JP2003206617A - Decorative materials - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decorative material with elaborate design, highly resistant to damage by a caster, and superior in water resistance, which can eliminate the color coating work to grooves. <P>SOLUTION: In the decorative material with a decorative sheet 3 being bonded in which the decorative sheet 3 has a wooden base material 2 equipped on the surface with a pattern layer and a plurality of straight lines of longitudinal joint print layer 31 evenly spaced apart on upper side of the pattern layer, the decorative material 1 is characterized in that the longitudinal joint print layer 31 is designed to face the recessed grooves 11. In addition, in the decorative material with decorative sheet 3 being bonded in which the decorative sheet 3 has the wooden base material 2 equipped on the surface with a print layer and a plurality of strait lines of longitudinal joint print layer 31 evenly spaced apart on upper side of the print layer, a horizontal joint print layer 31 is arranged in the perpendicular direction to the longitudinal joint print layer 31, and the horizontal joint print layer 31, the decorative material 1 is characterized in that the longitudinal joint print layer 31 and the horizontal joint print layer are designed to face the recessed grooves 11. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative material used for interiors such as floors, walls, and ceilings of houses and the like, and more specifically, a groove portion used especially for floors of houses and stairs. The present invention relates to a decorative material having a chamfered portion.

[0002]

2. Description of the Related Art Conventionally, for example, a decorative sheet printed with a picture pattern in which small veneer boards are assembled in a parquet shape is attached to the surface of a 1 × 6 rectangular flat wooden base material, In order to improve the design and to give a high-class feeling, the transverse cross-sectional shape in which the bottom is located on the wood-based base material along the joining boundary line between the small veneer boards with the picture pattern is V-shaped or U-shaped. In addition to forming the groove by cutting, a decorative board coated with transparent paint or colored paint inside the groove is attached to the floor surface in order to give the groove a sense of depth or to improve the water resistance of the groove. It is often used as a floor material.

However, the decorative plate described above is excellent in design since it is coated with a transparent paint or a colored paint in the groove, but the groove is exposed to the end face of the decorative sheet and is formed on the wood-based substrate. Since the bottom is located, the caster resistance is inferior and the water resistance is not satisfactory, and a decorative material that improves these has been demanded.

In order to meet the above-mentioned demand, for example, a wood-based base material having a groove formed on the surface in advance by cutting so as to correspond to the joint boundary line between the small projecting plates of the decorative pattern of the decorative sheet is used. The decorative material is made by lapping the decorative sheet according to the surface shape, or the decorative sheet is pasted on the surface of the wood-based substrate, and then the joint border between the small veneers with the decorative pattern of the decorative sheet. A decorative material in which a groove is formed by processing by an embossing method using an embossing plate in which a convex portion is formed so as to correspond to a line has been devised and marketed.

Both the above-mentioned lapping-processed decorative material and embossed decorative material are excellent in caster resistance and water resistance because the grooves are covered with a decorative sheet. The groove is flat and does not change much and it is not satisfactory in terms of design. Like a decorative material with a groove formed by conventional cutting processing, coloring paint is applied to the groove to give a depth feeling to the groove. It was necessary to improve the quality and give a high-class feeling. However, the work of applying the colored paint to the groove is quite complicated, and this solution has been demanded.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to meet the above-mentioned demands, and it is possible to eliminate the work of applying a colored coating material to the groove, which is excellent in design and caster resistant. It is to provide a decorative material having excellent properties and water resistance.

[0007]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides the invention according to claim 1 in which a pattern layer is provided on the surface of the wood-based substrate and a plurality of patterns are provided on the surface side of the pattern layer. In a decorative material to which a decorative sheet in which vertical joint printing layers made of straight lines are provided at equal intervals is attached, a portion corresponding to the vertical joint printing layers is a recessed groove portion. With this configuration, it is possible to eliminate the work of applying the colored paint to the groove, and it is possible to obtain a decorative material having excellent designability, caster resistance, and water resistance.

According to a second aspect of the present invention, a pattern layer is formed on the surface of the wood base material, and vertical joint printing layers consisting of a plurality of straight lines are provided at equal intervals on the surface side of the pattern layer. A decorative material having a decorative sheet provided in a direction orthogonal to the layer and having a decorative sheet provided so that the adjacent lateral printing layers are staggered with the vertical printing layer interposed therebetween, wherein the vertical printing is performed. The layer and the portion corresponding to the horizontal joint printing layer are recessed groove portions. By configuring in this way, while being excellent in caster resistance and water resistance, it is possible to attach an accent in units defined by the vertical joint printing layer and the horizontal joint printing layer, and a decorative material with more excellent design. can do.

