JP2008080650A - Decorative sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an improved decorative sheet and a decorative material using the same which exhibit a material feeling (for example, natural wood surface feeling, real wood feeling) near to natural material, appearance of solidity, and coating feeling (thick coating feeling with coating material) or the like. <P>SOLUTION: The decorative sheet has a brilliant color layer, a picture pattern layer, a transparent adhesive layer, a transparent resin layer and a transparent surface protection layer in the order on a substrate sheet which can be used as the decorative material by adhering to the material to be adhered, and at least the brilliant color layer has a shaped projection and recessed pattern by embossing. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a decorative sheet.

  The decorative sheet is used for, for example, an application in which a decorative material is decorated on a wooden substrate.

  As a decorative sheet, for example, a substrate sheet in which a pattern layer, a transparent resin layer, and a transparent surface protective layer are laminated is known. Moreover, what laminated | stacked the synthetic resin backer layer on the back surface of a base material sheet is also known (patent document 1 etc.). Here, the backer layer is a synthetic resin layer having a relatively large thickness that alleviates the influence of surface irregularities such as a wooden base material and imparts cushioning performance to a decorative sheet (particularly a decorative sheet for flooring).

  Since the decorative sheet generally has a flat pattern layer, it has a drawback that it is difficult to present a material feeling (for example, a wood texture), a three-dimensional feeling, and the like close to natural products. On the other hand, a decorative board in which a veneer is attached to a wooden base material and the veneer is coated is easy to obtain a material feeling, a three-dimensional feeling, a painted feeling, etc., especially when the coating is thickened. It is difficult to obtain a feeling of painting. On the other hand, there is also an attempt to give a texture and a three-dimensional feeling by imparting irregularities to the pattern layer, but since the visibility of the irregularity is lowered at the stage of laminating a transparent resin layer on the pattern layer, A feeling and a three-dimensional feeling cannot be obtained sufficiently.

  In view of the recent increase in environmental awareness and demand for cost reduction, it is preferable to use a decorative sheet rather than a veneer. The use of the decorative sheet is also suitable for mass production of a homogeneous product.

Accordingly, there is a demand for the development of an improved decorative sheet that presents a material feeling close to natural products, a three-dimensional feeling, a feeling of painting, and the like.
JP 2003-239517 A

  The main object of the present invention is to provide an improved decorative sheet and a decorative material using the same, which exhibit a material feeling close to a natural product, a three-dimensional effect, a feeling of painting, and the like.

  As a result of intensive studies, the inventor has found that the above object can be achieved when an embossed glittering colored layer is provided in addition to the pattern layer, and the present invention has been completed.

That is, the present invention relates to the following decorative sheet and a decorative material using the same.
1. On the base sheet, it has a glittering colored layer, a pattern layer, a transparent adhesive layer, a transparent resin layer, and a transparent surface protective layer in this order, and at least the glittering colored layer was shaped by embossing A decorative sheet having an uneven pattern.
2. Item 2. The decorative sheet according to Item 1, wherein the concavo-convex pattern has a height difference between the concave and convex portions in the range of 5 to 100 µm.
3. Item 3. The decorative sheet according to Item 1 or 2, wherein the design pattern drawn by the design pattern layer and the concavo-convex pattern formed by embossing are synchronized.
4). Item 4. The decorative sheet according to any one of Items 1 to 3, wherein the transparent resin layer comprises two layers of an upper transparent resin layer and a lower transparent resin layer.
5. Item 5. The decorative sheet according to any one of Items 1 to 4, wherein a synthetic resin layer having a thickness of 100 μm or more is further laminated on the back surface of the base sheet. Item 6. The decorative sheet according to any one of Items 1 to 5, wherein the embossing is performed from the front surface of the pattern layer so that the uneven pattern reaches the glittering colored layer.
7). Item 6. The decorative sheet according to Item 4 or 5, wherein the embossing is applied from the front surface of the lower transparent resin layer so that the concavo-convex pattern reaches the glittering colored layer.
8). Item 6. The decorative sheet according to any one of Items 1 to 5, wherein the embossing is performed from the back surface of the base sheet so that the uneven pattern reaches the glittering colored layer.
9. A cosmetic material comprising the decorative sheet according to any one of Items 1 to 8 and an adherend.

