JP2006272737A - Decorative material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decorative material comprehensively excellent in surface properties such as oil resistance, antifouling property, abrasion resistance and resistance to margarine. <P>SOLUTION: The decorative material comprises a pattern layer and/or a colored layer and a surface protection layer on a base material. The base material is an oilproof paper treated with a fluorine-based sizing agent which has a value of ≥4 when measured by the Japan TAPPI Paper and Pulp Testing Method No. 41:2000, and the surface protection layer is a crosslinked, cured product of an electron ray curable resin composition. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a cosmetic material having a surface protective layer obtained by cross-linking and curing an electron beam curable resin composition using oil-resistant paper as a base material, such as oil resistance, stain resistance, abrasion resistance, and marling resistance. The present invention relates to a cosmetic material having excellent surface properties.

In the case of cosmetic materials used for building interior materials such as walls, doors and other furniture and surface materials such as furniture, surface properties such as wear resistance and contamination resistance are usually required. After the pattern layer is printed on a plastic substrate, the surface layer is coated with an ionizing radiation curable resin paint of unsaturated polyester prepolymer to form a coating film, and the coating film is cross-linked with an electron beam. A decorative sheet or the like on which a cured surface resin layer is formed has been proposed (see, for example, Patent Document 1). Thus, when a surface resin layer obtained by crosslinking and curing an ionizing radiation curable resin composed of a monomer, a prepolymer or the like with ionizing radiation such as an electron beam is provided on the outermost surface layer of the decorative sheet, the high crosslinkability thereof Therefore, a decorative sheet having excellent surface properties such as wear resistance and stain resistance can be obtained.
On the other hand, in a decorative material to be applied to the outer surface of a kitchen or a cupboard, oil resistance is also required, and an oil-resistant decorative printing sheet using thin paper impregnated with an oil-resistant resin has been proposed (for example, see Patent Document 2). . However, the oil-resistant decorative sheets that have been proposed so far do not necessarily completely satisfy the surface properties such as oil resistance, but have surface properties such as oil resistance, stain resistance, wear resistance and marling resistance. There was a need for comprehensively superior cosmetics.

Japanese Patent Publication No.49-31033 JP-A-8-118554

  In view of the above problems, an object of the present invention is to provide a cosmetic material having excellent surface properties such as stain resistance, abrasion resistance, and marling resistance in addition to oil resistance.

  As a result of intensive studies to achieve the above object, the inventors of the present invention use a specific oil-resistant paper as a base material and a surface protective layer obtained by crosslinking and curing an electron beam curable resin composition. Thus, it has been found that a cosmetic material excellent in surface physical properties such as stain resistance, abrasion resistance and marling resistance in addition to oil resistance can be obtained. The present invention has been completed based on such findings.

That is, the present invention
(1) A decorative material having a pattern layer and / or a colored layer and a surface protective layer on a substrate, the substrate being a JAPAN TAPPI paper pulp test method No. 1 41: A cosmetic material which is an oil-resistant paper treated with a fluorine-based sizing agent having a value measured by the 2000 method of 4 or more, and the surface protective layer is a cross-linked and cured product of an electron beam curable resin composition,
(2) The cosmetic material according to (1) above, wherein the ink used for the pattern layer and / or the colored layer contains titania whose oil absorption measured by JIS K5101 (linseed oil) is 20 g / 100 g or less,
(3) The decorative material according to the above (1) or (2) having a primer layer containing an acrylic resin between the pattern layer and / or the colored layer and the surface protective layer, and (4) the above (1) to (1) A decorative board in which the decorative material according to any one of (3) is attached to a substrate,
Is to provide.

  ADVANTAGE OF THE INVENTION According to this invention, in addition to oil resistance, the cosmetics excellent in surface physical properties, such as stain resistance, abrasion resistance, and marling resistance, can be provided.

