JP7354531B2 - Decorative material - Google Patents

Description

The present invention relates to decorative materials.

Decorative materials are used on the surfaces of building materials, furniture, electrical appliances, vehicle interior materials, etc. to give them a decorative appearance. In order to enhance the design of decorative materials, printed patterns such as wood grain patterns, stone grain patterns, cloth grain patterns, leather grain patterns, geometric patterns, and abstract patterns may be applied to decorative materials. In order to further enhance the design of decorative materials, it has been proposed to provide a printed pattern with a thick film to give the decorative material an uneven appearance and feel (see, for example, Patent Document 1 and Patent Document 2).
In the decorative materials proposed in Patent Document 1 and Patent Document 2, the printed pattern is formed by so-called embossing printing, so the thickness of the printed pattern is the same, and the visual effect and tactile sensation of the printed pattern are different. It was monotonous.

Special Publication No. 63-17613 Patent No. 5339097

In recent years, with the increasing preference for luxury products among consumers and various needs, more complex designs have been required, and it has become necessary to meet more stringent requirements.
However, the decorative material proposed in Patent Document 1 has a monotonous visual effect and a monotonous feel, and cannot be said to have a design that meets high demands.

In view of the above problems, the present invention aims to provide a decorative material that has a complex and sophisticated design due to its visual effects and tactile sensation.

In order to solve the above problems, the present inventors conducted extensive research and found that the above problems could be solved by making the pattern ink layer provided on one side of the base material specific. That is, the present invention provides the following [1] to [9].
[1] A base material, and a pattern ink layer constituted by a plurality of ink parts on one side of the base material, the pattern ink layer having at least one of the following first configuration and second configuration. A decorative material that has a structure and expresses a pattern depending on the structure.
First configuration: A configuration in which a plurality of the ink portions have different thicknesses Second configuration: A configuration in which the thickness of the ink portions varies with a continuous function [2] In the first configuration, the ink portions have different thicknesses. The decorative material according to [1], comprising a first ink part and a second ink part, wherein the first ink part is thicker than the second ink part.
[3] The decorative material according to [2], wherein particles are present in the first ink portion and particles are not present in the second ink portion.
[4] The decorative material according to [3], wherein the first ink portion has a thickness greater than the average particle diameter of the particles.
[5] The patterned ink layer has a first ink part assembly constituted by a plurality of the first ink parts and a second ink part assembly constituted by a plurality of the second ink parts. Decorative material according to any of items [2] to [4].
[6] The decorative material according to any one of [2] to [5], wherein the pattern is a wood grain pattern having an annual ring part, and the first ink part constitutes an autumn wood part in the annual ring part.
[7] The decorative material according to [1], wherein in the second configuration, the ink portion contains particles and has a first ink region where the particles are present and a second ink region where the particles are not present.
[8] The decorative material according to [7], wherein the thickness of the first ink region is greater than the average particle diameter of the particles.
[9] The decorative material according to any one of [1] to [8], comprising a picture pattern layer between the base material and the pattern ink layer.

According to the present invention, it is possible to provide a decorative material that has a complex and sophisticated design due to its visual effects and tactile sensation.

FIG. 1(a) is a schematic perspective view showing a first configuration of a decorative material according to an embodiment of the present invention, and FIG. 1(b) is a schematic perspective view showing a second configuration of a decorative material according to an embodiment of the present invention. FIG. 2 is a schematic perspective view showing the configuration. FIG. 1 is a schematic cross-sectional view showing a first configuration of a decorative material according to an embodiment of the present invention. FIG. 3(a) is a schematic perspective view showing the first ink part assembly and the second ink part assembly in the first configuration of the decorative material according to the embodiment of the invention, and FIG. 3(b) is a FIG. 2 is a schematic cross-sectional view showing a first ink part assembly and a second ink part assembly in a first configuration of a decorative material according to an embodiment of the invention. In the decorative material according to an embodiment of the invention, FIG. It is a typical sectional view showing the 2nd composition of the decorative material concerning an embodiment of the present invention. FIG. 1 is a schematic cross-sectional view showing a first configuration of a decorative material according to an example of the present invention. It is a typical sectional view showing the 2nd composition of the decorative material concerning the example of the present invention. FIG. 3 is a schematic cross-sectional view showing a decorative material according to a comparative example of the present invention.

Embodiments of the present invention will be described below with reference to the drawings. In the description of the drawings below, the same or similar parts are represented by the same or similar symbols. However, the drawings are schematic, and the presence or absence of a difference in thickness between the first ink part and the second ink part in the first configuration, and the presence or absence of a difference in thickness within the ink part in the second configuration are not accurate. However, quantitative relationships such as the relationship between thickness and planar dimension and the ratio of thickness of each layer may differ from the actual one. Therefore, the specific thickness and dimensions should be determined in reference to the following description. Furthermore, it goes without saying that the drawings include portions with different dimensional relationships and ratios.

(Embodiment)
As shown in FIG. 1, the decorative material 10 according to the embodiment of the present invention includes a base material 1 and patterned ink layers 2a and 2b formed of a plurality of ink parts on one side of the base material 1. Be prepared. The pattern ink layers 2a, 2b have at least one of a first configuration and a second configuration. The first configuration has a plurality of ink portions 2a ₁ and 2a ₂ having different thicknesses, as shown in FIG. 1(a). In the second configuration, as shown in FIG. 1(b), the thickness of the pattern ink layer (ink portion) 2b is a continuous function.
When the decorative material 10 is intended to express the appearance of a wood grain pattern, the wood used to reproduce the design with the decorative material is not particularly limited, but examples include cedar, cypress, walnut, pine, and cherry.

