JP2001260109A - Facing material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide at a low cost a facing material which is excellent in an application property and excellent in various physical properties such as scratch resistance, waterproof, dimensional stability and the like. SOLUTION: A facing material is provided wherein decorative sheet is stuck to one side face of an intermediate density fiberboard of 1.00-2.00 mm thickness.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a medium density fiberboard (M
More specifically, the present invention relates to a decorative material for flooring and a wall surface (including a waist wall) having excellent scratch resistance, water resistance, dimensional stability, workability, etc. is there.

[0002]

2. Description of the Related Art Conventionally, a flooring or decorative material in which a decorative sheet is adhered to a wood-based material such as plywood, particle board, or medium density fiberboard (MDF) is used for floors and walls of houses. However, recently, medium density fiberboard (MDF) manufactured by hot pressing with wood fiber as a constituent element
However, it is often used because the fiber has almost no directionality, there is no difference in longitudinal and lateral strength, and there is no difference in expansion and contraction, and the dimensional change due to the ingress and egress of moisture hardly occurs.

[0003] By the way, when replacing the floor surface for reasons such as aging, in consideration of ease of construction and economic efficiency,
Generally, a construction method is adopted in which a new flooring material is applied from the existing floor surface, but the flooring decoration material using medium-density fiberboard (MDF) has the same thickness. Is 3.0
mm, it is difficult to replace each room or section without a step, so it is not suitable for barrier-free specifications, and it is cut by hand using a cutter etc. to the required dimensions at the time of construction This was quite difficult work (poor workability).

[0004] In addition, a decorative material for a wall provided on a wall of a detached house or an apartment, particularly a decorative material for a waist wall provided for a waist wall, that is, a so-called waist wall panel is also required at the time of construction in the same manner as described above. Manual cutting using a cutter or the like for the dimensions was a rather difficult operation (poor workability).

[0005]

Therefore, the present invention has excellent workability, is easy to be replaced, has few steps after replacement, and is excellent in various physical properties such as scratch resistance, water resistance and dimensional stability. An object of the present invention is to provide a decorative material for flooring and a decorative material for wall surfaces which are excellent in workability and excellent in various physical properties such as scratch resistance, water resistance and dimensional stability at low cost.

[0006]

Means for Solving the Problems To solve the above problems, the present inventors have first set forth a decorative material according to the present invention, which has a medium density of 1.00 to 2.00 mm. It is characterized in that a decorative sheet is attached to one surface of a fiberboard. With this configuration, it is possible to easily cut by hand using a cutter or the like to a required size on site at the time of construction, and to reduce the cost by thinning the medium density fiberboard.

[0007] The invention described in claim 2 is the first invention.
The decorative material according to any one of the preceding claims, wherein a synthetic resin moisture-proof sheet is attached to the other surface of the medium-density fiberboard. With such a configuration, it is possible to prevent a subtle dimensional change of the decorative material due to moisture absorption and desorption, and to prevent the surface of the decorative material from being absorbed by moisture (water) caused by a method of manufacturing a medium density fiberboard (MDF). Swelling can be prevented.

According to a third aspect of the present invention, in the decorative material according to any one of the first and second aspects, the medium-density fiberboard is coated and dried to have a moisture-proof property after being dried. It is characterized in that a resin layer is formed.
With such a configuration, it is possible to further prevent subtle dimensional changes of the cosmetic material due to moisture absorption and desorption and swelling of the surface of the cosmetic material due to moisture absorption (water) caused by a method of manufacturing a medium density fiberboard (MDF). it can.

The invention described in claim 4 is the first invention.
The decorative material according to the above, wherein the decorative sheet is a transparent sheet made of a synthetic resin having a surface protective layer made of an ionizing radiation-curable resin on the outermost surface on the exposed side. With this configuration, a cosmetic material having excellent surface properties such as scratch resistance, abrasion resistance, and stain resistance can be obtained.

The invention described in claim 5 is the same as the invention in claim 4.
The decorative material according to the above, wherein the surface protective layer is formed on the synthetic resin transparent sheet via a primer layer formed from an acrylic resin and a urethane resin copolymer and isocyanate. is there. With this configuration, the adhesive strength of the surface protective layer to the transparent sheet can be improved.

The invention described in claim 6 is the same as the invention in claim 5
In the decorative material described above, the synthetic resin transparent sheet is made of an olefin-based thermoplastic resin. With this configuration, it is possible to provide a decorative material that does not generate harmful gas.

The invention described in claim 7 is the same as the invention described in claim 2.
In the above-mentioned decorative material, the synthetic resin moisture-proof sheet is made of an olefin-based thermoplastic resin. With such a configuration, the moisture-proof performance is excellent, the workability is also excellent, and the cost is low.
In addition, a cosmetic material that does not generate harmful gas can be obtained.