According to a third aspect of the present invention, in the decorative material according to any one of the first and second aspects, the vertical joint printing layer has a dark color from the center to both ends of each cross section. It is characterized in that it is configured to continuously change to a light color. With such a configuration, it is possible to obtain a decorative material that does not deteriorate the design even if the positional relationship between the vertical joint printing layer and the recessed groove portion is slightly deviated, and the productivity is improved.

The present invention according to claim 4 provides the invention according to claim 1.
The decorative material according to any one of claims 1 to 3, wherein the portion corresponding to the vertical joint printing layer located at the end portion of the decorative material is a chamfered concave portion. With this configuration, the joint portion between the decorative materials can also be the recessed groove portion, so that the decorative material can be made more excellent in design.

The present invention according to claim 5 provides the invention according to claim 1.
The cosmetic material according to any one of items 1 to 4 is characterized in that a surface protective layer formed of an ionizing radiation curable resin is provided on the outermost surface. With this structure, it is possible to obtain a decorative material having excellent physical properties such as abrasion resistance, impact resistance, stain resistance, and scratch resistance.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention described above will be described in detail below with reference to the drawings. 1 is a perspective view showing an embodiment of a decorative material according to the present invention, FIG. 2 is a partially enlarged plan view showing an embodiment of a vertical joint printing layer provided on a decorative sheet of the decorative material of the present invention, and FIG. 3 is a book. FIG. 4 is a partially enlarged plan view showing an example of a joint printing layer provided on a decorative sheet of a decorative material of the present invention, and FIG. 4 is an example of a groove forming method for forming a concave groove portion and a chamfered concave portion provided on a decorative material according to the present invention. 5A is a schematic side view of a press, FIG. 5B is a sectional view taken along the line XY of FIG. 5A, and FIG. 5 is a groove forming method for forming a concave groove and a chamfered concave portion provided in a decorative material according to the present invention. (C) is a schematic side view of a press machine, (d) is a perspective view of a press plate used in (c), in which 1 is a decorative material, 2 is a wood-based substrate, Three
3'and 3 "are decorative sheets, 11 is a concave groove portion, 12 is a chamfered concave portion, 30 is a wood grain print layer, 31 and 32 are vertical joint print layers, and 33 is a horizontal joint print layer.

FIG. 1 is a perspective view showing an embodiment of a decorative material according to the present invention. The decorative material 1 has a wood grain print layer 30 on the surface of a wood base material 2 and a surface from the wood grain print layer 30. 4 to the side
Vertical vertical joint printing layer 31 of the book (3 are shown in FIG. 1)
The decorative sheet 3 is attached at equal intervals, and the portion corresponding to the vertical joint printing layer 31 comprises two recessed groove portions 11 and two chamfered recessed portions 12. In the decorative material 1 configured in this manner, the vertical joints in which the concave groove portion (row groove) 11 and the chamfered concave portion 12 (which become the concave groove portion 11 when the decorative materials 1 are joined) are provided in advance on the decorative sheet 3. Since the printed layer 31 is colored, it is possible to form the recessed groove portion 11 having a sense of depth and excellent in designability, and it is possible to eliminate the troublesome work of applying the colored coating material to the groove and caster resistance. Also, it can be a decorative material having excellent water resistance.

As the wood-based base material 2 constituting the decorative material 1, one or more kinds of medium density fiberboard, high density fiberboard, plywood, particle board and the like can be used. When the decorative material 1 is used as a flooring material, a fruit is usually provided on one side of the wooden base material 2 and a male fruit that can be fitted with the fruit is provided on the other side. It is what is done.

