WO2020067293A1

WO2020067293A1 - Woody decorative material

Info

Publication number: WO2020067293A1
Application number: PCT/JP2019/037868
Authority: WO
Inventors: 小笠原　健; 一葉比嘉; 祥太西根; 紘己藤井; 真次岩田; 岡本　優
Original assignee: 大日本印刷株式会社
Priority date: 2018-09-26
Filing date: 2019-09-26
Publication date: 2020-04-02
Also published as: JP7264173B2; JPWO2020067293A1

Abstract

Provided is a woody decorative material having a design similar to real wood by a visual effect and texture. The woody decorative material is provided with: a base material 1; a resin pattern layer 4 provided on a part on one surface side of the base material 1; and a wood surface pattern layer 2 and a vessel pattern layer 3 provided on a remaining section on the one surface side of the base material 1, wherein the area percentage of the wood surface pattern layer 2 to the area percentage of the wood surface pattern layer 2 and the vessel pattern layer 3 is 1-99%.

Description

Wood-grained makeup material

The present invention relates to a decorative material, particularly to a woodgrain decorative material.

2. Description of the Related Art A decorative material is used to impart a design property to surfaces of building materials, furniture, and the like. For wood-grained decorative materials, by emphasizing the uneven shape of the surface or shaping the uneven shape synchronized with the pattern, it achieves a high design effect by obtaining a visual effect and tactile feeling close to real wood A device has been devised (for example, see Patent Document 1).
The woodgrain decorative material proposed in Patent Literature 1 has a woodgrain pattern composed of a combination of a positive print layer and a negative print layer that cover planes complementarily to each other, and the woodgrain pattern is formed by the positive print layer. Are formed, and a convex portion of the grain pattern is formed by a negative print layer having a large film thickness to express a three-dimensional effect of the grain pattern.

JP-B-53-331

In recent years, with the increasing demand for higher quality or more diversified needs, designs that are closer to real wood have been demanded, and it has been necessary to respond to more stringent demands.
However, the woodgrain-like decorative material proposed in Patent Literature 1 has insufficient visual effect and tactile reproduction fidelity, and cannot be said to have design properties close to real wood.

In view of the above problems, an object of the present invention is to provide a woodgrain decorative material having a design effect close to that of real wood with a visual effect and a tactile sensation.

In order to solve the above-described problems, the present inventors have conducted intensive studies and as a result, specified a resin pattern layer provided on one surface side of the base material, a position where the wood texture pattern layer and the conduit pattern layer are provided, and a specific ratio of the occupied area. It has been found that the above problem can be solved by the following. 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 pattern layer and a conduit pattern layer provided on the remaining portion on one surface side of the base material. The woodgrain decorative material, wherein a ratio of an area occupied by the wood pattern layer to a ratio of an area occupied by the wood pattern layer and the conduit pattern layer is 1% or more and 99% or less.
[2] The woodgrain-like decorative material according to [1], wherein the woodgrain pattern layer exists between the resin pattern layer and the conduit pattern layer in plan view.
[3] The woodgrain-like decorative material according to [1] or [2], further comprising a matte layer on the conduit pattern layer.
[4] The woodgrain-like decorative material according to any one of [1] to [3], wherein an end portion of the conduit pattern layer is narrowed and rounded.
[5] The woodgrain decorative material according to any one of [1] to [4], wherein the resin pattern layer contains particles.
[6] The woodgrain-like decorative material according to [5], wherein the average particle size of the particles is 10 μm or more and 40 μm or less.
[7] The grain of any of [1] to [6], wherein the surface of the resin pattern layer has the highest specular glossiness at 60 degrees in JIS Z8741: 1997 on one surface side of the base material. Toning materials.

According to the present invention, it is possible to provide a woodgrain decorative material having a design property close to that of real wood by a visual effect and a tactile sensation.

It is a typical perspective view of the woodgraining decorative material concerning an embodiment of the invention. It is a typical sectional view (the 1) of the woodgraining decorative material concerning an embodiment of the invention. It is a mimetic diagram showing the end part shape of the conduit pattern layer of the woodgraining decorative material according to the embodiment of the present invention. It is a typical sectional view (the 2) of the woodgraining decorative material concerning an embodiment of the invention.

Hereinafter, embodiments of the present invention will be described 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 plane dimension, the ratio of the thickness of each layer, and the like are different from actual ones. Therefore, specific thicknesses and dimensions should be determined in light of the following description. In addition, it is needless to say that dimensional relationships and ratios are different between drawings.

