effect is achieved, improving the abrasion resistance of the matte gloss design and preventing the matte gloss design from coming off. Furthermore, the embossed portion can be easily formed in the desired position without the need for highly accurate positioning of the area where the embossing plate is to be pressed.

[0078] As a result, a decorative sheet can be obtained that has a texture closer to the real thing, has excellent design properties, and is able to prevent the pattern from coming off.

[0079] Furthermore, the colored thermoplastic resin layer is composed of a layer containing a polyolefin resin, and the transparent thermoplastic resin layer is composed of a layer containing a polyethylene resin. Here, when the decorative sheet is formed solely from a polyolefin resin, depending on the type of polyolefin resin used as the transparent thermoplastic resin layer, the embossing may not be sufficient. For example, the melting point of polyethylene resin is 130°C, while the melting point of polypropylene resin is 165°C, with polyethylene resin having a lower melting point. Therefore, when polypropylene resin is used as the transparent thermoplastic resin layer, the embossing is difficult to achieve unless sufficient heating is performed. When polyethylene resin is used as the transparent thermoplastic resin layer, its melting point is lower than that of polypropylene resin, allowing it to be processed at a lower temperature and providing good processability. As a result, by forming the colored thermoplastic resin layer from a layer containing a polyolefin resin and the transparent thermoplastic resin layer from a layer containing a polyethylene resin, the embossing can be achieved sufficiently.

[0080] Furthermore, if vinyl chloride resin, for example, is used as the constituent resin of the decorative sheet 1, toxic gases will be produced when the decorative sheet 1 is burned, but the decorative sheet 1 of this embodiment does not use vinyl chloride resin, making it possible to realize an environmentally friendly decorative sheet 1.

[0081] (2) In addition, the decorative sheet 1 according to this embodiment can use at least one inorganic material selected from the group consisting of carbon black, tin-doped indium oxide, antimony-doped tin oxide, lanthanum hexaboride, and cesium-doped tungsten oxide as the material that has light absorption properties for infrared rays contained in the light-absorbing portion 3.

[0082] This allows the transparent thermoplastic resin layer 6 and the surface protective layer 7 to be softened more reliably by infrared irradiation in the areas overlapping with the light absorbing parts 3, and more reliably allows the areas overlapping with the light absorbing parts 3 to be strongly embossed. As a result, a decorative sheet with excellent design properties can be obtained more easily.

[0083] (3) Because the light absorbing portions 3 are provided below the colored thermoplastic resin layer 2, the visibility of the light absorbing portions 3 is reduced when the decorative sheet 1 is viewed from the surface protective layer 7 side. As a result, although a high-concentration black ink with infrared absorbing properties is used for the light absorbing portions 3, it is possible to prevent the light absorbing portions 3 from being visible when the decorative sheet 1 is viewed from the surface protective layer 7 side. For this reason, even without using a dark color pattern for the design layer 5, it is possible to prevent the light absorbing portions 3 containing black ink from being visible, and as a result, it is possible to employ a light-colored pattern for the design layer 5, and it is possible to reduce the restrictions on pattern expression caused by the design layer 5 due to the provision of the light absorbing portions 3.

[0084] Furthermore, a colored thermoplastic resin layer 2 and a pattern layer 5, as well as a transparent thermoplastic resin layer 6 and a surface protective layer 7, are laminated on top of the light absorbing portion 3 made of a highly concentrated black ink with infrared absorption properties, and an embossed portion 7a is formed in a position on the surface protective layer 7 that overlaps with the light absorbing portion 3 in a plan view. This reduces the visibility of the light absorbing portion 3 made of black ink, suppresses the effect on the appearance of the decorative sheet 1 of the light absorbing portion 3, which is useful in the manufacturing process of the decorative sheet 1, and makes it possible to obtain a decorative sheet 1 with a highly designed appearance in which the pattern of the pattern layer 5 and the embossed portion 7a are in harmony.

[0085] Furthermore, since the light absorbing portion 3 is provided in harmony with the pattern of the pattern layer 5, an embossed portion 7a can be formed in harmony with the pattern of the pattern layer 5, that is, a gloss matte effect in harmony with the pattern can be easily achieved. Furthermore, by providing the embossed portion 7a, a gloss matte expression is achieved, which can prevent the gloss matte pattern from coming off, etc. Therefore, for example, a synchronized gloss matte expression can be achieved even in flooring materials, etc.

[0086] [Modification] As shown in Figure 3, the decorative sheet 1 according to the above embodiment may be attached to a base material 9, which is a base material for a decorative material, to form a decorative member 10. In the decorative member 10, the decorative sheet 1 may be provided on at least one side of the base material 9, or may be provided on both sides.

