JP2017144599A - Decorative material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative material capable of reducing frictional heat even when decorative sheets obtaining wood skin feeling and hand touch feeling are superimposed in face to face while suppressing warpage.SOLUTION: In a decorative material, a decorative sheet is provided on one surface of a wooden base material and a moistureproof film 3 is provided on the other surface. The wooden base material is a lauan substitution material. The decorative sheet has a plurality of recesses on the surface and then has a plurality of projected parts having a relative difference of elevation in a range of 50 μm or more and 150 μm or less. A plurality of recessed parts having a difference of elevation in a range of 5 μm or more and 30 μm or less exist on the upper surface of the projected parts. A ratio of an area occupied by the plurality of recesses to the surface of the decorative sheet is 40% or more and 50% or less in top view and a ratio of an area occupied by the recessed parts to the upper surface of the projected parts is 40% or more and 50% or less in top view.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a decorative material used for other uses for floors, and more particularly to a decorative material considering the warpage and tactile properties of the decorative material itself.

Cosmetic materials used for indoor joinery and floors are configured, for example, by attaching a decorative sheet on a wooden base material. As the wooden base material, there is a wooden base material (for example, hardwood lauan plywood) obtained from a good quality raw wood, and it is possible to express a high-class feeling due to natural wood.
However, raw wood is difficult to obtain due to timber cutting restrictions, and there is a shortage of materials. This problem is particularly acute for hardwoods such as Lauan. Therefore, the development of a wood base material that can be used in place of the Lauan plywood is being promoted. Examples of the Lawan alternative material include softwood plywood, wood board obtained by molding and solidifying wood fibers or wood pieces separated from wood-based waste wood with an adhesive, and early-wood plywood made of early-wood.

However, these lauan substitute materials have a problem that the dimensional change amount per 1% moisture content change is larger than that of the lauan plywood, and the dimensional change is easy according to the change of the surrounding environment. Specifically, the amount of dimensional change per 1% moisture content of Lauan plywood is 0.015 to 0.02%, but about 0.045% for MDF and PB, and 0 for softwood plywood (for example, Radiata Pine). It is about 0.025%. For this reason, the Lawan alternative material has a characteristic that warp and bend (the right angle of the floor surface shifts) easily occur due to changes in humidity.
In order to improve the above problem, it has been proposed to laminate a moisture-proof film on the other surface of the Lawan alternative material (for example, Patent Documents 1 to 3). However, the moisture-proof film described in Patent Documents 1 to 3 has a moisture permeability of about 20 g / m ² · day at most, and its performance is insufficient to prevent warping and bending of the Lauan alternative material. In particular, in recent years, a decorative sheet having a low moisture permeability (2 g / m ² · day or less) is often laminated on one surface of the Lawan alternative material, and therefore the moisture permeability of the other surface is equal to or greater than that of one surface. There is a need to reduce humidity.

In this way, even when a lauan substitute material having a dimensional change per 1% moisture content change larger than 0.02% is used as a wooden base material and a decorative sheet with low moisture permeability is laminated on one side, Development of a decorative material for floors in which the occurrence of warping and curving is suppressed is desired.
On the other hand, with respect to a decorative sheet to be attached to a wooden substrate, conventionally, a so-called embossed plate is used to shape unevenness (emboss) on the surface of the decorative sheet. At this time, in order to produce a decorative sheet with high design that has a texture close to that of natural wood, an embossed version that faithfully reproduces the grain pattern of natural wood, suppresses gloss, and has an appearance of wood texture and touch. Is required.

As an embossed plate having an appearance of a wood texture, it is possible to use an embossed plate having relatively fine irregularities except for the conduit portion of the wood. As a result, the gloss of the surface can be suppressed, and the amount of the matting agent added to the surface protective layer can be reduced.
On the other hand, as a normal embossed plate for which a feeling of touch is required, a plate having relatively large unevenness is used. This provides a surface that feels touch and warm. Further, when used on a floor surface in a house, slip resistance is obtained, and slippers and socks do not easily fall over, which is preferable. Although the gloss of the surface does not decrease so much, it is possible to suppress the gloss by adding a matting agent to the surface protective layer as appropriate.
However, these decorative sheets are usually stacked and transported in a state in which the sheets are aligned (in a state in which the front surfaces are aligned) when transported to the construction site. Has occurred, and the thermoplastic resin with irregularities shaped partially melts and the embossed shape collapses.

JP 2001-193267 A JP 2001-260109 A JP 2006-097321 A

  The present invention has been made in view of the above points, and even if it is applied to joinery, flooring, etc. using a Lawan alternative material for a wooden base material, it is affected by changes in environmental temperature and humidity. On the other hand, an object of the present invention is to provide a cosmetic material that suppresses warping, has a good wood texture and feel, and can suppress frictional heat when the decorative sheets are superposed on each other.

In order to solve the problems, a decorative material according to one embodiment of the present invention is a decorative material in which a decorative sheet is provided on one surface of a wooden base material and a moisture-proof film is provided on the other surface of the wooden base material. The wood base material has a dimensional change per 1% moisture content change larger than 0.02% and an average moisture content in the range of 6% by mass to 10% by mass. The moisture permeability is 7.0 g / m ² · day or less, and the decorative sheet has a plurality of convex portions having a plurality of concave portions on the surface thereof so that the height difference is relatively in the range of 50 μm to 150 μm. The area ratio occupied by the plurality of recesses with respect to the surface of the decorative sheet has a plurality of concave shapes in which the height difference is in the range of 5 μm or more and 30 μm or less on the upper surface of the convex shape portion, 40% or more and 50% or less in top view , The area ratio of the concave with respect to the upper surface of the convex portion is occupied, characterized in that 50% or less 40% in top view.

  According to the aspect of the present invention, even when a wood base material having a dimensional change per 1% moisture content change larger than 0.02% is used as the wood base material, it is possible to suppress the occurrence of warping and curving. In this way, it is possible to provide other decorative materials for floors that can suppress the deterioration of the hand feeling performance over time.

It is sectional drawing which shows typically the structural example of the decorative material for floors concerning embodiment of this invention.