(Embodiment)
As shown in FIG. 1, a woodgrain-like decorative material according to an embodiment of the present invention includes a base material 1 and a resin pattern layer 4 provided so as to cover a part of one surface 1F side of the base material 1. And a texture pattern layer 2 and a conduit pattern layer 3 provided so as to cover the remaining portion on the one surface 1F side of the base material 1.
In order to have a design similar to that of real wood, it is preferable that the edges constituting the wood pattern layer 2, the conduit pattern layer 3, and the resin pattern layer 4 include a curved line.
There are no particular restrictions on the wood intended to reproduce the design using the woodgraining decorative material, and examples include cedar, cypress, walnut, pine, and cherry.

In the woodgrain decorative material according to the embodiment of the present invention, the ratio of the area occupied by the wood pattern layer 2 to the area occupied by the wood pattern layer 2 and the conduit pattern layer 3 is 1% or more and 99% or less. Features. The ratio of the area occupied by the wood pattern layer 2 to the ratio of the area occupied by the wood pattern layer 2 and the conduit pattern layer 3 is determined by the wood pattern layer in the remaining portion of the base material 1 where the resin pattern layer 4 is not provided on one side 1F Synonymous with the ratio of the area occupied by 2.
When the ratio of the area occupied by the wood pattern layer 2 to the ratio of the area occupied by the wood pattern layer 2 and the conduit pattern layer 3 is less than 1%, the reproduction of the wood texture by the wood pattern layer 2 becomes insufficient, and the real The wood grain pattern having a texture cannot be expressed. When the ratio of the area occupied by the wood pattern layer 2 to the ratio of the area occupied by the wood pattern layer 2 and the conduit pattern layer 3 exceeds 99%, the conduit pattern layer 3 does not sufficiently reproduce the conduit seen in the natural tree. Therefore, it is not possible to express a wood grain pattern having a real texture. From these viewpoints, the ratio of the area occupied by the wood pattern layer 2 to the ratio of the area occupied by the wood pattern layer 2 and the conduit pattern layer 3 is preferably 5% to 90%, and more preferably 10% to 80%. More preferably, it is more preferably 20% or more and 70% or less, and even more preferably 50% or more and 70% or less.
As shown in FIGS. 1 and 2, when the duct pattern layer 3 is formed on the grain pattern layer 2, the grain pattern layer 2 below the duct pattern layer 3 is not counted as the area of the grain pattern layer 2. For example, in the case of FIG. 2, the area indicated by reference numeral S2 is the area of the wood pattern layer 2, and the area indicated by reference numeral S3 is the area of the conduit pattern layer 3.
Note that the ratio of the area occupied by the wood pattern layer 2 to the ratio of the area occupied by the wood pattern layer 2 and the conduit pattern layer 3 is determined by using a microscope by using the microscope at any 30 places on the surface of the woodgrain decorative material. The ratio can be measured by calculating the ratio of the area occupied by the wood pattern layer 2 to the ratio of the area occupied by the conduit pattern layer 3 and averaging the calculated values.

[Base material]
The base material 1 is not particularly limited as long as it is generally used as a decorative material, and may be a resin base material, a metal base material, a ceramic base material, a fibrous base material, a wood base material, or the like depending on the application. It can be selected as appropriate. Each of the above-mentioned base materials may be used alone, for example, a laminate of any combination of a composite of a resin base and a wood base, a composite of a resin base and a metal base, and the like. Is also good. When the substrate 1 is a laminate, a configuration in which an adhesive layer and a primer layer are further provided between respective layers of the laminate may be employed.

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

金属 Examples of the metal substrate used as the substrate 1 include those made of aluminum, iron alloys such as duralumin aluminum alloy, iron, stainless steel, and the like, and copper alloys such as titanium, copper, and brass. Further, as the substrate 1, a material obtained by plating these metals on the surface of a substrate made of another material can also be used.

窯 Examples of the ceramic base material used as the base material 1 include ceramic building materials such as gypsum, calcium silicate, cement, wood chip cement, ceramics, glass, enamel, and fired tile.