A typical structure of the decorative material of the present invention will be described with reference to FIG. FIG. 1 is a schematic view showing a cross section of a decorative material 1 of the present invention. In the example shown in FIG. 1, a uniform and uniform colored layer 3, a pattern layer 4, a uniform and uniform primer layer 5 covering the entire surface of the substrate 2, and a surface protective layer in which an electron beam curable resin composition is crosslinked and cured. 6 are stacked in this order.
The decorative material of the present invention has a JAPAN TAPPI paper pulp test method No. The oil-resistant paper treated with a fluorine-based sizing agent having a value measured by the 41: 2000 method (hereinafter referred to as “oil resistance”) of 4 or more is used. When the oil resistance is 4 or more, sufficient oil resistance is obtained. From the above points, the oil resistance is preferably 5 or more, and more preferably 7 or more. The upper limit of the oil resistance is not particularly defined, but is preferably 12 or less because of manufacturing restrictions.
There are no particular limitations on the papers used as the paper base material used as the base of the oil-resistant paper, and thin paper, kraft paper, titanium paper and the like can be used. Various types of fluorine-based sizing agents can be mentioned and are not particularly limited, and examples thereof include perfluoroalkyl acrylate esters and fluorine-based resins. As a treatment method with a fluorine-based sizing agent, a method of impregnation after papermaking or a method of filling in papermaking can be employed. In addition, these paper base materials may be added with a resin such as an acrylic resin, a styrene butadiene rubber, a melamine resin, or a urethane resin in order to prevent inconsistency.
In addition, the substrate 2 may be subjected to a treatment such as forming a primer layer, or a coating for adjusting the color or a pattern from a design viewpoint may be formed in advance.
Although there is no restriction | limiting in particular about the thickness of the base material 2, Basic weight is about 20-150 g / m < ² > normally, Preferably it is the range of 30-100 g / m < ² >.

The uniform and uniform colored layer 3 covered over the entire surface shown in FIG. 1 is also referred to as a concealing layer or a full surface solid layer provided as desired for the purpose of improving the design of the decorative material of the present invention. The intended color is given to the surface of the substrate 2. Usually, it is formed with an opaque color, but it may be formed with a colored transparent color to make use of the pattern of the base. When making use of the fact that the base material 2 is white, or when the base material 2 itself is appropriately colored, it is not necessary to form the colored layer 3.
As the ink used for forming the colored layer, an ink in which a binder, a colorant such as a pigment or a dye, an extender pigment, a solvent, a stabilizer, a plasticizer, a catalyst, or a curing agent is appropriately mixed is used. The binder is not particularly limited, and examples thereof include polyurethane resins, vinyl chloride / vinyl acetate copolymer resins, vinyl chloride / vinyl acetate / acrylic copolymer resins, chlorinated polypropylene resins, acrylic resins, and polyesters. Resin, polyamide resin, butyral resin, polystyrene resin, nitrocellulose resin, cellulose acetate resin and the like. Of these, a hydrophilic resin is preferable from the viewpoint of obtaining sufficient oil resistance, and specifically, an acrylic resin is preferable. It is also preferable to treat the surface of the resin so as to be hydrophilic. These resins can be used singly or in combination of two or more.
Colorants include carbon black (black), iron black, titanium white, antimony white, yellow lead, titanium yellow, petal, cadmium red, ultramarine, cobalt blue and other inorganic pigments, quinacridone red, isoindolinone yellow, phthalocyanine Organic pigments or dyes such as blue, metallic pigments composed of scaly foil pieces such as aluminum and brass, pearlescent pigments composed of scaly foil pieces such as titanium dioxide-coated mica and basic lead carbonate, and the like are used.
Moreover, it is preferable to contain the titania whose oil absorption measured by JISK5101 (linseed oil) is 20 g / 100g or less in the ink used for formation of a colored layer. By containing these titanias, the oil resistance can be further improved.
The colored layer 3 is preferably a so-called solid print layer having a thickness of about 1 to 20 μm.

The pattern layer 4 shown in FIG. 1 gives decorativeness to the base material 2 and is formed by printing various patterns using ink and a printing machine. As patterns, there are stone patterns imitating the surface of rocks such as wood grain patterns, marble patterns (for example, travertine marble patterns), fabric patterns imitating cloth or cloth patterns, tiled patterns, brickwork patterns, etc. There are also patterns such as marquetry and patchwork that combine these. These patterns are formed by multicolor printing with the usual yellow, red, blue and black process colors, as well as by multicolor printing with special colors prepared by preparing the individual color plates that make up the pattern. Is done. As the pattern ink used for the pattern layer 4, the same ink as that used for the colored layer 3 can be used.
In addition, the ink used for forming the pattern layer preferably contains titania having an oil absorption of 20 g / 100 g or less as measured by JIS K5101 (linseed oil), similarly to the colored layer. By containing these titanias, the oil resistance can be further improved.

