JP7264173B2 - Woodgrain decorative material - Google Patents

Description

TECHNICAL FIELD The present invention relates to a decorative material, and more particularly to a woodgrain decorative material.

BACKGROUND ART Decorative materials are used to impart design properties to the surfaces of building materials, furniture, and the like. With wood-grain decorative materials, by emphasizing the uneven shape of the surface and shaping the uneven shape in sync with the pattern, it is possible to achieve a high degree of design by obtaining a visual effect and tactile sensation that is close to that of real wood. Ingenuity has been made (see, for example, Patent Document 1).
The wood grain decorative material proposed in Patent Document 1 forms a wood grain pattern from a combination of a positive printed layer and a negative printed layer that complementarily cover a flat surface, and the wood grain pattern is formed by the positive printed layer. The concave portions of the wood grain pattern are formed, and the convex portions of the wood grain pattern are formed by a thick negative print layer to express the three-dimensional effect of the wood grain pattern.

Japanese Patent Publication No. 53-331

In recent years, with the increasing demand for high-end products and the diversified needs of consumers, there is a demand for designs that are closer to real wood, and there is a need to meet stricter requirements.
However, the wood grain decorative material proposed in Patent Document 1 has insufficient fidelity in reproducing visual effects and tactile sensations, and it is difficult to say that it has a design close to that of real wood.

In view of the above problems, an object of the present invention is to provide a wood grain decorative material having a design close to that of real wood in terms of visual effects and tactile sensations.

In order to solve the above problems, the present inventors conducted extensive research and found that the positions of the resin pattern layer, the wood texture layer, and the vessel pattern layer provided on one side of the base material and the ratio of the area occupied by them are specified. The inventors have found that the above problems can be solved by: That is, the present invention provides the following [1] to [7].
[1] A base material, a resin pattern layer provided on a part of one surface side of the base material, and a wood texture layer and a vessel pattern layer provided on the remaining part of the one surface side of the base material A wood grain decorative material, wherein the ratio of the area occupied by the wood texture pattern layer to the ratio of the area occupied by the wood texture pattern layer and the vessel pattern layer is 1% or more and 99% or less.
[2] The wood grain decorative material of [1], wherein the wood texture pattern layer is present between the resin pattern layer and the vessel pattern layer in plan view.
[3] The woodgrain decorative material of [1] or [2], which comprises a matte layer on the vessel pattern layer.
[4] The wood grain decorative material according to any one of [1] to [3], wherein the vessel pattern layer has a narrowed and rounded end shape.
[5] The wood grain decorative material according to any one of [1] to [4], wherein the resin pattern layer contains particles.
[6] The woodgrain decorative material according to [5], wherein the particles have an average particle size of 10 μm or more and 40 μm or less.
[7] The wood grain of any one of [1] to [6], wherein the surface of the resin pattern layer has the highest specular gloss at 60 degrees according to JIS Z8741:1997 on one side of the substrate. Toning material.

According to the present invention, it is possible to provide a wood grain decorative material having a design close to that of real wood in terms of visual effects and tactile sensations.

1 is a schematic perspective view of a woodgrain decorative material according to an embodiment of the present invention; FIG. 1 is a schematic cross-sectional view (part 1) of a woodgrain decorative material according to an embodiment of the present invention; FIG. FIG. 4 is a schematic diagram showing the end shape of the vessel pattern layer of the woodgrain decorative material according to the embodiment of the present invention. FIG. 2 is a schematic cross-sectional view (part 2) of the woodgrain decorative material according to the embodiment of the present invention;

Embodiments of the present invention will be described below with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, the drawings are schematic, and the relationship between the thickness and the planar dimension, the ratio of the thickness of each layer, and the like are different from the actual ones. Therefore, specific thicknesses and dimensions should be determined by referring to the following description. In addition, it goes without saying that there are portions with different dimensional relationships and ratios between the drawings.

(Embodiment)
As shown in FIG. 1, the woodgrain decorative material according to the embodiment of the present invention includes a substrate 1 and a resin pattern layer 4 provided so as to partially cover one surface 1F side of the substrate 1. and a wood texture layer 2 and a vessel pattern layer 3 which are provided so as to cover the rest of the base material 1 on the side of one surface 1F.
The wooden texture layer 2, the vessel pattern layer 3, and the resin pattern layer 4 preferably have curved edges in order to have a design close to real wood.
There are no particular restrictions on the wood for which the design is intended to be reproduced by the wood grain decorative material, but cedar, cypress, walnut, pine, cherry and the like can be mentioned.