Next, the decorative sheet 3 constituting the decorative material 1 will be described. The base material sheet used for the decorative sheet 3 is not particularly limited as long as it can form at least a pattern print layer such as the wood grain pattern print layer 30 and a joint print layer such as the vertical joint print layer 31. Examples include thin paper, high-quality paper, kraft paper, Japanese paper, titanium paper, resin-impregnated paper, paper reinforced paper, wood fiber, glass fiber, asbestos, polyester fiber, vinylon fiber, rayon fiber, etc. It is possible to use a woven or non-woven fabric made of the above fibers, or one or more laminates of synthetic resin sheets such as polyolefin, polyester, polyacryl, polyamide, polyurethane, polystyrene and ABS. Further, the above-mentioned substrate sheet may be colored by adding a pigment or the like, if necessary, or may be subjected to an appropriate easy adhesion treatment such as corona discharge treatment, plasma treatment or ozone treatment on a necessary surface. It is a thing. Further, the synthetic resin sheet may be a sheet in an unstretched state or in a state of being stretched uniaxially or biaxially, and if necessary, known antioxidants, light stabilizers, ultraviolet rays, etc. Various additives such as an inhibitor or an inorganic filler for imparting flame retardancy can be appropriately added.

The pattern print layer and the joint print layer are generally formed by an ink by a known printing method such as gravure printing, offset printing, silk screen printing, and printing is performed as the ink. A vehicle may be appropriately selected and used according to the material of the base sheet to be used. Examples of the vehicle include chlorinated polyethylene, chlorinated polyolefin such as chlorinated polypropylene, polyester, polyurethane composed of isocyanate and polyol, Polyacryl, polyvinyl acetate, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, cellulosic resin, polyamide resin, etc. may be used alone or in admixture of two or more, and pigments, solvents, various auxiliary agents, etc. It is possible to use an ink-added product, but consider the recent environmental problems. And a non-chlorine vehicle in which one or more kinds of polyester, polyurethane composed of isocyanate and polyol, polyacryl, polyvinyl acetate, cellulose resin, polyamide resin, etc. are mixed, particularly polyester, polyurethane composed of isocyanate and polyol , Polyacrylic, polyamide resin, etc. 1
It is preferable to use one kind or a mixture of two or more kinds.

As the design of the design printing layer, a wood grain design,
It is a print pattern such as a stone pattern, a cloth pattern, a leather pattern, a geometrical figure, a character, a symbol, or a solid pattern. In addition, the width of the joint printing layer such as the vertical joint printing layer 31 is determined in consideration of the type and the groove width of the pattern printing layer when the decorative material 1 is used, and the designability of the recessed groove portion 11 or the processing accuracy thereof. The pattern is made of a striped solid pattern as shown in FIG. 1, or a dark color from the center to both ends of each cross section as shown in FIG. 2 ( Figure 2
(Displayed with a symbol D) to light color (displayed with a symbol L in FIG. 2)
The vertical joint printing layer 32 is composed of a strip-shaped gradation pattern that changes continuously. In particular, the vertical joint printing layer 3 consisting of a band-shaped gradation pattern
2 means that the vertical joint printing layer can be provided wider than the width of the recessed groove portion 11 (see FIG. 1), and is longer than the vertical joint printing layer 31 (see FIG. 1) having a striped solid pattern. Even if the positional relationship between the groove 32 and the recessed groove portion 11 (see FIG. 1) in the width direction is slightly deviated, the designability is not deteriorated, and the productivity of the decorative material 1 is improved, which is preferable. It should be noted that the vertical joint printing layers 31 and 32 are illustrated as four in FIGS. 1 and 2 and are not limited to this, and should be appropriately determined in consideration of designability. Further, although the joint printing layer has been described as the vertical joint printing layers 31 and 32, the decorative material of the present invention is not limited to this. For example, as shown in FIG. The horizontal joint printing layers 33 are staggered in the direction perpendicular to the vertical joint printing layers 31, that is, the horizontal joint printing layers 33 adjacent to each other with the vertical joint printing layers 31 interposed therebetween are not aligned. It is possible, and by having such a configuration, it is possible to obtain a decorative material having more excellent designability. In FIG. 3, the horizontal joint printing layer 33 is shown as a strip-shaped solid pattern, but the horizontal joint printing layer is similar to the vertical joint printing layer and may be a strip-shaped solid pattern. This preferable strip-shaped gradation pattern may be used.

The decorative sheet 3 may be provided with an uneven pattern by embossing or the like, if necessary.
By providing the uneven pattern, it is possible to further improve the design. Examples of the concavo-convex pattern include a conduit groove provided in a conduit part such as a wood grain pattern, an uneven surface of a stone plate, a cloth surface texture, a satin finish, a grain, a hairline, and a line groove.

