JP6879682B2 - Cosmetic material - Google Patents

Description

The present invention relates to a decorative material.

Conventionally, interior materials using an inorganic board such as gypsum board or calcium silicate board as a base material are known. Since the design of this interior material is inferior only with the base material, a decorative layer is provided on the surface by attaching, painting, or printing a decorative sheet to improve the aesthetic appearance. In recent years, the color of the base material has been prevented from being exposed by painting the wood end surface of the interior material in order to give it a design.

For example, Patent Document 1 discloses that a water-based acrylic resin emulsion coating material containing titanium dioxide is applied to the wood end surface of a panel.

Further, Patent Document 2 discloses a non-combustible decorative board in which a decorative layer is laminated and molded on a colored calcium silicate board to improve the design of the wood end surface.

Japanese Unexamined Patent Publication No. 2001-293430 Japanese Unexamined Patent Publication No. 6-143484

However, although it is possible to color by painting the wood end surface, it is extremely difficult to form a pattern, and it is difficult to harmonize the decorative layer on the surface with the wood mouth surface.

The present invention has been studied in view of such a situation, and is a decorative material in which a design layer is provided on the front surface and / or the back surface of an inorganic base material, and a pattern layer is formed on the end surface of the wood.

Since the decorative material of the present invention also has a pattern layer formed on the grain surface, the base color does not appear and the appearance is good. In addition, a sense of unity can be obtained by forming a pattern that synchronizes with the decorative layer on the pattern layer, and by further providing a base layer, adhesion to the inorganic base material and concealment are improved, and marble patterns, wood grain patterns, etc. are created. If you give it, you can get a more realistic feeling.

The structural sectional view of the decorative material of this invention which formed the pattern layer on the end surface of one side. Example 1 Photograph of the end surface of a decorative material. A photograph of the end surface of the decorative material of Example 5 in which the base layer is not provided.

Hereinafter, the present invention will be described in detail.
As shown in FIG. 1, the decorative material of the present invention has a design layer formed on the surface of an inorganic base material and a pattern layer formed on the end surface of the wood. In FIG. 1, a pattern layer is formed on one side of the wood end surface, but both sides may be a part or the entire surface of the surrounding wood end surface when it is not rectangular, for example, circular or elliptical.

Examples of the inorganic base material according to the present invention include a cement plate, a volcanic vitreous multi-layer plate, a calcium silicate plate, a magnesium silicate plate, and the like. If a non-combustible decorative board rich in calcium is applied, the finished decorative material will look good, have excellent strength, and will be non-flammable.

The thickness of the inorganic base material is preferably 3 mm to 20 mm from the viewpoint of strength and ease of handling. The density is preferably 0.5 to 2.0 g / cm3. If the density is less than the lower limit, the underlying layer is easily sucked in, and if it exceeds the upper limit, it becomes heavy and the handleability tends to be inferior.

In particular, a calcium silicate plate that is lightweight and has excellent water resistance, workability, impact resistance, and dimensional stability is preferably used, and a calcium silicate plate having a thickness of 6 to 12 mm is particularly easy to handle with little bending.

Examples of the calcium silicate board include a calcium silicate board type 2 which is made from a silicic acid raw material, a calcareous raw material and a reinforcing fiber and is made by a wet machine, and a calcium silicate board type 3 which is compression-molded by a board press. .. In the present invention, calcium silicate plate type 2 which is subjected to high-temperature and high-pressure steam curing in an autoclave and has a strong and stable crystal structure is preferably used.

The design layer on the surface is applied by means such as decorative board and painting. When a decorative board is used, a melamine decorative board having excellent heat resistance, impact resistance, and abrasion resistance is preferable, and the decorative board is adhered using an adhesive. In the case of painting, an undercoat layer is provided, a print layer is formed, and a topcoat layer is provided.