The invention described in claim 8 is the first invention.
The decorative material according to any one of Items 1 to 7, wherein the decorative sheet is provided with a design-improving means. With this configuration, it is possible to provide a decorative material having excellent design properties.

The invention according to claim 9 is the first invention.
The decorative material according to any one of Items 1 to 8, is for flooring. By using as a decorative material for flooring in this way, a step after replacement can be reduced and barrier-free specifications can be achieved.

The invention according to claim 10 is characterized in that the decorative material according to any one of claims 1, 2, 4 to 8 is for a wall surface. In particular, by using as a waist wall decorative material, a so-called waist wall panel, a door frame, a closet frame, or a projecting dimension from a wall surface of an indoor opening frame such as a blind frame is configured to be, for example, about 10 mm. A well-fitted waist wall can be formed on the walls of detached houses and condominiums.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings and the like. FIG. 1 is a sectional view schematically showing a first basic configuration of a decorative material for flooring according to the present invention, and FIG. 2 is a schematic view showing a second basic configuration of a decorative material for flooring according to the present invention. FIG. 3 is a sectional view schematically showing a third basic configuration of the decorative material for flooring according to the present invention, and FIG. 4 is a decorative sheet used for the decorative material for flooring according to the present invention. FIG. 5 is a cross-sectional view showing another specific example of the decorative sheet used for the decorative material for flooring according to the present invention, and FIG. 6 is a sectional view showing the decorative material of the present invention. FIG. 7 is a schematic front view showing an embodiment used as a waist wall panel, and FIG.
1 is a cross-sectional view taken along line XX of FIG. 1, in which 1, 1 ′ and 1 ″ are decorative materials for flooring, 2, 2 ′ and 2 ″ are decorative sheets, and 3 is a medium density fiberboard (MDF). 4 is a synthetic resin moisture-proof sheet, 5 is a waist wall, 6 is a door frame, 7 is an indoor wall surface, 8 is a floor surface, 10 is a synthetic resin transparent sheet, 11 is a synthetic resin sheet, 20, 21, and 22 are Primer layer, 30 is a surface protective layer, 40, 41, and 42 are adhesive layers, 51 is a waist wall panel, 52 is a connecting member, 53 is a waist parting, 54
Denotes a baseboard, 60 denotes a moisture-proof resin layer, 70 denotes a concavo-convex pattern, 80 denotes a wiping ink, 90 denotes a picture layer, 91 denotes a solid printing layer, and 531,541 denote grooves.

FIG. 1 is a sectional view schematically showing a first basic structure of a decorative material for flooring according to the present invention.
The decorative material 1 for flooring comprises a synthetic sheet 2 provided with a surface protective layer 30 made of an ionizing radiation-curable resin on one surface of a transparent sheet 10 made of synthetic resin via a primer layer 20. 3) is bonded via an adhesive layer 40 so that the surface protective layer 30 of the decorative sheet 2 is exposed on one surface of the decorative sheet 2.

FIG. 2 shows a second embodiment of the decorative material for flooring according to the present invention.
FIG. 2 is a cross-sectional view schematically showing a basic configuration of the floor covering decorative material 1 ′, wherein the other surface of the medium-density fiberboard (MDF) 3 of the floor covering decorative material 1 shown in FIG. In this embodiment, a moisture-proof sheet 4 made of synthetic resin is bonded via an adhesive layer 41, and the rest is the same as the decorative material 1 for flooring shown in FIG. With this configuration, the decorative material for flooring 1 ′ is more medium-density fiberboard (MDF) than the decorative material for flooring 1 shown in FIG. 1.
Since the moisture absorption (water) of No. 3 can be reduced, swelling of the surface can be prevented.

FIG. 3 shows a third embodiment of a floor covering decorative material according to the present invention.
FIG. 3 is a cross-sectional view schematically showing a basic configuration of the floor covering decorative material 1 ″. The medium-density fiberboard (MDF) 3 of the floor covering decorative material 1 ′ shown in FIG. A resin layer 60 exhibiting moisture resistance is formed after coating and drying on the surface, and the rest is the same as the flooring decorative material 1 'shown in FIG. The resin layer 60 has a coating film formed on the tip of the medium-density fiberboard (MDF) 3 and the medium-density fiberboard (MD).
F) 3 and is impregnated and fixed to the surface layer of the medium density fiberboard (MDF) 3. With this configuration, the decorative material for flooring 1 ″ is more absorbent (water) of the medium density fiberboard (MDF) 3 than the decorative material for flooring 1 ′ shown in FIG.
Swelling can be completely prevented.