[0087] [Base material] The substrate 9 can be a wood substrate or a metal substrate. Examples of wood substrates that can be used include wood veneers, wood plywood, laminated lumber, particle board, medium-density fiberboard, and hard fiberboard. Examples of metal substrates that can be used include steel plates and aluminum plates. The substrate 9 can also be made of resins such as plastics, or composite materials thereof. That is, the substrate 9 can be a resin substrate. The substrate 9 can also be a non-combustible substrate made of, for example, non-combustible steel plates or non-combustible materials as specified in Ministry of Construction Notification No. 1400.

[0088] Thus, decorative member 10 comprises substrate 9 and decorative sheet 1 provided on at least one side of substrate 9. Substrate 9 can be any of a wood substrate, a resin substrate, a non-flammable substrate, and a metal substrate. This makes it possible to provide a decorative material that has a texture closer to the real thing, has excellent design properties, and is able to prevent the pattern from coming off.

[0089] Second Embodiment Next, a second embodiment of the present invention will be described. In the first embodiment, the light-absorbing portion, which is a region of the design layer containing a material that is light-absorbing to infrared rays, is provided below the colored thermoplastic resin layer, but the light-absorbing portion may be provided in the design layer, i.e., the design layer may have the light-absorbing portion.

[0090] 4, the decorative sheet 11 according to this embodiment may have a configuration in which the light absorbing portions 31 are part of the pattern layer 51, and the light absorbing portions 31 and the non-light absorbing portions 51a form a single pattern. The decorative sheet 11 differs from the decorative sheet 1 according to the first embodiment in that the light absorbing portions 31 are provided as part of the pattern layer 51.

[0091] For example, in the case of a wood grain pattern picture layer 51, the light absorbing portion 31 is disposed at a position overlapping with the wood grain board duct groove of the picture layer 51. In this embodiment, the light absorbing portion 31 is formed of a material containing black ink containing carbon black. Furthermore, similar to the light absorbing portion 3 in the first embodiment, the light absorbing portion 31 in this embodiment has higher light absorption properties for infrared rays than light of other wavelengths and has higher light absorption properties for infrared rays than the picture layer, and has an infrared transmittance at a wavelength of 2000 nm of 60% or less, more preferably 40% or less, and even more preferably 15% or less.

[0092] The picture layer 5 has light-absorbing portions 3 made of a material containing black ink and non-light-absorbing portions 51a, and the light-absorbing portions 3 and non-light-absorbing portions 51a form a single layer that forms a single picture. The light-absorbing portions 3 are arranged at positions in the picture layer 5 that are to be synchronized with the embossed portions 7a.

[0093] The printing ink for the non-light-absorbing portions 51a is a mixture of a solvent and solid components such as a colorant, a binder resin, etc. In other words, the non-light-absorbing portions 51a may have a configuration equivalent to that of the design layer 5 in the first embodiment.

[0094] In FIG. 4, the same components as those in the first embodiment are denoted by the same reference numerals and the description thereof will be omitted. In this embodiment, when creating the pattern layer 51, for example, a urethane-based black ink containing carbon black is used to form light-absorbing portions 31 at positions of the pattern in the pattern layer 51 that are to be synchronized with the embossed portions 7a, and non-light-absorbing portions 51a are formed in other areas.

[0095] As described above, the decorative sheet 11 according to this embodiment is a decorative sheet having a design layer 51, and includes the design layer 51, the transparent thermoplastic resin layer 6, and the surface protective layer 7, which are laminated in this order on one side of the colored thermoplastic resin layer 2. The design layer 51 has a light-absorbing portion 31, which is a region containing a predetermined material that is light-absorbing to infrared light. The light-absorbing portion 31 has an infrared transmittance of 60% or less at a wavelength of 2000 nm, and an embossed portion 7a is formed in the surface protective layer 7 at a position that overlaps the light-absorbing portion 31 in a plan view. The light-absorbing portion 31 is more light-absorbent to infrared light than light of other wavelengths, and is more light-absorbent to infrared light than the design layer 51. Furthermore, the light-absorbing portion 31 may have an infrared transmittance of 60% or less at a wavelength of 2000 nm, more preferably 40% or less, and even more preferably 15% or less. That is, the light absorbing portion 31 is formed of ink containing a material having an infrared absorbing effect, and the infrared absorbing effect of the ink is such that the infrared transmittance at a wavelength of 2000 nm is 60% or less.

