KR20060105562A - Materials for decorating floor - Google Patents

Abstract

The present invention provides a flooring decorative material having uniform smoothness, scratch resistance, designability, and excellent moisture resistance.

In addition, the present invention is a flooring decorative material formed by laminating a synthetic resin layer and a makeup sheet having a thickness of 100 μm or more on a wooden board,

(1) The flooring decorative material has a curved surface on which both the wood board and the corresponding synthetic resin are formed by at least one of a bearing chamfer process and a groove process,

(2) The curved surface is provided with a flooring decorative material, characterized by being covered with a coating film containing a water-resistant ink.

Flooring material, curved surface, water resistant ink, smoothness, scratch resistance, design, hygroscopicity, wood board, synthetic resin

Description

Cosmetics for Floors {Materials for decorating floor}

[Document 1] Japanese Unexamined Patent Publication No. 2000-190309

The present invention relates to a decorative material for flooring.

DESCRIPTION OF RELATED ART Conventionally, what adhered the makeup sheet on the base material containing a wooden board as a cosmetic material for floor materials is well known. For example, Japanese Patent Application Laid-Open No. 2000-190309 discloses a wood-based cosmetic material in which a makeup sheet having a thin surface layer of natural wood is adhered onto a substrate including a wood board, and a reinforcing sheet is adhered to the other surface. In the present invention, there is disclosed a wooden decorative plate for flooring, wherein the reinforcing sheet is composed of a layer that is hard to pass through the wooden resin liquid exuded from the wooden plate.

The flooring cosmetics are required to have physical properties such as uniform smoothness (flat feeling), scratch resistance (impact resistance, cast resistance, etc.), hygroscopicity and the like, and have excellent designability. In particular, the hygroscopicity is important from the viewpoint of preventing deformation of the flooring material, etc., but it is easy to be lowered when the grooving, chamfering, etc. are performed to improve the design.

The present invention provides a flooring decorative material having uniform smoothness, scratch resistance, designability, and excellent moisture resistance.

MEANS TO SOLVE THE PROBLEM As a result of diligent research, this inventor discovered that the said objective can be achieved when forming a specific process surface with respect to the flooring cosmetic material, and when the said process surface is coat | covered with water-resistant ink. It was completed.

That is, this invention relates to the following decorative cosmetics for flooring materials.

1. It is a flooring decorative material formed by laminating a synthetic resin layer and a makeup sheet having a thickness of 100 μm or more on a wooden board,

(1) The flooring decorative material has a curved surface exposed to both the wood board and the synthetic resin formed by at least one of chamfering and grooving,

(2) The curved surface is covered with a coating film containing water-resistant ink.

2. The flooring decorative material according to 1 above, wherein the curved surface is a curved surface formed by a chamfering process and is formed at an end of the flooring decorative material.

3. The flooring decorative material according to 1 or 2 above, wherein the curved surface is a curved surface that is expanded toward the outside of the flooring decorative material.

4. The floor covering according to any one of 1 to 3, wherein the curved surface where both the wood board and the synthetic resin are exposed includes an area including a boundary line between the wood board and the synthetic resin.

5. The cosmetic material for flooring according to any one of 1 to 4, wherein the synthetic resin layer is a layer containing amorphous polyethylene terephthalate.

6. The synthetic resin layer according to any one of 1 to 4 above, wherein the synthetic resin layer has a single layer or a layer structure of two or more layers, and in the case of a) a single layer, the single layer or b) at least two layers, at least the uppermost layer of the synthetic resin layer is Flooring material that is a mixed layer containing A-PET and PETG.

1. Flooring Cosmetic

The flooring decorative material of the present invention is a flooring decorative material formed by laminating a synthetic resin layer and a makeup sheet having a thickness of 100 µm or more on a wooden board,

(1) The flooring decorative material has a curved surface on which both the wood board and the corresponding synthetic resin are formed by at least one of chamfering and grooving,

(2) The surface is covered with a coating film containing a water-resistant ink.