Hereinafter, the present invention will be described in detail.

The decorative sheet of the present invention has a glittering colored layer, a pattern pattern layer, a transparent adhesive layer, a transparent resin layer, and a transparent surface protective layer in this order on the base sheet, and at least the glittering coloring. The layer is characterized by having an uneven pattern shaped by embossing.

  The decorative sheet having the above characteristics has a glittering colored layer, and the glittering colored layer has an uneven pattern formed by embossing, so that the texture of the pattern formed thereon is textured. And a three-dimensional feeling. Even after the transparent resin layer is laminated on the design pattern layer, the visibility of the unevenness is hardly lost due to diffused reflection of light by the glittering colored layer, so that the texture and stereoscopic effect of the design pattern are effectively maintained. That is, the decorative sheet has a material feeling (for example, a natural bark feeling, a real feeling) and a three-dimensional feeling close to natural products. In addition, a coating feeling (a feeling of thick coating) can be obtained by the synergistic effect of the glittering colored layer, the pattern pattern layer, and the transparent resin layer.

  Hereinafter, each layer will be described.

(Substrate sheet)
Although it does not limit as a base material sheet, the base material sheet which contains polyolefin resin as a resin component is preferable. Essentially, a sheet made of polyolefin resin is used.

  It does not specifically limit as polyolefin resin, What is normally used in the field | area of a decorative sheet can be used. For example, polyethylene, polypropylene, polybutene, polymethylpentene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-propylene-butene copolymer, polyolefin-based thermoplastic elastomer, etc. Is mentioned. Among these, polypropylene, polyolefin-based thermoplastic elastomers and the like are particularly preferable.

  A homopolymer or copolymer having polypropylene as a main component is also preferable, for example, a homopolypropylene resin, a random polypropylene resin, a block polypropylene resin, and a polypropylene crystal part and having 2 to 20 carbon atoms other than propylene. -Olefins. In addition, a propylene-α-olefin copolymer containing 15 mol% or more of a comonomer of ethylene, butene-1,4-methylpentene-1, hexene-1, or octene-1 is also preferable.

  The polyolefin-based thermoplastic elastomer is preferably a mixture of isotactic polypropylene in the hard segment and atactic polypropylene in the soft segment in a weight ratio of 80:20.

  The polyolefin resin may be formed into a film by, for example, a calendar method, an inflation method, a T-die extrusion method, or the like.

  The thickness of the base sheet is not particularly limited and can be set according to the product characteristics, but is usually 40 to 150 μm, preferably about 50 to 100 μm.

  An additive may be mix | blended with a base material sheet as needed. Examples of the additive include a filler such as calcium carbonate and clay, a flame retardant such as magnesium hydroxide, an antioxidant, a lubricant, a foaming agent, and a colorant (see below). The blending amount of the additive can be appropriately set according to the product characteristics.

  It does not specifically limit as a coloring agent, Well-known coloring agents, such as a pigment and dye, can be used. For example, inorganic pigments such as titanium white, zinc white, petal, vermilion, ultramarine blue, cobalt blue, titanium yellow, yellow lead, carbon black; isoindolinone, Hansa Yellow A, quinacridone, permanent red 4R, phthalocyanine blue, indanthrene Examples thereof include organic pigments (including dyes) such as blue RS and aniline black; metal pigments such as aluminum and brass; pearlescent pigments made of foil powder such as titanium dioxide-coated mica and basic lead carbonate.