[0096] This allows the embossed portion 7a to be provided in a position on the decorative sheet 11 that is more in sync with the pattern of the pattern layer 51, and the gloss can be suppressed by the infrared absorbing properties of the light absorbing portion 31, thereby achieving a sufficient gloss matte effect. Furthermore, by providing the unevenness, the gloss matte expression is achieved, which improves the abrasion resistance of the gloss matte design and prevents the gloss matte pattern from coming off.

[0097] As a result, a decorative sheet can be obtained that has a texture closer to the real thing, has excellent design properties, and is able to prevent the pattern from coming off.

[0098] Furthermore, the pattern of the pattern layer 51 may be partially formed by the light-absorbing portions 31. This allows the embossed portions 7a to be provided at positions that are more reliably in sync with the pattern (for example, wood grain board duct grooves), and the light-absorbing portions 31 made using black ink can be visually recognized as part of the pattern, while the gloss matte effect can further improve the design.

[0099] Also in this case, as in the first embodiment, by constructing the colored thermoplastic resin layer 2 from a layer containing a polyolefin resin and the transparent thermoplastic resin layer 6 from a layer containing a polyethylene resin, it is possible to provide a decorative sheet 11 that can be processed at a lower temperature and is environmentally friendly.

[0100] [Modification] (1) In the second embodiment described above, the light absorbing portions 31 are part of the picture layer 51, and the light absorbing portions 31 and the non-light absorbing portions 51a form a single picture in the picture layer 5. However, the configuration of the decorative sheet according to this embodiment is not limited to this. For example, as shown in Figure 5, a decorative sheet 12 according to a modified example of the second embodiment may have the light absorbing portions 32 provided on the main picture layer 5b. Note that in Figure 5, components similar to those in the first embodiment are designated by the same reference numerals, and their description will be omitted.

[0101] Specifically, the design layer 52 in the decorative sheet 12 includes a main design layer 52b and a pattern layer 52c laminated on the main design layer 52b. The pattern layer 52c is composed only of light-absorbing sections 32 arranged in sync with the embossed sections 7a. The design of the design layer 52 is primarily formed by the main design layer 52b, and the pattern layer 52c, i.e., the light-absorbing sections 32, are formed from a material that allows the main design layer 52b to be seen. Specifically, unlike the light-absorbing sections 31 in the second embodiment, the light-absorbing sections 32 are formed from a material that has infrared absorption properties rather than a material containing black ink, using a colorless, transparent, or light-colored ink. Similar to the light-absorbing sections 3 in the first embodiment, the light-absorbing sections 32 in this embodiment should have an infrared transmittance of 60% or less at a wavelength of 2000 nm, preferably 40% or less, and even more preferably 15% or less. Furthermore, the light absorbing portion 32 has a higher light absorption property for infrared rays than light of other wavelengths, and has a higher light absorption property for infrared rays than the transparent thermoplastic resin layer 6.

[0102] Furthermore, the light absorbing portion 32 in this embodiment can be made of at least one of inorganic materials having infrared absorbing properties, such as tin-doped indium oxide (ITO), antimony-doped tin oxide (ATO), lanthanum hexaboride (LaB6), cesium-doped tungsten oxide, etc. That is, the light absorbing portion 32 is formed of a colorless, transparent or light-colored ink that has infrared absorbing properties and allows the main design layer 52b to be visible.

[0103] In this embodiment, when creating the design layer 52, the main design layer 52b is laminated on the colored thermoplastic resin layer 2, the light absorbing portions 32 are formed on the main design layer 52b as the pattern layer 52c, and the transparent thermoplastic resin layer 6 is laminated on the pattern layer 52c. In other words, the transparent thermoplastic resin layer 6 is laminated on the main design layer 52b and the light absorbing portions 32 so as to fill the gaps between the light absorbing portions 32 and cover their upper surfaces.

[0104] In this way, the decorative sheet 12 relating to a modified example of the second embodiment is a decorative sheet having a pattern layer 52, and comprises the pattern layer 52, a transparent thermoplastic resin layer 6, and a surface protection layer 7 laminated in that order on one side of the colored thermoplastic resin layer 2, and the pattern layer 52 has a main pattern layer 52b that forms the pattern and a light-absorbing portion 32 which is an area containing a specified material that is more light-absorbing to infrared rays than the transparent thermoplastic resin layer 6, and the light-absorbing portion 32 is arranged on the main pattern layer 52b in synchronization with the pattern.

[0105] As a result, even when the light absorbing portion 32 is laminated on the main pattern layer 52b, it is possible to obtain the same effects as in the second embodiment. Furthermore, because the light absorbing portion 32 is formed using a material that is colorless and transparent or a pale color that is relatively close to transparent, even when the light absorbing portion 32 is laminated on the main pattern layer 52b, the pattern of the main pattern layer 52b can be seen through the light absorbing portion 32.