In the wood grain decorative material according to the embodiment of the present invention, the ratio of the area occupied by the wood texture layer 2 to the ratio of the area occupied by the wood texture layer 2 and the vessel pattern layer 3 is 1% or more and 99% or less. Characterized by The ratio of the area occupied by the wood texture layer 2 to the ratio of the area occupied by the wood texture layer 2 and the vessel pattern layer 3 is the wood texture pattern layer in the remaining portion where the resin pattern layer 4 is not provided on the one surface 1F side of the base material 1. It is synonymous with the ratio of the area occupied by 2.
If the ratio of the area occupied by the wooden texture layer 2 to the ratio of the area occupied by the wooden texture layer 2 and the vessel pattern layer 3 is less than 1%, the reproduction of the texture of the wood texture by the wooden texture layer 2 will be insufficient, and the authenticity will not be obtained. Wood grain patterns with texture cannot be expressed. Further, when the ratio of the area occupied by the wood texture pattern layer 2 to the ratio of the area occupied by the wood texture pattern layer 2 and the vessel pattern layer 3 exceeds 99%, the vessel pattern layer 3 cannot sufficiently reproduce the vessels seen in natural wood. As a result, it becomes impossible to express a wood grain pattern having a real texture. From these points of view, the ratio of the area occupied by the wooden texture layer 2 to the ratio of the area occupied by the wooden texture layer 2 and the vessel pattern layer 3 is preferably 5% or more and 90% or less, and 10% or more and 80% or less. more preferably 20% or more and 70% or less, and even more preferably 50% or more and 70% or less.
1 and 2, when the vessel pattern layer 3 is formed on the texture pattern layer 2, the texture pattern layer 2 below the vessel pattern layer 3 is not counted as the area of the texture pattern layer 2. For example, in the case of FIG. 2, the area indicated by symbol S2 is the area of the wooden texture layer 2, and the area indicated by symbol S3 is the area of the vessel pattern layer 3. As shown in FIG.
In addition, the ratio of the area occupied by the wood texture layer 2 to the ratio of the area occupied by the wood texture layer 2 and the vessel pattern layer 3 was determined using a microscope. It can be measured by calculating the ratio of the area occupied by the wood texture layer 2 to the ratio of the area occupied by the vessel pattern layer 3 and averaging the obtained calculated values.

[Base material]
The substrate 1 is not particularly limited as long as it is usually used as a decorative material, and resin substrates, metal substrates, ceramic substrates, fiber substrates, wood substrates, etc., can be used depending on the application. It can be selected as appropriate. Although each of the base materials described above may be used alone, for example, a composite of a resin base material and a wood base material, a composite of a resin base material and a metal base material, etc. may be used in any combination of laminates. good too. When the substrate 1 is a laminate, it may be configured such that an adhesive layer and a primer layer are further provided between the respective layers of the laminate.

Examples of the resin base material used as the base material 1 include those made of various synthetic resins. Synthetic resins include polyethylene, polypropylene, polymethylpentene, olefin resins such as various olefinic thermoplastic elastomers, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, vinyl chloride-vinyl acetate copolymer, ethylene-vinyl acetate copolymer. Vinyl resins such as ethylene-vinyl alcohol copolymers, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, ethylene glycol-terephthalic acid-isophthalic acid copolymers, polyester resins such as various polyester thermoplastic elastomers, poly Acrylic resins such as methyl methacrylate, polyethyl methacrylate and polybutyl acrylate, polyamide resins such as nylon 6 or nylon 66, cellulose triacetate and cellophane resins, polystyrene, polycarbonate resins, polyarylate resins and A polyimide resin etc. are mentioned.

Examples of the metal substrate used as the substrate 1 include those made of aluminum, duralumin aluminum alloy, iron, iron alloys such as stainless steel, titanium, copper, copper alloys such as brass, and the like. Moreover, as the base material 1, it is also possible to use a material obtained by applying these metals to the surface of a base material made of another material by plating or the like.

Examples of the ceramic-based substrate used as the substrate 1 include ceramic-based building materials such as gypsum, calcium silicate, cement, and wood chip cement, ceramics, glass, enamel, and baked tiles.

As the fibrous base material used as the base material 1, for example, paper base materials such as thin paper, kraft paper, titanium paper, linter paper, paperboard, and base paper for gypsum board can be used. In order to increase the interlayer strength between the fibers of the paper base material or between other layers and the paper base material, and to prevent fluffing, these paper base materials are further added with acrylic resin, styrene-butadiene rubber, melamine resin, urethane resin, etc. resin (impregnated with resin after paper making, or filled during paper making). Examples of resin-added paper substrates include inter-paper reinforced paper and resin-impregnated paper.
Further, examples of the fibrous base material used as the base material 1 include a vinyl wallpaper raw roll obtained by providing a vinyl chloride resin layer on the surface of a paper base material that is often used in the field of building materials.
In addition, as the fibrous base material used as the base material 1, coated paper, art paper, sulfuric acid paper, glassine paper, parchment paper, paraffin paper, Japanese paper, etc., which are used in the office field or ordinary printing and packaging, etc. mentioned.
As the fibrous base material used as the base material 1, woven fabrics and non-woven fabrics of various fibers having an appearance and properties similar to paper can also be mentioned, although they are distinguished from the paper base materials described above. Examples of various fibers include inorganic fibers such as glass fiber, asbestos fiber, potassium titanate fiber, alumina fiber, silica fiber and carbon fiber. Examples of various fibers include synthetic resin fibers such as polyester fibers, acrylic fibers and vinylon fibers.