Next, embodiments of the present invention will be described with reference to the drawings.
Here, the drawings are schematic, and the relationship between the thickness and the planar dimensions, the ratio of the thickness of each layer, and the like are different from the actual ones. Further, the embodiment described below exemplifies a configuration for embodying the technical idea of the present invention, and the technical idea of the present invention is that the material, shape, structure, etc. of the component parts are as follows. It is not something specific. The technical idea of the present invention can be variously modified within the technical scope defined by the claims described in the claims.
In the following embodiments, the case of a flooring decorative material will be described as an example. The decorative material of the present invention may be applied to indoor joinery such as a door.
As shown in FIG. 1, the decorative material for floor 10 of the present embodiment is provided with a decorative sheet 2 on one surface (front surface) of the wooden substrate 1 and the other surface of the wooden substrate 1 ( A moisture-proof film 3 is provided on the back surface.

<Wood base material 1>
The wooden base material 1 uses a wooden base material whose dimensional change per 1% moisture content change is larger than 0.02% and whose average moisture content is 6 to 10% by mass. As such a wood substrate 1, for example, medium density wood fiber board (MDF), high density wood fiber board (HDF), particle board (PB), one of softwood plywood and early-wood plywood, or these boards The base material comprised by laminating | stacking two or more board selected from can be illustrated.
In this way, the Lauan alternative material is used as the wooden substrate 1. In other words, it is a material that replaces the conventional lauan plywood and the like, for example, at least one of medium density wood fiber board (MDF), high density wood fiber board (HDF), particle board (PB), softwood plywood, early-wood plywood, etc. Use seeds. Examples of early mature trees include poplar, falkata, acacia, chamelere, eucalyptus, terminaria and the like. These Lauan alternative materials have a dimensional change per 1% moisture content change greater than 0.02%.

Here, the “dimensional change per 1% moisture content” in the present specification is a dimensional change measured by the following procedure.
(1) Prepare a test piece of the wooden substrate 1 cut to 300 mm × 303 mm.
(2) In a normal temperature (25 ° C.) environment, the current dimensions (length of four sides) of the test piece are measured with a caliper.
(3) The test piece is left in a 40 ° C. oven (humidity free, dry atmosphere≈0% humidity) for one week.
(4) After 1 week, the mass and dimensions (length of four sides) of the test piece are measured.
(5) The dimensional change rate per 1% moisture content change is measured from the measurement data of both conditions.

The thickness of the wooden substrate 1 is not particularly limited, but is preferably about 2 to 15 mm, and more preferably about 2 to 12 mm.
In this embodiment, in preparation for the case where the floor decorative material 10 is cut and used depending on the construction site, the wood substrate 1 has an average moisture content of 6 to 10% by mass and a moisture content in the center. It is preferable to use the wooden substrate 1 having a range of -1% to + 2% as compared with the moisture content of the peripheral portion. When the size of the wooden base material 1 is, for example, about 150 mm long × 1840 mm wide (especially, the length of the short side is 200 mm or less), the warp is caused by the deviation of the moisture content between the central portion and the peripheral portion of the wooden base material 1. A bend is likely to occur. Therefore, by setting the moisture content characteristic of the wooden base material 1 to the above condition, it is possible to suppress the occurrence of warping and curving even when the decorative material for floor 10 is cut and used. In addition, as a case where the decorative material 10 for floors is cut and used, the case where it constructs in the corner | angular part (a wall side or the periphery of a pillar) of the room which constructs the decorative material 10 for floors is specifically assumed.

6-10 mass% is preferable and, as for the average moisture content of the wooden base material 1, 6.5-8.0 mass% is more preferable. If the average moisture content is within the above range, it is easy to suppress the occurrence of curving and warping after cutting. Among them, when the floor decorative material 10 is used for floor heating, the average moisture content is preferably set to 6 to 9% by mass.
The moisture content of the wooden substrate 1 is preferably in the range of -1% to + 2%, and in the range of -0.5% to + 1.0%, as compared with the moisture content of the central part. It is more preferable that In addition, the peripheral part of the wooden base material 1 means a range of 5 cm around the wooden base material 1, and the central part of the wooden base material 1 means the inside of the wooden base material 1 excluding the peripheral part.

Moreover, the average moisture content and moisture content difference (hereinafter, “moisture content difference” in the present specification indicates the moisture content difference between the peripheral portion and the central portion of the wood substrate 1) are as follows. It is a value measured by.
(A) A wooden substrate 1 having a length of 303 mm and a width of 1818 mm is prepared.
(B) The range of 5 cm from the periphery of the wooden substrate 1 is the peripheral portion, and the inner side is the central portion.
35 samples of 5 cm × 5 cm are collected evenly from the prepared wooden substrate 1, and the water content is measured by a total dry method. The all-dry method is a method in which each sample is left in an oven at 105 ° C. for 3 days, and then the moisture content of each sample is measured from the following calculation formula. Before leaving is referred to as before processing, and after leaving is referred to as after processing.
Moisture content (%) = {(mass before treatment−mass after treatment) / mass after treatment} × 100
(C) The average value of 35 samples is defined as “average moisture content”.
(D) The value obtained by subtracting the average value of the peripheral samples (20 samples) from the average value of the central samples (15 samples) is defined as “moisture content difference”.

<Dampproof film 3>
The moisture-proof film 3 has a moisture permeability of 7.0 g / m ² · day or less.
The moisture permeability of the present embodiment is a measured value in a temperature 40 ° C., humidity 90% RH environment according to JIS Z0208 (moisture permeability test method (cup method)). Hereinafter, the moisture permeability in the present specification is a measured value under these conditions.
The moisture-proof film 3 of the present embodiment includes a resin base layer 31 and a vapor deposition layer 32 formed on the base layer 31. Accordingly, the moisture permeability can be set to 1.0 g / m ² · day or less. It is preferable that the moisture-proof film 3 has a moisture permeability of 1.0 g / m ² · day or less.

The moisture-proof film 3 preferably has a surface protective layer 33 on the vapor deposition layer 32. At this time, it is preferable that the moisture-proof film 3 has a primer layer between the base material layer 31 and the vapor deposition layer 32.
Furthermore, it is preferable that an adhesive primer layer is formed on at least one of the front and back surfaces of the moisture-proof film 3.
By providing the moisture-proof film 3 having a moisture permeability of 7.0 g / m ² · day or less on the back surface, the moisture permeability of the back surface of the wooden substrate 1 is kept low. Therefore, even when a lauan substitute material having a dimensional change per 1% moisture content change larger than 0.02% is used as the wood base material 1 and a decorative sheet 2 having low moisture permeability is laminated on the surface, The moisture permeability of the back surface and the surface of the substrate 1 can be set to the same level. For this reason, generation | occurrence | production of the curvature and the bending of the decorative material 10 for floors is fully suppressed. Such a floor decorative material 10 of the present invention is suitable as a floor decorative material 10 to be constructed on the floor surface of various buildings and as a floor decorative material 10 used for floor heating as a special application.