The decorative sheet 3 has physical properties required for the purpose of use as the decorative material 1, for example, wall materials, floor materials, ceiling materials, etc., especially scratch resistance, abrasion resistance, and stain resistance. Although there are differences in surface physical properties such as, the surface protective layer is usually provided on the outermost surface of the decorative sheet 3. Examples of the resin forming the surface protective layer include epoxy resin, acrylic resin, urethane resin, amide resin, ester resin, and polyolefin such as polyethylene, polypropylene, polybutene, polybutadiene, polyisoprene. Or a copolymer of two or more kinds of olefins such as ethylene, propylene, butene, butadiene and isoprene, or a copolymer of α-olefins having 4 or more carbon atoms (linear low density polyethylene), ethylene-vinyl acetate copolymer Examples thereof include polymers, ethylene-vinyl alcohol copolymers, and mixed resins composed of one or more of these. Then, as a method of forming this surface protective layer, for example, a solution of the above-mentioned resin or a method of melting by heating, a known coating means such as a gravure printing method, a roll coating method, or an extrusion coating method is appropriately used. It can be formed by applying it, or can be formed by forming the above resin into a film and laminating it by a known laminating method such as a dry lamination method.

Further, particularly when the decorative material 1 is used as a floor material, it is preferable that the surface protective layer is formed of an ionizing radiation curable resin. This is because the surface hardness is high and the productivity is excellent. The ionizing radiation curable resin is a resin that undergoes a cross-linking polymerization reaction upon irradiation with ionizing radiation to change into a three-dimensional polymer structure. Ionizing radiation means an electromagnetic wave or charged particle beam having an energy quantum capable of polymerizing and cross-linking molecules, and visible light, ultraviolet light (near ultraviolet light, vacuum ultraviolet light, etc.),
There are X-rays, electron beams, ion beams and the like. Normally, ultraviolet rays or electron beams are used, and as the ultraviolet rays, 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 halide lamp lamp can be used. As the wavelength of ultraviolet rays, a wavelength range of 1900 to 3800Å is usually mainly used. Also, as electron beams, Cockloft-Walton type, Bandecraft type, resonant transformer type,
Insulation core transformer type, linear type, dynamitron type, high frequency type electron beam accelerators, etc.
Those which irradiate with electrons having an energy of 000 keV, preferably 100 to 300 keV can be used.

The ionizing radiation-curable resin is a monomer having a radically polymerizable unsaturated group such as a (meth) acryloyl group or a (meth) acryloyloxy group, or a cationically polymerizable functional group such as an epoxy group in the molecule. It is composed of a body, a prepolymer or a polymer (hereinafter collectively referred to as a 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 to mean acrylate or methacrylate.

Examples of the prepolymer having a radically polymerizable unsaturated group include polyester (meth) acrylate, urethane (meth) acrylate, epoxy (meth) acrylate, melamine (meth) acrylate, triazine (meth) acrylate and polyvinylpyrrolidone. Can be mentioned. This prepolymer usually has a molecular weight of 1000.
Those of about 0 or less are used. When the molecular weight exceeds 10,000, 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, the acrylate is faster in terms of the cross-linking curing speed with ionizing radiation, and therefore the acrylate is more advantageous for the purpose of curing efficiently at a high speed in a short time.

As the prepolymer having a cationically polymerizable functional group, an epoxy resin such as a bisphenol type epoxy resin, a novolac type epoxy resin, an alicyclic type epoxy resin, an aliphatic vinyl ether, an aromatic vinyl ether or a urethane type resin is used. Examples thereof include vinyl ether resins such as vinyl ether and ester vinyl ether, and prepolymers such as cyclic ether compounds and spiro compounds.

The ionizing radiation curable resin is sufficiently cured by irradiation with an electron beam, but when it is cured by irradiation with ultraviolet rays, a photopolymerization initiator can be added as a sensitizer. As the photopolymerization initiator in the case of a resin system having a radically polymerizable unsaturated group, acetophenones, benzophenones, thioxanthones, benzoin, benzoin methyl ether, Michler benzoyl benzoate, Michler's ketone, diphenyl sulfide, dibenzyl disulfide, Diethyl oxide, triphenylbiimidazole, isopropyl-N, N-dimethylaminobenzoate and the like can be used alone or in combination. In the case of a resin system having a cationically polymerizable functional group, an aromatic diazonium salt, an aromatic sulfonium salt, a metallocene compound, a benzoin sulfonic acid ester, a fryloxysulfoxonium diallyl iodosyl salt or the like is used alone or as a mixture. be able to. In addition, the addition amount of these photopolymerization initiators is generally 1
It is about 0.1 to 10 parts by weight with respect to 00 parts by weight.
As a method of forming the surface protective layer with the ionizing radiation curable resin, for example, it is formed by forming a solution of the ionizing radiation curable resin and applying it by a well-known coating method such as a gravure coating method or a roll coating method. You can The coating amount is generally 5 to 30 g / m ² as a solid content, and more preferably 15 to 25 g / m ² .