Examples of the wood base material used as the base material 1 include veneers, plywoods, laminated lumbers, particle boards, medium density fiberboards (MDF ) and the like.

The thickness of the base material 1 is not particularly limited, and various thickness forms such as so-called films, sheets, plates, etc. can be used. If it is a substrate, it is preferably 20 μm or more and 150 μm or less, more preferably 30 μm or more and 125 μm or less, and even more preferably 40 μm or more and 100 μm or less. From the above viewpoint, the thickness of the base material 1 is preferably 20 g/m 2 or more and 150 g/m ² or less in terms of basis weight if it is a paper base material, and the basis weight is 25 g/m ^{2 or} more and 125 g/m ² or less. More preferably, the basis weight is 30 g/m ² or more and 100 g/m ² or less.

In order to improve the adhesion with other layers constituting the woodgrain decorative material, or to strengthen the adhesion with the adherend, one or both sides of the base material 1 are subjected to an oxidation method, unevenness, etc. A physical surface treatment such as a chemical method or a surface treatment such as a chemical surface treatment can be applied.
Examples of oxidation methods include corona discharge treatment, chromium oxidation treatment, flame treatment, hot air treatment, ozone-ultraviolet treatment, and the like. Examples of roughening methods include sandblasting and solvent treatment. These surface treatments are appropriately selected according to the type of the substrate 1, but in general, the corona discharge treatment method is preferably used from the viewpoints of surface treatment effects, operability, and the like.
In addition, a primer layer (not shown) is further provided on the surface of the substrate 1 in order to improve the interlayer adhesion between the substrate 1 and other layers, strengthen the adhesion to the adherend, etc. may be These primer layers will be described later.

[Wood texture layer]
The wood grain pattern layer 2 is a layer for expressing a wood grain pattern having a more realistic texture by reproducing the texture of wood.
In the present invention, the wood grain pattern means a portion other than the conduit pattern in the wood grain pattern. be.
Since the wood grain pattern originally exists over the entire surface of the wooden board, normally, as shown in FIGS. It is formed over the entire target area. In plan view, the vessel pattern and the wood texture complementarily cover the entire area of the wood texture, so it is also possible to form the wood texture only on the area other than the area of the vessel pattern. . However, in the case of such a form, high registration accuracy is required between the wood texture pattern and the conduit pattern at the time of printing, which increases the difficulty of manufacturing and lowers the yield. As shown, the wood texture layer 2 is formed over the entire surface 1F side of the substrate 1, and the vessel pattern layer 3 is laminated at a predetermined position on the wood texture layer 2. As shown in FIG.
However, if the wood grain pattern for which the design appearance is to be reproduced is obtained by coating the area of the wood plate other than the conduit part with a colored paint and exposing only the conduit part, the wood texture layer 2 is a resin pattern layer. It is also possible to form only the non-coated area (exposed area) of 4 and leave the area immediately below the resin pattern layer 4 unformed.
The wood texture layer 2 is a layer in which coloring agents made of pigments and/or dyes are appropriately arranged so as to obtain a desired design (pattern layer in a narrow sense), or a layer provided substantially uniformly over the entire surface of the base material 1. (overall solid layer). The wood texture layer 2 is formed by a printing method such as offset printing, flexo printing, gravure printing, screen printing, spray printing, or inkjet printing, or a transfer method for transferring a printed pattern. The wooden texture layer 2 may be a single layer, or may be formed from two or more layers.

The ink used to form the wood texture layer 2 is obtained by appropriately mixing a binder resin with a coloring agent such as a pigment or dye, an extender pigment, a solvent, a stabilizer, a plasticizer, a catalyst, a curing agent, and the like.
The binder resin is not particularly limited, and examples include acrylic resins, styrene resins, polyester resins, urethane resins, chlorinated polyolefin resins, vinyl chloride-vinyl acetate copolymer resins, polyvinyl butyral resins, and alkyd resins. Resins, petroleum-based resins, ketone resins, epoxy-based resins, melamine-based resins, fluorine-based resins, silicone-based resins, nitrocellulose-based resins, cellulose derivatives, rubber-based resins, and the like. These resins can be used alone or in combination of two or more.
Examples of coloring agents include inorganic pigments such as titanium white, antimony white, iron black, yellow lead, titanium yellow, red iron oxide, cadmium red, ultramarine, cobalt blue; quinacridone red, isoindolinone yellow, phthalocyanine blue, nickel- Organic pigments such as azo complexes, azomethine azo-based black pigments, and perylene-based black pigments; metallic pigments made of scale-like foils such as aluminum and brass; pearl luster consisting of scale-like foils such as titanium dioxide-coated mica and basic lead carbonate Coloring agents such as (pearl) pigments may be mentioned.
The wood texture layer 2 may contain various additives such as an antioxidant, an ultraviolet absorber, and a light stabilizer.