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 gypsum board base paper can be used. These paper substrates are used to increase the interlaminar strength between fibers of the paper substrate or between other layers and the paper substrate, and to prevent fluffing, and further include acrylic resin, styrene butadiene rubber, melamine resin, urethane resin, etc. May be added (impregnated with resin after papermaking or filled during papermaking). Examples of the paper base material to which the resin is added include a paper-reinforced paper, a resin-impregnated paper, and the like.
Examples of the fibrous base material used as the base material 1 include a raw material of vinyl wallpaper having a vinyl chloride resin layer provided on the surface of a paper base material often used in the field of building materials.
Examples of the fibrous base material used as the base material 1 include coated paper, art paper, parchment paper, glassine paper, parchment paper, paraffin paper, and Japanese paper used in the office field or ordinary printing and packaging. No.
Further, the fibrous base material used as the base material 1 is distinguished from the above-described paper base material, and includes a woven fabric and a nonwoven fabric of various fibers having an appearance and properties similar to paper. Various fibers include inorganic fibers such as glass fiber, asbestos fiber, potassium titanate fiber, alumina fiber, silica fiber, and carbon fiber. Examples of the various fibers include synthetic resin fibers such as polyester fibers, acrylic fibers, and vinylon fibers.

Examples of the wood-based base material used as the base material 1 include veneers, plywood, laminated wood, particle board, and medium-density fiberboard (MDF) of various woods such as cedar, pine, cypress, oak, oak, lauan, and teak. ) And the like.

The thickness of the base material 1 is not particularly limited, and various thickness forms called so-called films, sheets, plates, and the like can be used. From the viewpoint of mechanical strength, handleability, and economy, In the case of a substrate, the thickness 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, and more preferably 25 g / m ² or more and 125 g / m ² or less as long as it is a paper base material. More preferably, the basis weight is more preferably 30 g / m ² or more and 100 g / m ² or less.

The base material 1 is provided on one or both sides thereof with an oxidation method, unevenness, or the like to improve the adhesion to other layers constituting the woodgrain decorative material or to enhance the adhesion to the adherend. A surface treatment such as a physical surface treatment such as a chemical method or a chemical surface treatment can be performed.
Examples of the oxidation method include a corona discharge treatment, a chromium oxidation treatment, a flame treatment, a hot air treatment, and an ozone-ultraviolet treatment method. 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 base material 1. In general, a corona discharge treatment is preferably used from the viewpoints of surface treatment effects and operability.
In addition, a configuration in which a primer layer (not shown) is further provided on the surface of the base material 1 in order to improve interlayer adhesion between the base material 1 and another layer, strengthen adhesion to an adherend, and the like. It may be. These primer layers will be described later.

[Wood texture layer]
The wood grain pattern layer 2 is a layer for reproducing a wood grain feeling or the like and expressing a wood grain pattern having a more real texture.
In the present invention, the grain pattern means a portion other than the conduit pattern in the grain pattern. For example, in the case of wood having spots (fu) and annual rings, the autumn material portion and the spring material portion are also patterns. is there.
Since the wood pattern originally exists over the entire surface of the wood board, the wood grain pattern usually forms a wood grain pattern on the surface 1F on one side 1F of the base material 1 as shown in FIGS. It is formed over the entire region to be formed. In plan view, since the conduit pattern and the wood pattern are both complementary and cover the entire area of the wood pattern, the wood pattern can be formed only in other areas except for the area of the pipe pattern. . However, in the case of such a form, high precision is required for the register accuracy between the wood pattern and the conduit pattern at the time of printing, the difficulty of production increases, and the yield decreases. As shown in the drawing, the wood pattern layer 2 is formed over the entire area on the one surface 1F side of the base material 1, and the conduit pattern layer 3 is formed at a predetermined position on the wood pattern layer 2 by lamination.
However, in the case where the grain pattern to reproduce the design appearance is such that the area other than the conduit portion of the wood board is coated with colored paint to expose only the conduit portion, the wood pattern layer 2 is formed of the resin pattern layer. 4 may be formed only in the non-covered area (exposed area), and may not be formed in the area immediately below the resin pattern layer 4.
The wood texture pattern layer 2 is a layer in which a colorant composed of a pigment and / or a dye is appropriately arranged so as to obtain a desired design (a pattern layer in a narrow sense), or a layer in which the colorant is provided substantially uniformly over the entire surface of the substrate 1. (Solid layer on the entire surface). The wood pattern layer 2 is formed by a printing method such as offset printing, flexographic printing, gravure printing, screen printing, spray printing, or inkjet printing, and a transfer method of transferring a printed pattern. The wood pattern layer 2 may be a single layer, or may be formed from two or more layers.