Further, in order to impart further scratch resistance and abrasion resistance to the surface protective layer formed of an ionizing radiation curable resin, powdery aluminum oxide, silicon carbide, silicon dioxide, titanic acid are used. This can be achieved by adding abrasives such as calcium, barium titanate, magnesium pyroborate, zinc oxide, silicon nitride, zirconium oxide, chromium oxide, iron oxide, boron nitride, diamond, hard sand, and glass fiber. The ratio of this abrasive to 100 parts by weight of the ionizing radiation curable resin is appropriately 1 to 80 parts by weight.

The decorative material 1 of the present invention can be easily manufactured by the lapping method and the embossing method described in the prior art. Moreover, although it has been described so far that the surface protective layer is provided on the outermost surface of the decorative sheet 3,
The method of forming the surface protective layer is not limited to this, and the decorative material 1 is first prepared by a lapping method or an embossing method, and then a well-known coating method such as a roll coating method is applied to the surface of the decorative material 1. It may be formed by coating.

The adhesive for adhering the decorative sheet 3 to the wood-based base material 2 must be appropriately selected depending on the material of the surface of the decorative sheet 3 that contacts the adhesive. Generally, vinyl acetate resin, Well-known urea-based resins, urethane-based resins and the like may be selected from the adhesives and used.

Next, the present invention will be described in more detail with reference to the following examples. Example 1 [Preparation of decorative sheet] 60 subjected to double-sided corona discharge treatment
A solution of an acrylic-urethane resin (a resin obtained by adding 5 parts by weight of hexamethylene diisocyanate to 100 parts by weight of acrylic polyol) solution on one surface of an olefin resin sheet having a thickness of μm and having a solid content of 2 g / m ² by a gravure coating method. To form a printing primer layer, and a printing ink comprising an acrylic-urethane resin (a resin obtained by adding 5 parts by weight of hexamethylene diisocyanate to 100 parts by weight of acrylic polyol) on the printing primer layer. The solid pattern printing layer and the pattern printing layer are sequentially printed by the gravure printing method to form a wood grain pattern printing layer, and a dark pattern is formed on the wood grain pattern printing layer from the center to both ends of each cross section. With a striped gradation pattern that changes continuously from color to light color,
In addition, vertical joint printing layers were formed at intervals matching the positions of the recessed groove portions and the chamfered recessed portions previously formed in the wood-based substrate during the lapping process described in the subsequent step. Next, a urethane adhesive is applied on the printed layer so that the solid content is 10 g / m ² to form an adhesive layer, and the propylene resin is applied on the adhesive layer to a thickness of 80 μm. A transparent resin layer was formed by heat-melt extrusion with a T-die extruder. Thereafter, the transparent resin layer surface is subjected to corona discharge treatment, and an acrylic-urethane resin (resin in which 5 parts by weight of hexamethylene diisocyanate is added to 100 parts by weight of acrylic polyol) solution is applied to the corona discharge treatment by gravure coating to obtain a solid content. 1
g / m ² and so as applied to form a surface protective layer for a primer layer, and the solid content in the roll coating method urethane acrylate ionizing radiation-curable resin to the surface protective layer for a primer layer is 15 g / m ² is applied and dried to form an uncured ionizing radiation-curable resin layer, and the uncured ionizing radiation-curable resin layer is irradiated with an electron beam (accelerating voltage of 125 keV, 5 Mra under an environment of oxygen concentration of 200 ppm or less.
d) is irradiated and cured to form a surface protective layer made of an ionizing radiation curable resin, and embossing is performed from the surface protective layer side with a wood grain conduit pattern embossing plate having a plate depth of 50 μm to obtain a wood grain conduit pattern. A decorative sheet having an uneven pattern was produced.

[Production of Wood-Based Base Material] A 12 mm-thick plywood plate is cut into a predetermined size, and then a V-groove machine is used to form a cross-section V on one surface thereof.
A wood-based base material was produced in which male and female seeds and chamfered dents were formed on the sides of the plywood using an actual processing machine while forming a grooved groove.