As the paint for the undercoat layer, an acrylic resin paint, an epoxy resin paint, a polyurethane resin paint, an acrylic silicon paint, or the like can be used, and an ultraviolet curable type may be used. As a coating method, known methods such as flow coat, roll coat, gravure roll coat, and spray coat can be used. The solid content of the undercoat layer is preferably 30 to 60 g / m ² from the viewpoint of smoothness of the decorative material and adhesion to the printing layer.

The print layer can be formed by gravure printing, flexographic printing, screen printing, inkjet printing, or the like, and it is economical to adopt inkjet printing suitable for small-quantity production with less waste of ink. The solid content of the printing layer is preferably ^{0.1 to 30 g / m 2.}

Epoxy acrylate, urethane acrylate, acrylic acrylate, unsaturated polyester-based paint and the like are used for the top coat layer, and an ultraviolet curable type having excellent coating hardness and chemical resistance may be used. As a coating method, a known method such as a flow coat, a roll coat, or a gravure roll coat can be used. The solid content of the top coat layer is preferably 50 to 120 g / m ² from the viewpoint of smoothness of the decorative material.

A pattern layer is formed on the end surface of the wood. The pattern layer may be formed directly, but by providing the base layer, the color tone of the wood end surface can be concealed and the adhesion with the pattern layer can be strengthened. The base layer is applied using an ultraviolet curable urethane acrylate, an acrylic resin paint, a moisture curable polyurethane sealer, or the like. Examples of the means for forming the base layer include spray coating and inkjet coating.

UV-curable urethane acrylate oligomers include polyols such as polyester polyols, polyether polyols, and polycarbonate polyols, iisocyanate compounds, hydroxyethyl acrylates, hydroxypropyl acrylates, hydroxybutyl acrylates, trimethylolpropan triacrylates, and pentaerythritol triacrylates. A reaction product with an acrylate monomer having a hydroxyl group such as an acrylate monomer having a hydroxyl group such as dipentaerythritol triacrylate is preferably used.

When using an ultraviolet curable urethane acrylate oligomer, a photopolymerization initiator is used. Examples of the photoinitiator include benzyl ketal, α-hydroxyacetophenone, α-aminoacetophenone, acylphosphine oxide, titanosen compounds, oxime esters and the like. Examples of commercially available products include IRGACURE184, 369, 651, 819, DAROCUR1173 (manufactured by BASF, trade name) and the like. The amount of the photoinitiator used is 1 to 10 parts by weight with respect to 100 parts by weight of the ultraviolet curable urethane acrylate oligomer. If it is more than 10 parts by weight, the cured film is colored, and if it is less than 1 part by weight, sufficient curing cannot be obtained. Further, a curing agent may be added.

When irradiating ultraviolet rays, an ultra-high pressure mercury lamp, a high pressure mercury lamp, a low pressure mercury lamp, a carbon arc, a metal halide lamp, or the like is used, and has an energy of ^{100 to 800 mJ / cm 2 in a wavelength region of 100 to 400 nm, preferably 200 to 400 nm.} Irradiate with ultraviolet rays.

The acrylic resin coating material is a copolymer obtained by copolymerizing an ester such as a methacrylic acid ester and / or an acrylic acid ester with styrene, vinyl acetate, α, β-ethylene unsaturated acid, pukudiene or the like as optional components. A compounded resin is dissolved in an organic solvent, and a color pigment, an extender pigment, a metal powder pigment, a plasticizer, a cellulose such as nitrocellulos, and a cellulosic acetobutylate is blended as necessary, and the like is prepared by a known method. It can be mixed and dispersed.

When the solid content of the base layer after curing is 50 to 120 g / m ² , it is preferable from the viewpoint of the smoothness of the decorative material, and the printability is improved.

The pattern layer is formed by inkjet printing using an ultraviolet curable ink. UV curable inks contain polymerizable monomers and / and colorants such as oligomers, photopolymerization initiators, dyes and pigments.