  One or both surfaces of the base sheet may be subjected to surface treatment such as corona discharge treatment, ozone treatment, plasma treatment, ionizing radiation treatment, dichromic acid treatment, etc., as necessary. For example, when the corona discharge treatment is performed, the surface tension of the substrate sheet surface may be 30 dyne or more, preferably 40 dyne or more. The surface treatment may be performed according to a conventional method for each treatment.

  A primer layer (for example, a back primer layer for facilitating adhesion of a backer layer, a primer layer for facilitating formation of a glittering colored layer) is provided on one side or both sides of the base sheet, as necessary. It may be provided.

  A primer layer can be formed by apply | coating a well-known primer agent to the single side | surface or both surfaces of a base material sheet. Examples of the primer agent include a urethane resin primer agent made of acrylic modified urethane resin, a primer agent made of urethane-cellulose resin (for example, a resin made by adding hexamethylene diisocyanate to a mixture of urethane and nitrified cotton), and the like. Is mentioned.

Although the application amount of the primer agent is not particularly limited, it is usually 0.1 to 100 g / m ² , preferably about 0.1 to 50 g / m ² .

  Although the thickness of a primer layer is not specifically limited, Usually, 0.01-10 micrometers, Preferably it is about 0.1-1 micrometer.

(Backer layer)
A thick synthetic resin layer having a thickness of 100 μm or more may be laminated on the back surface of the base sheet as a backer layer. By laminating such a backer layer, the effect of unevenness inevitably present on the surface of the adherend is alleviated when the decorative sheet is attached to the adherend (especially woody plywood) as a decorative material. be able to. In particular, when used as a decorative sheet for floors, the backer layer also serves as a layer that imparts cushioning properties to the decorative sheet.

  The synthetic resin for forming the backer layer is not limited, but a thermoplastic resin is preferable. For example, polypropylene, ethylene-vinyl alcohol copolymer, polymethylene, polymethylpentene, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polyarylate , Polyethylene naphthalate-isophthalate copolymer, polyimide, polystyrene, polyamide, ABS and the like.

  The backer layer is formed, for example, from the thermoplastic resin by a calendar method, an inflation method, a T-die extrusion method, or the like. An existing film may be used.

  When the backer layer is formed by extrusion molding of a molten resin, for example, extrusion molding using a T die can be suitably used. When the synthetic resin backer layer is a multilayer, for example, a multi-manifold type or feed block type T-die may be used to perform multilayer simultaneous extrusion. When making a backer layer into a multilayer, it is preferable to make the layer nearest to the back surface of a base material sheet into an easily bonding resin layer, for example. Such an improvement can be achieved by, for example, blending a known thermoplastic elastomer into a layer that forms an easily adhesive resin layer. The type of the thermoplastic elastomer is not particularly limited, and can be widely selected from those that have high compatibility with the resin constituting the backer layer and can contribute to improvement in adhesion to the base sheet.

  In addition, when the backer layer formed by extrusion molding is difficult to adhere to the back surface of the base material sheet only by thermal fusion, an adhesive layer may be interposed as necessary to enhance the adhesion.

  Although the thickness of a backer layer should just be 100 micrometers or more, about 150-600 micrometers is preferable and about 250-400 micrometers is more preferable. The synthetic resin backer layer preferably has a tensile elastic modulus of 1000 MPa or more, and preferably 1500 MPa or more. The upper limit of the tensile elastic modulus is not particularly limited, but may be about 2500 MPa.

(Bright colored layer)
A glittering colored layer is formed on the base sheet (front surface). Such a glittering colored layer is, for example, a colored ink or coating obtained by dissolving (or dispersing) a known glittering colorant (such as a glittering pigment) in a solvent (or dispersion medium) together with a binder resin. What is necessary is just to form by the printing method etc. which used the agent.

Examples of the bright colorant include the following.
(I) Pearl pigment: Specifically, the inner part of a shell or a pearl is crushed; mica; mica fine particles baked with TiO ₂ or iron oxide,
(B) Metal powder: Specifically, copper, aluminum, brass, bronze, gold, silver and other fine particles (preferably 1 to 120 μm),
(C) Debris of the deposited plastic film: Specifically, a polyethylene terephthalate film obtained by vapor deposition and pulverization of the above metal (usually aluminum) (silver powder); (Golden powder).