[Base material]
The form of the base material 1 may be either a flat plate or a curved plate.
The base material 1 is not particularly limited as long as it is normally used as a decorative material, and resin base materials, metal base materials, ceramic base materials, fibrous base materials, wood base materials, etc. may be used depending on the purpose. It can be selected as appropriate. Each of the above base materials may be used alone, but for example, a laminate made of any combination such as 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. Good too. When the base material 1 is a laminate, it may be configured such that a primer layer is further provided between each layer of the laminate.

Examples of the resin base material used as the base material 1 include those made of various synthetic resins. Examples of synthetic resins include polyolefin resins such as polyethylene, polypropylene, polymethylpentene, ionomers, various polyolefin thermoplastic elastomers, vinyl chloride resins such as polyvinyl chloride, polyvinylidene chloride, vinyl chloride-vinyl acetate copolymer, and polyethylene terephthalate. , polybutylene terephthalate, polyethylene naphthalate, ethylene glycol-terephthalic acid-isophthalic acid copolymer, polyester resins such as polyester thermoplastic elastomers, polymethyl acrylate, poly(meth)ethyl acrylate, poly(meth)ethyl acrylate, ) Acrylic resins such as butyl acrylate, methyl (meth)acrylate-butyl (meth)acrylate copolymer, polyamide resins such as nylon 6 or nylon 66, cellulose such as cellulose triacetate, cellophane, and celluloid. Resin, polystyrene, styrene resin such as acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer (ABS), polyvinyl alcohol, ethylene-vinyl acetate copolymerization, ethylene-vinyl alcohol copolymerization, polycarbonate resin, polyarylate Examples include resins and polyimide resins.
In addition, in the present specification, "(meth)acrylic acid", "(meth)acrylate", and "(meth)acryloyl group" refer to "acrylic acid or methacrylic acid", "acrylate or methacrylate", and It means "acryloyl group or methacryloyl group".

Examples of the metal base material used as the base material 1 include aluminum or an alloy containing aluminum such as duralumin, iron or carbon steel, an alloy containing iron such as stainless steel, copper or an alloy containing copper such as brass or bronze, Examples include those made of titanium or the like. Further, as the base material 1, materials coated with these metals by plating or the like can also be used.

Ceramic base materials used as the base material 1 include, for example, non-ceramic ceramic materials such as cement, ALC (lightweight cellular concrete), gypsum, calcium silicate, and wood chip cement, and ceramics such as ceramics, earthenware, glass, and enamel. Examples include those made of ceramic-based materials.

As the fibrous base material used as the base material 1, for example, paper base materials such as tissue paper, kraft paper, titanium paper, linter paper, paperboard, and base paper for gypsum board can be used. These paper base materials are made of acrylic resin, styrene-butadiene rubber, melamine resin, etc., in order to increase the strength between the fibers of the paper base material or between other layers and the paper base material, and to prevent fluff. It may also be one in which a resin such as urethane resin is added (resin impregnated after papermaking, or internally filled during papermaking). Examples of the paper base material to which resin is added include interpaper reinforced paper, resin-impregnated paper, and the like.
Examples of the fibrous base material used as the base material 1 include raw vinyl wallpaper, which is a paper base material with a vinyl chloride resin layer provided on the surface, which is often used in the field of building materials.
In addition, 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, which are used in the office field or for ordinary printing and packaging. Can be mentioned.
In addition, the fibrous base material used as the base material 1 may be distinguished from the above-mentioned paper base material, but may also include woven fabrics and non-woven fabrics of various fibers that have an appearance and properties similar to paper. Examples of the various fibers include protein-based or cellulose-based natural fibers such as silk, cotton, and hemp, and inorganic fibers such as glass fibers, asbestos fibers, potassium titanate fibers, alumina fibers, silica fibers, and carbon fibers. Further, various types of 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 of various woods such as cedar, cypress, pine, zelkova, oak, oak, lauan, and teak, plywood, laminated wood, particle board, and medium-density fibers. Examples include a board (MDF).

The thickness of the base material 1 is not particularly limited, but from the viewpoints of mechanical strength, ease of handling, and economic efficiency, it is preferably 0.5 mm or more and 100 mm or less, and more preferably 1.0 mm or more and 50 mm or less. It is preferably 2.5 mm or more and 30 mm or less.

The base material 1 is coated on one or both sides with an oxidation method or a roughening method in order to improve the adhesion with other layers constituting the decorative material or to strengthen the adhesion with the adherend. Surface treatments such as physical surface treatments such as or chemical surface treatments can be performed.
Examples of the oxidation method include corona discharge treatment, chromium oxidation treatment, flame treatment, hot air treatment, ozone-ultraviolet treatment, etc., and examples of the roughening method include sandblasting, solvent treatment, etc. These surface treatments are appropriately selected depending on the type of the base material 1, but in general, a corona discharge treatment method is preferably used in terms of surface treatment effects and operability.
Additionally, a primer layer may be further provided on the surface of the base material 1 in order to improve interlayer adhesion between the base material 1 and other layers, strengthen adhesion to adherends, etc. .