As the ink used for forming the wood pattern layer 2, an ink obtained by appropriately mixing a coloring agent such as a pigment and a dye, an extender pigment, a solvent, a stabilizer, a plasticizer, a catalyst, a curing agent, and the like with a binder resin is used.
The binder resin is not particularly limited, and examples thereof include an acrylic resin, a styrene resin, a polyester resin, a urethane resin, a chlorinated polyolefin resin, a vinyl chloride-vinyl acetate copolymer resin, a polyvinyl butyral resin, and an alkyd resin. Resins, petroleum resins, ketone resins, epoxy resins, melamine resins, fluorine resins, silicone resins, nitrified cotton resins, cellulose derivatives, rubber resins, and the like. These resins can be used alone or in combination of two or more.
Examples of the coloring agent include inorganic pigments such as titanium white, antimony white, iron black, graphite, 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 black pigments and perylene black pigments; metallic pigments consisting of scale-like foil pieces such as aluminum and brass; pearl luster consisting of scale-like foil pieces such as titanium dioxide-coated mica and basic lead carbonate (Pearl) coloring agents such as pigments.
The wood texture layer 2 may contain various additives such as an antioxidant, an ultraviolet absorber, and a light stabilizer.

The wood pattern layer 2 is preferably formed so as to surround the entire periphery of the conduit pattern layer 3. By forming the wood pattern layer 2 in this manner, the design of the woodgrain decorative material can be further improved.
The thickness of the wood 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 still more preferably 0.5 μm or more and 10 μm or less, from the viewpoint of satisfactorily exhibiting the design of the picture.

[Conduit pattern layer]
The conduit pattern layer 3 is a layer for reproducing the appearance of a groove (also referred to as a conduit groove) in which a conduit found in a natural tree appears on the surface of a wood board to express a wood grain pattern having a more authentic texture. The conduit pattern layer 3 is a layer that can provide a design effect with a visual effect and an unevenness due to a tactile sensation, due to the relationship with the resin pattern layer 4 and the wood pattern layer 2.
Since the conduit pattern layer 3 is entirely exposed without being covered with the resin pattern layer 4, the details of the conduit can be expressed and the design can be exhibited well, so that the overlapping portion with the resin pattern layer 4 is reduced. Preferably not. In other words, it is preferable that the wood pattern layer 2 exists between the resin pattern layer 4 and the conduit pattern layer 3 in a plan view.

(4) The conduit pattern layer 3 is a layer in which a colorant is appropriately arranged so as to obtain a desired design. The conduit pattern layer 3 is formed by a printing method such as offset printing, flexographic printing, gravure printing, screen printing, spray printing, ink jet printing, and a transfer method of transferring a printed pattern. The conduit pattern layer 3 may be a single layer, or may be formed from two or more layers.

As the ink used for forming the conduit pattern layer 3, a mixture of a binder resin, a coloring agent such as a pigment and a dye, an extender pigment, a solvent, a stabilizer, a plasticizer, a catalyst, a curing agent, and the like is appropriately used.
The binder resin and the colorant are not particularly limited, and may be appropriately selected from those similar to those listed above as the binder resin and the colorant for the wood pattern layer 2. The duct part of the wood board to be reproduced in appearance is black or a dark color close to it due to the shading of the illumination light. In general, the duct pattern layer 3 is placed on the wood pattern layer 2 as shown in FIGS. Therefore, the colorant used for the conduit pattern layer is usually selected so as to be dark, such as black and brown, and to realize high concealment.
The conduit pattern layer 3 may also contain various additives such as an antioxidant, an ultraviolet absorber, and a light stabilizer.

(4) The thickness of the conduit pattern layer 3 is preferably from 0.1 μm to 40 μm, more preferably from 0.3 μm to 20 μm, even more preferably from 0.5 μm to 10 μm from the viewpoint of exhibiting good design.

It is preferable to provide a matting layer 5 on the conduit pattern layer 3 as shown in FIG. By providing the matting layer 5 on the conduit pattern layer 3, a gloss difference from the surrounding area can be generated, and a visual unevenness can be exhibited.
As shown in FIG. 2, the matte layer 5 may be provided on the entire surface of the wood pattern layer 2 and the conduit pattern layer 3. However, the mat layer 5 generates a difference in gloss from the surrounding area (the wood pattern layer 2). Considering that a visual unevenness is exhibited by the above, it is preferably provided directly above and in the vicinity of the conduit pattern layer 3, and more preferably provided only directly above the conduit pattern layer 3.
In addition, since the glossy layer 5 needs to be able to see through the conduit pattern layer 3 and the wood texture pattern layer 2 immediately below it, a resin, a glossing agent, and a transparent, more preferably colorless and transparent, are used. Select other additives.