  Examples of the binder resin include acrylic resins, styrene resins, polyester resins, urethane resins, chlorinated polyolefin resins, vinyl chloride-vinyl acetate copolymer resins, polyvinyl butyral resins, alkyd resins, petroleum Resin, ketone resin, epoxy resin, melamine resin, fluorine resin, silicone resin, fiber derivative, rubber resin and the like. These resins can be used alone or in admixture of two or more.

  Examples of the solvent (or dispersion medium) include petroleum organic solvents such as hexane, heptane, octane, toluene, xylene, ethylbenzene, cyclohexane, and methylcyclohexane; ethyl acetate, butyl acetate, 2-methoxyethyl acetate, and acetic acid-2 -Ester-based organic solvents such as ethoxyethyl; alcohol-based organic solvents such as methyl alcohol, ethyl alcohol, normal propyl alcohol, isopropyl alcohol, isobutyl alcohol, ethylene glycol, propylene glycol; ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone Organic solvents; ether organic solvents such as diethyl ether, dioxane, tetrahydrofuran; dichloromethane, carbon tetrachloride, trichloroethylene, tetrachloroethylene, etc. Chlorinated organic solvents; inorganic solvents such as water. These solvents (or dispersion media) can be used alone or in admixture of two or more.

  The bright colored layer may be provided on the base sheet in a solid form. For example, it is formed by various coating methods such as a roll coating method, a knife coating method, an air knife coating method, a die coating method, a lip coating method, a comma coating method, a kiss coating method, a flow coating method, and a dip coating method. The thickness of the glittering colored layer is not limited, but the layer thickness at the time of coating is about 1 to 50 μm, and the layer thickness after drying is about 0.1 to 20 μm.

  The glittering colored layer has a concavo-convex pattern formed by embossing. By having such a concavo-convex pattern, the design pattern drawn by the design pattern layer, which will be described later, gives the decorative sheet a material feeling close to a natural product, a three-dimensional effect, a feeling of painting, and the like.

  In the concavo-convex pattern formed by embossing, the height difference (height difference) between the concave and convex portions is preferably about 5 to 100 μm, more preferably about 20 to 50 μm. When the uneven pattern having such a height difference is formed, the glittering colored layer easily causes irregular reflection of light. Moreover, it is preferable that the concavo-convex pattern is provided so as to be synchronized with the pattern pattern exhibited by the pattern pattern layer.

  The embossing process should just be provided in the glittering colored layer in the decorative sheet. In other words, in the process of manufacturing the decorative sheet, it is only necessary to emboss the glitter colored layer, but by embossing it through another layer, the uneven color pattern by embossing is indirectly formed on the glitter colored layer. It may be shaped. For example, embossing may be performed from the front surface of the pattern layer after providing a pattern layer to be described later on the glittering colored layer. Moreover, the embossing may be given from the back surface of the base material sheet. Further, after forming a transparent resin layer (especially the lower transparent resin layer) on the pattern layer through a transparent adhesive layer described later, embossing is performed from the front surface of the resin layer. Also good.

  The embossing method is not particularly limited, and for example, a preferable method is to heat and soften the front surface of the pattern layer and pressurize and shape with an emboss plate and then cool. For embossing, a known single-wafer or rotary embossing machine is used. Examples of the concavo-convex shape include a wood grain plate conduit groove, a stone plate surface unevenness (such as granite cleaved surface), a cloth surface texture, a satin texture, a grain, a hairline, a ridge line, and the like.

(Pattern pattern layer)
A pattern layer is formed on the glittering colored layer.