(Wooden board)

As a wood board used by this invention, wood boards, such as a wood veneer, particle board, and a medium-density fiber board (MDF), including trees, such as a cedar, a cypress, a king, and teak, are mentioned, for example.

Although the thickness of a wooden board is not specifically limited, About 3-15 mm is preferable and about 6-12 mm is more preferable.

(Synthetic resin layer)

On the wooden board, a synthetic resin layer (a backer layer, which is a so-called backer layer) having a thickness of 100 µm or more is laminated. Although the thickness of a synthetic resin layer should just be 100 micrometers or more, 250 micrometers or more are preferable. As an upper limit, it is about 800 micrometers, and 500 micrometers or less are preferable. The said synthetic resin layer provides uniform smoothness, favorable flaw resistance, etc. to the surface of the flooring decorative material. In addition, by laminating the synthetic resin layer, the flooring decorative material has good designability (non-feeling and three-dimensional feeling).

A single layer may be sufficient as the said synthetic resin layer, and the structure which consists of two or more layers may be sufficient. When making it two or more layers, the lamination | stacking method can be well-known methods, such as an extrusion method, for example.

The material of the synthetic resin layer is not particularly limited. For example, polyethylene (high density polyethylene, medium density polyethylene, low density polyethylene), vinyl chloride resin, polystyrene, polypropylene, methacryl resin, acrylonitrile styrene resin, polyamide resin, acrylonitrile butadiene styrene resin, polyimide Resin, polyamideimide resin, fluororesin, urethane resin, polysulfone, polycarbonate, polyacetal, polyphenylene ether, polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyarylate, etc. have. Moreover, amorphous polyethylene terephthalate, what is called A-PET (Mitsubishi Chemical Corporation: Nova Clear (brand name)), PETG (glycol modified polyethylene terephthalate), etc. can also be used preferably. Among these, the coating material of this invention can be used suitably for the layer containing amorphous polyethylene terephthalate (A-PET).

It is preferable that especially a synthetic resin layer has one layer (single layer) or two or more layer structure, and the uppermost layer is a mixed layer containing A-PET, PETG, or PEN. That is, in the case of a single | mono layer, in the case of the said single | mono layer and two or more layers, the layer closest to a makeup layer needs to be the said mixed layer. This uppermost layer is laminated | stacked on a makeup sheet via an adhesive bond layer and / or a primer layer. In this invention, adhesiveness with a makeup sheet can be improved more by making the uppermost layer into the said mixed layer. In the case of a single layer, this single layer becomes a mixed layer.

When a synthetic resin layer has a layer structure of three or more layers, it is preferable that at least the uppermost layer and the lowermost layer are a mixed layer containing A-PET and PETG or PEN. Thereby, not only the adhesiveness with a makeup sheet, but also the adhesiveness of a synthetic resin layer and a wooden board can be improved. The uppermost layer is the layer closest to the makeup sheet as described above. The lowest layer refers to the layer closest to the laminated wooden board.

As a form of a preferable synthetic resin layer, (1) this synthetic resin layer has a layer structure which consists of three layers, (2) the uppermost layer and the lowest layer are the mixed layers containing A-PET and PETG or PEN, and a deep layer The layer containing this A-PET is mentioned.

The mixed layer includes A-PET and PETG or PEN, but may contain other resin components. For example, polyester-based resin, such as polyethylene naphthalate, polybutylene terephthalate, and polyarylate, is mentioned. In this invention, it is especially preferable to set it as the two-component mixed layer containing A-PET, PETG, or PEN. Also in the case of a two-component system, additives other than polyester resin may be contained.

Content of A-PET, PETG, or PEN in a mixed layer can be set suitably. In this invention, it is preferable to make PETG or PEN about 20 to 80 weight%, especially 40 to 60 weight% in 100 weight% of total of A-PET, PETG, or PEN in the said two-component system.