The matting layer 5 preferably contains a matting agent from the viewpoint of improving the matting effect.
Examples of the matting agent include inorganic fine particles and organic fine particles. Examples of the inorganic fine particles include silica, alumina, aluminosilicate, kaolinite, calcium carbonate, barium sulfate, and glass.
Examples of the organic fine particles include acrylic resins, polycarbonate resins, urethane resins, urea resins, benzoguanamine resins, benzoguanamine-melamine-formaldehyde condensates, and the like.
As the matting agent, silica particles are preferred from the viewpoint that the matting effect is high and the gloss can be easily controlled. Further, as the matting agent, the above-mentioned one kind may be used alone, or two or more kinds may be used in combination.
The average particle size 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. It is more preferred that:

端 The end shape of the conduit pattern layer 3 in plan view is preferably narrowed and rounded as shown by a dotted circle in FIG. Since the shape of the end portion of the conduit pattern layer 3 is narrowed and rounded, it is possible to impart a design property close to that of a real wood conduit.

[Resin pattern layer]
The resin pattern layer 4 is a layer for expressing a wood grain pattern having a more real texture by giving a tactile sensation for reproducing a wood texture by forming an uneven shape on the surface of the wood grain decorative material. is there. In particular, the resin pattern layer 4 constitutes a convex part of the surface irregularities. The non-formation region of the resin pattern layer 4 forms a concave portion of the surface unevenness.
Since the resin pattern layer 4 is usually formed on the wood pattern layer 2 as shown in FIGS. 1 and 2, it is necessary to make the wood pattern layer 2 immediately below it visible. Therefore, the resin pattern layer is made transparent. When the color tone of the bark pattern layer 2 immediately below is utilized as it is, it is colorless and transparent. In addition, when the color tone of the wood pattern 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 a two-component curable resin, a thermoplastic resin, a thermosetting resin, and an ionizing radiation-curable resin. preferable.

Examples of the two-component curable resin include two-component curable urethane resins using isocyanate as a curing agent, two-component curable epoxy resins, two-component curable urethane-modified acrylic resins, and two-component curable polyester resins.

Examples of the thermoplastic resin include an acrylic resin, a cellulose resin, a urethane resin, a vinyl chloride resin, a polyester resin, a polyolefin resin, a polycarbonate resin, nylon, polystyrene, and an ABS resin.

Examples of the thermosetting resin include an acrylic resin, a urethane resin, a phenol resin, a urea melamine resin, an epoxy resin, an unsaturated polyester resin, and a silicone resin. A curing agent is added to the thermosetting resin as needed.

The ionizing radiation-curable resin is a composition containing a compound having an ionizing radiation-curable functional group. Examples of the ionizing radiation-curable functional group include an ethylenically unsaturated bond group such as a (meth) acryloyl group, a vinyl group and an allyl group, and an epoxy group and an oxetanyl group.
As the ionizing radiation-curable resin, a compound having an ethylenically unsaturated bond group is preferable. In addition, from the viewpoint of suppressing the resin layer from being damaged in the process of manufacturing the decorative sheet, a compound having two or more ethylenically unsaturated bonding groups is more preferable as the ionizing radiation-curable resin. Polyfunctional (meth) acrylate compounds having two or more bonding groups are more preferred. As the polyfunctional (meth) acrylate compound, any of a monomer and an oligomer can be used.
In addition, ionizing radiation means, among electromagnetic waves or charged particle beams, those having energy quanta capable of polymerizing or cross-linking molecules. 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 the polyfunctional (meth) acrylate compounds, bifunctional (meth) acrylate monomers include ethylene glycol di (meth) acrylate, bisphenol A tetraethoxy diacrylate, bisphenol A tetrapropoxy diacrylate, and 1,6-hexane. Diol diacrylate and the like.
Examples of trifunctional or higher functional (meth) acrylate monomers include, for example, trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate, Examples include pentaerythritol tetra (meth) acrylate and isocyanuric acid-modified tri (meth) acrylate.
The (meth) acrylate-based monomer may have a partially modified molecular skeleton, and may be modified by ethylene oxide, propylene oxide, caprolactone, isocyanuric acid, alkyl, cyclic alkyl, aromatic, bisphenol, or the like. Can also be used.