By the way, the decorative material for flooring 1 of the present invention,
The thickness of the medium density fiberboard (MDF) 3 used for 1 ′ and 1 ″ is preferably as thin as possible in consideration of workability and steps at the time of replacement, but in consideration of ease of handling, a decorative sheet is considered. It is necessary to be able to handle as one rigid decorative material for flooring by sticking together, and a thickness of approximately 1.00 to 2.00 mm is appropriate. By using a medium-density fiberboard of such a thickness, it is possible to reduce the steps at the time of replacement,
A flooring decorative material that is friendly to the living environment can be obtained, and the flooring decorative material can be easily cut to the required dimensions on site, and thus can be provided with excellent workability.

Next, the synthetic resin transparent sheet 10 used for the decorative sheet 2 includes low-density polyethylene (including linear low-density polyethylene), medium-density polyethylene, high-density polyethylene, ethylene α-olefin copolymer, and homopolypropylene. Olefinic thermoplastics such as styrene, polymethylpentene, polybutene, ethylene-propylene copolymer, propylene-butene copolymer, ethylene-vinyl acetate copolymer, saponified ethylene-vinyl acetate copolymer, and mixtures thereof Resins, thermoplastic ester resins such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyethylene naphthalate-isophthalate copolymer, polycarbonate, polyarylate, polymethyl methacrylate, polyethyl methacrylate, Acrylic thermoplastic resin such as polyethyl acrylate and polybutyl acrylate, nylon
6, non-halogen thermoplastic resins such as polyamide, thermoplastic resins such as nylon-66, and polyimide, polyurethane, polystyrene, and acrylonitrile-butadiene-styrene resins. These thermoplastic resins may be used alone or as a mixture of two or more. However, the synthetic resin transparent sheet 10 used for the decorative sheet 2 of the present invention is subjected to a design improvement means described later as a decorative material for flooring, specifically, embossing for providing a printed pattern or an uneven pattern. Therefore, these suitability are required and it is necessary to be inexpensive. Considering these, an olefin-based thermoplastic resin is preferable.

The synthetic resin transparent sheet 10 made of the olefinic thermoplastic resin may be in a non-stretched state or in a state stretched in one or two axes. Although a colored sheet to which a pigment or the like is added may be used, the thickness of the synthetic resin transparent sheet 10 is preferably about 60 to 300 μm. If necessary, the synthetic resin transparent sheet 10 may be used.
One or both surfaces may be subjected to an easy adhesion treatment such as a corona discharge treatment, a plasma treatment, and an ozone treatment. In addition, the olefin-based thermoplastic resin constituting the transparent sheet 10 made of synthetic resin, as appropriate, a well-known antioxidant, a light stabilizer, an ultraviolet ray inhibitor, or an inorganic filler for imparting flame retardancy, or In addition, various additives such as a foaming agent for imparting a design property can be added. by the way,
As the pigment used for the colored sheet, a well-known inorganic pigment is suitable in consideration of heat resistance and weather resistance.

The moisture-proof sheet 4 made of synthetic resin includes
In consideration of the moisture-proof performance and cost, or the fact that no harmful gas is generated during combustion, which has recently become a problem, a sheet made of an olefin-based thermoplastic resin is preferable. Specifically, the olefinic thermoplastic resin described in the synthetic resin transparent sheet 10 can be used, and the thickness thereof varies depending on the type of the olefinic thermoplastic resin to be used, but the moisture permeability is 30 g / m2. ² · 24hr (JISZ0208:
Measurement by cup method) or less, more preferably 20 g / m ² · 24
hr (JISZ0208: measurement by cup method) or less, and is generally 25 to 50 μm. This synthetic resin moisture-proof sheet 4 may be subjected to one or both surfaces thereof to be subjected to an easy adhesion treatment such as a corona discharge treatment, a plasma treatment or an ozone treatment.

Further, the decorative materials for flooring 1, 1 ′ of the present invention
As the resin layer 60 formed on the edge of the medium-density fiberboard (MDF) 3 constituting 1 ″, a coating film is formed on the edge of the edge of the medium-density fiberboard (MDF) 3 and penetrated into the medium-density fiberboard (MDF) 3 It is necessary to be impregnated and fixed to the surface layer of the medium-density fiberboard (MDF) 3 and is desirably formed of a known water-based resin such as an acrylic resin, a vinyl acetate resin, or a urethane resin. The reason for this is that the resin layer can easily be applied by a coating means such as a brush or a roll, and a resin layer exhibiting moisture resistance can be easily formed by drying.