  The base material layer 31 of the moisture-proof film 3 is made of resin, for example, olefinic thermoplastic resins such as polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl alcohol copolymer, and mixtures thereof; polyethylene terephthalate, poly Ester thermoplastic resins such as butylene terephthalate, polyethylene naphthalate, polyethylene naphthalate-isophthalate copolymer, polycarbonate, polyarylate; acrylic heat such as methyl polymethacrylate, ethyl polymethacrylate, polybutyl acrylate Non-halogen thermoplastic resins such as polyimide resin, polyurethane, polystyrene, acrylonitrile-butadiene-styrene resin, and the like.

The base material layer 31 may be a sheet stretched in a uniaxial or biaxial direction, or may be unstretched. When forming the vapor deposition layer 32, the sheet | seat extended | stretched to the biaxial direction is preferable for reasons, such as strong mechanical strength and being excellent in dimensional stability. The thickness of the base layer 31 made of synthetic resin is appropriately 9 to 25 μm.
Examples of the vapor deposition layer 32 include an inorganic vapor deposition layer made of a metal thin film typified by aluminum, and an inorganic oxide vapor deposition layer made of an inorganic oxide thin film typified by silicon oxide, magnesium oxide, and aluminum oxide. The vapor deposition layer 32 is formed on the base layer 31 made of a synthetic resin by a known vapor deposition method such as a vacuum vapor deposition method or a plasma activated chemical reaction vapor deposition method. More preferably, the vapor deposition layer 32 is an inorganic oxide vapor deposition layer that is transparent.
In order to further improve the gas barrier property of the vapor deposition layer 32, it is preferable to provide the surface protective layer 33 on the vapor deposition layer 32.

Examples of the surface protective layer 33 include polyvinyl alcohol resins. Moreover, the general formula ^{_{R 1 n M (OR 2)}} m ( where in the ^formula, R 1, ^{R 2} represents an organic group having 1 to 8 carbon atoms, M represents a metal atom, n represents an integer of 0 or more M represents an integer of 1 or more, and n + m represents a valence of M), and a polyvinyl alcohol resin and / or an ethylene / vinyl alcohol copolymer. Furthermore, a composition prepared by polycondensation by a sol-gel method in the presence of a sol-gel method catalyst, an acid, water and an organic solvent can be mentioned. Further, by combining polyvinyl alcohol and an ethylene / vinyl alcohol copolymer, gas barrier properties, water resistance, weather resistance and the like are remarkably improved. A silane coupling agent or the like may be added to the composition. The surface protective layer 33 is obtained by applying these resins or compositions on the vapor deposition layer 32 by a known coating method such as a roll coating method or a gravure coating method.

That is, the surface protective layer 33 is composed of a coating layer mainly composed of a water-soluble polymer containing a metal alkoxide hydrolyzate and polyvinyl alcohol, thereby improving the gas barrier property of the vapor deposition layer 2B and increasing the number of vapor deposition films. Even if there is only one layer, high barrier properties can be secured. Accordingly, the moisture permeability of the moisture-proof film 32 can be set to 0.5 g / m 2 · day or less. Here, a main component refers to 70 mass parts or more when the whole is 100 mass parts.
The metal alkoxide is a compound in which a metal such as Si, Ti, Al, or Zr is employed as the metal M, and R can be represented by an alkyl group such as CH ₃ or C ₂ H _5. Specifically, tetraethoxysilane is used. [Si (OC ₂ H ₅ ) ₄ ], triisopropoxyaluminum [Al (O-2′-C ₃ H ₇ ) ₃ ], and the like. Among them, tetraethoxysilane and triisopropoxyaluminum are hydrolyzed and then aqueous. It is preferable because it is relatively stable in the solvent.

It is also possible to add known additives such as isocyanate compounds, silane coupling agents, or dispersants, stabilizers, viscosity modifiers, and colorants to the solution as long as the gas barrier properties are not impaired. is there.
As a method for applying the coating agent, conventionally known methods such as a dipping method, a roll coating method, a screen printing method, a spray method, and a gravure printing method that are usually used can be used.
The optimum condition for the thickness of the surface protective layer 33 varies depending on the type of coating agent, the processing machine, and the processing conditions. However, when the thickness after drying is 0.01 μm or less, a coating film cannot be obtained uniformly and a sufficient gas barrier property may not be obtained. On the other hand, if the thickness exceeds 50 μm, cracks are likely to occur in the film, which may be a problem. It exists in the range of 0.01-50 micrometers, More preferably, it exists in the range of 0.1-10 micrometers.

At least one of the surface of the base material layer 31 and the surface of the surface protective layer 33 is preferably subjected to surface treatment such as corona treatment as necessary. By such surface treatment, the adhesive strength with the adjacent layer can be further increased. Moreover, you may provide a primer layer further between the base material layer 31 and the vapor deposition layer 32, and the single side | surface or both surfaces of the moisture-proof film 3. FIG.
These primer layers are provided in order to enhance the adhesion between the base material layer 31 and the vapor deposition layer 32 and to enhance the adhesion when the moisture-proof film 3 is laminated on another layer.
Examples of the resin used for the primer layer include ester resins, urethane resins, acrylic resins, polycarbonate resins, vinyl chloride-vinyl acetate copolymers, polyvinyl butyral resins, nitrocellulose resins, and the like. These resins can be used alone or in combination. The primer layer can be formed using an appropriate application means such as a roll coating method or a gravure printing method.

  Among these, the primer layer is preferably formed from (i) a copolymer of an acrylic resin and a urethane resin and (ii) an isocyanate. That is, the copolymer of (i) an acrylic resin and a urethane resin is composed of an acrylic polymer component having a hydroxyl group at the terminal (component A), a polyester polyol component having a hydroxyl group at both ends (component B), and a diisocyanate component (component). C) is mixed and reacted to form a prepolymer, and a chain extender (component D) such as diamine is further added to the prepolymer to extend the chain. By this reaction, polyester urethane is formed and an acrylic polymer component is introduced into the molecule to form an acrylic-polyester urethane copolymer having a hydroxyl group at the terminal. The acrylic-polyester urethane copolymer is formed by reacting the terminal hydroxyl group with the isocyanate (ii) and curing.