The wooden texture layer 2 is preferably formed so as to surround the vessel pattern layer 3 entirely. By forming the wood grain pattern layer 2 in this way, it is possible to further enhance the design of the wood grain decorative material.
The thickness of the wooden texture layer 2 is preferably 0.1 μm or more and 40 μm or less, more preferably 0.3 μm or more and 20 μm or less, and even more preferably 0.5 μm or more and 10 μm or less, from the viewpoint of exhibiting the design property of the pattern.

[Conduit pattern layer]
The conduit pattern layer 3 is a layer for expressing a wood grain pattern with a more realistic texture by reproducing the appearance of grooves (also called conduit grooves) in which conduits found in natural wood appear on the surface of the wood board. In addition, the vessel pattern layer 3 is a layer that can impart a design property with an uneven feeling due to visual effects and tactile sensations, depending on the relationship with the resin pattern layer 4 and the wooden texture layer 2 .
Since the conduit pattern layer 3 is completely exposed without being covered with the resin pattern layer 4, the details of the conduit can be expressed and the design property can be favorably exhibited. preferably not. In other words, it is preferable that the wood texture layer 2 exists between the resin pattern layer 4 and the vessel pattern layer 3 in plan view.

The vessel pattern layer 3 is obtained by disposing a coloring agent appropriately so as to obtain a desired design. The conduit pattern layer 3 is formed by a printing method such as offset printing, flexo printing, gravure printing, screen printing, spray printing, inkjet printing, or a transfer method for transferring a printed pattern. The conduit pattern layer 3 may be a single layer, or may be formed from two or more layers.

The ink used to form the vessel pattern layer 3 is obtained by appropriately mixing a binder resin with a coloring agent such as a pigment or dye, an extender, a solvent, a stabilizer, a plasticizer, a catalyst, a curing agent, and the like.
The binder resin and colorant are not particularly limited, and can be appropriately selected from the same binder resin and colorant as those listed above for the wooden texture layer 2 . The conduit part of the wooden board whose design appearance is to be reproduced becomes black or a dark color close to it due to the shadow of the illumination light, and usually, the conduit pattern layer 3 is above the wood texture pattern layer 2 as shown in FIGS. Therefore, the coloring agent used for the vessel pattern layer is usually selected so that it is dark in color such as black or dark brown and can achieve high hiding properties.
The vessel pattern layer 3 may also contain various additives such as an antioxidant, an ultraviolet absorber, and a light stabilizer.

The thickness of the conduit pattern layer 3 is preferably 0.1 μm or more and 40 μm or less, more preferably 0.3 μm or more and 20 μm or less, and even more preferably 0.5 μm or more and 10 μm or less, from the viewpoint of exhibiting good design properties.

Preferably, a matte layer 5 is provided on the conduit pattern layer 3 as shown in FIG. By providing the matte layer 5 on the conduit pattern layer 3, it is possible to create a difference in luster from the surrounding area, thereby expressing a visual unevenness.
As shown in FIG. 2, the matte layer 5 may be provided on the entire surface of the wood texture layer 2 and the vessel pattern layer 3, but the matte layer 5 generates a gloss difference with the surrounding area (wood texture layer 2). It is preferable to provide it immediately above and in the vicinity of the vessel pattern layer 3 , and more preferably to provide it exclusively just above the vessel pattern layer 3 .
In addition, since the matting layer 5 needs to be transparent to the vessel pattern layer 3 and the wooden texture layer 2 directly under it, a resin, a matting agent, and Select other additives.

The matting layer 5 preferably contains a matting agent from the viewpoint of improving the matting effect.
Examples of matting agents include inorganic fine particles and organic fine particles. Examples of inorganic fine particles include silica, alumina, aluminosilicate, kaolinite, calcium carbonate, barium sulfate, and glass.
Examples of organic fine particles include acrylic resins, polycarbonate resins, urethane resins, urea resins, benzoguanamine resins, and benzoguanamine-melamine-formaldehyde condensates.
As the matting agent, silica particles are suitable from the viewpoint of high matting effect and easy control of gloss. As the matting agent, one of the above-mentioned matting agents may be used alone, or two or more of them may be used in combination.
The average particle diameter of the matting agent is preferably 1.0 μm or more and 10 μm or less, more preferably 1.5 μm or more and 9 μm or less, and more preferably 2.0 μm or more and 7 μm, from the viewpoint of matting effect and gloss control. More preferably:

The end shape of the vessel pattern layer 3 in a plan view is preferably a constricted and rounded shape, as indicated by the dotted circle in FIG. 3 . Since the end portion of the vessel pattern layer 3 is narrowed and rounded, it is possible to impart a design close to that of a genuine wooden vessel.