[0106] In addition, the gloss can be suppressed by the infrared absorbing properties of the light absorbing portion 32, and the gloss matte effect can be fully obtained. Furthermore, the gloss matte expression is achieved by providing unevenness, which improves the abrasion resistance of the gloss matte design and prevents the gloss matte pattern from coming off. As a result, a decorative sheet can be obtained that has a texture closer to the real thing, has excellent design properties, and is able to prevent the pattern from coming off.

[0107] Furthermore, by constructing the colored thermoplastic resin layer 2 from a layer containing a polyolefin resin and the transparent thermoplastic resin layer 6 from a layer containing a polyethylene resin, it is possible to provide a decorative sheet 12 that can be cured at a lower temperature and is environmentally friendly.

[0108] (2) The decorative sheet 11 according to the second embodiment may be bonded to a substrate for a decorative material to form a decorative member. In this case, the substrate 9 (see FIG. 3) in the decorative member 10 according to the modified example of the first embodiment may be used as the substrate for the decorative material. In this case, the decorative sheet 11 only needs to be provided on at least one side of the substrate 9, and may also be provided on both sides. Furthermore, instead of the decorative sheet 11, a decorative sheet 12 may be provided on at least one side of the substrate 9 to form a decorative member. This makes it possible to provide a decorative member that has a texture closer to the real thing, has excellent design properties, and is capable of preventing pattern removal, similar to the decorative member 10 according to the modified example of the first embodiment. [Example]

[0109] The present invention will be described in detail below with reference to examples and comparative examples, but the present invention is not limited to the following examples.

[0110] <First Example> Example 1 Thickness 55μm, density 0.95g / cm 3 A wood grain pattern was printed on one surface of the colored thermoplastic resin layer 2 made of a PE (polyethylene) layer using a urethane-based printing ink to form a pattern layer 5.

[0111] Next, PE (polyethylene) resin was extrusion laminated onto the surface of the colored thermoplastic resin layer 2 on which the pattern layer 5 was formed, to a thickness of 90 μm and a density of 0.95 g / cm 3 A transparent thermoplastic resin layer 6 made of the above was formed. The transparent thermoplastic resin layer 6 was formed by laminating it onto the pattern layer via an adhesive layer (not shown) made of adhesive resin (urethane adhesive).

[0112] Furthermore, on the transparent thermoplastic resin layer 6, a surface protection layer 7 containing an ultraviolet curable resin containing an acrylic resin composition as a main component was laminated. In addition, a light-absorbing portion 3 was printed on the other side of the colored thermoplastic resin layer 2 (the side opposite the pattern layer) by printing a pattern with black ink made of a urethane-based printing ink containing carbon black as an infrared-absorbing material.

[0113] Furthermore, a primer layer 8 was formed on the colored thermoplastic resin layer 2 including the light-absorbing portion 3, to obtain a laminate. The light absorbing portion 3 had an infrared transmittance of 8% at a wavelength of 2000 nm. After forming the primer layer 8, the laminate was heated with an infrared heater as a post-embossing step, and then an embossing roll was pressed against the surface protective layer 7 to form embosses, thereby obtaining the decorative sheet 1 of Example 1. The light irradiated by the infrared heater was short-wavelength-rich infrared light, i.e., infrared light with a high content of wavelength components in the range of 800 nm to 2500 nm, the power of which was stronger than the power of other wavelengths.

[0114] Example 2 The light absorbing portion 3 had an infrared transmittance of 38% at a wavelength of 2000 nm. Other than that, the decorative sheet 1 of Example 2 was obtained in the same manner as in Example 1 above. Example 3 The light absorbing portion 3 had an infrared transmittance of 60% at a wavelength of 2000 nm. Other than that, the decorative sheet 1 of Example 3 was obtained in the same manner as in Example 1 above.

[0115] Example 4 The light absorbing portion 3 had an infrared transmittance of 15% at a wavelength of 2000 nm. Other than that, the decorative sheet 1 of Example 4 was obtained in the same manner as in Example 1 above. Example 5 A transparent ink made of a urethane-based printing ink containing an infrared absorbing material was pattern-printed on the other surface of the colored thermoplastic resin layer 2 (the surface opposite the pattern layer 5) to form light-absorbing portions 3. Otherwise, the decorative sheet 1 of Example 5 was obtained in the same manner as in Example 1 above.