  As the component A, a linear acrylate polymer having a hydroxyl group at the terminal is used. Specifically, linear polymethyl methacrylate (PMMA) having a hydroxyl group at the terminal is preferable because it is excellent in weather resistance (particularly, characteristics against photodegradation) and can be easily copolymerized with urethane. The component A is an acrylic resin component in the copolymer, and those having a molecular weight of 5000 to 7000 (mass average molecular weight) are preferably used because of particularly good weather resistance and adhesiveness. In addition, the component A may be used only having a hydroxyl group at both ends, but a mixture in which a conjugated double bond remains at one end is mixed with the one having a hydroxyl group at both ends. Also good.

  The component B reacts with diisocyanate to form polyester urethane and constitutes a urethane resin component in the copolymer. The component B is a polyester diol having hydroxyl groups at both ends. Examples of the polyester diol include an addition reaction product of a diol compound having an aromatic or spiro ring skeleton and a lactone compound or a derivative thereof, or an epoxy compound, a condensation product of a dibasic acid and a diol, and a cyclic ester compound. Examples thereof include a derived polyester compound. Examples of the diol include short-chain diols such as ethylene glycol, propylene glycol, diethylene glycol, butanediol, hexanediol, and methylpentenediol; and alicyclic short-chain diols such as 1,4-cyclohexanedimethanol. it can. Examples of the dibasic acid include adipic acid, phthalic acid, isophthalic acid, terephthalic acid and the like. Preferred as the polyester polyol is adipic acid using adipic acid or a mixture of adipic acid and terephthalic acid as the acid component, particularly preferably adipic acid, and 3-methylpentenediol and 1,4-cyclohexanedimethanol as the diol component. Polyester.

  In the primer layer, the urethane resin component formed by the reaction of the component B and the component C gives flexibility to the primer layer and contributes to improvement in adhesion. Moreover, the acrylic resin component which consists of an acrylic polymer contributes to a weather resistance and blocking resistance in the said primer layer. In the urethane resin, the molecular weight of the component B may be within a range in which a urethane resin capable of sufficiently exhibiting flexibility in the primer layer is obtained. Adipic acid or a mixture of adipic acid and terephthalic acid, and 3-methylpentanediol And in the case of the polyester diol which consists of 1, 4- cyclohexane dimethanol, 500-5000 (mass average molecular weight) is preferable.

  As the component C, an aliphatic or alicyclic diisocyanate compound having two isocyanate groups in one molecule is used. Examples of the diisocyanate include tetramethylene diisocyanate, 2, 2, 4 (2, 4, 4) -1, 6-hexamethylene diisocyanate, isophorone diisocyanate, 4, 4′-dicyclohexyl methane diisocyanate, and 1, 4′-cyclohexyl. A diisocyanate etc. can be mentioned. As the diisocyanate component, isophorone diisocyanate is preferable in terms of physical properties and cost. When the above-mentioned components A to C are reacted, the equivalent ratio of the total hydroxyl group (may be an amino group) of the acrylic polymer, polyester polyol and chain extender described below and the isocyanate group is such that the isocyanate group becomes excessive. To.

  When the above three components A, B and C are reacted at 60 to 120 ° C. for about 2 to 10 hours, the isocyanate group of the diisocyanate reacts with the hydroxyl group at the end of the polyester polyol to form a polyester urethane resin component and an acrylic polymer. A compound in which diisocyanate is added to the terminal hydroxyl group is also mixed, and a prepolymer is formed in a state where excess isocyanate group and hydroxyl group remain. As a chain extender, for example, a diamine such as isophorone diamine or hexamethylene diamine is added to this prepolymer, the isocyanate group is reacted with the chain extender, and the chain is extended so that the acrylic polymer component is contained in the polyester urethane molecule. The (i) acrylic-polyester urethane copolymer introduced and having a hydroxyl group at the terminal can be obtained.

  Addition of isocyanate of (ii) to acrylic-polyester urethane copolymer of (i), coating method, coating solution adjusted to necessary viscosity in consideration of coating amount after drying, gravure coating method, roll The primer layer may be formed by coating by a known coating method such as a coating method. The isocyanate of (ii) may be any isocyanate that can be crosslinked and cured by reacting with the hydroxyl group of the acrylic-polyester urethane copolymer of (i). An aliphatic isocyanate can be used, and an aliphatic isocyanate is particularly desirable from the viewpoint of thermal discoloration prevention and weather resistance. Specifically, tolylene diisocyanate, xylylene diisocyanate, 4,4'-dicyclohexylmethane diisocyanate, hexamethylene diisocyanate, lysine diisocyanate monomer, multimers such as dimer and trimer thereof, or these And polyisocyanates such as derivatives (adducts) obtained by adding the above isocyanate to a polyol.

As the coating amount after drying of the primer layer is from 1 to 20 g / ^{m 2,} preferably from 1 to 5 g / ^{m 2.} Moreover, the said primer layer is good also as a layer which added additives, such as fillers, such as a silica powder, a light stabilizer, and a coloring agent, as needed.
When the moisture-proof film 3 is laminated on the wooden substrate 1, a known adhesive can be used. Examples of the adhesive include polyvinyl acetate, polyvinyl chloride, vinyl chloride / vinyl acetate copolymer, ethylene / acrylic acid copolymer, ionomer, butadiene / acrylonitrile rubber, neoprene rubber, natural rubber, and the like as active ingredients. Adhesives to be used. Although the thickness of an adhesive bond layer is not limited, About 0.1-50 micrometers is preferable.

<Decorative sheet 2>
For example, the decorative sheet 2 is provided with a printing layer 22 (solid ink layer / pattern pattern layer), an adhesive layer 23, and a resin layer 24 in this order on a base sheet 21. The unevenness described later is formed in the resin layer 24.
In this embodiment, the case where the topcoat layer 25 as a surface protective layer is provided on the resin layer 24 is illustrated. The top coat layer 25 contains at least one of a thermosetting resin and an ionizing radiation curable resin as a main component.
The decorative sheet 2 preferably has a moisture permeability of 7.0 g / m ² · day or less, more preferably 5.0 g / m ² · day or less at a temperature of 40 ° C. and a humidity of 90%.