The primer layer 5 shown in FIG. 1 is a layer provided as desired. When the colored layer 3, the pattern layer 4 and the like are provided on the substrate 2, these surfaces are smoothed, and the surface protective layer 6 It fulfills the function of improving the adhesiveness of. As the primer layer 5, a resin such as a polyurethane resin, a polyester resin, a polyamide resin, or butyral is usually used. In the decorative material of the present invention, it is preferable to use an acrylic resin as the primer layer. Oil resistance is further improved by using acrylic resin.
The primer layer 5 also has a function of preventing the ionizing radiation curable resin constituting the surface protective layer 6 from penetrating into the substrate 2.

Next, the surface protective layer 6 is composed of a material obtained by crosslinking and curing the electron beam curable resin composition as described above. Here, the electron beam curable resin composition refers to a resin composition that crosslinks and cures when irradiated with an electron beam. Specifically, it can be appropriately selected from polymerizable monomers, polymerizable oligomers, or prepolymers conventionally used as electron beam curable resin compositions.
Typically, a (meth) acrylate monomer having a radical polymerizable unsaturated group in the molecule is suitable as the polymerizable monomer, and among them, a polyfunctional (meth) acrylate is preferable. Here, “(meth) acrylate” means “acrylate or methacrylate”. The polyfunctional (meth) acrylate is not particularly limited as long as it is a (meth) acrylate having two or more ethylenically unsaturated bonds in the molecule. Specifically, ethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, neopentyl glycol di (meth) ) Acrylate, polyethylene glycol di (meth) acrylate, hydroxypivalate neopentyl glycol di (meth) acrylate, dicyclopentanyl di (meth) acrylate, caprolactone-modified dicyclopentenyl di (meth) acrylate, ethylene oxide-modified phosphate di ( (Meth) acrylate, allylated cyclohexyl di (meth) acrylate, isocyanurate di (meth) acrylate, trimethylolpropane tri (meth) acrylate, ethylene oxide modified trimethylo Propane tri (meth) acrylate, dipentaerythritol tri (meth) acrylate, propionic acid modified dipentaerythritol tri (meth) acrylate, pentaerythritol tri (meth) acrylate, propylene oxide modified trimethylolpropane tri (meth) acrylate, tris ( Acryloxyethyl) isocyanurate, propionic acid modified dipentaerythritol penta (meth) acrylate, dipentaerythritol hexa (meth) acrylate, ethylene oxide modified dipentaerythritol hexa (meth) acrylate, caprolactone modified dipentaerythritol hexa (meth) acrylate, etc. Is mentioned. These polyfunctional (meth) acrylates may be used singly or in combination of two or more.

  In the present invention, a monofunctional (meth) acrylate can be used in combination with the polyfunctional (meth) acrylate as long as the object of the present invention is not impaired, for the purpose of lowering the viscosity. Examples of monofunctional (meth) acrylates include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, pentyl (meth) acrylate, hexyl (meth) acrylate, cyclohexyl ( Examples include meth) acrylate, 2-ethylhexyl (meth) acrylate, lauryl (meth) acrylate, stearyl (meth) acrylate, and isobornyl (meth) acrylate. These monofunctional (meth) acrylates may be used alone or in combination of two or more.