  The design pattern layer imparts design properties with a desired design to the decorative sheet, and the type of design is not particularly limited. Examples thereof include a wood grain pattern, a stone pattern, a grain pattern, a tiled pattern, a brickwork pattern, a cloth pattern, a leather pattern, a geometric figure, a character, a symbol, and an abstract pattern.

  The method for forming the pattern layer is not particularly limited. For example, a colored ink or coating obtained by dissolving (or dispersing) a known colorant (dye or pigment) in a solvent (or dispersion medium) together with a binder resin. What is necessary is just to form by the printing method etc. which used the agent etc.

  Examples of colorants include inorganic pigments such as carbon black, titanium white, zinc white, dial, bitumen, cadmium red; azo pigments, lake pigments, anthraquinone pigments, quinacridone pigments, phthalocyanine pigments, isoindolinone pigments, dioxazine pigments. Organic pigments such as aluminum powder, metal powder pigments such as bronze powder, pearlescent pigments such as titanium oxide-coated mica and bismuth oxide chloride; fluorescent pigments; These colorants can be used alone or in admixture of two or more. These colorants may further contain fillers such as silica, extender pigments such as organic beads, neutralizing agents, surfactants and the like.

  The description of the binder resin and the solvent (or dispersion medium) is the same as described above.

  Examples of the printing method used for forming the pattern layer include a gravure printing method, an offset printing method, a screen printing method, a flexographic printing method, an electrostatic printing method, and an inkjet printing method. In addition, the hand-drawn method, the ink-sink method, the photographic method, the transfer method, the laser beam drawing method, the electron beam drawing method, the metal partial evaporation method, the etching method, etc. may be used or combined with other forming methods. Good.

  The thickness of the pattern layer is not particularly limited and can be set as appropriate according to product characteristics. The layer thickness at the time of coating is about 1 to 15 μm, and the layer thickness after drying is about 0.1 to 10 μm.

(Transparent adhesive layer)
A transparent adhesive layer is formed on the pattern layer. The transparent adhesive layer is not particularly limited as long as it is transparent, and includes any of transparent and colorless, colored and translucent. The transparent adhesive layer is formed in order to bond the pattern layer and the transparent resin layer.

  It does not specifically limit as an adhesive agent, A well-known adhesive agent can be used in the field of a decorative sheet.

  Examples of the adhesive known in the field of decorative sheets include thermoplastic resins such as polyamide resin, acrylic resin and vinyl acetate resin, and curable resins such as thermosetting urethane resin. Further, a two-component curable polyurethane resin or polyester resin using isocyanate as a curing agent can also be applied.

  The adhesive layer can be formed, for example, by applying an adhesive on the pattern layer, applying a coating agent (adhesive) that constitutes the transparent resin layer, and drying and curing. Conditions such as drying temperature and drying time are not particularly limited, and may be set as appropriate according to the type of adhesive. The method of applying the adhesive is not particularly limited. For example, roll coating, curtain flow coating, wire bar coating, reverse coating, gravure coating, gravure reverse coating, air knife coating, kiss coating, blade coating, smooth coating, comma coating, etc. The method can be adopted.

  Although the thickness of an adhesive bond layer is not specifically limited, The thickness after drying is 0.1-30 micrometers, Preferably it is about 1-20 micrometers.

(Transparent resin layer)
A transparent resin layer having a thickness of 80 to 500 μm is formed on the transparent adhesive layer. If it is the range of the said thickness (preferably 150-400 micrometers, More preferably, 200-400 micrometers), a decorative sheet is easy to ensure the outstanding scratch resistance. The transparent resin layer includes any of colorless and transparent, colored and transparent, and translucent as long as it is transparent.

  The resin component contained in the transparent resin layer is not limited, but is preferably a thermoplastic resin, and particularly preferably polypropylene.

  The transparent resin layer preferably has a tensile elastic modulus of 600 MPa or more, and preferably 1000 MPa or more. The upper limit of the tensile elastic modulus is not particularly limited, but may be about 2000 MPa.