As the inkjet printing machine used in the present invention, a conventionally known printer can be used, and for example, an on-demand method, a charge control method, and a method of ejecting ink by a thermal head are adopted. The coating amount after curing is preferably 0.1 to 60 g / m ^{2 in terms of solid content.}

A concealing layer may be provided between the base layer and the pattern layer, and the concealing layer can be formed of a paint containing titanium dioxide.

Formation of primer layer Modified polyisocyanate (trade name, Aika Aibon, AE-128H, manufactured by Aica Kogyo Co., Ltd.) is applied as a primer layer on the surface of a calcium silicate plate having a thickness of 6 mm, and the solid content becomes 20 g / m ^{2 after drying.} It was applied with a roll coater and dried with hot air.

Formation of Undercoat Layer As an undercoat layer, a moisture-curable urethane paint (VP9383470, manufactured by KLEIBERIT) was ^{applied with a roll coater so that the solid content after curing was 30 g / m 2,} and dried to form an undercoat layer.

Formation of print layer Next, the pattern layer is printed by inkjet printing using an ultraviolet curable ink containing a coloring material so that the coating amount is 10 g / m ^2, and the irradiation intensity is 600 m J / cm ^{2 with a metal halide lamp.} The design layer was formed by irradiating with ultraviolet rays.

Formation of top coat layer 70 parts by weight of a resin containing urethane acrylate as the main component (R-1302XT manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) and a trifunctional acrylate monomer (PET-3 manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) ) Is 30 parts by weight in solid content, monofunctional acrylate monomer (manufactured by Daiichi Kogyo Seiyaku Co., Ltd., ME-3) is 10 parts by weight in solid content, IRGACURE TPO (manufactured by BASF, 2,4,6-) as a photoinitiator. 1 part by weight of trimethylbenzoyl-diphenyl-phosphine oxide) and 0.3 part by weight of BYK-378 (trade name, manufactured by Big Chemie Japan Co., Ltd., polyether-modified dimethylpolysiloxane) as a leveling agent are mixed to form an ultraviolet curable type. A resin composition (A) was obtained.
Next, the ultraviolet curable resin composition (A) was applied onto the printing layer with a roll coater so that ^{the solid content after curing was 80 g / m 2, and the irradiation intensity was 450 mJ / cm 2 with a meral halide lamp.} The top coat layer was formed by irradiating with ultraviolet rays so as to be.

Preparation of Base Agent Next, as a bifunctional urethane acrylate oligomer, UN-2301 (trade name: Art Resin, manufactured by Negami Kogyo Co., Ltd., weight average molecular weight 740) was added as a solid content of 60 parts by weight, and as a 10-functional urethane acrylate oligomer, UN- 50 parts by weight of solid content of 904 (trade name: Art Resin, manufactured by Negami Kogyo Co., Ltd., weight average molecular weight: 4900), and IRGACURE184 (trade name, manufactured by BASF, 1-hydroxy-cyclohexyl-phenyl-ketone) as a photoinitiator. 5 parts by weight, 1 part by weight of IRGACURE 819 (BASF, bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide), BYK313 (trade name, Big Chemy Japan Co., Ltd., polyether) as a leveling agent The modified dimethylpolysiloxane) was diluted with 1 part by weight and methylisobutylketone with 24 parts by weight to obtain an ultraviolet curable resin composition (B) for use as a base. The ultraviolet curable resin composition (B) was transparent.