Next, the decorative materials for flooring materials 1, 1 ′ of the present invention
The surface protective layer 30 formed on the outermost surface of the 1 '' is provided for imparting surface properties such as scratch resistance, abrasion resistance, and stain resistance required for decorative materials for flooring. The resin for forming the surface protective layer 30 is, for example, an epoxy resin, an acrylic resin, a urethane resin, a polyamide resin, a polyester resin, or polyethylene, polypropylene, polybutene, polybutadiene, or the like.
A copolymer of one kind of polyolefin such as polyisoprene or two or more kinds of olefins such as ethylene, propylene, butene, butadiene, isoprene, or a copolymer of α-olefin having 4 or more carbon atoms (linear low-density polyethylene) ), An ethylene-vinyl acetate copolymer, a saponified ethylene-vinyl acetate copolymer, or a mixed resin of one or more of these. As a method of forming the surface protective layer, for example,
A solution of the resin, or, a heated and melted resin is well-known gravure printing method, roll coating method, or, by appropriately using a coating means such as extrusion coating method, or, the resin film It can be formed by laminating the cured product by a well-known dry lamination method or the like, but it is particularly preferable to use an ionizing radiation-curable resin. The ionizing radiation-curable resin is a resin that undergoes a cross-linking polymerization reaction upon irradiation with ionizing radiation and changes into a three-dimensional polymer structure. Ionizing radiation is
Among electromagnetic waves or charged particle beams, those having energy quanta capable of polymerizing and crosslinking molecules include visible light, ultraviolet light (near ultraviolet light, vacuum ultraviolet light, etc.), X-rays, electron beams, ion beams, and the like. Usually, ultraviolet rays or electron beams are used. Ultraviolet light sources, high pressure mercury lamps, low pressure mercury lamps, carbon arc lamps, black light fluorescent lamps, and metal halide lamp lamps can be used as the ultraviolet light source. As the wavelength of the ultraviolet light, a wavelength range of 1900 to 3800 通常 is mainly used, and as the electron beam source, a Cockloft-Walton type, a bande-graft type, a resonance transformer type, an insulating core transformer type, or a linear type is used. A variety of electron beam accelerators, such as dynamitron type and high frequency type lamps, which emit electrons having an energy of 100 to 1000 KeV, preferably 100 to 300 KeV can be used.

The ionizing radiation-curable resin forming the surface protective layer 30 includes a radical polymerizable unsaturated group such as a (meth) acryloyl group and a (meth) acryloyloxy group, or a cationic group such as an epoxy group in a molecule. It is composed of a monomer, a prepolymer or a polymer having a polymerizable functional group (hereinafter, these are collectively referred to as a compound). These monomers, prepolymers, and polymers may be used alone or
Alternatively, a mixture of plural kinds is used. In this specification, (meta)
Acrylate means acrylate or methacrylate.

Examples of the prepolymer having a radical polymerizable unsaturated group include polyester (meth) acrylate, urethane (meth) acrylate, epoxy (meth) acrylate, melamine (meth) acrylate, triazine (meth) acrylate, and polyvinylpyrrolidone. No. This prepolymer usually has a molecular weight of about 10,000 or less. If the molecular weight exceeds 10,000, the cured resin layer has insufficient surface properties such as scratch resistance, abrasion resistance, chemical resistance and heat resistance. Although the above acrylate and methacrylate can be shared, acrylate is faster in terms of the rate of crosslinking and curing by ionizing radiation.
Acrylates are more advantageous for the purpose of curing efficiently in a short time.

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

Examples of the monomer having a radical polymerizable unsaturated group include monofunctional monomers of (meth) acrylate compounds such as methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, Methoxyethyl (meth) acrylate, methoxybutyl (meth) acrylate, butoxyethyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, N, N-
Dimethylaminomethyl (meth) acrylate, N, N-
Dimethylaminoethyl (meth) acrylate, N, N-
Diethylaminoethyl (meth) acrylate, N, N-
Diethylaminopropyl (meth) acrylate, N, N
-Dibenzylaminoethyl (meth) acrylate, lauryl (meth) acrylate, isobonyl (meth) acrylate, ethyl carbitol (meth) acrylate, phenoxyethyl (meth) acrylate, phenoxypolyethylene glycol (meth) acrylate, tetrahydrofurfuryl (meth) ) Acrylate, methoxypropylene glycol (meth) acrylate, 2- (meth) acryloyloxyethyl-2-hydroxypropyl phthalate, 2- (meth) acryloyloxypropyl hydrogen terephthalate and the like.

As the polyfunctional monomer having a radically polymerizable unsaturated group, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate,
Propylene glycol di (meth) acrylate, dipropylene glycol (meth) acrylate, neopentyl glycol 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 tri (meth) acrylate, pentaerythritol tri ( (Meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol hexa (meth) acryl Over DOO, glycerin polyethylene oxide tri (meth) acrylate, tris (meth)
Acryloyloxyethyl phosphate and the like.