[Pattern ink layer]
The pattern ink layers 2a and 2b are provided as desired in order to enhance the design and decoration of the decorative board of the present invention. The pattern formed by the pattern ink layers 2a and 2b has a thickness T (T ₁ , T ₂ , . . . ) that can be visually recognized in at least a partial region, and an uneven shape can be visually recognized. be taken as a thing. For example, wood grain patterns on the surface of so-called floating wood boards with raised autumn wood parts of annual rings, wood boards with conduit grooves, clapboard-like wood boards with joint grooves, uneven structures on the surface of stone boards such as cleavage surfaces of granite boards, etc. Stone pattern including texture, cloth pattern including structure woven with fibers or threads, leather pattern (also called skin grain pattern), tiling pattern including grooves, bricklaying pattern including grooves, sand pattern, satin finish Patterns, so-called line-shaped uneven patterns (also called ray carving patterns) in which a plurality of concave and convex portions are arranged with their extending directions parallel to each other, geometric patterns, letters, figures, and regular patterns. , abstract patterns, etc., and there are also patterns that combine these, such as marquetry and patchwork.

The pattern ink layers 2a and 2b are preferably at least one selected from two-component hardening resins, thermoplastic resins, thermosetting resins, and ionizing radiation hardening resins.

Two-component curable resins include two-component urethane resins containing a polyol compound as a main ingredient and an isocyanate compound as a curing agent, two-component epoxy resins, two-component urethane-modified acrylic resins, and two-component polyester resins. Can be mentioned.

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

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

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 ethylenically unsaturated bond groups such as (meth)acryloyl group, vinyl group, and allyl group, as well as epoxy group and oxetanyl group.
The ionizing radiation-curable resin is preferably a compound having an ethylenically unsaturated bond group. In addition, from the viewpoint of suppressing damage to the resin layer in the process of manufacturing decorative sheets, compounds having two or more ethylenically unsaturated bond groups are more preferable as ionizing radiation-cured resins, and among them, compounds having two or more ethylenically unsaturated bond groups are more preferable. More preferred are polyfunctional (meth)acrylate compounds having two or more bonding groups. As the polyfunctional (meth)acrylate compound, both monomers and oligomers can be used.
Note that ionizing radiation refers to electromagnetic waves or charged particle beams that have energy quantum that can polymerize or crosslink molecules, and ultraviolet rays (UV) or electron beams (EB) are usually used, but other 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, examples of bifunctional (meth)acrylate monomers include ethylene glycol di(meth)acrylate, bisphenol A tetraethoxy diacrylate, bisphenol A tetrapropoxy diacrylate, and 1,6-hexane. Examples include diol diacrylate.
Examples of trifunctional or higher-functional (meth)acrylate monomers include trimethylolpropane tri(meth)acrylate, pentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, dipentaerythritol hexa(meth)acrylate, and dipentaerythritol hexa(meth)acrylate. Examples include pentaerythritol tetra(meth)acrylate, isocyanuric acid-modified tri(meth)acrylate, and the like.
Furthermore, the above (meth)acrylate monomers may have a part of their molecular skeleton modified, such as ethylene oxide, propylene oxide, caprolactone, isocyanuric acid, alkyl, cyclic alkyl, aromatic, bisphenol, etc. 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)acrylates are obtained, for example, by reacting polyhydric alcohols and organic diisocyanates with hydroxy (meth)acrylates.
In addition, preferred epoxy (meth)acrylates include (meth)acrylates obtained by reacting trifunctional or higher functional aromatic epoxy resins, alicyclic epoxy resins, aliphatic epoxy resins, etc. with (meth)acrylic acid; (meth)acrylate 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 difunctional or more aromatic epoxy resin, It is a (meth)acrylate obtained by reacting an alicyclic epoxy resin, an aliphatic epoxy resin, etc., a phenol, and (meth)acrylic acid.
The above-mentioned 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, for example, in the case of a compound having an ethylenically unsaturated group, acetophenone, benzophenone, α-hydroxyalkylphenone, Michler's ketone, benzoin, benzyl dimethyl ketal, benzoyl benzoate, α-acyl oxime ester, thioxanthone One or more types selected from the following are mentioned.
The photopolymerization accelerator can reduce polymerization inhibition caused by air during curing and can speed up 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 pattern ink layers 2a and 2b may be transparent, but may be colored as necessary. When the pattern ink layers 2a and 2b are colored, a coloring agent (pigment or dye) can be added to the resin pattern layer forming composition. As the colorant, known or commercially available pigments or dyes can be used as appropriate. One type of colorant may be used alone, or two or more types may be used in combination. Further, the amount of the coloring agent added can also be appropriately set depending on the desired color tone and the like.

The pattern ink layers 2a and 2b contain 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, and a soft material as necessary. Various additives such as components (eg, rubber) may be included.