Examples of the polyfunctional (meth) acrylate oligomer include acrylate polymers such as urethane (meth) acrylate, epoxy (meth) acrylate, polyester (meth) acrylate, and polyether (meth) acrylate.
Urethane (meth) acrylate is obtained, for example, by reacting a polyhydric alcohol and an organic diisocyanate with hydroxy (meth) acrylate.
Preferred epoxy (meth) acrylates are (meth) acrylates obtained by reacting a (meth) acrylic acid with a trifunctional or higher functional aromatic epoxy resin, alicyclic epoxy resin, aliphatic epoxy resin, or the like. (Meth) acrylates obtained by reacting the above aromatic epoxy resin, alicyclic epoxy resin, aliphatic epoxy resin, etc. with a polybasic acid and (meth) acrylic acid, and a bifunctional or higher functional aromatic epoxy resin, (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 can be used alone or in combination of two or more.

When the ionizing radiation-curable resin is an ultraviolet-curable resin, the composition for forming a resin pattern layer preferably contains additives such as a photopolymerization initiator and a photopolymerization accelerator.
As a photopolymerization initiator, in the case of a radical polymerization type such as a (meth) acrylate monomer or oligomer, acetophenone, benzophenone, α-hydroxyalkylphenone, Michler's ketone, benzoin, benzyldimethyl ketal, benzoylbenzoate, α-acyloxy And at least one selected from thioxanthones and the like.
The photopolymerization accelerator can reduce polymerization inhibition by air at the time of curing and can increase the curing speed. Examples of the photopolymerization accelerator include one or more selected from isoamyl p-dimethylaminobenzoate, ethyl p-dimethylaminobenzoate, and the like.

The resin pattern layer 4 may be colorless and transparent, but may be colored and transparent as necessary. When coloring the resin pattern layer 4, a coloring agent (pigment or dye) can be added to the composition for forming the resin pattern layer to be colored. As the colorant, a known or commercially available pigment or dye can be appropriately used. One type of colorant may be used alone, or two or more types may be used in combination. Further, the amount of the colorant to be added can be appropriately set according to a desired color or the like.

In the resin pattern layer 4, if necessary, a filler, a matting agent, a foaming agent, a flame retardant, a lubricant, an antistatic agent, an antioxidant, an ultraviolet absorber, a light stabilizer, a radical scavenger, a soft component ( 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 in the resin pattern layer 4 improve surface physical properties such as imparting a tactile sensation, controlling gloss, 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 alone or in combination of two or more.

The specular gloss at 60 degrees in JIS Z8741: 1997 is preferably the highest value on the surface of the resin pattern layer 4 on one surface side of the substrate 1. Since the specular glossiness at 60 degrees in JIS Z8741: 1997 on the surface of the resin pattern layer 4 is the highest value on one surface side of the substrate 1, the difference in gloss from the surrounding area (wood texture pattern layer 2) is obtained. Can be generated to improve the visual sense of unevenness.
In order to make the specular gloss of the surface of the resin pattern layer 4 the highest value 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 refraction of the particles 6. It is preferable that the relationship of the ratio n satisfies the following expression (1).
| N ₀ -n | ≦ 0.14 (1)
By satisfying the expression (1), the gloss control by the resin pattern layer 4 and the particles 6 can be easily performed. Formula (1) is more preferably 0.10 or less, further preferably 0.05 or less, and still 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 due to tactile sensation and gloss difference. It is more preferred that there be.
The average particle diameter of the particles 6 in the present invention is determined by using a Shimadzu laser diffraction particle size distribution analyzer “SALD-2100-WJA1”, injecting powder to be measured from a nozzle using compressed air, It is the average of the values measured by the spray-type dry measurement method, which is dispersed in air and measured.

The amount of the particles 6 is preferably 50 parts by mass or less, and more preferably 45 parts by mass, based on 100 parts by mass of the resin for forming a resin pattern layer, from the viewpoint of improving the effect due to the difference in gloss, three-dimensional moldability, and design. Parts by weight or less, more preferably 40 parts by weight or less. In addition, even if the particle 6 has a very small amount (for example, one particle), a predetermined tactile sensation can be provided as long as there is contact with a finger or the like. However, in order to ensure that a desired tactile sensation can be exhibited no matter where the resin pattern layer 4 of the decorative material is touched, 0.5 parts by mass or more, preferably 100 parts by mass of the resin for forming the resin pattern layer, preferably It is preferable that the content be 1 part by mass or more.