[Production of Decorative Material] A urethane adhesive is applied to the surface of the olefin resin sheet of the above-mentioned decorative sheet in a wet state at 120 g / m ² to provide a recessed groove portion of the wood-based substrate produced above. A lapping machine was used to perform lapping on the exposed surface to obtain a decorative material of the present invention. At that time, the vertical joint printing layer formed on the decorative sheet was aligned and lapped so as to match with the recessed groove portion and the chamfered recessed portion. The obtained decorative material was a decorative material having a grooved portion and a chamfered concave portion, in which a vertical joint printing layer was formed, and a groove portion having a sense of depth and excellent in design.

Example 2 [Preparation of cosmetic material] An adhesive (Ricabond BA-10A / BA- manufactured by Chuo Rika Kogyo Co., Ltd.) was applied to one surface of a plywood plate having a thickness of 12 mm.
10B = 100/5) was applied in a wet state at 6 g / scale ² , the decorative sheet prepared in Example 1 was laminated so that the surface protective layer side was exposed, and a cold press machine (press pressure:
2 kg / cm ² , pressing time: 1 hour) to produce an intermediate decorative material, after which the intermediate decorative material is cut into a desired shape and dimension, as shown in FIGS. 4 (a) and 4 (b). Using a press machine composed of an upper press roll having a V-shaped convex portion in the circumferential direction and a cylindrical lower press roll,
A decorative material of the present invention was obtained in which a concave groove portion and a chamfered concave portion were formed by passing an intermediate decorative material cut into a desired shape at a processing speed of 40 m / min between upper and lower press rolls. At that time, the vertical joint printing layer formed on the decorative sheet was aligned so that the vertical joint printing layer was aligned with the V-shaped convex portion provided on the upper press roll, and groove formation processing was performed. The obtained decorative material was a decorative material having a grooved portion and a chamfered concave portion, in which a vertical joint printing layer was formed, and a groove portion having a sense of depth and excellent in design.

Example 3 [Preparation of decorative sheet] 60 subjected to double-sided corona discharge treatment
A solution of an acrylic-urethane resin (a resin obtained by adding 5 parts by weight of hexamethylene diisocyanate to 100 parts by weight of acrylic polyol) solution on one surface of an olefin resin sheet having a thickness of μm and having a solid content of 2 g / m ² by a gravure coating method. To form a printing primer layer, and a printing ink comprising an acrylic-urethane resin (a resin obtained by adding 5 parts by weight of hexamethylene diisocyanate to 100 parts by weight of acrylic polyol) on the printing primer layer. The solid pattern printing layer and the pattern printing layer are sequentially printed by the gravure printing method to form a wood grain pattern printing layer, and a dark pattern is formed on the wood grain pattern printing layer from the center to both ends of each cross section. With a striped gradation pattern that changes continuously from color to light color,
In addition, a vertical joint printing layer and a lateral joint printing layer were formed at intervals matching the positions of the vertical and horizontal V-shaped convex portions provided on the press plate used in the press working described in the subsequent step. Next, a urethane adhesive is applied on the printed layer so that the solid content is 10 g / m ² to form an adhesive layer, and the propylene resin is applied on the adhesive layer to a thickness of 80 μm. A transparent resin layer was formed by heat-melt extrusion with a T-die extruder. Thereafter, the transparent resin layer surface is subjected to corona discharge treatment, and an acrylic-urethane resin (resin in which 5 parts by weight of hexamethylene diisocyanate is added to 100 parts by weight of acrylic polyol) solution is applied to the corona discharge treatment by gravure coating to obtain a solid content. 1
g / m ² and so as applied to form a surface protective layer for a primer layer, and the solid content in the roll coating method urethane acrylate ionizing radiation-curable resin to the surface protective layer for a primer layer is 15 g / m ² is applied and dried to form an uncured ionizing radiation-curable resin layer, and the uncured ionizing radiation-curable resin layer is irradiated with an electron beam (accelerating voltage of 125 keV, 5 Mra under an environment of oxygen concentration of 200 ppm or less.
d) is irradiated and cured to form a surface protective layer made of an ionizing radiation curable resin, and embossing is performed from the surface protective layer side with a wood grain conduit pattern embossing plate having a plate depth of 50 μm to obtain a wood grain conduit pattern. A decorative sheet having an uneven pattern was produced.