[0116] Example 6 Thickness 50μm, density 0.91g / cm 3 a colored thermoplastic resin layer 2 made of a PP layer; a pattern layer 51 made of light-absorbing portions 31 pattern-printed with black ink made of urethane-based printing ink and non-light-absorbing portions 51a made of urethane-based printing ink and formed adjacent to the light-absorbing portions 31; and a sheet of paper having a thickness of 38 μm and a density of 0.95 g / cm. 3 A laminate was prepared comprising a transparent thermoplastic resin layer 6 made of a PE layer and a surface protection layer 7 mainly composed of an acrylic resin composition. The infrared transmittance of the light absorbing portion 3 at a wavelength of 2000 nm was set to 24%. The transparent thermoplastic resin layer 6 is formed by laminating it onto the pattern layer 51, and after forming the surface protective layer 7, the laminate is heated with an infrared heater, and then an embossing roll is pressed against the surface protective layer 7 to form an embossed portion 7a, and further a primer layer 8 is formed to obtain the decorative sheet 11.

[0117] Example 7 Thickness 50μm, density 0.91g / cm 3 The pattern layer 52 is formed by a colored thermoplastic resin layer 2 made of a PP layer, a main pattern layer 52b formed using a urethane-based ink, and a light-absorbing portion 32 pattern-printed with a transparent ink made of a urethane-based printing ink containing an infrared absorbing material. 3A laminate was prepared by forming a transparent thermoplastic resin layer 6 made of a PE layer and a surface protection layer 7 mainly composed of an acrylic resin composition. The infrared transmittance of the light absorbing portion 32 at a wavelength of 2000 nm was set to 25%.

[0118] The transparent thermoplastic resin layer 6 is formed by laminating it onto the pattern layer 52, and after forming the surface protective layer 7, the laminate is heated with an infrared heater, and then an embossing roll is pressed against the surface protective layer 7 to form an embossed portion 7a, and then a primer layer 8 is formed to obtain the decorative sheet 12.

[0119] (Comparative Example 1) In Comparative Example 1, the light-absorbing portion 3 was not provided on the other surface (the surface opposite the pattern layer 5) of the colored thermoplastic resin layer 2, and the infrared transmittance at a wavelength of 2000 nm in the colored thermoplastic resin layer 2 was set to 65%. Otherwise, a decorative sheet 1 was produced in the same manner as in Example 1.

[0120] 〔evaluation〕 The infrared transmittance was measured for each of the decorative sheets of Examples 1 to 7 and Comparative Example 1. The infrared transmittance was measured by the method described below. The glossiness and the difference in glossiness were obtained for each of the decorative sheets of Examples 1-7 and the decorative sheet of Comparative Example 1. The methods described below were used for obtaining the data. The results are shown in Table 1. Furthermore, the decorative sheets of Examples 1-7 and Comparative Example 1 were each evaluated for gloss / matt design.

[0121] [Infrared transmittance measurement] The infrared transmittance was measured for each of the decorative sheets of Examples 1-7 and Comparative Example 1. Specifically, an ultraviolet-visible spectrophotometer UV3600 manufactured by SHIMADZU was used to measure the infrared transmittance at a wavelength of 2000 nm.

[0122] [Gloss measurement] After embossing each of the decorative sheets of Examples 1-7 and the decorative sheet of Comparative Example 1, the specular gloss of the surface protective layer 7 directly above the light absorbing portion 3 was measured at an incident angle of 85° using a micro-TRI-gloss manufactured by BYK.

[0123] [Difference in gloss] For each of the decorative sheets of Examples 1-7 and the decorative sheet of Comparative Example 1, after embossing, the specular gloss of the surface protective layer 7 directly above the portion where the light absorbing portion 3 was not formed was measured in the same manner as when measuring gloss, and the difference in gloss from the surface protective layer 7 directly above the light absorbing portion 3 was determined. The presence or absence of gloss matte was confirmed based on the difference in gloss.

[0124] [Gloss Matte Design] For each of the decorative sheets of Examples 1-7 and the decorative sheet of Comparative Example 1, the difference in gloss level and the state of the gloss matte effect were visually evaluated. The evaluation criteria were as follows: In this example, a grade of "good" or better was considered to be acceptable. ◎: The difference in gloss level is 3 or more, the gloss matte effect is stably expressed, and the gloss matte pattern is almost invisible from the surface protective layer side. ◯: The difference in gloss level is 3 or more, and the gloss matte effect is stably expressed, but the pattern for expressing the gloss matte is visible from the surface protection layer side. ×: Regardless of the visibility of the pattern for expressing gloss matte from the surface protective layer side, the difference in gloss level is less than 3, and the gloss matte effect is not fully expressed.