  The transparent resin layer is formed of, for example, a polypropylene resin by a calendar method, an inflation method, a T-die extrusion method, or the like. An existing film may be used.

  The transparent resin layer may be a single layer or a laminate of two or more layers. For example, when it consists of two layers, it is set as the laminated body of an upper stage transparent resin layer and a lower stage transparent resin layer. At this time, as described above, the embossing may be performed from the front surface of the lower transparent resin layer after the lower transparent resin layer is laminated (before the upper transparent resin layer is laminated). In the case of a two-layer structure, the thickness of the lower layer is preferably about 30 to 100 μm, and the upper thickness is preferably about 30 to 400 μm.

  On the surface of the transparent resin layer, on which the transparent surface protective layer described later is formed, the surface of corona discharge treatment, ozone treatment, plasma treatment, ionizing radiation treatment, dichromate treatment, etc., as necessary Processing may be performed. The surface treatment may be performed according to a conventional method for each treatment.

  Moreover, you may provide a primer layer (primer layer for making formation of a surface protective layer easy) on the surface of a transparent resin layer as needed. The material and thickness of the primer layer are the same as those of the primer layer provided on the base sheet.

(Transparent surface protective layer)
A transparent surface protective layer is formed on the transparent resin layer. The transparent surface protective layer is not limited, but preferably contains an ionizing radiation curable resin or a two-component curable urethane resin as a resin component. Substantially those formed from these resins are preferred. When forming a transparent surface protective layer with ionizing radiation curable resin or two-component curable urethane resin, it is easy to improve the abrasion resistance, impact resistance, contamination resistance, scratch resistance, weather resistance, etc. of the decorative sheet. .

  The ionizing radiation curable resin is not particularly limited, and prepolymers (including oligomers) and / or monomers containing radically polymerizable double bonds capable of undergoing a crosslinking reaction upon irradiation with ionizing radiation such as ultraviolet rays and electron beams. A transparent resin containing as a main component can be used. These prepolymers or monomers can be used alone or in combination. The curing reaction is usually a cross-linking curing reaction.

  Specifically, as the prepolymer or monomer, a compound having in the molecule a radically polymerizable unsaturated group such as a (meth) acryloyl group or (meth) acryloyloxy group, or a cationically polymerizable functional group such as an epoxy group. Is mentioned. Further, a polyene / thiol prepolymer based on a combination of polyene and polythiol is also preferable. Here, the (meth) acryloyl group means an acryloyl group or a methacryloyl group.

  Examples of the prepolymer having a radically polymerizable unsaturated group include polyester (meth) acrylate, urethane (meth) acrylate, epoxy (meth) acrylate, melamine (meth) acrylate, triazine (meth) acrylate, and silicone (meth) acrylate. Etc. These molecular weights are usually preferably about 250 to 100,000.

  As a monomer which has a radically polymerizable unsaturated group, methyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, phenoxyethyl (meth) acrylate etc. are mentioned as a monofunctional monomer, for example. Examples of the polyfunctional monomer include diethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, trimethylolpropane ethylene oxide tri (meth) acrylate, dipentaerythritol tetra ( And (meth) acrylate, dipentaerythritol penta (meth) acrylate, and dipentaerythritol hexa (meth) acrylate.

  Examples of the prepolymer having a cationic polymerizable functional group include prepolymers of epoxy resins such as bisphenol type epoxy resins and novolak type epoxy compounds, and vinyl ether type resins such as fatty acid type vinyl ethers and aromatic vinyl ethers. Examples of the thiol include polythiols such as trimethylolpropane trithioglycolate and pentaerythritol tetrathioglycolate. Examples of the polyene include those in which allyl alcohol is added to both ends of polyurethane by diol and diisocyanate.

  As the ionizing radiation used for curing the ionizing radiation curable resin, electromagnetic waves or charged particles having energy capable of causing a curing reaction of molecules in the ionizing radiation curable resin (composition) are used. Usually, ultraviolet rays or electron beams may be used, but visible light, X-rays, ion rays, or the like may be used.