The monomer having a cationically polymerizable functional group is
Prepolymer monomers having a cationically polymerizable functional group can be used.

The above-mentioned ionizing radiation-curable resin cures sufficiently when irradiated with an electron beam, but when it is cured by irradiating ultraviolet rays, a photopolymerization initiator is added as a sensitizer. Photopolymerization initiator in the case of a resin system having a radical polymerizable unsaturated group, acetophenones, benzophenones, thioxanthones, benzoin, benzoin methyl ether,
Michler benzoyl benzoate, Michler ketone, diphenyl sulfide, dibenzyl disulfide, diethyl oxide, triphenyl biimidazole, isopropyl-N, N-dimethylamino benzoate and the like can be used alone or in combination. In the case of a resin having a cationically polymerizable functional group, an aromatic diazonium salt, an aromatic sulfonium salt, a metallocene compound, a benzoinsulfonic acid ester, a freeloxysulfoxonium diallyliodosyl salt, or the like is used alone or as a mixture. be able to. Incidentally, the amount of the photopolymerization initiator added is generally 0.1 to 100 parts by weight of the ionizing radiation-curable resin.
It is about 1 to 10 parts by weight. As a method for forming a protective layer with the ionizing radiation-curable resin, for example, a solution of the ionizing radiation-curable resin, a gravure coating method,
It can be formed by coating by a known coating method such as a roll coating method. In this case, the coating amount is suitably about 5 to 30 g / m ² as a solid content, and more preferably 15 to 25 g / m ² .

When the surface protective layer 30 made of an ionizing radiation curable resin is to be further provided with scratch resistance and abrasion resistance, powdery aluminum oxide, silicon carbide,
Silicon dioxide, calcium titanate, barium titanate,
It can be achieved by adding an abrasive such as magnesium pyroborate, zinc oxide, silicon nitride, zirconium oxide, chromium oxide, iron oxide, boron nitride, diamond, gold sand and glass fiber. An appropriate ratio of the abrasive to 100 parts by weight of the ionizing radiation-curable resin is 1 to 80 parts by weight.

Next, the decorative materials for flooring 1, 1 'of the present invention
The primer layer 20 used for 1 ″ is formed of a resin composed of a copolymer of an acrylic resin and a urethane resin, and isocyanate. That is, the copolymer of the acrylic resin and the urethane resin is an acrylic polymer component having a hydroxyl group at the terminal (component A), a polyester polyol component having a hydroxyl group at both terminals (component B),
It is obtained by blending and reacting a diisocyanate component (component C) to form a prepolymer, and further adding a chain extender such as diamine (component D) to the prepolymer to extend the chain. By this reaction, a 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 a terminal. The primer layer 20 is obtained by reacting the terminal hydroxyl group of this acrylic-polyester urethane copolymer with isocyanate and curing the same.

As the component A, a linear acrylate polymer having a hydroxyl group at a terminal is used. Specifically, linear polymethyl methacrylate (PMMA) having a hydroxyl group at a terminal is preferable because it has excellent weather resistance (particularly properties against light degradation) and is easily copolymerized with urethane and made compatible. . The component A is an acrylic resin component in the copolymer, and has a molecular weight of 5,000 to 70.
Those having a weight average molecular weight of 00 are preferably used because they have particularly good weather resistance and adhesiveness. The component A
May be only those having a hydroxyl group at both ends,
Those having a conjugated double bond remaining at one end may be used in combination with those having a hydroxyl group at both ends. By mixing an acrylic polymer having a conjugated double bond remaining, a layer in contact with the primer layer 20, for example, a surface protective layer
When an ionizing radiation-curable resin is used as the resin of No. 30, the adhesion between the ionizing radiation-curable resin and the ionizing radiation-curable resin is particularly improved because the conjugated double bond of the acrylic polymer reacts with the ionizing radiation-curable resin. be able to.

The component B reacts with diisocyanate to form a polyester urethane, and forms a urethane resin component in the copolymer. As the component B, a polyester diol having a hydroxyl group at both terminals is used. The polyester diol is derived from 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. And the like. As the diol, ethylene glycol,
Examples thereof include short-chain diols such as propylene glycol, diethylene glycol, butanediol, hexanediol, and methylpentanediol, and alicyclic short-chain diols such as 1,4 cyclohexanedimethanol. Examples of the dibasic acid include adipic acid, phthalic acid, isophthalic acid, terephthalic acid, and the like. Preferred as the polyester polyol are adipic acid or a mixture of adipic acid and terephthalic acid, particularly adipic acid as the acid component, and 3% as the diol component.
-Adipate-based polyester using methylpentanediol and 1,4-cyclohexanedimethanol.