[Preparation of Decorative Material] An adhesive (Ricabond BA-1 manufactured by Chuo Rika Kogyo Co., Ltd.) was attached to one surface of a plywood plate having a thickness of 12 mm.
0A / BA-10B = 100/5) in wet condition 6
g / measure ^{2 is} applied, and the decorative sheet produced above is laminated so that the surface protective layer side is exposed and pressed with a cold press machine (pressing pressure: 2 kg / cm ² , pressing time: 1 hour). To produce an intermediate decorative material by cutting the intermediate decorative material into a desired shape and dimensions, and using a press plate having vertical and horizontal V-shaped convex portions as shown in FIG. After placing the V-shaped convex portion of the plate so as to come into contact with the surface protective layer of the intermediate decorative material cut into a desired shape and dimension, FIG.
A decorative material of the present invention having vertical and horizontal concave groove portions and chamfered concave portions formed was obtained by pressing with a pressing machine as shown in (c). At that time, the vertical joint printing layer and the lateral joint printing layer formed on the decorative sheet were aligned so that the vertical joint printing layer and the horizontal joint printing layer were aligned with the vertical V-shaped convex portions provided on the press plate, and the groove formation processing was performed.
The obtained decorative material was a decorative material having a grooved portion and a chamfered concave portion, in which vertical and horizontal joint printing layers were formed, and a groove portion having a sense of depth and excellent in design.

[0034]

As described above, the present invention can provide a decorative material having a groove portion with a sense of depth and excellent in designability, and also a decorative material excellent in caster resistance and water resistance. be able to. Further, it is possible to eliminate the complicated work of applying the colored paint to the groove.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a decorative material according to the present invention.

FIG. 2 is a partially enlarged plan view showing an embodiment of a vertical joint printing layer provided on the decorative sheet of the decorative material of the present invention.

FIG. 3 is a partially enlarged plan view showing an example of a joint printing layer provided on the decorative sheet of the decorative material of the present invention.

4A and 4B show an embodiment of a groove forming method for forming a concave groove portion and a chamfered concave portion provided in a decorative material according to the present invention, where FIG. 4A is a schematic side view of a press machine, and FIG. −
It is a Y sectional view.

FIG. 5 shows another embodiment of a groove forming method for forming a concave groove and a chamfered concave portion provided in a decorative material according to the present invention, (c) is a schematic side view of a press machine, (d) is (c). It is a perspective view of the press plate used.

[Explanation of symbols]

1 Cosmetic materials 2 Wood-based materials 3,3 ', 3 "decorative sheet 11 Recessed groove 12 Chamfered dent 30 wood grain print layer 31, 32 Vertical joint printing layer 33 Horizontal joint printing layer

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B41M 7/00 B41M 7/00 F term (reference) 2E110 AA57 AB03 AB04 AB05 BA02 BB03 BB34 GA32W GA33X GB42W GB62W GB62X GB63W 2H113 AA04 AA06 BA22 BA28 BB22 BB32 BB33 CA07 DA41 DA43 FA04 FA10 FA42 4F100 AK01D AK03 AK07 AK25 AK51 AL01 AP00A AP02 BA03 BA04 BA07 DD05C EJ53D GB08 HB00B HB01 HB31C JB14D

Claims (5)

[Claims] 1. A decorative material in which a decorative layer having a pattern layer and a vertical joint printing layer consisting of a plurality of straight lines on the surface side of the wood-based substrate is provided at equal intervals, wherein the vertical joint is provided. A decorative material characterized in that a portion corresponding to the printed layer is a recessed groove portion. 2. A pattern layer on the surface of a wood-based substrate, and vertical joint printing layers consisting of a plurality of straight lines provided on the surface side of the pattern layer at equal intervals, and horizontal joint printing in a direction orthogonal to the vertical joint printing layer. In a decorative material to which a decorative sheet is provided, in which layers are provided and the horizontal joint printing layers adjacent to each other via the vertical joint printing layers are attached, the vertical joint printing layer and the horizontal joint printing layer are provided. A decorative material having a recessed groove portion. 3. The vertical joint printing layer is configured so as to continuously change from a dark color to a light color from a central portion to both end portions of each transverse cross section thereof. The cosmetic material according to any of the above. 4. The decorative material according to claim 1, wherein a portion corresponding to the vertical joint printing layer located at an end portion of the decorative material is a chamfered concave portion. 5. The decorative material according to claim 1, wherein a surface protective layer formed of an ionizing radiation curable resin is provided on the outermost surface.