  As the base material sheet 21, it is comprised by laminating | stacking 1 layer or multiple layers of paper, a woven fabric, a nonwoven fabric, and a resin sheet, for example. Examples of the paper include paper such as thin paper, high-quality paper, kraft paper, Japanese paper, titanium paper, resin-impregnated paper, and inter-paper reinforced paper. Examples of the woven or non-woven fabric include woven or non-woven fabric made of wood fiber, glass fiber, asbestos, polyester fiber, vinylon fiber, rayon fiber and the like. Examples of the resin sheet include synthetic resin sheets such as polyolefin, polyester, polyacryl, polyamide, polyurethane, and polystyrene. Of these, polyolefin resins can be preferably used in terms of environmental compatibility, processability, and cost. In addition, the grade and composition of the resin can be selected in consideration of ease of sheeting, printability, and suitability for bending. The base sheet 21 is preferably made of a thermoplastic resin.

As for the thickness of the base material sheet 21, about 20-300 micrometers is preferable. The base sheet 21 may be colored as necessary. Further, the surface may be subjected to surface treatment such as corona discharge treatment, plasma treatment, or ozone treatment.
The print layer 22 is composed of a pattern layer or a solid ink layer. The printing layer 22 can be formed by a printing method such as gravure printing, offset printing, silk screen printing, or the like. Examples of the pattern of the pattern layer include a wood grain pattern, a stone pattern, a cloth pattern, a skin pattern, a geometric pattern, characters, symbols, line drawings, various abstract patterns, and the like. The solid ink layer is obtained by solid printing of colored ink. The print layer 22 includes at least one of a pattern pattern layer and a solid ink layer.

  The ink used for the printing layer 22 includes, as a vehicle, chlorinated polyolefin such as chlorinated polyethylene and chlorinated polypropylene, polyester, polyurethane composed of isocyanate and polyol, polyacryl, polyvinyl acetate, polyvinyl chloride, and vinyl chloride-vinyl acetate. A copolymer, a cellulose resin, a polyamide resin or the like may be used alone or in combination, and a pigment, a solvent, various auxiliary agents, and the like may be added thereto to make an ink. Among these, from the viewpoint of environmental problems, adhesion to the printing surface, and the like, one or a mixture of two or more of polyester, polyurethane composed of isocyanate and polyol, polyacryl, polyamide-based resin, and the like is preferable.

The adhesive layer 23 may be composed of a known adhesive. For example, a known dry lamination adhesive such as a two-component curable polyester anchor coating agent or a two-component curable urethane resin on the printing layer 22. For example, the printing layer and the transparent resin layer 24 are laminated and adhered by the dry lamination method, the T-die extrusion method, or the like through the adhesive layer 23.
The resin layer 24 will not be specifically limited if it is the transparent resin layer 24, For example, it can form suitably with a transparent thermoplastic resin.
Specifically, soft, semi-rigid or rigid polyvinyl chloride, polyethylene terephthalate, polybutylene terephthalate, polyamide, polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-acrylic acid ester copolymer Examples include polymers, ionomers, acrylic esters, and methacrylic esters. Among the above, polyolefin resins such as polypropylene are preferable.

The resin layer 24 may be colored. In this case, a colorant may be added to the thermoplastic resin. As the colorant, a pigment or dye used in the printing layer 22 can be used.
For the resin layer 24, a filler, a matting agent, a foaming agent, a flame retardant, a lubricant, an antistatic agent, an antioxidant, an ultraviolet absorber, a light stabilizer, a radical scavenger, a soft component (for example, rubber), etc. Various additives may be included.
The top coat layer 25 (surface protective layer) is provided for imparting surface physical properties such as scratch resistance, abrasion resistance, water resistance, and stain resistance required for the decorative sheet 2. The top coat layer 25 is formed along the shape of the surface of the resin layer 24.
As the resin for forming the top coat layer 25, a curable resin such as a thermosetting resin or an ionizing radiation curable resin is preferable. In particular, ionizing radiation curable resins are preferable from the viewpoint of high surface hardness, productivity, and the like.

Examples of thermosetting resins include unsaturated polyester resins, polyurethane resins (including two-component curable polyurethane), epoxy resins, amino alkyd resins, phenol resins, urea resins, diallyl phthalate resins, melamine resins, guanamine resins, and melamines. -Urea co-condensation resin, silicon resin, polysiloxane resin and the like.
A curing agent such as a crosslinking agent and a polymerization initiator, and a polymerization accelerator can be added to the resin. For example, as curing agents, isocyanates, organic sulfonates, etc. can be added to unsaturated polyester resins, polyurethane resins, etc., organic amines, etc. can be added to epoxy resins, peroxides such as methyl ethyl ketone peroxide, azoisobutyl nitrile, etc. A radical initiator can be added to the unsaturated polyester resin.
Examples of the method for forming the topcoat layer 25 with a thermosetting resin include a method in which a solution of a thermosetting resin is applied by a coating method such as a roll coating method or a gravure coating method and then dried and cured. The coating amount of the solution is about 5 to 30 μm, preferably about 5 to 20 μm in terms of solid content.

The ionizing radiation curable resin is not limited as long as it is a resin that undergoes a crosslinking polymerization reaction upon irradiation with ionizing radiation and changes to a three-dimensional polymer structure. For example, one or more prepolymers, oligomers and monomers having a polymerizable unsaturated bond or epoxy group that can be crosslinked by irradiation with ionizing radiation in the molecule can be used. Examples thereof include acrylate resins such as urethane acrylate, polyester acrylate, and epoxy acrylate; silicon resins such as siloxane; polyester resins; epoxy resins and the like.
Examples of the ionizing radiation include visible light, ultraviolet light (near ultraviolet light, vacuum ultraviolet light, etc.), X-rays, electron beams, ion beams, etc. Among them, ultraviolet light and electron beams are preferable.

As the ultraviolet light source, 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 fluorescent lamp, or a metal halide lamp can be used. The wavelength of ultraviolet light is about 190 to 380 nm.
As the electron beam source, various electron beam accelerators such as a cockcroft-wald type, a bandegraft type, a resonant transformer type, an insulating core transformer type, a linear type, a dynamitron type, and a high frequency type can be used. The energy of the electron beam is preferably about 100 to 1000 keV, more preferably about 100 to 300 keV. The irradiation amount of the electron beam is preferably about 2 to 15 Mrad.
The ionizing radiation curable resin is sufficiently cured when irradiated with an electron beam, but it is preferable to add a photopolymerization initiator (sensitizer) when it is cured by irradiation with ultraviolet rays.