In the primer layer 20, the components B and C
The urethane resin component formed by the reaction with the above provides the primer layer 20 with flexibility and contributes to the adhesion to the synthetic resin transparent sheet 10. In addition, the acrylic resin component made of an acrylic polymer contributes to the weather resistance and the blocking resistance in the primer layer 20. In the urethane resin, the molecular weight of the component B may be within a range where a urethane resin capable of sufficiently exhibiting flexibility in the primer layer 20 can be obtained, and adipic acid or a mixture of adipic acid and terephthalic acid and 3-methylpentanediol In the case of polyester diols comprising 1,4-cyclohexanedimethanol and 1,4-cyclohexanedimethanol, the weight average molecular weight is preferably from 500 to 5,000.

As the component C, an aliphatic or alicyclic diisocyanate compound having two isocyanate groups in one molecule is used. As the diisocyanate, for example, tetramethylene diisocyanate, 2,2,4 (2,4,
4) -1,6 Hexamethylene diisocyanate, isophorone diisocyanate, 4,4'dicyclohexylmethane diisocyanate, 1,4'cyclohexyl diisocyanate, and the like. As the diisocyanate component, isophorone diisocyanate is preferred because of its excellent physical properties and cost. The total hydroxyl groups (including amino groups) of the acrylic polymer, polyester polyol, and chain extender described below when reacting the above components A to C.
And the equivalent ratio of the isocyanate groups is such that the isocyanate groups become excessive.

The above three components A, B and C were mixed at 60-120 ° C.
When reacted for about 10 hours, the isocyanate group of the diisocyanate reacts with the hydroxyl group at the end of the polyester polyol to form a polyetherester urethane resin component, and the compound in which the diisocyanate has been added to the hydroxyl group at the acrylic polymer end is also mixed, and Is formed in a state where the isocyanate groups and hydroxyl groups remain.
As a chain extender to this prepolymer, for example, a diamine such as isophorone diamine or hexamethylene diamine is added, and an isocyanate group is reacted with the chain extender. By extending the chain, the acrylic polymer component is introduced into the polyester urethane molecule. An acrylic-polyester urethane copolymer having an introduced hydroxyl group at the end can be obtained.

To this acrylic-polyester urethane copolymer, isocyanate was added, and a coating liquid was adjusted to a necessary viscosity in consideration of a coating method and a coating amount (after drying). The primer layer 20 can be formed by applying a known coating method such as a coating method or a roll coating method. The primer layer
The coating amount after drying of 20, from 1 to 20 g / m ² are suitable, preferably from 1 to 5 g / m ^2. In addition, the primer layer 20 may be a layer to which additives such as a filler such as silica fine powder, a light stabilizer, and a coloring agent are added as required in addition to the resin. In addition, any isocyanate may be used as long as it can react with hydroxyl groups of the acrylic-polyester urethane copolymer to be cross-linked and cured,
For example, divalent or higher aliphatic or aromatic isocyanates can be used, and aliphatic isocyanates are particularly desirable from the viewpoint of preventing thermal discoloration and weather resistance. Specifically, tolylene diisocyanate, xylylene diisocyanate, 4,4'-dicyclohexylmethane diisocyanate, hexamethylene diisocyanate, a monomer of lysine diisocyanate, or a multimer such as a dimer or trimer thereof, or And polyisocyanates such as derivatives (adducts) obtained by adding these isocyanates to polyols.

The adhesive forming the adhesive layers 40 and 41 for bonding the decorative sheet 2 and the synthetic resin moisture-proof sheet 4 to the medium density fiberboard (MDF) 3 is, for example, acrylic or acetic acid. By using an adhesive made of a resin such as a vinyl-based, urethane-based, or epoxy-based resin, both can be easily bonded.

Next, the decorative materials 1, 1 'for flooring of the present invention
Specific examples of the decorative sheet used in 1 ″ will be described. FIG. 4 is a cross-sectional view showing a specific example of a decorative sheet used for a decorative material for flooring according to the present invention. In the decorative sheet 2 ′, the decorative sheet 2 is an embodiment of a design improving means. Specifically, one surface of the synthetic resin transparent sheet 10 is embossed to form an uneven pattern.
After providing the wiping ink 80 in the concave portion of the concavo-convex pattern 70 by performing a wiping process from above,
A primer layer 20 is provided on the entire exposed surface, and the primer layer 20 is provided.
A transparent protective sheet 30 made of an ionizing radiation-curable resin is formed thereon, and a pattern layer 90 and a solid print layer 91 are formed on the other surface of the synthetic resin transparent sheet 10 via a primer layer 21. This decorative sheet 2 ′ is
91 of the solid printing layer and the medium density fiberboard (MDF) 3
Is bonded via an adhesive layer 40 to provide a decorative material for flooring of the present invention.