<First configuration>
As shown in FIG. 1(a), the first configuration as the pattern ink layer 2a includes at least two ink parts having mutually different thicknesses, that is, a first ink part 2a ₁ and a second ink part 2a ₂ . The thickness T of the first ink part 2a ₁ and the second ink part 2a ₂ is such that within the same ink part, the thickness changes depending on the location in the in-plane direction of the decorative material 10, visually and tactilely. , uniform to an indistinguishable degree. Specifically, in the first ink part 2a ₁ and the second ink part 2a ₂ forming the same pattern ink layer 2a, the range of thickness distribution is preferably 3 μm or less, more preferably 2 μm or less. The thickness is preferably 1 μm or less, and more preferably 1 μm or less. The thickness distribution range is the thickness measured at three or more different locations, preferably five or more locations, in the first ink section 2a ₁ and the second ink section 2a ₂ that form the same pattern ink layer 2a. is evaluated using four times the standard deviation σ (4σ). The thickness T ₁ of the first ink portion 2a ₁ is thicker than the thickness T ₂ of the second ink portion 2a ₂ , that is, T ₁ >T ₂ . By having the first ink portion 2a ₁ and the second ink portion 2a ₂ having different thicknesses, the visual effect and tactile sensation at each location are different, and a more complex and sophisticated design can be obtained. Here, the difference in thickness T 1 - _{T 2 between} the thickness T ₁ of the first ink part 2a ₁ and the thickness T ₂ of the second ink part 2a ₂ is visually and tactilely determined. It is necessary to make it possible, and it is preferable that T ₁ -T ₂ ≧3 μm.
Note that the "in-plane direction of the decorative material 10" is the direction in which the decorative material surface of the decorative material 10 spreads. The decorative material surface is a virtual plane obtained by smoothing the uneven pattern on the pattern ink layer 2a, 2b side surface of the decorative material 10, and a virtual plane that extends in a direction intersecting the line of sight of the viewer of the decorative material. In FIG. 1, the XY plane and a virtual plane parallel to this are decorative material surfaces. When the base material 1 of the decorative material 10 has a rectangular parallelepiped shape, the actual surface of the base material 1 on the pattern ink layer 2a, 2b side or the opposite surface is the decorative material surface (one of the surfaces). ).

In the pattern ink layer 2a, as shown in FIG. 2, it is preferable that particles 3 exist in the first ink section _2a1 and particles ₃ do not exist in the second ink section 2a2. The presence of particles 3 in the first ink part 2a ₁ makes it easier to control the thickness T ₁ of the first ink part 2a ₁ and gives a tactile feel, and the thickness T ₂ of the second ink part 2a ₂ and In comparison, the first ink portion _2a1 which is thicker can be formed with good reproducibility. Since particles 3 are not present in the second ink portion _{2a 2} , the second ink portion 2a ₂ can be easily formed to be thinner than the thickness T ₁ of the first ink portion 2a 1.
1A and 2, the pattern ink layer 2a is composed of two types of ink portions having different thicknesses, that is, a first ink portion 2a ₁ and a second ink portion 2a ₂ . , the present invention is not limited to this, and in general, the pattern ink layer 2a has N types of ink portions having different thicknesses, that is, the first ink portion 2a ₁ , the second ink portion 2a ₂ , . . . Any form may be used as long as it consists of the first ink portion 2a _N-1 and the Nth ink portion 2a _N (N≧3 is omitted from illustration).
Here, N is a natural number of 2 or more (1, 2, 3, ..., N-1, N), and the thickness T ₁ , T ₂ , ..., T _N of each ink part is T ₁ > T ₂ >...> T _N-1 > T _N , and T _i-1 - T _i ≧3 μm (i is a natural number of 1 or more and N or less, and N is a natural number of 2 or more).

The amount of particles 3 added to the pattern ink layer forming ink for forming the first ink part 2a ₁ is determined from the viewpoint of forming the first ink part 2a ₁ with good reproducibility and giving it a tactile feel. It is preferably 5 parts by mass or more and 60 parts by mass or less, more preferably 5 parts by mass or more and 50 parts by mass or less, and 10 parts by mass or more and 40 parts by mass or less, based on 100 parts by mass of the ink layer forming resin. It is even more preferable that there be.
The particles 3 are made of resins such as acrylic resin, urethane resin, silicone resin, and polyamide resin such as nylon, or inorganic materials such as silica, alumina, zirconia, titania (titanium dioxide), kaolinite, calcium carbonate, and barium sulfate. There are many beads that can be used. As the particles 3, one of the above particles may be used alone, or two or more types may be used in combination.

The thickness T ₁ of the first ink portion 2 a ₁ is preferably thicker than the average particle diameter of the particles 3 . Since the thickness T ₁ of the first ink part 2a ₁ is thicker than the average particle diameter of the particles 3, the particles 3 are included in the first ink part 2a ₁ , and the particles 3 become the skeleton of the first ink part 2a ₁ . Therefore, it becomes easy to control the thickness T ₁ of the first ink portion 2a ₁ .
The thickness T ₁ of the first ink portion 2a ₁ is preferably 5 μm or more and 50 μm or less, more preferably 10 μm or more and 45 μm or less, and even more preferably 20 μm or more and 40 μm or less, from the viewpoint of achieving good visual effects and tactile sensations due to the pattern.
The average particle diameter of the particles 3 is preferably 5 μm or more and 50 μm or less, more preferably 5 μm or more and 35 μm or less, and 10 μm or more, from the viewpoint of forming the first ink portion 2a ₁ in the desired shape with good reproducibility. More preferably, it is 30 μm or less. Further, the average particle diameter of the particles 3 is preferably 1/2 or less of the plate depth from the viewpoint of ink transfer stability.
The average particle size of the particles 3 in the present invention is determined using a laser diffraction particle size distribution analyzer "SALD-2100-WJA1" manufactured by Shimadzu Corporation, and the powder to be measured is measured from a nozzle using compressed air. This is the average value measured using a spray-type dry measurement method in which the body is sprayed and dispersed in the air.