  Next, as the polymerizable oligomer, an oligomer having a radical polymerizable unsaturated group in the molecule, for example, epoxy (meth) acrylate, urethane (meth) acrylate, polyester (meth) acrylate, polyether (meth) acrylate The system etc. are mentioned. Here, the epoxy (meth) acrylate oligomer can be obtained, for example, by reacting (meth) acrylic acid with an oxirane ring of a relatively low molecular weight bisphenol type epoxy resin or novolak type epoxy resin and esterifying it. . Further, a carboxyl-modified epoxy (meth) acrylate oligomer obtained by partially modifying this epoxy (meth) acrylate oligomer with a dibasic carboxylic acid anhydride can also be used. The urethane (meth) acrylate oligomer can be obtained, for example, by esterifying, with (meth) acrylic acid, a polyurethane oligomer obtained by a reaction between polyether polyol or polyester polyol and polyisocyanate. Examples of polyester (meth) acrylate oligomers include esterification of hydroxyl groups of polyester oligomers having hydroxyl groups at both ends obtained by condensation of polycarboxylic acid and polyhydric alcohol with (meth) acrylic acid, It can be obtained by esterifying the terminal hydroxyl group of an oligomer obtained by adding an alkylene oxide to a carboxylic acid with (meth) acrylic acid. The polyether (meth) acrylate oligomer can be obtained by esterifying the hydroxyl group of the polyether polyol with (meth) acrylic acid.

  Furthermore, other polymerizable oligomers include polybutadiene (meth) acrylate oligomers with high hydrophobicity that have (meth) acrylate groups in the side chain of polybutadiene oligomers, and silicone (meth) acrylate oligomers that have polysiloxane bonds in the main chain. In a molecule such as an aminoplast resin (meth) acrylate oligomer modified with an aminoplast resin having many reactive groups in a small molecule, or a novolac type epoxy resin, bisphenol type epoxy resin, aliphatic vinyl ether, aromatic vinyl ether, etc. There are oligomers having a cationic polymerizable functional group.

Moreover, various additives can be mix | blended with the electron beam curable resin composition in this invention according to the desired physical property of the cured resin layer obtained. Examples of this additive include a weather resistance improver, an abrasion resistance improver, a polymerization inhibitor, a crosslinking agent, an infrared absorber, an antistatic agent, an adhesion improver, a leveling agent, a thixotropic agent, a coupling agent, A plasticizer, an antifoamer, a filler, a solvent, a coloring agent, etc. are mentioned.
Here, as the weather resistance improving agent, an ultraviolet absorber or a light stabilizer can be used. The ultraviolet absorber may be either inorganic or organic, and as the inorganic ultraviolet absorber, titanium dioxide, cerium oxide, zinc oxide or the like having an average particle diameter of about 5 to 120 nm can be preferably used. Moreover, as an organic type ultraviolet absorber, benzotriazole type, for example, 2- (2-hydroxy-5-methylphenyl) benzotriazole, 2- (2-hydroxy-3,5-di-tert-) is specifically mentioned. Amylphenyl) benzotriazole, 3- [3- (benzotriazol-2-yl) -5-tert-butyl-4-hydroxyphenyl] propionic acid ester of polyethylene glycol, and the like. On the other hand, examples of the light stabilizer include hindered amines, specifically 2- (3,5-di-tert-butyl-4-hydroxybenzyl) -2′-n-butylmalonate bis (1,2,2). , 6,6-pentamethyl-4-piperidyl), bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, tetrakis (2,2,6,6-tetramethyl-4-piperidyl)- 1,2,3,4-butanetetracarboxylate and the like. Further, as the ultraviolet absorber or light stabilizer, a reactive ultraviolet absorber or light stabilizer having a polymerizable group such as a (meth) acryloyl group in the molecule can be used.

Examples of the wear resistance improver include, for inorganic substances, spherical particles such as α-alumina, silica, kaolinite, iron oxide, diamond, and silicon carbide. Examples of the particle shape include a sphere, an ellipsoid, a polyhedron, a scale shape, and the like. Although there is no particular limitation, a spherical shape is preferable. Organic materials include synthetic resin beads such as cross-linked acrylic resin and polycarbonate resin. The particle size is usually about 30 to 200% of the film thickness. Among these, spherical α-alumina is particularly preferable because it has high hardness and a large effect on improving wear resistance, and it is relatively easy to obtain spherical particles.
Examples of the polymerization inhibitor include hydroquinone, p-benzoquinone, hydroquinone monomethyl ether, pyrogallol, and t-butylcatechol. Examples of the crosslinking agent include a polyisocyanate compound, an epoxy compound, a metal chelate compound, an aziridine compound, and an oxazoline compound. Used.
As the filler, for example, barium sulfate, talc, clay, calcium carbonate, aluminum hydroxide and the like are used.
Examples of the colorant include known coloring pigments such as quinacridone red, isoindolinone yellow, phthalocyanine blue, phthalocyanine green, titanium oxide, and carbon black.
As the infrared absorber, for example, a dithiol metal complex, a phthalocyanine compound, a diimmonium compound, or the like is used.