When the particles 6 are contained, the thickness of the resin pattern layer 4 is preferably 50% or more and 300% or less, more preferably 60% or more and 250% or less of the average particle diameter of the particles 6 from the viewpoint of retaining the particles 6. It is more preferable that the thickness is not less than 75% and not more than 200%. When the particles 6 are not contained, the thickness of the resin pattern layer 4 is 1 from the viewpoint of imparting a tactile sensation for reproducing a feeling of wood texture and the like. The thickness is preferably from 0.0 μm to 10.0 μm, more preferably from 2.0 μm to 8.0 μm, even more preferably from 3.0 μm to 6.0 μm.

[Other configurations]
The woodgraining decorative material preferably further includes a backing substrate (not shown) on the side opposite to the side on which the wood pattern layer 2, the conduit pattern layer 3, and the resin pattern layer 4 are provided. The backing base material is provided as necessary to reinforce the woodgraining decorative material, to provide adhesion to an adherend, or to provide concealment.

樹脂 As the backing substrate, a resin sheet, paper, nonwoven fabric, woven fabric, metal foil, or the like can be used. Among them, as the resin sheet, an acrylic resin, a polyester resin, a polyolefin resin, an ABS resin or the like in a sheet shape 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 still more preferably 2.5 mm or more and 30 mm or less, from the viewpoint of improving reinforcing properties, adhesiveness, and concealment properties. .

The woodgraining decorative material has an adhesive layer (not shown) provided between at least one of the substrate 1, the wood pattern layer 2, the conduit pattern layer 3, the resin pattern layer 4, the matting layer 5, and the backing substrate. Preferably. The adhesive layer has a function of assisting the bonding of each of the substrate 1, the wood pattern layer 2, the conduit pattern layer 3, the resin pattern layer 4, the matting layer 5, and the backing substrate, and makes the bonding of each layer firm. can do.
The adhesive layer is preferably at least one selected from a two-component curable resin, a thermoplastic resin, a thermosetting resin, and an ionizing radiation-curable resin.

In addition, the woodgrain-like decorative material has a primer layer (not shown) between at least one of the substrate 1, the wood pattern layer 2, the conduit pattern layer 3, the resin pattern layer 4, the matte layer 5, and the backing substrate. Preferably, it is provided. The primer layer has a function of assisting the bonding of each layer of the substrate 1, the wood pattern layer 2, the conduit pattern layer 3, the resin pattern layer 4, the matting layer 5, and the backing substrate, and strengthens the bonding of each layer. be able to.
As the primer layer, a resin capable of improving the adhesion between the two layers facing each other with the primer layer interposed therebetween may be appropriately selected, and there is no particular limitation.

According to the woodgrain-like decorative material according to the embodiment of the present invention, it is possible to provide a decorative material having a design property close to that of real wood by a visual effect and a tactile sensation.

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

[Measurement and evaluation]
The following measurements and evaluations were performed on the transfer sheets produced in the examples and comparative examples. Table 1 shows the results.

<Design>
A design check was performed on the surfaces of the woodgrain decorative materials produced in the examples and comparative examples. Twenty subjects were given two points for those who felt design characteristics very close to real wood, one point for those who felt design characteristics close to real wood, and 0 points for those who hardly felt design characteristics close to real wood. 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. Twenty test subjects rated 2 points for those who felt unevenness very close to real wood, 1 point for those who felt unevenness close to real wood, and 0 points for those that hardly felt unevenness close to real wood. The average score was calculated.
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 Stuff