As shown in FIG. 3, the pattern ink layer 2a includes _a first ink part assembly _2A1 made up of a plurality of first ink parts 2a1, and a second ink part assembly _2A1 made up of a plurality of second ink parts 2a2. It is preferable to have a partial assembly _2A2 . By having the first ink part assembly 2A ₁ and the second ink part assembly 2A ₂ , it is possible to obtain the respective visual effects and tactile sensations of the first ink part assembly 2A ₁ and the second ink part assembly 2A _2. I can do it. Moreover, by having the first ink part assembly 2A ₁ and the second ink part assembly 2A ₂ , the visual effect and the effect as an aggregate of the first ink part assembly 2A ₁ and the second ink part assembly 2A ₂ are It is possible to obtain complex and sophisticated designs due to differences in tactility.
Although not shown, the pattern ink layer 2a includes three or more types of ink parts having different thicknesses, namely, a first ink part 2a ₁ , a second ink part 2a ₂ , . . . , an N-1th ink part 2a _N-1 , and the Nth ink part 2a _N (N is a natural number of N≧3), each i-th ink part 2a _i (i is a natural number of 2≦i≦N, N≧3) also has a plurality of It is preferable that the i-th ink portions 2a _i are assembled to constitute the i-th ink portion aggregate 2A _i .

When the pattern of the decorative material is a wood grain pattern having tree rings, the first ink part assembly 2A ₁ constituted by the first ink part 2a ₁ is configured to satisfactorily reproduce the design appearance and feel of the wood grain pattern. As shown in FIG. 4, there is a form in which the autumn wood (late wood) part is formed in the annual ring part. At this time, it is preferable that the second ink part assembly 2A ₂ constituted by the second ink part 2a ₂ constitutes a spring wood (early wood) part in the annual ring part.
In addition, as another form that satisfactorily reproduces the design appearance and feel of a wood grain pattern, in a wood grain pattern in which the pattern of the decorative material has knot holes, the first ink part aggregate 2A ₁ constituted by the first ink part 2a ₁ is Examples include forms that have knotholes. At this time, it is preferable that the second ink part assembly 2A ₂ constituted by the second ink part 2a ₂ constitutes a part other than the knot holes in the wood grain pattern, for example, a spring wood (early wood) part.
With this configuration, the wood grain decorative material can provide visual and tactile effects that are close to those of real wood.

<Second configuration>
As shown in FIG. 1(b), the second configuration as the pattern ink layer (ink portion) 2b is located along at least one direction Y=mX+n within the XY plane that forms the decorative material surface of the decorative material 10. The structure is such that when (X, Y) is changed, the thickness of the pattern ink layer (ink portion) 2b changes to become a continuous function T (X, Y) of the position (X, Y). Here, m and n are arbitrary constants. In particular, in the case of FIG. 1(b), the thickness T of the pattern ink layer 2b changes with a continuous function along the Y=m direction in the decorative surface of the decorative material 10, that is, the direction parallel to the X axis. , in particular, the thickness T increases monotonically toward the +X direction.
Note that the continuous function here is not limited to one that strictly matches the mathematical definition of a continuous function. It also includes cases where the thickness change T(X, Y) is recognized as continuously changing by visual sense, tactile sense, or both, although it is discontinuous according to a strict mathematical definition.
The change in the thickness of the pattern ink layer (ink portion) 2b as a continuous function may be a monotonous change or may be a variety of changes. Further, the inclination directions of the mutually adjacent pattern ink layers (ink portions) 2b may be in the same direction or may be incline in different directions. Since the pattern ink layer (ink portion) 2b has various shapes, the visual effect and tactile sensation at each location are different, and a more complex and sophisticated design can be obtained.

It is preferable that the pattern ink layer (ink part) 2b contains particles 3. As shown in FIG. 5, the pattern ink layer (ink portion) 2b has a first ink region _R1 where particles 3 are present and a second ink region _R2 where no particles 3 are present. The thickness T ₁ of the first ink region R ₁ where the particles 3 are present is thicker than the thickness T ₂ of the second ink region R ₂ where the particles 3 are not present. That is, T ₁ >T ₂ . The thickness T 1 of the first ink region R ₁ can be easily controlled by including the particles 3 in the first ink region R ₁ and making the particles ₃ a skeleton of the first ink region R ₁ . By having the first ink region _R1 and the second ink region _R2 having different thicknesses, it is possible to obtain a complex and sophisticated design with visual effects and tactile sensations.
As the particles 3, particles similar to those used in the first configuration described above can be used.