[Resin pattern layer]
The resin pattern layer 4 is a layer for expressing a wood grain pattern having a more realistic texture by forming an uneven shape on the surface of the wood grain decorative material to impart a tactile sensation for reproducing the texture of wood or the like. be. In particular, the resin pattern layer 4 constitutes the projections of the uneven surface. The areas where the resin pattern layer 4 is not formed constitute recesses in the uneven surface shape.
Since the resin pattern layer 4 is usually formed on the wood texture layer 2 as shown in FIGS. 1 and 2, it is necessary to allow the wood texture layer 2 directly below it to be seen through. Therefore, the resin pattern layer is made transparent. When the color tone of the wood texture layer 2 immediately below is utilized as it is, it is colorless and transparent. In addition, when the color tone of the wood texture layer 2 immediately below is appropriately modulated, it is colored and transparent.
The resin pattern layer 4 is preferably composed of at least one selected from two-component curable resins, thermoplastic resins, thermosetting resins and ionizing radiation curable resins. preferable.

The two-component curing resin includes a two-component curing type urethane resin, a two-component curing type epoxy resin, a two-component curing type urethane-modified acrylic resin, a two-component curing type polyester resin, and the like using isocyanate as a curing agent.

Examples of thermoplastic resins include acrylic resins, cellulose resins, urethane resins, vinyl chloride resins, polyester resins, polyolefin resins, polycarbonate resins, nylon, polystyrene, and ABS resins.

Thermosetting resins include acrylic resins, urethane resins, phenol resins, urea melamine resins, epoxy resins, unsaturated polyester resins, silicone resins, and the like. A curing agent is added to the thermosetting resin as necessary.

An ionizing radiation-curable resin is a composition containing a compound having ionizing radiation-curable functional groups. Examples of ionizing radiation-curable functional groups include ethylenically unsaturated bond groups such as (meth)acryloyl groups, vinyl groups, and allyl groups, epoxy groups, and oxetanyl groups.
A compound having an ethylenically unsaturated bond group is preferable as the ionizing radiation-curable resin. In addition, from the viewpoint of suppressing damage to the resin layer during the process of manufacturing the decorative sheet, the ionizing radiation curable resin is more preferably a compound having two or more ethylenically unsaturated bond groups. Polyfunctional (meth)acrylate compounds having two or more bonding groups are more preferred. Both monomers and oligomers can be used as polyfunctional (meth)acrylate compounds.
Ionizing radiation means an electromagnetic wave or a charged particle beam that has energy quanta capable of polymerizing or cross-linking molecules, and usually ultraviolet (UV) or electron beam (EB) is used. Electromagnetic waves such as X-rays and γ-rays, and charged particle beams such as α-rays and ion beams can also be used.

Among polyfunctional (meth)acrylate compounds, bifunctional (meth)acrylate monomers include ethylene glycol di(meth)acrylate, bisphenol A tetraethoxy diacrylate, bisphenol A tetrapropoxy diacrylate, 1,6-hexane. diol diacrylate and the like.
Trifunctional or higher (meth)acrylate monomers include, for example, trimethylolpropane tri(meth)acrylate, pentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, dipentaerythritol hexa(meth)acrylate, di Examples include pentaerythritol tetra(meth)acrylate and isocyanuric acid-modified tri(meth)acrylate.
Further, the (meth)acrylate-based monomer may have a partially modified molecular skeleton, and may be modified with ethylene oxide, propylene oxide, caprolactone, isocyanuric acid, alkyl, cyclic alkyl, aromatic, bisphenol, or the like. can also be used.

Examples of polyfunctional (meth)acrylate oligomers include acrylate polymers such as urethane (meth)acrylate, epoxy (meth)acrylate, polyester (meth)acrylate, and polyether (meth)acrylate.
Urethane (meth)acrylates are obtained, for example, by reacting polyhydric alcohols and organic diisocyanates with hydroxy (meth)acrylates.
Preferred epoxy (meth)acrylates are (meth)acrylates obtained by reacting tri- or more functional aromatic epoxy resins, alicyclic epoxy resins, aliphatic epoxy resins, etc. with (meth)acrylic acid, bifunctional (Meth)acrylates obtained by reacting the above aromatic epoxy resins, alicyclic epoxy resins, aliphatic epoxy resins, etc. with polybasic acid and (meth)acrylic acid, and bifunctional or higher aromatic epoxy resins, It is a (meth)acrylate obtained by reacting an alicyclic epoxy resin, an aliphatic epoxy resin, or the like with a phenol and (meth)acrylic acid.
The ionizing radiation curable resins may be used singly or in combination of two or more.