Examples of the photopolymerization initiator in the case of a resin system having a radically polymerizable unsaturated group include acetophenones, benzophenones, thioxanthones, benzoin, benzoin methyl ether, Michler benzoylbenzoate, Michler ketone, diphenyl sulfide, dibenzyl disulfide. , Diethyl oxide, triphenylbiimidazole, isopropyl-N, N-dimethylaminobenzoate and the like can be used. In the case of a resin system having a cationic polymerizable functional group, for example, at least one kind such as an aromatic diazonium salt, an aromatic sulfonium salt, a metallocene compound, a benzoin sulfonic acid ester, and a freeloxysulfoxonium diallyl iodosyl salt. Can be used.
Although the addition amount of a photoinitiator is not specifically limited, Generally it is about 0.1-10 mass parts with respect to 100 mass parts of ionizing radiation curable resins.

As a method for forming a protective layer with an ionizing radiation curable resin, for example, a solution of an ionizing radiation curable resin may be applied by a coating method such as a gravure coating method or a roll coating method. The coating amount of the solution is generally about 5 to 30 μm, preferably about 5 to 20 μm as a solid content.
In order to further impart scratch resistance and abrasion resistance to the top coat layer 25 formed from an ionizing radiation curable resin, an inorganic filler may be blended. Examples of inorganic fillers include powdered aluminum oxide, silicon carbide, silicon dioxide, calcium titanate, barium titanate, magnesium pyroborate, zinc oxide, silicon nitride, zirconium oxide, chromium oxide, iron oxide, boron nitride, Examples include diamond, gold sand and glass fiber.

The addition amount of the inorganic filler is about 1 to 80 parts by mass with respect to 100 parts by mass of the ionizing radiation curable resin.
Here, by adding a gloss adjusting agent such as silica to the top coat layer 25, the 60-degree gloss value of the surface of the decorative sheet 2 is preferably set to 5 or more and 14 or less, preferably 5 or more and 8 or less. . If the 60 ° gloss value is less than 5, it is disadvantageous in terms of temperature rise during sliding, and if the 60 ° gloss value is more than 14, the coefficient of friction of the surface of the decorative material 10 even if an uneven shape described later is formed. There is a risk that the anti-slip performance will deteriorate due to the excessively high value.
The addition amount of the matting modifier is appropriately selected according to the desired gloss value, but the average particle size is preferably about 1 to 10 μm.

Here, the decorative sheet 2 may have a synthetic resin layer (so-called backer layer) having a thickness of 100 μm or more in the lowermost layer (layer that adheres to the wooden substrate 1). The backer layer means a buffer layer for the purpose of absorbing shock in the floor decorative material 10. Examples of the material constituting the backer layer include polypropylene, ethylene-vinyl alcohol copolymer, polymethylene, polymethylpentene, polyethylene terephthalate, and high heat-resistant polyalkylene terephthalate [for example, a part of ethylene glycol is 1, 4- Polyethylene terephthalate substituted with cyclohexanedimethanol or diethylene glycol, so-called trade name PET-G (manufactured by Eastman Chemical Company)], polybutylene terephthalate, polyethylene naphthalate, polyethylene naphthalate-isophthalate copolymer, polycarbonate, poly Examples include arylate, polyimide, polystyrene, polyamide, and ABS. These resins can be used alone or in combination of two or more. The upper limit of the thickness of the backer layer is not limited, but 600 μm is appropriate.
When laminating the decorative sheet 2 on the wooden substrate 1, a known adhesive can be used. Examples of the adhesive include polyvinyl acetate, polyvinyl chloride, vinyl chloride / vinyl acetate copolymer, ethylene / acrylic acid copolymer, ionomer, butadiene / acrylonitrile rubber, neoprene rubber, natural rubber, and the like as active ingredients. Adhesives to be used. The thickness of the adhesive layer 23 is not limited, but is preferably about 0.1 to 50 μm.

<Uneven shape>
The floor decorative material 10 of the present embodiment has a plurality of large concave portions 40 on the surface of the decorative sheet 2 side. Each of the large concave portions 40 has a height difference set in a range of 50 μm or more and 150 μm or less, and the relative convexity between the plurality of large concave portions 40 constitutes a large convex shape portion 41. The area ratio with respect to the surface of the decorative sheet occupied by the plurality of large recesses 40 is adjusted to be in the range of 40% to 50% in a top view.
Further, in the present embodiment, a plurality of fine concave shapes 42 are formed on the upper surface of the large convex shape portion 41. The plurality of fine concave shapes 42 are set to have a height difference in the range of 5 μm or more and 30 μm or less. The area ratio of the plurality of fine concave shapes 42 to the upper surface of the convex portion 41 is as viewed from above. In the range of 40% to 50%.

Here, when calculating the above-mentioned area ratio, the exclusive portion of each fine concave shape 42 is a portion of the bottom side portion of the concave shape 42 as viewed from above with respect to the intermediate depth position between the bottom portion and the convex portion. It is.
The large concave portions 40 and the fine concave shapes 42 described above may be a method of forming an uneven shape on the surface of the resin layer 24 by heating and pressurizing using an emboss mold (so-called embossing). When the resin layer 24 is formed by an extruder, irregularities can be formed on the surface of the resin layer 24 by an embossing roll or the like immediately after extrusion.
What is necessary is just to form by an embossed plate.

Here, a pattern such as wood grain is formed by the large recess 40, and is arranged so as to be synchronized with the pattern of the printed layer, for example.
The large concave portions may be arranged in a strip shape or a line shape such as a grain shape, or in a dot shape.
In addition, when a plurality of large concave portions 40 (large convex shape portions 41) are regularly arranged at regular intervals such as a houndstooth, for example, a rubbing sound accompanying walking of a pet or the like has the same frequency. It may occur, resonate and amplify, and may be perceived by the human ear as an unpleasant rubbing sound. For this reason, by arranging the large concave portions 40 (large convex portions 41) at random, the frequency of the rubbing sound may not be uniform, and the resonance and amplification of the rubbing sound may be suppressed. In this case, it is possible to suppress an unpleasant rubbing sound that can be heard by the ear.

The random arrangement may be arranged in consideration of having no regularity, and in that case, a certain effect can be expected. Random placement is more effective by random placement using random number calculations.
By making the height difference of the large concave portion 40 in the range of 50 μm or more and 150 μm or less, it becomes possible to give the decorative plate anti-slip performance. When the height difference is large, such as 200 μm or more, the large concave portion 40 (large convex portion 41) is easily visible with the naked eye, and the design feeling is not preferable.
When the area ratio of the large concave portion 40 and the fine concave shape 42 is less than 40% or exceeds 50%, the anti-slip property may be deteriorated. Therefore, the area ratio is set to 40% or more and 50% or less. .