[Example 1]
As a base material 1, a colored thin paper base paper for a building material having a basis weight of 30 g / m ² is prepared, and on one side thereof, a wood-pattern layer is formed using an acrylic resin and a nitrified cotton as a binder, and titanium white, a red stalk, and graphite as a coloring agent. Using a printing ink, a solid layer having a coating amount of 5 g / m ² was applied by gravure printing to obtain a wood texture layer 2.
Next, the conduit pattern layer 3 which is a conduit pattern is gravure-printed on the wood pattern layer 2 by using a conduit pattern layer forming ink containing a coloring agent mainly composed of a petiole using nitrified cotton as a binder. Formed. The shape of the end of the conduit pattern was narrowed and rounded.
Next, a matting layer 5 is formed by gravure printing on the entire surface of the wood pattern layer 2 and the conduit pattern layer 3 using an ink for forming a matting layer containing silica as a matting agent in a two-component curable polyurethane resin. did. The thickness of the matte layer 5 was 5 μm from the surface of the wood pattern layer 2.
Next, a resin pattern layer 4 was formed on the mat layer 5 by gravure printing using a resin pattern layer forming ink containing a two-part curable polyurethane resin containing silica having an average particle diameter of 3 μm as a matting agent. . At this time, the pattern plate used in the gravure printing is such that the wood pattern layer 2 is present between the resin pattern layer 4 and the pipe pattern layer 3 in plan view, and the wood pattern pattern layer 2 and the pipe pattern layer are provided. In this pattern, the ratio (area ratio) of the area occupied by the wood texture layer 2 to the ratio of the area occupied by 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 the woodgrain-like decorative material in Example 1.
The resulting woodgrain decorative material was evaluated for design and tactile sensation. Table 1 shows the results.

[Example 2]
The ratio (area ratio) of the area occupied by the wood pattern layer 2 to the area occupied by the wood pattern layer 2 and the conduit pattern layer 3 in the pattern plate when the resin pattern layer 4 is formed by gravure printing 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 woodgrain decorative material was evaluated for design and tactile sensation. Table 1 shows the results.

[Example 3]
The ratio (area ratio) of the area occupied by the wood pattern layer 2 to the area occupied by the wood pattern layer 2 and the conduit pattern layer 3 in the pattern plate when the resin pattern layer 4 is formed by gravure printing 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 woodgrain decorative material was evaluated for design and tactile sensation. Table 1 shows the results.

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

[Comparative Example 1]
The ratio (area ratio) of the area occupied by the wood pattern layer 2 to the area occupied by the wood pattern layer 2 and the conduit pattern layer 3 in the pattern plate when the resin pattern layer 4 is formed by gravure printing 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 woodgrain decorative material was evaluated for design and tactile sensation. Table 1 shows the results.

The woodgrain-like decorative materials in Examples 1 to 4 had the highest specular glossiness at 60 degrees in JIS Z8741: 1997 of the surface of the resin pattern layer on one surface side of the base material. Since the specular gloss at 60 degrees in JIS Z8741: 1997 on the surface of the resin pattern layer is the highest value on one surface side of the base material, a difference in gloss from the surrounding area (wood texture pattern layer) is generated. This gave a sense of visual irregularities, and had a design property close to that of real wood.
The woodgrain decorative material in Comparative Example 1 had the highest specular glossiness at 60 degrees in JIS Z8741: 1997 on the surface of the resin pattern layer on one surface side of the base material, but the woodgrain pattern layer 2 did not. Since the ratio of the occupied area (area ratio) was 0%, a sufficient uneven feeling was not obtained.

The woodgrain decorative material of the present invention has a design property close to that of real wood due to its visual effect and tactile sensation, and includes members for interior and exterior of buildings such as walls, ceilings, floors, window frames, doors, handrails, and widths. In addition to fittings such as wood, surroundings, malls, etc., it is suitably used as a layer constituting a surface decorative board of a kitchen, furniture or a cabinet for light electric appliances, OA equipment, etc., or a member for interior and exterior of a vehicle.

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

Claims

A substrate,
A resin pattern layer provided on a part of one surface side of the base material,
With a wood pattern layer and a conduit pattern layer provided on the remaining portion on one side of the base material,
A woodgrain-like decorative material, wherein a ratio of an area occupied by the woodgrain pattern layer to a ratio of an area occupied by the woodgrain pattern layer and the conduit pattern layer is 1% or more and 99% or less.
2. The woodgrain decorative material according to claim 1, wherein, in plan view, the woodgrain pattern layer exists between the resin pattern layer and the conduit pattern layer.
The woodgrain-like decorative material according to claim 1 or 2, wherein a matte layer is provided on the conduit pattern layer.
The woodgrain-like decorative material according to any one of claims 1 to 3, wherein the end portion shape of the conduit pattern layer is narrowed and rounded.
の木 The woodgrain decorative material according to any one of claims 1 to 4, wherein the resin pattern layer contains particles.
The woodgrain-like decorative material according to claim 5, wherein the average particle size of the particles is 10 µm or more and 40 µm or less.
The woodgrain according to any one of claims 1 to 6, wherein the surface of the resin pattern layer has the highest specular glossiness at 60 degrees in JIS Z8741: 1997 on one surface side of the base material. Cosmetic materials.