It is preferable that a wooden board and a synthetic resin layer are laminated | stacked through the urethane type adhesive bond layer and / or a urethane type primer layer, for example.

It is preferable that the decorative material for floor coverings of this invention performs a water-resistant process with respect to the surface which is not coat | covered with the synthetic resin layer or the makeup sheet mentioned later. Accordingly, the water resistance is further increased. The water treatment can be carried out using, for example, a known water resistant ink (including a pigment or the like if necessary).

(Cosmetic sheet)

Although the kind of cosmetic sheet used by this invention is not specifically limited, For example, the cosmetic sheet which laminates a pattern layer (solid ink layer, a pattern ink layer), a transparency resin layer, and a surface protective layer on a base material sheet in order desirable. Hereinafter, this makeup sheet is demonstrated.

The base sheet is a woven fabric including foil paper, fine paper, kraft paper, Japanese paper, titanium paper, resin impregnated paper, paper such as paper reinforcement paper, wood fiber, glass fiber, asbestos, polyester fiber, vinylon fiber, rayon fiber, and the like. 1 type, or 2 or more types of laminated bodies, such as synthetic resin sheets, such as a nonwoven fabric, polyolefin, polyester, polyacryl, polyamide, polyurethane, and polystyrene, are mentioned. As thickness of a base material sheet, about 20-300 micrometers is suitable. In addition, the base sheet may be colored by appropriately adding a pigment or the like, and may be subjected to corona discharge treatment, plasma treatment, ozone treatment, or the like as necessary.

The pattern layer is composed of a patterned ink layer and a solid ink layer. A pattern layer can be normally formed using ink by printing methods, such as gravure printing, offset printing, and silkscreen printing. Examples of the pattern ink layer include wood grain, stone grain, cloth texture, leather pattern, geometric pattern, letters, symbols, line drawing, and various abstract pattern patterns. The solid ink layer is obtained by solid printing with the concealable coloring ink. The pattern layer may be composed of both a patterned ink layer and a solid ink layer, or may be composed of only one.

Examples of the ink used for the design layer include a chlorinated polyolefin such as chlorinated polyethylene and chlorinated polypropylene, polyester, polyurethane containing polyisocyanate and polyol, polyacryl, polyvinyl acetate, polyvinyl chloride and vinyl chloride as a binder resin. -A vinyl acetate copolymer, a cellulose resin, a polyamide resin, etc. can be used 1 type or in mixture of 2 or more types, and can add the pigment, a solvent, various auxiliary agents, etc., and can ink. Among these, in consideration of environmental problems, adhesion to the printed surface, and the like, it is preferable to mix one or two or more kinds of polyurethanes, polyacryl, polyamide-based resins such as polyesters, isocyanates and polyols, and the like. .

The transparent resin layer is not particularly limited as long as it is a transparent resin layer, and can be preferably formed of, for example, a transparent thermoplastic resin.

Specifically, soft, semi-rigid or hard polyvinyl chloride, polyethylene terephthalate, polybutylene terephthalate, polyamide, polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-acrylic acid ester air Copolymer, ionomer, acrylic acid ester, methacrylic acid ester, etc. are mentioned. Among the above, polyolefin resin, such as polypropylene, is preferable.

The transparent resin layer may be colored. In this case, a coloring agent can be added to a thermoplastic resin. As a coloring material, the pigment or dye used for a design layer can be used.

The transparent resin layer may include various additives such as fillers, matting agents, foaming agents, flame retardants, lubricants, antistatic agents, antioxidants, ultraviolet absorbers, light stabilizers, radical scavengers, and soft components (e.g. rubber). have.

The surface protective layer is provided to impart surface properties such as scratch resistance, abrasion resistance, water resistance, and stain resistance required for the makeup sheet. As resin which forms this surface protection layer, curable resin, such as thermosetting resin or ionizing radiation curable resin, is preferable. In particular, ionizing radiation curable resins are preferred from the viewpoint of high surface hardness, productivity, and the like.