Further, by providing the fine concave portion 42 having the above-described configuration together with the large concave portion 40 having the above-described configuration, the bark feel and tactile sensation are improved as described later.
When the top coat layer 25 is provided on the outermost surface of the resin layer 24 having the uneven shape, a cross-linking resin such as a thermosetting resin, an ultraviolet curable resin, or an electron beam curable resin is used. The weather resistance, scratch resistance, stain resistance and the like of the decorative sheet 2 for floor can be enhanced. Note that the shape of the unevenness formed on the surface of the resin layer 24 is reflected in the topcoat layer 25 formed thereon, and similar unevenness is also formed on the surface of the topcoat layer 25.
The floor decorative material 10 as described above can also be used as a floor heating floor material. In this case, for example, a heating appliance provided with heating means such as a hot water pipe is disposed below the floor decorative material 10, but warping of the floor decorative material 10 due to moisture from the heating appliance is prevented. As a result, it is possible to more effectively prevent the deterioration over time of the good hand feeling and the anti-slip effect.

<Effect of embodiment>
The embodiment of the present invention has the following effects.
(1) The floor decorative material 10 includes the moisture-proof film 3 having a moisture permeability of 7.0 g / m ² · day or less.
According to this structure, the moisture permeability of the back surface of the wooden base material 1 is suppressed low. Therefore, even when the decorative sheet 2 is laminated on the surface using a Lauan alternative material in which the dimensional change per 1% moisture content change is larger than 0.02% as the wooden substrate 1, one of the wooden substrates 1 is laminated. The moisture permeability of the surface and the other surface can be set to the same level. As a result, the occurrence of warping and bending of the floor decorative material 10 is sufficiently suppressed.
Such a floor decorative material 10 of the present invention is suitable as a floor decorative material 10 to be constructed on the floor surface of various buildings and as a floor decorative material 10 used for floor heating as a special application.
In particular, when the moisture permeability of the floor decorative material 10 is 1.0 g / m ² · day or less, the occurrence of warping and bending of the floor decorative material 10 can be significantly suppressed.

(2) The decorative sheet 2 has a plurality of large convex portions 41 having a plurality of large concave portions 40 on the surface thereof, so that the height difference is relatively in the range of 50 μm or more and 150 μm or less. The top surface of the convex portion has a plurality of fine concave shapes 42 having a height difference in the range of 5 μm or more and 30 μm or less, and the area ratio occupied by the plurality of large concave portions 40 with respect to the surface of the decorative sheet is 40% or more and 50% or less visually.
The area ratio occupied by the fine concave shape 42 with respect to the upper surface of the convex shape portion is 40% or more and 50% or less in a top view.

According to this configuration, as described above, even when a wooden base material having a dimensional change amount per 1% moisture content change larger than 0.02% is used as the wooden base material 1, generation of warpage or bending is caused. By being able to be suppressed, it becomes possible to provide other cosmetics for floors capable of suppressing the deterioration of the anti-slip performance and the feeling of touch over time.
In addition, by arranging the large concave portions 40 at random, the frequency of the rubbing sound is not uniform, and the resonance and amplification of the rubbing sound are suppressed, so that the unpleasant rubbing sound that can be heard by the ear can be suppressed. .
From the above, it is possible to provide the floor decorative material 10 having a good touch feeling without impairing the anti-slip performance as a general floor material.

(3) Further, the resin layer 24 having the above-described uneven shape on the surface is covered with a top coat layer 25.
Thereby, the floor decorative material 10 excellent in durability (that is, weather resistance, scratch resistance, and contamination resistance) can be provided.

Next, examples of the present invention will be described.
<Example 1>
A 70 μm thick polyethylene film (manufactured by Riken Technos Co., Ltd.) is used as the thermoplastic resin base sheet of the decorative sheet, and gravure ink (manufactured by Toyo Ink Co., Ltd.) is used as a pattern pattern layer (printing layer) on one side. A wood grain print was printed by a gravure printing machine with "Lamister").
A silica powder-containing primer layer was applied at a coating thickness of 2 μm on the surface opposite to the pattern surface of the substrate sheet. A two-component curable polyester anchor coating agent was applied as an adhesive layer 23 on the pattern layer with a coating thickness of 1 μm.

On the adhesive layer 23, a transparent thermoplastic resin layer 80 μm mainly composed of maleic acid-modified polypropylene resin 10 μm and homopolypropylene (manufactured by Prime Polymer Co., Ltd.) is placed so that the adhesive layer is on the pattern layer side. The following uneven shape was formed by co-extrusion lamination and simultaneously by embossing.
That is, the depth of the large concave portion 40 provided on the upper surface of the large convex portion 41 that does not hang over the large concave portion 40 is that the depth of the large concave portion 40 is 80 μm and the area ratio viewed from the upper surface is 46%. A concave-convex shape having a thickness of 15 μm and an area ratio of the fine concave shape 42 as viewed from the upper surface of 41% was formed.

After that, a thermosetting acrylic urethane resin (manufactured by DIC Graphics Co., Ltd.) is applied to the surface of the transparent thermoplastic resin layer as a surface protective layer so as to be 9 g / m ² after drying, and then an ultraviolet curable urethane acrylate. The resin (manufactured by DIC Graphics) was coated to 7.0 g / m ² after drying. At that time, an appropriate addition of silica was added to the ultraviolet curable urethane acrylate resin so that the 60 ° specular gloss value according to JIS Z 8741 was 5. Subsequently, the target decorative sheet was obtained by curing by ultraviolet irradiation (high pressure mercury lamp, 200 mJ / cm ² ).

<Example 2>
Example 2 is the same as Example 1 except that the amount of silica internally added to the UV-curable urethane acrylate resin is changed so that the 60 ° specular gloss value according to JIS Z 8741 is 14. A decorative sheet was prepared.

<Comparative Example 1>
Comparative Example 1 is the same as Example 1 except that the amount of silica internally added to the UV-curable urethane acrylate resin is changed so that the 60 ° specular gloss value according to JIS Z 8741 is 3. A decorative sheet was prepared.
<Comparative example 2>
Except for changing the amount of silica internally added to the UV curable urethane acrylate resin so that the 60 ° specular gloss value according to JIS Z 8741 is 16, the same method as in Example 1 was used. A decorative sheet was prepared.