In the present invention, the polymerizable monomer and polymerizable oligomer, which are the electron beam curing components, and various additives are homogeneously mixed at predetermined ratios to prepare a coating liquid comprising an electron beam curable resin composition. To do. The viscosity of the coating solution is not particularly limited as long as it is a viscosity capable of forming an uncured resin layer on the surface of the substrate by a coating method described later.
In the present invention, the coating liquid prepared in this way is applied to the surface of the substrate so that the thickness after curing is 1 to 20 μm, gravure coating, bar coating, roll coating, reverse roll coating, Coating is performed by a known method such as comma coating, preferably gravure coating, to form an uncured resin layer. When the thickness after curing is 1 μm or more, a cured resin layer having a desired function is obtained. The thickness of the surface protective layer after curing is preferably about 2 to 20 μm.
Since the coating liquid comprising the electron beam curable resin composition in the present invention can be obtained without using a solvent, it does not generate bubbles when cured with an electron beam and has been conventionally used as a surface protective layer. Oil resistance can be improved as compared with urethane resins and the like.

The uncured resin layer formed as described above is irradiated with an electron beam to cure the uncured resin layer. The acceleration voltage can be appropriately selected according to the resin to be used and the thickness of the layer, but it is preferable to cure the uncured resin layer at an acceleration voltage of about 70 to 300 kV.
In electron beam irradiation, the transmission capability increases as the acceleration voltage increases. Therefore, when using a base material that deteriorates due to the electron beam as the base material, the transmission depth of the electron beam and the thickness of the resin layer are substantially equal. By selecting the accelerating voltage so as to be equal to each other, it is possible to suppress the irradiation of the extra electron beam to the base material, and to minimize the deterioration of the base material due to the excess electron beam.
The irradiation dose is preferably such that the crosslinking density of the resin layer is saturated, and is usually selected in the range of 5 to 300 kGy, preferably 10 to 100 kGy, and further 30 to 70 kGy.

  The electron beam source is not particularly limited, and for example, various electron beam accelerators such as a Cockloft Walton type, a bandegraft type, a resonant transformer type, an insulated core transformer type, a linear type, a dynamitron type, and a high frequency type are used. be able to.

  The cured resin layer thus formed has various functions by adding various additives, for example, a so-called hard coat function, anti-fogging coat function, and anti-fouling coat having high hardness and scratch resistance. A function, an antiglare coating function, an antireflection coating function, an ultraviolet shielding coating function, an infrared shielding coating function, and the like can also be imparted.

The decorative material of the present invention can be used as a decorative plate by sticking to various substrates. The board | substrate used as a to-be-adhered body is not specifically limited, A plastic board, a metal board, woody board | plates, such as a timber, a ceramic material, etc. can be selected suitably according to a use. When these substrates, particularly plastic sheets, are used as substrates, physical or chemical surface treatment such as oxidation or unevenness is applied to one or both sides as desired in order to improve adhesion to the decorative material. Can be applied.
Examples of the oxidation method include corona discharge treatment, chromium oxidation treatment, flame treatment, hot air treatment, ozone / ultraviolet treatment method, and examples of the unevenness method include a sand blast method and a solvent treatment method. These surface treatments are appropriately selected according to the type of the substrate, but in general, the corona discharge treatment method is preferably used from the viewpoints of effects and operability.

  As a plastic sheet, what consists of various synthetic resins is mentioned. Synthetic resins include polyethylene resin, polypropylene resin, polymethylpentene resin, polyvinyl chloride resin, polyvinylidene chloride resin, polyvinyl alcohol resin, vinyl chloride-vinyl acetate copolymer resin, ethylene-vinyl acetate copolymer resin, ethylene-vinyl. Representative examples include alcohol copolymer resin, polyethylene terephthalate resin, polybutylene terephthalate resin, polyethylene naphthalate-isophthalate copolymer resin, polymethyl methacrylate resin, polyethyl methacrylate resin, polybutyl acrylate resin, nylon 6 or nylon 66 And polyamide resin, cellulose triacetate resin, cellophane, polystyrene resin, polycarbonate resin, polyarylate resin, polyimide resin, and the like.