Examples of the thermosetting resin include unsaturated polyester resins, polyurethane resins (including two-component curable polyurethanes), epoxy resins, amino alkyd resins, phenol resins, urea resins, diallyl phthalate resins, melamine resins, and guar. Namin resins, melamine-urea co-condensation resins, silicon resins, polysiloxane resins, and the like.

Hardening agents, such as a crosslinking agent and a polymerization initiator, and a polymerization accelerator can be added to the said resin. For example, an isocyanate, an organic sulfonate, etc. can be added to an unsaturated polyester resin, a polyurethane resin, etc. as a hardening | curing agent, an organic amine, etc. can be added to an epoxy resin, and peroxides, such as methyl ethyl ketone peroxide, and azoiso Radical initiators, such as butylnitrile, can be added to unsaturated polyester resin.

As a method of forming a surface protection layer with thermosetting resin, the method of apply | coating a solution of thermosetting resin by a coating method, such as a roll coating method and the gravure coating method, and drying and hardening is mentioned, for example. As application amount of a solution, it is about 5-30 micrometers in solid content, Preferably it is about 15-25 micrometers.

The ionizing radiation curable resin is not limited as long as it is a resin that causes crosslinking polymerization reaction by irradiating ionizing radiation and changes to a three-dimensional polymer structure. Ionizing radiation means having energy both capable of polymerizing and crosslinking molecules in electromagnetic waves or charged particle beams. For example, visible light, ultraviolet rays (near ultraviolet rays, vacuum ultraviolet rays, etc.), X-rays, electron rays, ion rays, and the like. Although there are, in particular, it is preferable to use ultraviolet rays, electron beams and the like.

As an ultraviolet source, light sources, such as an ultrahigh pressure mercury lamp, a high pressure mercury lamp, a low pressure mercury lamp, a carbon arc lamp, a black light fluorescent lamp, and a metal halogen lamp, can be used. As wavelength of an ultraviolet-ray, the wavelength range about 190-380 nm can be used. As the electron beam source, for example, various electron beam accelerators, such as a coke croft walt type, a vandraft type, a resonant transformer type, an insulation core transformer type, a straight type, a dynamtron type, and a high frequency type, can be used. Generally as an electron beam, about 100-1000 keV, Preferably, 100-300 keV can be used. The irradiation amount of an electron beam can be about 2-15 Mrad normally.

The ionizing radiation curable resin includes monomers, prepolymers or polymers having a radical polymerizable unsaturated group such as a (meth) acryloyl group, a (meth) acryloyloxy group, or a cationically polymerizable functional group such as an epoxy group in a molecule thereof (hereinafter, Collectively referred to as compound). These monomers, prepolymers and polymers may be used alone or in combination of two or more. In addition, in this specification, (meth) acrylate is used by the meaning of an acrylate or a methacrylate.

As the prepolymer having a radical polymerizable unsaturated group, polyester (meth) acrylate, urethane (meth) acrylate, epoxy (meth) acrylate, melamine (meth) acrylate, triazine (meth) acrylate, polyvinyl Pyrrolidone etc. are mentioned. As for this prepolymer, the thing of molecular weight about 10000 or less is used normally. When the molecular weight exceeds 10000, surface properties such as scratch resistance, abrasion resistance, chemical resistance and heat resistance of the cured resin layer are insufficient. Although the above-mentioned acrylate and methacrylate can be used in common, acrylate is fast in terms of the crosslinking curing rate in ionizing radiation, and thus acrylate is advantageous for the purpose of curing at high speed and efficiently in a short time.

Examples of the prepolymer having a cationically polymerizable functional group include epoxy resins such as bisphenol epoxy resins, novolac epoxy resins and alicyclic epoxy resins, aliphatic vinyl ethers, aromatic vinyl ethers, urethane vinyl ethers, and ester vinyl ethers. Prepolymers, such as vinyl ether resin, a cyclic ether compound, and a spiro compound, are mentioned.