When the ionizing radiation-curable resin is an ultraviolet-curable resin, the resin pattern layer-forming composition preferably contains additives such as a photopolymerization initiator and a photopolymerization accelerator.
Photopolymerization initiators include acetophenone, benzophenone, α-hydroxyalkylphenone, Michler's ketone, benzoin, benzyldimethylketal, benzoyl benzoate, α-acyloxy in the case of radical polymerization type such as (meth)acrylate monomers and oligomers. One or more selected from methesters, thioxanthones and the like can be mentioned.
The photopolymerization accelerator can reduce polymerization inhibition caused by air during curing and increase the curing speed. Examples of the photopolymerization accelerator include one or more selected from p-dimethylaminobenzoic acid isoamyl ester, p-dimethylaminobenzoic acid ethyl ester, and the like.

The resin pattern layer 4 may be colorless and transparent, but may be colored and transparent as necessary. When the resin pattern layer 4 is colored, it can be colored by adding a coloring agent (pigment or dye) to the composition for forming the resin pattern layer. As the colorant, a known or commercially available pigment or dye can be used as appropriate. The colorants may be used singly or in combination of two or more. Also, the amount of the coloring agent to be added can be appropriately set according to the desired color tone and the like.

The resin pattern layer 4 may contain fillers, matting agents, foaming agents, flame retardants, lubricants, antistatic agents, antioxidants, ultraviolet absorbers, light stabilizers, radical scavengers, soft components ( For example, various additives such as rubber) may be included.

The resin pattern layer 4 preferably contains particles 6 as shown in FIG. The particles 6 improve the surface physical properties of the resin pattern layer 4, such as imparting a tactile sensation, controlling luster, and improving scratch resistance.
Examples of the particles 6 include acrylic beads, urethane beads, silicone beads and nylon beads. The particles 6 may be used singly or in combination of two or more.

The surface of the resin pattern layer 4 preferably has the highest specular gloss at 60 degrees according to JIS Z8741:1997 on one side of the substrate 1 . The specular glossiness of the surface of the resin pattern layer 4 at 60 degrees of JIS Z8741: 1997 is the highest value on one side of the base material 1, so that the gloss difference with the surrounding area (wood texture pattern layer 2) can be generated to improve the visual unevenness.
In order to maximize the specular glossiness of the surface of the resin pattern layer 4 on one side of the substrate 1, the particles 6 have a refractive index n ₀ of the resin pattern layer forming composition and a refractive index of the particles 6 It is preferable that the relationship of the ratio n satisfies the following formula (1).
|n ₀ −n|≦0.14 (1)
By satisfying the formula (1), the luster can be easily controlled by the resin pattern layer 4 and the particles 6 . Formula (1) is more preferably 0.10 or less, even more preferably 0.05 or less, and even more preferably 0.01 or less.

The average particle diameter of the particles 6 is preferably 10 μm or more and 40 μm or less, more preferably 15 μm or more and 35 μm or less, and more preferably 20 μm or more and 30 μm or less, from the viewpoint of effectively improving the design property due to the tactile sensation and gloss difference. It is even more preferable to have
The average particle diameter of the particles 6 in the present invention is determined by using a Shimadzu laser diffraction particle size distribution measuring device "SALD-2100-WJA1", using compressed air to inject powder to be measured from a nozzle, It is the average of the measured values by the injection-type dry measurement method, which is dispersed in the air and measured.

The amount of the particles 6 to be blended is preferably 50 parts by mass or less, and 45 parts by mass with respect to 100 parts by mass of the resin for forming the resin pattern layer, from the viewpoint of improving the effect of gloss difference, three-dimensional moldability, and designability. It is more preferably 40 parts by mass or less, more preferably 40 parts by mass or less. It should be noted that even a very small amount (for example, one) of the particles 6 can impart a predetermined tactile sensation as long as they are brought into contact with a finger or the like. However, in order to ensure that the desired tactile sensation can be expressed no matter where the resin pattern layer 4 of the decorative material is touched, it is necessary to use 0.5 parts by mass or more, preferably 0.5 parts by mass or more, based on 100 parts by mass of the resin for forming the resin pattern layer. It is preferably 1 part by mass or more.

When the resin pattern layer 4 contains the particles 6, the thickness of the resin pattern layer 4 is preferably 50% or more and 300% or less of the average particle diameter of the particles 6 from the viewpoint of retaining the particles 6, and is preferably 60% or more and 250% or less. More preferably, the thickness of the resin pattern layer 4 is 75% or more and 200% or less. 0 μm or more and 10.0 μm or less, more preferably 2.0 μm or more and 8.0 μm or less, and even more preferably 3.0 μm or more and 6.0 μm or less.