[0125] [Table 1]

[0126] 〔result〕 Although there are some differences in glossiness in the decorative sheets of Examples 1-7, the difference in glossiness between the areas with and without the patterned portion for producing a glossy matte finish is 3 or more, which satisfies the glossiness difference of 3 that is generally required for a glossy matte finish to be visible, and therefore it was confirmed that a sufficient glossy matte finish can be obtained.

[0127] In other words, it was confirmed that by providing a light-absorbing section 3 with an infrared transmittance of 60% or less at a wavelength of 2000 nm on the back surface of the colored thermoplastic resin layer or on the pattern layer, it is possible to achieve a sufficient gloss and matte appearance, and to obtain a decorative sheet with a texture similar to the surface texture of wood, stone, etc. used in building materials, and with excellent design properties.

[0128] <Second Example> Example 8 Thickness 55μm, density 0.95g / cm 3 A wood grain pattern was printed on one surface of the colored thermoplastic resin layer 2 made of a PE (polyethylene) layer using a urethane-based printing ink to form a pattern layer 5.

[0129] Next, PE (polyethylene) resin was extrusion laminated onto the surface of the colored thermoplastic resin layer 2 on which the pattern layer 5 was formed, to a thickness of 90 μm and a density of 0.95 g / cm 3 A transparent thermoplastic resin layer 6 made of the above was formed. The transparent thermoplastic resin layer 6 was formed by laminating it onto the pattern layer via an adhesive layer (not shown) made of adhesive resin (urethane adhesive).

[0130] Furthermore, on the transparent thermoplastic resin layer 6, a surface protection layer 7 containing an ultraviolet curable resin containing an acrylic resin composition as a main component was laminated. In addition, the other surface of the colored thermoplastic resin layer 2 (the surface opposite to the pattern layer 5) was printed with a pattern of black ink made of a urethane-based printing ink containing carbon black as an infrared absorbing material to form a light absorbing portion 3.

[0131] Furthermore, a primer layer 8 was formed on the colored thermoplastic resin layer 2 including the light-absorbing portion 3, to obtain a laminate. The light absorbing portion 3 had an infrared transmittance of 8% at a wavelength of 2000 nm. After forming the primer layer 8, the laminate was heated with an infrared heater as a post-embossing step, and then an embossing roll was pressed against the surface protective layer 7 to form embosses, thereby obtaining the decorative sheet of Example 1. The light irradiated by the infrared heater was short-wavelength-rich infrared light, i.e., infrared light with a high content of wavelength components in the range of 800 nm to 2500 nm, the power of which was stronger than the power of other wavelengths.

[0132] In addition, the temperature when heating using an infrared heater was changed, and three types of decorative sheets 1 with different temperatures during the embossing process were created as Example 1 under different conditions, where the temperature of the laminate during the embossing process was 125°C, 130°C, and 135°C.

[0133] Example 9 A decorative sheet 1 was obtained in the same manner as in Example 8, except that a PP (polypropylene) layer having a thickness of 55 μm was used as the colored thermoplastic resin layer 2. Example 10 A decorative sheet 1 was obtained in the same manner as in Example 8, except that the thickness of the transparent thermoplastic resin layer 6 was set to 15 μm. Example 11 A decorative sheet 1 was obtained in the same manner as in Example 8, except that the thickness of the transparent thermoplastic resin layer 6 was set to 20 μm.

[0134] Example 12 A decorative sheet 1 was obtained in the same manner as in Example 8, except that the thickness of the transparent thermoplastic resin layer 6 was set to 200 μm. Example 13 A decorative sheet 1 was obtained in the same manner as in Example 8, except that the thickness of the transparent thermoplastic resin layer 6 was set to 250 μm. Example 14 The thickness of the transparent thermoplastic resin layer 6 is set to 100 μm and the density is set to 0.85 g / cm 3 A decorative sheet 1 was obtained in the same manner as in Example 8, except that:

[0135] Example 15 The thickness of the transparent thermoplastic resin layer 6 is set to 100 μm and the density is set to 0.90 g / cm 3 A decorative sheet 1 was obtained in the same manner as in Example 8, except that: Example 16 The thickness of the transparent thermoplastic resin layer 6 is set to 100 μm and the density is set to 0.97 g / cm 3 A decorative sheet 1 was obtained in the same manner as in Example 8, except that: Example 17 The thickness of the transparent thermoplastic resin layer 6 is set to 100 μm and the density is set to 1.11 g / cm 3 A decorative sheet 1 was obtained in the same manner as in Example 8, except that:

[0136] (Comparative Example 2) The transparent thermoplastic resin layer 6 has a density of 0.91 g / cm 3 A decorative sheet 1 was obtained in the same manner as in Example 8, except that the PP resin used was the same as that used in Example 8. (Comparative Example 3) The colored thermoplastic resin layer 2 and the transparent thermoplastic resin layer 6 each have a density of 0.91 g / cm 3 A decorative sheet 1 was obtained in the same manner as in Example 8, except that the PP layer was used.