  As the ultraviolet light source, for example, a light source such as an ultra-high pressure mercury lamp, a high pressure mercury lamp, a low pressure mercury lamp, a carbon arc lamp, a black light, a metal halide lamp can be used. As a wavelength of ultraviolet rays, 190 to 380 nm is usually preferable.

  As the electron beam source, for example, various electron beam accelerators such as a cockcroft Walton type, a bandegraft type, a resonant transformer type, an insulated core transformer type, a linear type, a dynamitron type, and a high frequency type can be used. Among them, those capable of irradiating electrons having energy of 100 to 1000 keV, preferably 100 to 300 keV are preferable.

  The two-component curable urethane resin is not particularly limited. Among them, a polyol component (acrylic polyol, polyester polyol, polyether polyol, epoxy polyol, etc.) having an OH group as a main component and an isocyanate component (tolylene diene) which is a curing agent component. Isocyanate, hexamethylene diisocyanate, metaxylene diisocyanate and the like) can be used.

  The transparent surface protective layer may contain a plasticizer, a stabilizer, a filler, a dispersant, a colorant such as a dye or a pigment, a solvent, or the like, if necessary.

  For example, the transparent surface protective layer is formed by applying an ionizing radiation curable resin or a two-component curable urethane resin on a transparent polypropylene resin layer by a known coating method such as gravure coating or roll coating, and then applying the resin. It can be formed by curing. In the case of an ionizing radiation curable resin, the resin is cured by electron beam irradiation.

  The thickness of the transparent surface protective layer is not particularly limited and can be appropriately set according to the properties of the final product, but is usually about 0.1 to 50 μm, preferably about 1 to 20 μm.

  An uneven pattern by embossing may be formed on the front surface of the transparent surface protective layer. This embossing is different from the embossing reaching the glittering colored layer. That is, it is a concavo-convex pattern applied as a design on the surface of the decorative sheet. The kind of the concavo-convex pattern is the same as described above, and the concavo-convex pattern is preferably formed in synchronism with the pattern.

Cosmetic Material The decorative sheet of the present invention becomes a cosmetic material by bonding with various adherends. The material of the adherend is not particularly limited, and examples thereof include inorganic non-metallic materials, metallic materials, wood materials, and plastic materials.

  Specifically, in inorganic non-metallic systems, for example, papermaking cement, extruded cement, slag cement, ALC (lightweight cellular concrete), GRC (glass fiber reinforced concrete), pulp cement, wood chip cement, asbestos cement, calcium oxalate, Non-ceramic ceramic materials such as gypsum and gypsum slag, ceramic materials such as earthenware, ceramics, porcelain, setware, glass, and glazing.

  In a metal system, metal materials (metal steel plate), such as iron, aluminum, and copper, are mentioned, for example.

  In the wood system, for example, a single board, plywood, particle board, fiber board, laminated timber and the like made of cedar, straw, firewood, lauan, teak and the like can be mentioned.

  In the plastic system, for example, resin materials such as polypropylene, ABS resin, and phenol resin can be used.

  The shape of such an adherend is not particularly limited and can be appropriately set according to the application.

  The decorative sheet of the present invention has a glittering colored layer, and the glittering colored layer has a concavo-convex pattern formed by embossing. A three-dimensional feeling is given. Even after the transparent resin layer is laminated on the design pattern layer, the visibility of the unevenness is hardly lost due to diffused reflection of light by the glittering colored layer, so that the texture and stereoscopic effect of the design pattern are effectively maintained. That is, the decorative sheet has a material feeling (for example, a natural bark feeling, a real feeling) and a three-dimensional feeling close to natural products. In addition, a coating feeling (a feeling of thick coating) can be obtained by the synergistic effect of the glittering colored layer, the pattern pattern layer, and the transparent resin layer.