[Other configurations]
The wood grain decorative material preferably further comprises a backing substrate (not shown) on the side opposite to the side on which the wood texture pattern layer 2, vessel pattern layer 3 and resin pattern layer 4 are provided. The backing base material is provided as necessary in order to reinforce the wood grain decorative material, impart adhesion to the adherend, and impart concealability.

A resin sheet, paper, nonwoven fabric, woven fabric, metal foil, or the like can be used as the backing base material. As the resin sheet, a sheet made of acrylic resin, polyester resin, polyolefin resin, ABS resin, or the like can be used.

The thickness of the backing substrate is preferably 1.0 mm or more and 50 mm or less, more preferably 1.5 mm or more and 40 mm or less, and even more preferably 2.5 mm or more and 30 mm or less, from the viewpoint of improving reinforcing properties, adhesion properties, and hiding properties. .

In the wood grain decorative material, an adhesive layer (not shown) is provided between at least one of the substrate 1, the wood texture layer 2, the vessel pattern layer 3, the resin pattern layer 4, the matte layer 5 and the backing substrate. It is preferable that The adhesive layer has a function of assisting the bonding of each layer of the substrate 1, the wood texture layer 2, the vessel pattern layer 3, the resin pattern layer 4, the matte layer 5, and the backing substrate, and strengthens the bonding of each layer. can do.
The adhesive layer is preferably at least one selected from two-component curable resins, thermoplastic resins, thermosetting resins and ionizing radiation curable resins.

In addition, the wood grain decorative material has a primer layer (not shown) between at least one of the substrate 1, the wood texture layer 2, the vessel pattern layer 3, the resin pattern layer 4, the matte layer 5, and the backing substrate. is preferably provided. The primer layer has a function of assisting the bonding of each layer of the substrate 1, the wood texture layer 2, the vessel pattern layer 3, the resin pattern layer 4, the matte layer 5 and the backing substrate, and strengthens the bonding of each layer. be able to.
As the primer layer, a resin that improves the adhesion of both layers facing each other with the primer layer therebetween may be appropriately selected, and there is no particular limitation.

According to the wood grain decorative material according to the embodiment of the present invention, it is possible to provide a decorative material having a design close to that of real wood due to visual effects and tactile sensations.

EXAMPLES Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited by these examples.

[Measurement and evaluation]
The transfer sheets produced in Examples and Comparative Examples were subjected to the following measurements and evaluations. Table 1 shows the results.

<Designability>
A design check was performed on the surfaces of the wood grain decorative materials produced in Examples and Comparative Examples. 2 points for those that feel a design that is very close to real wood, 1 point for those that feel a design that is close to real wood, and 0 points for those that feel almost no design close to real wood, 20 subjects. evaluated and calculated the average score.
A: Average score of 1.5 or more B: Average score of 1.0 or more and less than 1.5 C: Average score of less than 1.0

<Tactile sensation>
A finger touch check was performed on the surfaces of the woodgrain decorative materials produced in Examples and Comparative Examples. 2 points for those that feel the unevenness that is very close to real wood, 1 point for those that feel the unevenness close to real wood, and 0 points for those that feel almost no unevenness similar to real wood. and calculated the average score.
A: Average score of 1.6 or more B: Average score of 1.3 or more and less than 1.6 C: Average score of 1.0 or more and less than 1.3 D: Average score of less than 1.0 of

[Example 1]
As the base material 1, a colored base paper for building materials having a basis weight of 30 g/m ² is prepared, and on one side thereof, a wood texture layer is formed using acrylic resin and nitrocellulose as binders and titanium white, red iron oxide and yellow lead as colorants. A solid layer with a coating amount of 5 g/m ² was applied to the entire surface by gravure printing to form a wood texture layer 2 .
Next, on the wood texture layer 2, a conduit pattern layer 3, which is a conduit pattern, is formed by gravure printing using an ink for forming a conduit pattern layer containing nitrocellulose as a binder and a colorant containing red iron oxide as a main component. formed by In addition, the shape of the end portion of the conduit pattern was narrowed and rounded.
Next, a matte layer 5 is formed on the entire surface of the wood texture layer 2 and the vessel pattern layer 3 by gravure printing using a matte layer forming ink containing silica as a matting agent in a two-component curing type polyurethane resin. bottom. The matte layer 5 had a thickness of 5 μm from the surface of the wood texture layer 2 .
Next, resin pattern layer 4 was formed on mat layer 5 by gravure printing using an ink for forming a resin pattern layer containing silica having an average particle size of 3 μm as a matting agent in a two-component curing type polyurethane resin. . At this time, the pattern plate used in gravure printing has a wood texture layer 2 between the resin pattern layer 4 and the vessel pattern layer 3 in plan view. In this pattern, the ratio (area ratio) of the area occupied by the wooden texture layer 2 to the ratio of the area occupied by the pattern layer 3 is 20%. The thickness of the resin pattern layer 4 was 5 μm from the surface of the matte layer 5 .
Next, curing was performed at 70° C. for 24 hours to obtain a wood grain decorative material in Example 1.
The resulting wood grain decorative materials were evaluated for design and tactile feel. Table 1 shows the results.