[0137] 〔evaluation〕 For each of the decorative sheets of Examples 8 to 17 and Comparative Examples 2 to 3, ten people were asked to visually evaluate whether the gloss matte design was clearly visible when the temperature of the laminate during embossing was 125°C, 130°C, or 135°C. The evaluation criteria are as follows: ◎: Eight or more people judged that the gloss matte design was clearly visible. Good: More than 6 people but less than 8 people judged that the gloss matte design was clearly visible. △: 4 or more but less than 6 people judged that the gloss matte design was clearly visible. ×: Three or fewer people judged that the gloss matte design was clearly visible. The evaluation results are shown in Table 2.

[0138] [Table 2]

[0139] As can be seen from Table 2, when the colored thermoplastic resin layer was formed of PE resin or PP resin and the transparent thermoplastic resin layer was formed of PE resin (Examples 8 to 17), the design was evident even when the temperature of the laminate during embossing was a relatively low 125°C, whereas when the transparent thermoplastic resin layer was formed of PP resin (Comparative Examples 2 and 3), the gloss matte design was not evident at 125°C. Furthermore, when the transparent thermoplastic resin layer was formed of PP resin and the temperature of the laminate during embossing was 135°C, the embossing was vague, and although the gloss matte design was evident, six to fewer than eight people judged it to be clearly evident.

[0140] On the other hand, when the transparent thermoplastic resin layer was formed from PE resin, if the thickness of the transparent thermoplastic resin layer was 15 μm, the embossing was vague because the transparent thermoplastic resin layer was too thin. Conversely, if the thickness of the transparent thermoplastic resin layer was 250 μm, the transparent thermoplastic resin layer was too thick to sufficiently conduct heat, resulting in a vague embossing. In both cases, the number of people who judged that the temperature gloss matte design was clearly apparent, although it was apparent regardless of the temperature during embossing, was between 6 and 8. However, when the thickness of the transparent thermoplastic resin layer was between 20 μm and 200 μm, more than 8 people judged that the embossing was clear and the gloss matte design was clearly apparent when the embossing temperature was 135°C.

[0141] 〔result〕 For the decorative sheets of Examples 8-17, although there was a difference in the evaluation when the embossing temperature was 135°C, at least six people judged that the gloss matte design was clearly visible at all temperatures of 125°C, 130°C, and 135°C. In other words, it was confirmed that a sufficient gloss matte design was obtained. In other words, it was confirmed that by using PE resin for the transparent thermoplastic resin layer and polyolefin resin for the colored thermoplastic resin layer, a sufficient gloss and matte design can be obtained regardless of the temperature during embossing.

[0142] The present invention can have the following configurations, for example. (1) a colored resin layer containing a polyolefin resin, a patterned layer, a transparent resin layer containing a polyethylene resin, and a surface protective layer laminated in this order on one surface of the colored resin layer; an area on the other surface of the colored resin layer, the area being arranged in synchronization with the pattern of the pattern layer, the area having a higher light absorption rate for infrared rays than light of other wavelengths, and including a predetermined material having a higher light absorption rate for infrared rays than the colored resin layer; an embossed portion formed in the surface protective layer at a position overlapping the region containing the predetermined material in a plan view, A decorative sheet characterized in that the region containing the predetermined material has an infrared transmittance of 60% or less at a wavelength of 2000 nm. (2) The film comprises a colored resin layer containing a polyolefin resin, a patterned layer, a transparent resin layer containing a polyethylene resin, and a surface protective layer, which are laminated in this order on one surface of the colored resin layer, the design layer has an area containing a predetermined material; the region containing the predetermined material has a higher light absorption rate for infrared rays than light of other wavelengths and a higher light absorption rate for infrared rays than the pattern layer, and has an infrared transmittance of 60% or less at a wavelength of 2000 nm; A decorative sheet characterized in that the surface protective layer has an embossed portion at a position overlapping the region containing the predetermined material in a plan view. (3) The decorative sheet according to (2) above, wherein the pattern of the pattern layer is formed in an area partially containing the predetermined material. (4) the pattern layer has a main pattern layer that forms a pattern and an area that contains the predetermined material, The decorative sheet according to (2) above, wherein the area containing the predetermined material is arranged on the main pattern layer in synchronization with the pattern. (5) The decorative sheet according to any one of (1) to (4) above, wherein the transparent resin layer has a thickness of 20 μm or more and 200 μm or less. (6) The transparent resin layer has a density of 0.90 g / cm 3 More than 0.97g / cm 3 A decorative sheet according to any one of (1) to (5) above, characterized in that: (7) The decorative sheet according to any one of (1) to (6) above, characterized in that the polyolefin resin is either a single resin or a mixture, copolymer, composite, or laminate of two or more of polyolefin resins such as polyethylene, polypropylene, polymethylpentene, polybutene, ethylene-propylene copolymer, ethylene-α-olefin copolymer, and propylene-α-olefin copolymer, or olefin copolymer resins such as ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, ethylene-(meth)acrylic acid (ester) copolymer, and ethylene-unsaturated carboxylic acid copolymer metal neutralized product (ionomer). (8) The decorative sheet according to any one of (1) to (7) above, characterized in that the predetermined material is at least one inorganic material selected from the group consisting of carbon black, tin-doped indium oxide, antimony-doped tin oxide, lanthanum hexaboride, and cesium-doped tungsten oxide. (9) A substrate; and a decorative sheet according to any one of (1) to (8) above, provided on at least one surface of the substrate, The decorative member is characterized in that the substrate is any one of a wood substrate, a resin substrate, a non-flammable substrate, and a metal substrate. [Explanation of symbols]