As a monomer which has a radically polymerizable unsaturated group, it is a monofunctional monomer of a (meth) acrylate compound, for example, methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, methoxyethyl ( Meth) acrylate, methoxybutyl (meth) acrylate, butoxyethyl (meth) acrylate, 2ethylhexyl (meth) acrylate, N, N-dimethylaminomethyl (meth) acrylate, N, N-dimethyl Aminoethyl (meth) acrylate, N, N-diethylaminoethyl (meth) acrylate, N, N-diethylaminopropyl (meth) acrylate, N, N-dibenzylaminoethyl (meth) acrylate, Lauryl (meth) acrylate, isobonyl (meth) acrylate, ethylcarbitol (meth) acrylate, phenoxyethyl (meth) acrylate, phenoxypolyethylene glycol (meth) acrylate, tetrahydrofurfuryl (meth ) Acrylate, methoxypropyl Glycol (meth) acrylate, and the like can be mentioned 2- (meth) oxyethyl-2-hydroxypropyl phthalate with an acrylic, 2- (meth) acryloyloxyethyl hydrogen propyl terephthalate.

As the polyfunctional monomer having a radical polymerizable unsaturated group, for example, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, and propylene glycol di ( Meth) acrylate, dipropylene glycol (meth) acrylate, neopentylglycol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, 1,9-nonanediol di (meth) acrylate, Tetraethylene glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate, bisphenol-A-di (meth) acrylate, trimethylolpropane tri (meth) acrylate, trimethylolpropane ethylene oxide tree (meth ) Acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol To four (meth) acrylate, and glycerin ethylene oxide tri (meth) acrylate, tris (meth) acrylate and the like oxyethyl phosphate. As a monomer which has a cationically polymerizable functional group, the monomer of the prepolymer which has the said cationically polymerizable functional group can be used.

The ionizing radiation curable resin sufficiently cures when irradiated with an electron beam, but in the case of curing by irradiating with ultraviolet rays, a photopolymerization initiator is added as a sensitizer. The photoinitiator in the case of resin system which has a radically polymerizable unsaturated group, for example, acetophenones, benzophenones, thioxanthones, benzoin, benzoin methyl ether, mihirabenzoyl benzoate, mihiraketone, di One or more types, such as phenyl sulfide, dibenzyl disulfide, diethyl oxide, triphenyl biimidazole, and isopropyl-N, N- dimethylamino benzoate, can be used. In addition, in the case of the resin system which has a cationically polymerizable functional group, 1 or more types, such as an aromatic diazonium salt, an aromatic sulfonium salt, a metallocene compound, a benzoin sulfonic acid ester, a furyloxy sulfoxium diallyl iodide salt, can be used, for example. Can be.

Although the addition amount of a photoinitiator is not specifically limited, Generally, it is about 0.1-10 weight part with respect to 100 weight part of ionizing radiation curable resins.

As a method of forming a surface protection layer from an ionizing radiation curable resin, the solution of an ionizing radiation curable resin can be apply | coated by application methods, such as the gravure coating method and the roll coating method, for example. As application amount of a solution, it is about 5-30 micrometers as solid content, Preferably it is about 15-25 micrometers.

What is necessary is just to mix | blend an inorganic filler, when providing scratch resistance and abrasion resistance further to the surface protection layer formed from the ionizing radiation hardening type resin. As the inorganic filler, for example, 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, diamond, gold steel, glass Fiber, and the like.

As addition amount of an inorganic filler, it is about 1-80 weight part with respect to 100 weight part of ionizing radiation curable resins.

Lamination | stacking of each layer forms a printing layer (solid ink layer, a patterned ink layer) in order on one side of a base material sheet, for example, and then uses well-known dryness, such as a two-component curable urethane resin, on a design layer. It can carry out by the method of dry laminating a transparent resin layer through the adhesive agent for laminations, or laminating | stacking by the T-die extrusion method, etc., and also forming a surface protective layer.