As a metal plate, what consists of aluminum, iron, stainless steel, or copper, for example can be used, and what gave these metals by plating etc. can also be used.
Examples of wood-based boards include veneer of various materials such as cedar, firewood, firewood, pine, lawan, teak, and merapie, wood veneer, wood plywood, particle board, medium density fiber board (MDF), and other wood materials. It is done. These can be used alone or in a laminated manner. The wooden board includes not only a wooden board but also a plastic board containing paper powder and reinforced paper having strength.
Examples of the ceramic material include ceramic building materials such as a gypsum plate, a calcium silicate plate, and a wood piece cement plate, ceramics, glass, firewood, fired tiles, plates made mainly of volcanic ash, and the like.
In addition to these, composites of various materials such as a fiber reinforced plastic (FRP) plate, a paper honeycomb on which both sides of an iron plate are attached, and a polyethylene resin sandwiched between two aluminum plates can be used as the substrate.

Further, the substrate may be subjected to a treatment such as forming a primer layer, or a coating for adjusting the color or a pattern from a design viewpoint may be formed in advance. As a substrate to be an adherend, plate materials such as flat plates and curved plates of various materials, or three-dimensional shaped articles (molded products) in which the above materials are used alone or in combination are targeted.
A backing material such as Japanese paper, Western paper, synthetic paper, non-woven fabric, woven fabric, cold paper, impregnated paper, synthetic resin sheet, or the like may be attached to the decorative material. By sticking the backing material, it acts to reinforce the cosmetic material itself, prevent cracking and tearing of the cosmetic material, prevent bleeding of the adhesive to the cosmetic material surface, and prevent the occurrence of defective products, Handling becomes easy and productivity can be improved.

  Thus, a substrate on which a cosmetic material is placed every leaf or continuously via an adhesive is attached to a cold press, hot press, roll press, laminator, wrapping, edge applicator, vacuum press, etc. The decorative material is bonded to the substrate surface by pressing with an apparatus to obtain a decorative board.

The adhesive is applied using an application device such as a spray, spreader, or bar coater. As the adhesive, vinyl acetate resin-based, urea resin-based, melamine resin-based, phenol resin-based, isocyanate-based adhesives, etc., are used alone or as a mixed adhesive obtained by arbitrarily mixing them. As needed, talc, calcium carbonate, clay, titanium white and other inorganic powders, wheat flour, wood flour, plastic powder, coloring agents, insect repellents, fungicides and the like can be added and mixed in the adhesive. . In general, the adhesive is applied to the substrate surface with a solid content of 35 to 80% by mass and an application amount of 50 to 300 g / m ² .
Adhesion of the decorative material on the substrate is usually performed by forming an adhesive layer on the back surface of the decorative material of the present invention and adhering the substrate or applying the adhesive on the substrate and adhering the decorative material. Etc.

  The decorative board manufactured as described above is also optionally cut by the decorative board, and optionally decorated such as grooving and chamfering on the surface and the mouth using a cutting machine such as a router or a cutter. Can be applied. And various uses, for example, interior or exterior materials of buildings such as walls, ceilings, floors, window frames, doors, handrails, skirting boards, surrounding edges, surface decorative panels for fittings such as malls, kitchens, furniture or light electrical appliances, It can be used for surface decorative boards of cabinets such as OA equipment, interiors and exteriors of vehicles.