[0143] 1, 11, 12 Decorative sheets 2 Colored thermoplastic resin layer 3, 31, 32 Light absorbing part 5, 51, 52 Picture layers 6 Transparent thermoplastic resin layer 7 Surface protective layer 7a Embossed part 8 Primer layer 8a, 5c pattern layer 10 Decorative materials

Claims

1. a colored resin layer containing a polyolefin resin, a pattern layer, a transparent resin layer containing a polyethylene resin, and a surface protective layer laminated in this order on one surface of the colored resin layer; an area on the other surface of the colored resin layer, the area being arranged in synchronization with the pattern of the pattern layer, the area having a higher light absorption rate for infrared rays than light of other wavelengths, and including a predetermined material having a higher light absorption rate for infrared rays than the colored resin layer; an embossed portion formed in the surface protective layer at a position overlapping the region containing the predetermined material in a plan view, A decorative sheet characterized in that the region containing the predetermined material has an infrared transmittance of 60% or less at a wavelength of 2000 nm.

2. The film comprises a colored resin layer containing a polyolefin resin, a patterned layer, a transparent resin layer containing a polyethylene resin, and a surface protective layer, which are laminated in this order on one surface of the colored resin layer, the design layer has an area containing a predetermined material; the region containing the predetermined material has a higher light absorption rate for infrared rays than light of other wavelengths and a higher light absorption rate for infrared rays than the pattern layer, and has an infrared transmittance of 60% or less at a wavelength of 2000 nm; A decorative sheet characterized in that the surface protective layer has an embossed portion at a position overlapping the region containing the predetermined material in a plan view.

3. 3. The decorative sheet according to claim 2, wherein the pattern of said pattern layer is formed in an area partially containing said predetermined material.

4. the pattern layer has a main pattern layer that forms a pattern and an area that contains the predetermined material, 3. The decorative sheet according to claim 2, wherein the area containing the predetermined material is disposed on the main pattern layer in synchronization with the pattern.

5. 3. The decorative sheet according to claim 1, wherein the transparent resin layer has a thickness of 20 μm or more and 200 μm or less.

6. The transparent resin layer has a density of 0.90 g / cm ３ 0.97g / cm or more ３ 3. The decorative sheet according to claim 1, wherein the following is true:

7. The decorative sheet according to claim 1 or 2, wherein the polyolefin resin is selected from the group consisting of polyolefin resins such as polyethylene, polypropylene, polymethylpentene, polybutene, ethylene-propylene copolymer, ethylene-α-olefin copolymer, and propylene-α-olefin copolymer, and olefin copolymer resins such as ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, ethylene-(meth)acrylic acid (ester) copolymer, and ethylene-unsaturated carboxylic acid copolymer metal neutralized product (ionomer), either alone or in the form of a mixture, copolymer, composite, or laminate of two or more thereof.

8. 3. The decorative sheet according to claim 1, wherein the predetermined material is at least one inorganic material selected from the group consisting of carbon black, tin-doped indium oxide, antimony-doped tin oxide, lanthanum hexaboride, and cesium-doped tungsten oxide.

9. A substrate; The decorative sheet according to claim 1 or 2 is provided on at least one surface of the substrate, The decorative member is characterized in that the substrate is any one of a wood substrate, a resin substrate, a non-flammable substrate, and a metal substrate.

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