FIG. 5 is a cross-sectional view showing another specific example of a decorative sheet used for a decorative material for flooring according to the present invention. Specifically, at least one surface of the synthetic resin sheet 11 corona discharge treatment,
After performing an easy-adhesion treatment such as a plasma treatment and an ozone treatment, a primer layer 22 is provided on the easily-adhesion-treated surface (not shown), and a solid print layer 91 and a picture layer 90 are sequentially formed on the primer layer 22 by printing. Further, the synthetic resin transparent sheet 10 is pasted on the pattern layer 90 via a well-known dry lamination method via an adhesive layer 42 formed of a well-known dry lamination adhesive such as a two-component curable urethane resin, The surface of the synthetic resin transparent sheet 10 is embossed to provide an uneven pattern 70, and then, similarly to the decorative sheet 2 'shown in FIG.
After a wiping process is applied from the top of the uneven pattern 70 to fill the recesses of the uneven pattern 70 with the wiping ink 80, a primer layer 20 is provided on the surface, and a surface protection made of an ionizing radiation-curable resin is provided on the primer layer 20. This is one in which the layer 30 is formed. In the decorative sheet 2 ″, the synthetic resin sheet 11 of the decorative sheet 2 ″ and one surface of the medium-density fiberboard (MDF) 3 are connected via an adhesive layer 40 (see FIGS. 1 and 2). To make the flooring decorative material of the present invention. The synthetic resin sheet 11 is generally a colored sheet, but may be an uncolored sheet.

Next, the primer layer 21 provided on the other surface of the synthetic resin transparent sheet 10 shown in FIG. 4 is composed of the synthetic resin transparent sheet 10 made of an olefinic thermoplastic resin and the picture layer 90 or the solid print layer. It is provided to improve the adhesiveness with the printing layer such as 91, it is preferable to use the same resin as the primer layer 20 described above, the formation method is also the same as the method of forming the primer layer 20 . The primer layer 22 provided on the synthetic resin sheet 11 shown in FIG. 5 is provided for improving the adhesiveness between the synthetic resin sheet 11 and a printing layer such as the solid printing layer 91. When the resin sheet 11 is made of an olefin-based thermoplastic resin, it is preferable to use the same resin as the primer layer 20 described above, and the forming method is the same as the method of forming the primer layer 20.

The uneven pattern 70 can be formed by hot pressing or hairline processing. Examples of the concavo-convex pattern 70 include a conduit groove, surface irregularities on a slab, a texture on a cloth surface, a satin finish, a grain, a hairline, a linear groove, and the like.

The picture layer 90 and the solid printing layer
91 can be generally formed using ink by a well-known printing method such as gravure printing, offset printing, and silk-screen printing. The picture layer 90 is, for example, a wood pattern, a stone pattern, a cloth pattern, a leather pattern, a geometric pattern, a character, a symbol, a line drawing, or various abstract patterns. Solid printed with a colored ink having the following formula: 4 and 5, a configuration in which both the picture layer 90 and the solid printing layer 91 are provided is shown, but any one of the configurations may be used.

The picture layer 90 and the solid printing layer
As the ink used in 91, as a vehicle, chlorinated polyethylene, chlorinated polyolefin such as chlorinated polypropylene, polyester, polyurethane composed of isocyanate and polyol, polyacryl, polyvinyl acetate,
One or more kinds of polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, cellulose resin, polyamide resin, etc. are mixed and used, and pigments, solvents, various auxiliaries, etc. are added to form an ink. However, in consideration of environmental issues, polyester, polyurethane composed of isocyanate and polyol, polyacryl, polyvinyl acetate, cellulose resin, polyamide resin and the like can be used.
A non-chlorine type vehicle in which one or more kinds are mixed is suitable, and more preferably, one or more kinds such as polyester, polyurethane composed of isocyanate and polyol, polyacryl, polyamide type resin and the like are mixed.

By the way, the cosmetic material of the present invention is excellent in workability, easy to replace, has few steps after replacement, and is excellent in various physical properties such as scratch resistance, water resistance and dimensional stability. Although it has been explained in detail that it is an inexpensive flooring decorative material, the flooring decorative material of the present invention is not limited to such a replacement application only, and when a floor is newly constructed. The decorative material of the present invention is not limited to the floor material, and may be applied, for example, to the structure shown in FIGS.
May be used as a wall material such as a waist wall panel.