EXAMPLES Next, although an Example demonstrates this invention further in detail, this invention is not limited at all by this example.
(Evaluation methods)
(1) Oil resistance The filter paper was sufficiently impregnated with salad oil, and the filter paper was placed on the surface of the decorative material obtained in Examples and Comparative Examples and left at room temperature for 24 hours. Next, the filter paper was removed, and the salad oil remaining on the surface of the decorative material was removed with a neutral detergent. The surface of the decorative material was visually observed in accordance with JIS K6902 (filter paper method). Further, the same observation was made when the salad oil was directly dropped and left at room temperature for 24 hours (direct dropping method). Judgment criteria were evaluated as follows.
◎: No residual contaminants ○: Contaminant residuals are minor but not problematic for practical use ×: Contaminant residuals are significant (2) Contamination resistance In accordance with JIS K-6902, Contaminants were applied to the surface of the cosmetic material, and the residual state of the contaminants after wiping was observed visually. Judgment criteria were evaluated as follows. As the contaminants, commercially available office blue ink, black magic, and red crayon were used.
◎: No contamination remains. ○: Residual contamination is slight, but there is no problem in practical use. ×: Contamination remains remarkably (3) Wear resistance JAS wear C test or JAS wear A test In accordance with the above, CS-17 was used as a wear ring, and the pattern remaining rate on the decorative board surface after rubbing 200 times with a total load of 1000 gf was evaluated.
(4) Marling resistance A steel wool (# 0000) is attached to a weight adjusted to a load of 29.4 kPa (300 g / cm ² ), and the surface of the decorative material is rubbed 10 times. The change of was observed visually. Judgment criteria were evaluated as follows.
◎: No change at all ○: Change is slight but minor and has no practical problem ×: Change is remarkable

Example 1
As the base material 2, an oil-resistant paper having a basis weight of 30 g / m ² and an oil resistance of 7 to 8 is used, and a urethane ink having an acrylic resin as a binder on one side thereof is used, and the entire surface has a coating amount of 18 g / m ² . A solid layer was applied by gravure printing to form a colored layer 3. A primer layer 5 was formed thereon using acrylic ink.
Next, 60 parts by mass of ethylene oxide-modified trimethylolpropane ethylene oxide triacrylate, which is a trifunctional acrylate monomer, and 40 parts by mass of dipentaerythritol hexaacrylate, which is a hexafunctional acrylate monomer, on the primer layer 5 and an average particle diameter of 5 μm. An electron beam curable resin composition comprising 2 parts by mass of silica particles and 1 part by mass of a silicone acrylate prepolymer was applied at a coating amount of 5 g / m ² by a gravure offset coater method. After the coating, an electron beam with an acceleration voltage of 175 kV and an irradiation dose of 30 kGy (3 Mrad) was irradiated to cure the electron beam curable resin composition, whereby the surface protective layer 6 was obtained. Next, curing was performed at 70 ° C. for 24 hours to obtain a cosmetic material. Table 1 shows the results of the above evaluation for this decorative material.

Comparative Example 1
A decorative material was obtained in the same manner as in Example 1 except that a reinforcing paper between building papers having a basis weight of 30 g / m ² was used as the base material 2. Table 1 shows the results of the above evaluation for this decorative material.

Reference example 1
The back surface of the decorative material produced in Example 1 and a particle board having a thickness of 9 mm as a substrate were applied to a wood plywood with urea synthetic resin adhesive “Oshika Resin” manufactured by Oshika Co., Ltd. 60 g / m ² (wet) By adhering via an adhesive layer formed by coating under the above conditions, a wood decorative board was produced.

  According to the present invention, it is possible to obtain a cosmetic material that is comprehensively excellent in surface properties such as oil resistance, stain resistance, abrasion resistance, and marling resistance, and is applied to the outer surface of a kitchen or a cupboard. It is suitably used for applications such as building interior materials such as walls, joinery such as doors, and surface materials such as furniture.

It is a schematic diagram which shows the cross section of the decorative material of this invention.

Explanation of symbols

1. Cosmetic material2. Base material 3. 3. Colored layer Pattern layer 5. Primer layer 6. Surface protective layer

Claims (4)

  A decorative material having a pattern layer and / or a colored layer and a surface protective layer on a base material, the base material being a JAPAN TAPPI paper pulp test method no. 41: A cosmetic material which is an oil-resistant paper treated with a fluorine-based sizing agent having a value measured by the 2000 method of 4 or more, and whose surface protective layer is obtained by crosslinking and curing an electron beam curable resin composition.   The cosmetic material according to claim 1, wherein the ink used in the pattern layer and / or the colored layer contains titania having an oil absorption of 20 g / 100 g or less as measured by JIS K5101 (linseed oil).   The cosmetic material according to claim 1 or 2, further comprising a primer layer containing an acrylic resin between the pattern layer and / or the colored layer and the surface protective layer. The decorative board which stuck the decorative material in any one of Claims 1-3 to the board | substrate.

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