Uneven | corrugated shape can also be formed by embossing from the surface protection layer side. The uneven shape can be formed by hot pressing, hairline processing, or the like. Concave-convex shapes include conduit grooves, slab surface concave-convex, cloth surface textures, checkered patterns, sand grains, hairlines, and line grooves.

(Curved surface)

The decorative material for floor coverings of this invention has the curved surface by which both the wood board and this synthetic resin formed by 1 or more types of the chamfering process and the grooving process were exposed. Both chamfering and grooving can be carried out by a known tool such as tenon or gang saw.

Specifically, the vertical groove | channel, horizontal groove | channel, etc. which consist of a curved surface are mentioned. Moreover, the chamfer part comprised with the curved surface formed in the edge part of the decorative material for floor coverings, etc. are mentioned.

Grooves such as vertical grooves and horizontal grooves are often formed in the flooring decorative material. However, by making the surface constituting the grooves a curved surface, the walking feeling of the floor surface formed by applying the flooring decorative material is increased. Moreover, in the case of a curved surface, the soft design which is rich in three-dimensional feeling is added compared with the conventional V shape.

In this curved surface, both the wood board and the synthetic resin are exposed. Since the exposed surface has high hygroscopicity, it is necessary to make the hygroscopicity of the flooring decorative material perfect. Therefore, the flooring decorative material of this invention coat | covers the curved surface with the coating film containing water resistant ink. The water resistant ink is not particularly limited as long as it can impart good water resistance to the exposed surface, but for example, a water resistant ink containing an acrylic urethane resin as the resin component is preferable. Hereinafter, the above water resistant ink will be described.

2. Water resistant ink

The water resistant ink contains an acrylic urethane resin as a resin component. It does not specifically limit as acryl urethane type resin, A well-known thing or a commercial item can also be used. For example, what compounded by crosslinking the reaction product of an acryl polyol and an isocyanate compound, the acrylic resin which has a functional group, and the urethane resin which has a functional group, etc. are mentioned.

In particular, acrylic urethane-based resins include keto group-containing acrylic resins and hydrazide group-containing urethane resins in that high adhesion to synthetic resin layers (particularly olefin resins) is obtained, as well as more excellent water resistance, chemical resistance, scratch resistance, and the like. It is preferable that it is obtained by mixing. By such mixing, the acrylic resin and the urethane resin are crosslinked by a keto group and a hydrazide group, and the acrylic resin and the urethane resin are compounded. And in the aqueous emulsion (urethane / acrylic complex emulsion) of this composite resin, the particle | grains of such resin are disperse | distributed as a composite particle in which an acrylic resin component exists inside a particle and a urethane resin component exists outside a particle | grain. A commercial item can also be used as such a composite emulsion. For example, the product name "Boncoat CG-5030" (made by Dainippon Ink & Chemical Co., Ltd.), two-component curable emulsion (main material: W-SF, curing agent: W-SF curing agent, both Showa Ink High School Show, etc.) Can be used.

Although the ratio of the acrylic resin component and the urethane resin component in the said urethane / acrylic composite emulsion is not limited, It is preferable that the urethane resin component is 20-40 weight% in 100 weight% of two components in total. By setting it in such a range, adhesiveness with a synthetic resin layer can be improved more.

The content of the acrylic urethane-based resin in the water-resistant ink can be appropriately set depending on the type of resin and the like, but generally it is preferably about 5 to 60% by weight, particularly 20 to 40% by weight.

Moreover, crosslinking degree can also be raised by using a hardening | curing agent with respect to an acrylurethane resin. For example, an isocyanate type hardening | curing agent, an epoxy type hardening | curing agent, a melamine type hardening | curing agent, an aziridine type hardening | curing agent, etc. are mentioned. In this invention, it is preferable to use an isocyanate type hardening | curing agent especially from a viewpoint which can improve low temperature crosslinking performance, weather resistance, water resistance, etc. more. Although content of a hardening | curing agent changes also with kinds etc. of the hardening | curing agent to be used, it can usually be made into about 20-70 weight part with respect to 100 weight part of acrylic urethane resin.