FIG. 6 is a schematic front view showing an embodiment using the decorative material of the present invention as a waist wall panel, and FIG. 7 is a sectional view taken along line XX of FIG.
The waist wall 5 is composed of a waist wall panel 51 made of a decorative material of the present invention, a connecting member 52, a waist partition 53, and a baseboard 54. Floor 8 at the bottom of
A wall covering material (not shown) such as a cloth or decorative wallpaper is attached to an upper portion of the indoor wall surface 7. In addition, normally, the upper end and the lower end of the waist wall panel 51 have grooves 531 formed in the waist partition 53 and the baseboard 54, respectively.
, 541. By using the decorative material of the present invention as a waist wall panel in this manner, the workability at the site (which can be easily cut to the required size at the site) is improved, and the wall surface of an opening frame such as a door frame is improved. For example, it is possible to form a well-fitted waist wall on a wall surface of a detached house or an apartment building having a protrusion size of about 10 mm.

[0050]

As described above, the decorative material of the present invention is a decorative material excellent in workability and excellent in various physical properties such as scratch resistance, water resistance, dimensional stability, etc. It is easy to replace when it is used, and it is possible to provide an inexpensive living environment (barrier-free) with little steps after replacement. Also, when it is used for a wall, it has an opening frame such as a door frame. For example, it is possible to provide an inexpensive waist wall that fits well on a wall surface of a detached house or an apartment building having a protruding dimension from the wall surface of, for example, about 10 mm.

[Brief description of the drawings]

FIG. 1 is a sectional view schematically showing a first basic configuration of a decorative material for flooring according to the present invention.

FIG. 2 is a sectional view schematically showing a second basic configuration of the decorative material for flooring according to the present invention.

FIG. 3 is a sectional view schematically showing a third basic configuration of the decorative material for flooring according to the present invention.

FIG. 4 is a cross-sectional view showing one specific example of a decorative sheet used for a decorative material for flooring according to the present invention.

FIG. 5 is a cross-sectional view showing another specific example of a decorative sheet used for a decorative material for flooring according to the present invention.

FIG. 6 is a schematic front view showing one embodiment using the decorative material of the present invention as a waist wall panel.

FIG. 7 is a sectional view taken along line XX of FIG. 6;

[Explanation of symbols]

 1, 1 ', 1' 'decorative material for flooring 2, 2', 2 '' decorative sheet 3 medium density fiberboard (MDF) 4 moisture-proof sheet made of synthetic resin 5 waist wall 6 door frame 7 indoor wall surface 8 floor surface 10 Synthetic resin transparent sheet 11 Synthetic resin sheet 20, 21, 22 Primer layer 30 Surface protective layer 40, 41, 42 Adhesive layer 51 Waist wall panel 52 Connecting member 53 Waist parting off 54 Baseboard, 60 Moisture-proof resin layer 70 Unevenness Pattern 80 Wiping ink 90 Picture layer 91 Solid printing layer 531, 541 Groove

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) E04F 15/04 601 E04F 15/04 601 F term (Reference) 2B260 AA11 BA19 CB04 CD03 CD04 DA05 DA18 EB19 2E110 AA42 AB04 AB05 BA03 BA04 BA12 GA05W GA07W GA32W GA33X GB42W GB62X 4F100 AK01A AK01B AK01C AK03B AK03C AK25D AK51D AL01D AP03A BA02 BA03 BA04 BA10B BA10C DB16A EC18 EJ65D EJ91C GB08 HB00 HBBJ J14D JBJ JBJ JBD

Claims (10)

[Claims] 1. A decorative material comprising a medium-density fiberboard having a thickness of 1.00 to 2.00 mm and a decorative sheet bonded to one surface thereof. 2. A decorative material according to claim 1, wherein a moisture-proof sheet made of synthetic resin is attached to the other surface of said medium-density fiberboard. 3. The makeup according to claim 1, wherein a resin layer which exhibits a moisture-proof property after being applied and dried on the tip of the medium-density fiberboard is formed. Wood. 4. The decorative material according to claim 1, wherein the decorative sheet is a transparent sheet made of a synthetic resin having a surface protective layer made of an ionizing radiation curable resin on the outermost surface on the exposed side. 5. The surface protective layer is formed on the synthetic resin transparent sheet via a primer layer formed from an acrylic resin / urethane resin copolymer and isocyanate. The cosmetic material described. 6. The decorative material according to claim 5, wherein the synthetic resin transparent sheet is made of an olefin-based thermoplastic resin. 7. The decorative material according to claim 2, wherein the synthetic resin moisture-proof sheet is made of an olefin-based thermoplastic resin. 8. The decorative material according to claim 1, wherein the decorative sheet is provided with a design improving means. 9. A decorative material according to claim 1, wherein the decorative material is for flooring. 10. A decorative material according to claim 1, wherein the decorative material is for a wall.