[Example 2]
In the pattern plate for forming the resin pattern layer 4 by gravure printing, the ratio (area ratio) of the area occupied by the wood texture layer 2 to the ratio of the area occupied by the wood texture layer 2 and the conduit pattern layer 3 is 60%. A woodgrain decorative material of Comparative Example 1 was obtained in the same manner as in Example 1, except that the pattern was used.
The resulting wood grain decorative materials were evaluated for design and tactile feel. Table 1 shows the results.

[Example 3]
In the pattern plate for forming the resin pattern layer 4 by gravure printing, the ratio (area ratio) of the area occupied by the wood texture layer 2 to the ratio of the area occupied by the wood texture layer 2 and the vessel pattern layer 3 is 90%. A woodgrain decorative material of Comparative Example 1 was obtained in the same manner as in Example 1, except that the pattern was used.
The resulting wood grain decorative materials were evaluated for design and tactile feel. Table 1 shows the results.

[Example 4]
A woodgrain decorative material of Example 2 was obtained in the same manner as in Example 2, except that acrylic beads having an average particle size of 20 μm were contained as the particles 6 in the ink for forming the resin pattern layer.
The resulting wood grain decorative materials were evaluated for design and tactile feel. Table 1 shows the results.

[Comparative Example 1]
In the pattern plate for forming the resin pattern layer 4 by gravure printing, the ratio (area ratio) of the area occupied by the wood texture layer 2 to the ratio of the area occupied by the wood texture layer 2 and the vessel pattern layer 3 is 0%. A woodgrain decorative material of Comparative Example 1 was obtained in the same manner as in Example 1, except that the pattern was used.
The resulting wood grain decorative materials were evaluated for design and tactile feel. Table 1 shows the results.

The wood grain decorative materials in Examples 1 to 4 had the highest specular gloss at 60 degrees according to JIS Z8741:1997 on the surface of the resin pattern layer on one side of the substrate. The specular glossiness of the surface of the resin pattern layer at 60 degrees of JIS Z8741: 1997 is the highest on one side of the base material, thereby generating a gloss difference with the surrounding area (wood texture pattern layer). A sense of visual unevenness was obtained through the use of this material, and it had a design close to that of real wood.
In the wood grain decorative material in Comparative Example 1, the specular glossiness at 60 degrees of JIS Z8741: 1997 on the surface of the resin pattern layer had the highest value on one side of the base material, but the wood grain pattern layer 2 Since the ratio of the area occupied (area ratio) was 0%, a sufficient feeling of unevenness could not be obtained.

The wood grain decorative material of the present invention has a design that is close to real wood due to its visual effects and tactile sensations, and is used for building interior and exterior components such as walls, ceilings and floors, window frames, doors, handrails, and widths. In addition to fittings such as wood, rims, and malls, it is suitably used as a layer for constructing interior and exterior members for kitchens, furniture or cabinets such as light electrical appliances and OA equipment, and interior and exterior members of vehicles.

DESCRIPTION OF SYMBOLS 1... Base material 2... Wood-skin pattern layer 3... Vessel pattern layer 4... Resin pattern layer 5... Matte layer

Claims (6)

a substrate;
a resin pattern layer provided on a part of one surface side of the base material;
A wooden texture layer and a vessel pattern layer provided on the remainder of one surface side of the base material,
The ratio of the area occupied by the wood texture layer to the ratio of the area occupied by the wood texture layer and the vessel pattern layer is 1% or more and 99% or less,
The resin pattern layer contains particles, and the relationship between the refractive index n0 of the composition for forming a resin pattern layer other than the particles and the refractive index n of the particles satisfies the following formula (1) _. material.
|n ₀ −n|≦0.14 (1) 2. The wood grain decorative material according to claim 1, wherein said wood texture pattern layer is present between said resin pattern layer and said vessel pattern layer in plan view. The woodgrain decorative material according to claim 1 or 2, further comprising a matte layer on the vessel pattern layer. The woodgrain decorative material according to any one of claims 1 to 3, wherein the vessel pattern layer has an end shape that is constricted and rounded. The woodgrain decorative material according to any one of claims 1 to 4 , wherein the particles have an average particle diameter of 10 µm or more and 40 µm or less. The wood grain tone according to any one of claims 1 to 5 , wherein the specular gloss of the surface of the resin pattern layer at 60 degrees of JIS Z8741: 1997 has the highest value on one side of the base material. cosmetic material.

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