The amount of particles 3 added to the pattern ink layer forming ink for forming the pattern ink layer (ink part) 2b is as follows: the particles 3 are dispersed in the first ink region _R1 , and the pattern ink layer (ink part) 2b is mixed with the particles 3 in the pattern ink layer forming ink. From the viewpoint of forming with good reproducibility, it is preferably 5 parts by mass or more and 60 parts by mass or less, more preferably 5 parts by mass or more and 50 parts by mass or less, based on 100 parts by mass of the pattern ink layer forming resin. It is more preferably 10 parts by mass or more and 40 parts by mass or less.
The particles 3 are made of resins such as acrylic resin, urethane resin, silicone resin, and polyamide resin such as nylon, or inorganic materials such as silica, alumina, zirconia, titania (titanium dioxide), kaolinite, calcium carbonate, and barium sulfate. There are many beads that can be used. As the particles 3, one of the above particles may be used alone, or two or more types may be used in combination.

The thickness T ₁ of the first ink region R ₁ is preferably thicker than the average particle diameter of the particles 3 . Since the thickness T ₁ of the first ink region R ₁ is thicker than the average particle diameter of the particles 3, the particles 3 are included in the first ink region R ₁ and the thickness T ₁ of the first ink region R ₁ is controlled. It becomes easier.
The thickness T ₁ of the first ink region R ₁ is preferably 5 μm or more and 50 μm or less, more preferably 10 μm or more and 45 μm or less, and even more preferably 20 μm or more and 40 μm or less, from the viewpoint of achieving good visual effects and tactile sensations due to the pattern.
The average particle diameter of the particles 3 is preferably 5 μm or more and 50 μm or less, more preferably 5 μm or more and 35 μm or less, and 10 μm or more, from the viewpoint of forming the first ink region R ₁ in the desired shape with good reproducibility. More preferably, it is 30 μm or less. Further, the average particle diameter of the particles 3 is preferably 1/2 or less of the plate depth from the viewpoint of ink transfer stability.

[Other configurations]
<Picture pattern layer>
It is preferable that the decorative material of the present invention further includes a picture pattern layer (not shown) between the base material 1 and the pattern ink layers 2a and 2b. The pattern layer can impart design to the decorative material. Patterns formed by the pattern layer include wood grain patterns, stone grain patterns (cleaved surfaces of granite, etc.), cloth grain patterns, leather grain patterns, tiling patterns (including grout grooves), and brickwork patterns (including grout grooves). , sand grain patterns, satin patterns, ray carving patterns, geometric patterns, letters, figures, regular patterns, abstract patterns, etc., and there are also patterns such as marquetry and patchwork that combine these patterns. These patterns are formed by multicolor printing using normal process colors such as yellow, red, blue, and black, but also by multicolor printing using special colors by preparing plates for the individual colors that make up the pattern. be done.

The pattern layer is made by appropriately arranging coloring agents such as pigments and dyes so as to obtain the desired design. The pattern layer is formed by printing methods such as offset printing, flexo printing, gravure printing, screen printing, spray printing, and inkjet printing, and by a transfer method of transferring a printed pattern. The pattern layer may be a single layer, or may be formed from two or more layers.

The ink used to form the picture pattern layer is a mixture of a binder resin, a pigment, a coloring agent such as a dye, an extender pigment, a solvent, a stabilizer, a plasticizer, a catalyst, a hardening agent, etc., as appropriate.
There are no particular restrictions on the binder resin, 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. Examples include resins, petroleum resins, ketone resins, epoxy resins, melamine resins, fluorine resins, silicone resins, cellulose derivatives, and rubber resins. These resins can be used alone or in combination of two or more.
There are no particular restrictions on the colorant, and examples include inorganic pigments such as carbon black, iron black, titanium white, antimony white, yellow lead, titanium yellow, Bengara, cadmium red, ultramarine blue, cobalt blue, and quinacridone red. , isoindolinone yellow, nickel azo complex, phthalocyanine blue, azomethine azo black, and other organic pigments or dyes; metal pigments made of flaky foil pieces such as aluminum and brass; flaky foils such as titanium dioxide-coated mica and basic lead carbonate; Pearl pigments consisting of flakes are used.
The pattern layer may contain additives such as antioxidants, ultraviolet absorbers, and light stabilizers.

The thickness of the picture pattern layer 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 by the picture.

<Matte layer>
It is preferable that the decorative material of the present invention further includes a matte layer (not shown) in the pattern ink layers 2a and 2b. The matte layer can create a difference in gloss with the surrounding area and create a visual sense of unevenness.
The matte layer may be provided on the entire surface of the pattern ink layers 2a and 2b, but in consideration of creating a difference in gloss with the surrounding area and creating a visual unevenness, the pattern ink layer is It is preferable to provide it directly above and in the vicinity of the pattern ink layers 2a and 2b, and more preferably to provide it in a limited manner just above the pattern ink layers 2a and 2b.

The matting layer 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 particles made of silica, alumina, aluminosilicate, kaolinite, calcium carbonate, barium sulfate, glass, and the like.
Examples of the organic fine particles include particles made of acrylic resin, polycarbonate resin, urethane resin, urea resin, benzoguanamine resin, benzoguanamine-melamine-formaldehyde condensate, and the like.
As the matting agent, silica particles are preferred because they have a high matting effect and can easily control gloss. Further, as the matting agent, one of the above-mentioned matting agents may be used alone, or two or more kinds may be used in combination.
The particle size of the matting agent is preferably 1 μm or more and 10 μm or less, more preferably 2 μm or more and 9 μm or less, and even more preferably 3 μm or more and 7 μm or less, from the viewpoint of matting effect and gloss control. .