Moreover, it is preferable to contain a silicone in this water resistant ink. By addition of silicone, a more excellent defoaming effect, a water repellent effect, etc. can be obtained. The amount of silicon added may be 0.5 to 5% by weight in the water resistant ink.

In this water resistant ink, the additive contained in a well-known water resistant ink can also be mix | blended. For example, a coloring material (pigment, dye), a viscosity modifier, an extender pigment, etc. can be used.

Although water is mainly used as a solvent in this water resistant ink, you may use together a water-soluble organic solvent as needed. For example, in addition to alcohols, such as isopropyl alcohol, glycols, glycol ethers, etc. can also be used.

Solid content of this water resistant ink can be suitably determined in accordance with the kind of component to be used, etc. normally in the range of 5 to 80 weight%.

The water-resistant ink may be in the form of a solution, an emulsion or the like, but is preferably in the form of an emulsion.

The method of forming the coating film containing the water resistant ink is not limited, and may be performed by printing or the like, in addition to application by a brush, roller, spray, or the like. In particular, in a flooring material or the like, a method of applying the ink to the entire surface from the top of the makeup layer by coating or the like and then scratching the ink provided in addition to the groove portion with a roller or the like can be preferably used.

In the flooring decorative material of the present invention, a synthetic resin layer and a decorative sheet having a thickness of 100 µm or more are laminated. The part coat | covered with these synthetic resin layers and a makeup sheet has a flat feeling, and its hygroscopicity is high.

The flooring decorative material of the present invention has a curved surface on which both the wood board and the synthetic resin formed by at least one of chamfering and grooving are exposed. Chamfering and groove portions are curved surfaces (especially curved surfaces inflated toward the outside of the floor covering) (i.e. curved surfaces not forming recesses in the floor covering), curved surfaces expanded toward the groove holes For this reason, the flooring decorative material has a soft design which is rich in three-dimensional feeling. In addition, since the processed surface is a curved surface, the floor surface obtained by connecting a plurality of such flooring decorative materials is excellent in walking feeling.

Since the said curved surface formed by 1 or more types of the chamfering process and the grooving process is coat | covered with the coating film containing water-resistant ink, the cosmetic material for floor coverings of this invention is good moisture absorption resistance.

In the flooring decorative material of the present invention, a synthetic resin layer having a thickness of 100 µm or more is laminated on a wooden board, and the surface of the flooring decorative material has a uniform smoothness, good scratch resistance and the like. In addition, by laminating the synthetic resin layer, the flooring decorative material has good design (solidness and three-dimensional feeling).

Claims (6)

It is a flooring decorative material in which a synthetic resin layer and a makeup sheet of 100 micrometers or more in thickness are laminated on a wooden board, (1) The flooring decorative material has a curved surface on which both the wood board and the corresponding synthetic resin are formed by at least one of a bearing chamfer process and a groove process, (2) The curved surface is covered with a coating film containing water-resistant ink. The flooring decorative material according to claim 1, wherein the curved surface is a curved surface formed by chamfering, and is formed at an end portion of the flooring decorative material. The flooring decorative material according to claim 1, wherein the curved surface is a curved surface inflated toward the outside of the flooring decorative material. The floor covering cosmetic material according to claim 1, wherein the curved surface where both the wood board and the synthetic resin are exposed is an area including a boundary line between the wood board and the synthetic resin. The cosmetic material for flooring according to claim 1, wherein the synthetic resin layer is a layer containing amorphous polyethylene terephthalate. The synthetic resin layer according to claim 1, wherein the synthetic resin layer has a single layer or a layer structure of two or more layers. Flooring material that is a mixed layer containing.