<Comparative Example 3>
A decorative sheet of Comparative Example 3 was produced in the same manner as in Example 1 except that the uneven shape formed on the transparent thermoplastic resin layer was changed. That is, the depth of the large concave portion 40 is 30 μm and the area ratio when viewed from the upper surface is 93%, and the depth of the fine concave shape 42 provided on the convex portion 41 that does not hook the large concave portion 40 is 15 μm. The concave / convex shape having an area ratio of the concave shape 42 as viewed from the top surface of 41% was formed.
<Comparative Example 4>
A decorative sheet of Comparative Example 4 was produced in the same manner as in Example 1 except that the uneven shape formed on the transparent thermoplastic resin layer was changed. That is, the depth of the large concave portion 40 is 80 μm and the area ratio when viewed from the upper surface is 46%, and the concave and convex shape that does not provide the fine concave shape 42 is formed on the convex portion 41 that does not hang over the large concave portion 40. . The fine concave shape 42 is not formed.

<Production of cosmetic material>
The decorative sheets of Examples 1 and 2 and Comparative Examples 1 to 4 were bonded to the surface of a 12 mm thick plywood as a two-component aqueous emulsion adhesive (“Rikabond” (BA-10L / BA, manufactured by Chuo Rika Kogyo Co., Ltd.). −11B = 100: 2.5)) was applied to 100 g / m ² in a wet state, and then bonded and cured for 24 hours to prepare cosmetic materials of Examples 1 and 2 and Comparative Examples 1 to 4.

<Performance evaluation>
[Sliding temperature measurement]
As described above, with respect to the decorative material prepared by bonding the decorative sheets of Examples 1 and 2 and Comparative Examples 1 to 4, the temperature rise was measured when the decorative sheets were slid on the surfaces of the decorative sheet. A sensor of a data collector (“AM-7002” manufactured by Anritsu Keiki Co., Ltd.) is attached to the decorative sheet surface near the sliding portion, and 1 kg / cm ^{2 with} an electric sander (“Mini Sander FSV12SG” manufactured by Hitachi Koki Co., Ltd.). The surface temperature of the decorative sheet when it was slid for 30 seconds under a load of 1 mm was measured at intervals of 1 second. The evaluation results are shown in Table 1.
Here, when the maximum temperature in the measurement was less than 100 ° C., it was evaluated as “◯”, and when it was 100 ° C. or more, it was evaluated as “x”.

[Skin feel and feel]
A sensory test was carried out on 10 testers with respect to the feel of the wood surface and the feel of the hand.
With respect to each of the feeling of wood texture and the feeling of touch, the evaluation was “X” if there were 0 good people, “Δ” if 1 to 6 people, and “◯” if 7 to 10 people.
Table 1 shows the results of the sensory test.

As can be seen from Table 1, in Examples 1 and 2 based on the present invention, it can be seen that the effect of suppressing the temperature rise during sliding, the feeling of wood texture, and the feeling of touch are good.
Here, although each evaluation is good also for the comparative example 2, it confirmed that the friction coefficient became high and the anti-slip | skid performance worsened conversely because gloss value was high.
Here, the floor decorative material 10 of Examples 1 and 2 was left in a 40 ° C. atmosphere (dry atmosphere) for 7 days (7 days), and the amount of warpage of the floor decorative material 10 was measured. It is confirmed that it is suppressed.
Further, the floor decorative material 10 of Examples 1 and 2 was left in a 40 ° C atmosphere (90% humidity atmosphere) for 7 days (7 days), and the amount of warpage of the floor decorative material 10 was measured. It is confirmed that the warpage is suppressed.

  Thus, the floor decorative material 10 according to the present invention effectively suppresses the dimensional change due to the humidity of the wooden substrate 1 due to the presence of the moisture-proof film 3. For this reason, even if it employ | adopts as a heating floor material (floor material of a floor heating system) which arrange | positions heating appliances, such as a hot-water mat, under the decorative material 10 for floors, as a result of suppressing a curvature of a floor, etc. It turns out that the aged deterioration of a slip suppression effect can be suppressed.

DESCRIPTION OF SYMBOLS 1 Woody base material 2 Cosmetic sheet 21 Base material sheet 22 Printing layer 23 Adhesive layer 24 Resin layer 25 Topcoat layer (surface protective layer)
DESCRIPTION OF SYMBOLS 3 Moisture-proof film 31 Base material layer 32 Deposition layer 33 Surface protective layer 40 Concave part 41 Convex-shaped part 42 Concave shape

Claims (6)

A decorative material is provided with a decorative sheet on one side of the wooden substrate and a moisture-proof film on the other surface of the wooden substrate,
The wood base material has a dimensional change per 1% moisture content change larger than 0.02% and an average moisture content in the range of 6 mass% to 10 mass%,
The moisture-proof film has a moisture permeability of 7.0 g / m ² · day or less,
The decorative sheet has a plurality of concave portions on the surface thereof, thereby having a plurality of convex portions having a relative height difference in the range of 50 μm or more and 150 μm or less, and further having a height difference on the upper surface of the convex portion. Has a plurality of concave shapes in the range of 5 μm or more and 30 μm or less,
The area ratio occupied by the plurality of recesses with respect to the surface of the decorative sheet is 40% or more and 50% or less in a top view,
A cosmetic material, wherein an area ratio occupied by the concave shape with respect to an upper surface of the convex portion is 40% or more and 50% or less in a top view.   The cosmetic material according to claim 1, wherein the surface of the decorative sheet has a 60 ° gloss value of 5 or more and 14 or less.   2. The decorative sheet according to claim 1, wherein a pattern layer, an adhesive layer, a transparent thermoplastic resin layer, and a surface protective layer are provided in this order on a thermoplastic resin substrate sheet. The cosmetic material according to claim 2.   The wood base material is one of medium density wood fiber board (MDF), high density wood fiber board (HDF), particle board (PB), softwood plywood and early-wood plywood, or two or more selected from these boards The decorative material according to any one of claims 1 to 3, wherein the decorative material is laminated. The moisture-proof film has a resin base layer and a vapor deposition layer formed on the base layer, and has a moisture permeability of 1.0 g / m ² · day or less. The cosmetic material according to any one of claims 1 to 4.   The said moisture-proof film has a surface protective layer on the said vapor deposition layer, The cosmetics described in Claim 5 characterized by the above-mentioned.

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