<Backing base material>
It is preferable that the decorative material further includes a backing base material (not shown) on the side opposite to the surface on which the pattern ink layers 2a, 2b are provided. The backing base material is provided as necessary to reinforce the decorative material, provide adhesiveness to the adherend, and provide concealment properties.

As the backing base material, resin sheets, paper, nonwoven fabrics, woven fabrics, metal foils, etc. can be used. Among these, as the resin sheet, a sheet made of acrylic resin, polyester resin, polyolefin resin, polyvinyl chloride resin, ABS resin, etc. can be used.

The thickness of the backing base material is preferably 0.05 mm or more and 0.15 mm or less, more preferably 0.06 mm or more and 0.13 mm or less, and 0.08 mm or more and 0.13 mm or less, from the viewpoint of improving reinforcing properties, adhesive properties, and hiding properties. .12 mm or less is more preferable.

<Adhesive layer>
In the decorative material, it is preferable that an adhesive layer (not shown) is provided between at least one of the base material 1, the pattern ink layers 2a and 2b, the picture pattern layer, the matte layer, and the backing base material. The adhesive layer has a function of assisting the bonding of each layer of the base material 1, the pattern ink layers 2a and 2b, the picture pattern layer, the matte layer, and the backing base material, and can strengthen the bonding of each layer.
The adhesive layer is preferably at least one selected from two-component curable resins, thermoplastic resins, thermosetting resins, and ionizing radiation curable resins.

<Primer layer>
In the decorative material, it is preferable that a primer layer (not shown) is provided between at least one of the base material 1, the pattern ink layers 2a and 2b, the picture pattern layer, the matte layer, and the backing base material. The primer layer has a function of assisting the bonding of each layer of the base material 1, the pattern ink layers 2a and 2b, the picture pattern layer, the matte layer, and the backing base material, and can strengthen the bonding of each layer.
As the primer layer, a resin that improves the adhesion between the two layers facing each other with the primer layer in between may be appropriately selected, and there are no particular limitations.

According to the decorative material according to the embodiment of the present invention, it is possible to provide a decorative material that has a complex and sophisticated design due to its visual effects and tactile sensation.

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

[Measurement and evaluation]
The following measurements and evaluations were performed on the decorative materials produced in Examples and Comparative Examples. The results are shown in Table 1.

<Thickness measurement>
The thickness of the pattern ink layer of the decorative materials produced in Examples and Comparative Examples was determined by measuring the thickness at 20 locations from cross-sectional images taken using a scanning electron microscope (SEM) for the relevant locations, and determining the thickness at 20 locations. Calculated from the average value. The accelerating voltage of the SEM was 3 kV, and the magnification was 5,000 times.
Regarding the thicknesses T ₁ and T ₂ in Example 3 and Example 4, which are examples of the second configuration, for the pattern ink layer 2b on the decorative material, the pattern ink layer 2b corresponding to the deepest part of the gravure plate The average value of the measured values at 20 thickness points at the thickest part of the gravure plate is _T1 , and the average value of the measured values at 20 thickness positions at the thinnest part of the pattern ink layer 2b corresponding to the shallowest part of the gravure plate _{is T2.} And so.

<Design>
The surface of the decorative materials produced in Examples and Comparative Examples was checked for design using an uneven pattern. A score of 2 was given to a product that felt the design quality was quite high, a score of 1 score was given to a product that felt the design quality was high, and a score of 0 was given to a product that felt the design quality was hardly felt.20 test subjects evaluated the design, and the average score was calculated.
A: Those with an average score of 1.5 or more B: Those with an average score of 1.0 or more and less than 1.5 C: Those with an average score of less than 1.0

<Touch>
A touch check was performed on the surfaces of the decorative materials produced in Examples and Comparative Examples. Twenty test subjects gave evaluations, giving 2 points for those who felt a lot of unevenness, 1 point for those who felt unevenness, and 0 points for those that felt almost no unevenness, and calculated the average score.
A: Those with an average score of 1.5 or more B: Those with an average score of 1.0 or more and less than 1.5 C: Those with an average score of less than 1.0

[Example 1]
As the base material 1, colored thin paper base paper for building materials was prepared. Then, an ink for forming a resin pattern layer was prepared in which silica particles as a matting agent were contained in a two-component curable urethane resin.
Next, gravure printing was performed on the base material 1 using the prepared ink for forming a pattern ink layer, using a gravure plate material having a cell shape of a rectangular prism-like recess with an opening of 400 μm and a plate depth of 90 μm. As shown in FIG. 6, a first ink section assembly 2A ₁ consisting of a first ink section 2a ₁ was provided. Further, using a gravure plate material having a cell shape of a rectangular prism-like recess with an opening of 400 μm and a plate depth of 40 μm, gravure printing was performed on the base material 1 using the prepared pattern ink layer forming ink, As shown in FIG. 6, a second ink section assembly _2A2 consisting of a second ink section _2a2 was provided.
Next, curing was performed at 70° C. for 24 hours to obtain the decorative material in Example 1.
The resulting decorative material was evaluated for design and feel. The results are shown in Table 1.