  Experimental examples will be shown below to describe the present invention more specifically.

Example 1
(Production of decorative sheet)
A colored polypropylene (base material sheet) having a thickness of 0.06 mm was prepared.

  A glossy colored layer having a thickness of 2 μm was formed by solidly applying an ink containing a pearl pigment (manufactured by Showa Ink Industries, Ltd.) on the front surface of the base sheet. The particle diameter of the pearl pigment was in the range of 10 to 50 μm, and the content of the pearl pigment in the ink was about 15% by weight.

  Next, a bark pattern pattern layer (2 μm) was formed on the glittering colored layer by printing.

  Next, a 0.06 mm thick transparent polypropylene resin film (lower transparent resin layer) was bonded onto the pattern layer with a urethane dry laminate adhesive. The thickness of the transparent adhesive layer was 3 μm.

  Next, a concavo-convex pattern was provided by embossing from above the lower transparent resin layer so that the concavo-convex height difference of the glittering colored layer was 40 μm.

  Next, a transparent polypropylene resin layer (upper transparent resin layer) having a thickness of 0.25 mm was extruded and simultaneously laminated.

Next, an electron beam curable transparent surface protective layer (15 μm) was formed thereon.
(Production of cosmetic materials)
A 12 mm lauan plywood was stuck on the back surface of the prepared decorative sheet to prepare a decorative material. A urethane-modified ethylene-vinyl acetate emulsion adhesive (9 g / scale ² wet) was used for the attachment.

Example 2
A cosmetic material was prepared in the same manner as in Example 1 except that the embossing was performed from the back surface of the base material sheet (the difference in level of the unevenness of the glittering colored layer was 40 μm).

Comparative Example 1
A cosmetic material was produced in the same manner as in Example 1 except that the glitter colored layer was not provided with unevenness.

Comparative Example 2
A cosmetic material was produced in the same manner as in Example 1 except that the glittering colored layer was not formed.

Test example 1
The bark feeling and paint feeling of the cosmetic materials produced in the examples and comparative examples were evaluated by visual observation.

The evaluation criteria were as follows. The results are shown in Table 1 below.
<Skin texture>
○: When the decorative board angle is changed, unevenness and shimmering movement are observed, such as a main wall. ×: When the decorative board angle is changed, unevenness and shimmering movement is recognized, such as a main board. No <painting feeling>
○: Depth (thickness) as when thickly applied is recognized ×: Depth (thickness) as when thickly applied is recognized

Claims (9)

  On the base sheet, it has a glittering colored layer, a pattern layer, a transparent adhesive layer, a transparent resin layer, and a transparent surface protective layer in this order, and at least the glittering colored layer was shaped by embossing A decorative sheet having an uneven pattern.   2. The decorative sheet according to claim 1, wherein the uneven pattern has a height difference of 5 to 100 μm between the concave portion and the convex portion.   The decorative sheet according to claim 1 or 2, wherein the pattern pattern drawn by the pattern pattern layer and the uneven pattern formed by embossing are synchronized.   The decorative sheet according to any one of claims 1 to 3, wherein the transparent resin layer comprises two layers of an upper transparent resin layer and a lower transparent resin layer.   The decorative sheet according to any one of claims 1 to 4, wherein a synthetic resin layer having a thickness of 100 µm or more is further laminated on the back surface of the base sheet.   The decorative sheet according to any one of claims 1 to 5, wherein the embossing is applied from the front surface of the pattern layer so that the concavo-convex pattern reaches the glittering colored layer.   The decorative sheet according to claim 4 or 5, wherein the embossing is applied from the front surface of the lower transparent resin layer so that the concavo-convex pattern reaches the glittering colored layer.   The embossing is a decorative sheet according to any one of claims 1 to 5, wherein the embossing is applied from the back surface of the base sheet so that the uneven pattern reaches the glittering colored layer.   A decorative material formed by adhering the decorative sheet according to any one of claims 1 to 8 and an adherend.