[Example 2]
As the base material 1, colored thin paper base paper for building materials was prepared. Then, an ink for forming a resin pattern layer was prepared in which silica particles as a matting agent were contained in a two-component curable urethane resin. The prepared ink for forming a pattern ink layer was divided into two parts, and one part contained acrylic beads having an average particle size of 20 μm as particles 3. The amount of particles 3 added to the pattern ink layer forming ink was 15 parts by mass.
Next, using a gravure plate material having a cell shape of a rectangular prism-like recess with an opening of 400 μm and a plate depth of 90 μm, a pattern ink layer forming ink containing particles 3 was used to coat the base material 1. Gravure offset printing was performed, and as shown in FIG. 6, a first ink part assembly 2A ₁ consisting of a first ink part 2a ₁ was provided. In addition, a gravure plate material having a cell shape of a rectangular prism-like recess with an opening of 400 μm and a plate depth of 40 μm was used, and a pattern ink layer forming ink (not containing particles 3) was used to coat the gravure plate on the base material 1. Printing was performed, and as shown in FIG. 6, a second ink part assembly _2A2 consisting of a second ink part _2a2 was provided.
Next, curing was performed at 70° C. for 24 hours to obtain the decorative material in Example 2.
The resulting decorative material was evaluated for design and feel. The results are shown in Table 1.

[Example 3]
As the base material 1, colored thin paper base paper for building materials was prepared. Then, an ink for forming a resin pattern layer was prepared in which silica particles as a matting agent were contained in a two-component curable urethane resin.
Next, a gravure plate material having a cell shape with an opening of 400 μm, the deepest part of the plate depth of 90 μm, and the shallowest part of the plate depth of 40 μm that changes in a continuous function was used and prepared. Gravure printing was performed on the base material 1 using the ink for forming a patterned ink layer, and as shown in FIG. 7, a plurality of patterned ink layers (ink portions) 2b having a uniform inclination direction were provided.
Next, curing was performed at 70° C. for 24 hours to obtain the decorative material in Example 3.
The resulting decorative material was evaluated for design and feel. The results are shown in Table 1.

[Example 4]
A decorative material of Example 4 was obtained in the same manner as Example 3, except that the ink for forming a pattern ink layer contained acrylic beads having an average particle size of 20 μm as particles 3. Here, the amount of particles 3 added to the pattern ink layer forming ink was 15 parts by mass.
The resulting decorative material was evaluated for design and feel. The results are shown in Table 1.

[Comparative example 1]
Gravure printing was performed on the base material 1 using the prepared pattern ink layer forming ink using a gravure plate material having a cell shape of a rectangular prism-like recess with an opening of 400 μm and a plate depth of 90 μm, and as shown in FIG. As shown in FIG. 2, a decorative material of Comparative Example 1 was obtained in the same manner as in Example ₁ except that only the second ink part assembly 2A ₂ consisting of the second ink part 2A 2 was provided.
The resulting decorative material was evaluated for design and feel. The results are shown in Table 1.

The decorative material of the present invention has a complex and sophisticated design due to its visual effect and tactile sensation, and is suitable for interior and exterior parts of buildings such as walls, ceilings, and floors, window frames, doors, handrails, baseboards, and surrounding areas. In addition to fittings such as edges and moldings, it is suitably used as a decorative surface board for cabinets such as kitchens, furniture or light electrical appliances, and OA equipment, and as a layer constituting interior and exterior members of vehicles.

1... Base material 2a, 2b... Pattern ink layer 2a ₁ ... First ink part 2a ₂ ... Second ink part 2A ₁ ... First ink part assembly 2A ₂ ... Second ink part assembly 3... Particles 10... Decorative material

Claims (4)

comprising a base material and a patterned ink layer constituted by a plurality of ink parts on one side of the base material,
A decorative material in which the pattern ink layer has at least one of the following first configuration and second configuration, and the pattern is expressed by the configuration.
First configuration: having a plurality of ink parts having different thicknesses, the ink part having a first ink part and a second ink part having different thicknesses, the thickness of the first ink part being the same as the thickness of the first ink part. thicker than the second ink part, particles are present in the first ink part, particles are not present in the second ink part, and the average particle size of the particles is 5 μm or more and 50 μm or less, The thickness of the first ink part is thicker than the average particle diameter of the particles, the difference in thickness between the first ink part and the second ink part is 3 μm or more, and the thickness of the first ink part and the second ink part are The two ink parts are separated from each other without contacting each other, and the first ink part and the second ink part form a convex part on the surface of the decorative material. Second configuration: The thickness of the ink part is The ink portion increases monotonically in at least one direction within the surface of the decorative material , and the ink portion includes a first ink region in which particles are present in at least a part of the region , and a second ink region in which particles are not present over the entire region. The thickness of the first ink region is thicker than the thickness of the second ink region, and the average particle size of the particles is 5 μm or more and 50 μm or less, and the thickness of the first ink region is is thicker than the average particle diameter of the particles, and the first ink region and the second ink region form convex portions on the surface of the decorative material. The decorative material according to claim 1, wherein the pattern is a wood grain pattern having an annual ring part, and the first ink part constitutes an autumn wood part in the annual ring part. The decorative material according to claim 1 or 2 , comprising a picture pattern layer between the base material and the pattern ink layer. The decorative material according to any one of claims 1 to 3 , wherein the base material is a resin base material.