Formation of Underlayer Next, on the end surface of the calcium silicate plate on which the design layer was formed, 32 parts by weight of titanium dioxide was added to 100 parts by weight of the ultraviolet curable resin composition (B), and modified polyisocyanate was used as a curing agent. A white ultraviolet curable resin composition containing 50 parts by weight of solid content (trade name, Aika Aibon, AE-128H, manufactured by Aika Kogyo Co., Ltd.) is sprayed so that ^{the solid content after curing is 100 g / m 2.} The coating was applied, and an underlayer was formed by irradiating with an ultraviolet ray so that the irradiation intensity was 450 mJ / cm ^{2 with a metal halide lamp.}

Formation of pattern layer Next, after forming a wood grain pattern by inkjet printing so that the solid content after curing is 10 g / m ² using an ultraviolet curable ink containing a coloring material, the irradiation intensity is 600 mJ / cm with a metal halide lamp. ^A decorative material was obtained by irradiating ultraviolet rays so as to be 2.

Formation of Underlayer In Example 1, the ultraviolet curable resin composition (B) was sprayed on the end surface of the calcium silicate plate on which the design layer was formed so that the solid content after curing was 100 g / m ^2. The base layer was formed by irradiating with ultraviolet rays so that the irradiation intensity was 450 mJ / cm ^{2 with a metal halide lamp.}

Formation of concealing layer Next, inkjet printing was performed using an ultraviolet curable ink containing titanium dioxide so that the solid content after curing was 30 g / m ^2, and then the irradiation intensity was 600 m J / cm ² with a metal halide lamp. A concealing layer was formed by irradiating with ultraviolet rays.

Formation of pattern layer Next, a wood grain pattern was formed in the same manner as in Example 1.

Formation of Underlayer In Example 2, instead of the ultraviolet curable resin composition (B), an acrylic resin-based white lacquer containing titanium dioxide (manufactured by Aika Kogyo Co., Ltd., HR-5414G, methyl methacrylate-styrene-based) was used. The solid content after drying was 100 g / m ² , which was applied by spraying and dried with hot air. Next, a wood grain pattern was formed in the same manner as in Example 1 without providing a concealing layer.

Formation of Underlayer In Example 2, instead of the ultraviolet curable resin composition (B), a urethane resin-based primer (manufactured by Aika Kogyo Co., Ltd., JW-900N, containing 25 to 35% by weight of urethane prepolymer) was used. It was applied by spraying so that the solid content after curing was 100 g / m ^{2, and dried with hot air.}

Formation of concealing layer Next, inkjet printing was performed using an ultraviolet curable ink containing titanium dioxide so that the solid content after curing was 30 g / m ^2, and then the irradiation intensity was 600 m J / cm ² with a metal halide lamp. A concealing layer was formed by irradiating with ultraviolet rays.

Formation of pattern layer Next, a wood grain pattern was formed in the same manner as in Example 1.

In Example 1, the same procedure was carried out except that the base layer was not provided.

The evaluation results are shown in Table 1.

The evaluation method was as follows.
(1) Pattern on the surface of the wood The case where a pattern can be formed on the surface of the wood is marked with a circle.
(2) Print appearance (concealment)
○ ・ ・ ・ The shade of the wood grain pattern is clear.
× ・ ・ ・ The shade of the wood grain pattern is not clear due to the influence of the base color.
(3) Adhesion A cellophane tape having a width of 24 mm is pressure-bonded to the pattern layer and strongly peeled off vertically to evaluate the presence or absence of peeling of the ink and the base coating.
○ ・ ・ ・ No peeling points.
× ・ ・ ・ There is a peeling point.

2 Underlayer 4 Picture layer 7 Undercoat layer 8 Printing layer 9 Topcoat layer 10 Base material 30 Decorative material

Claims (6)

A primer layer, an undercoat layer, a design layer, and a top coat layer are sequentially provided on the front surface and / or the back surface of the inorganic base material, and a pattern layer by inkjet printing is formed on the end surface of the wood through the base layer. Is a decorative material characterized by being a methyl methacrylate-styrene-based solvent-based acrylic paint. Decorative material of claim 1, wherein the solvent-based acrylic paint, characterized in that it comprises titanium dioxide. The decorative material according to claim 1 or 2, wherein the inorganic base material is a calcium silicate plate. A method for producing a decorative material, which comprises the following steps (A) and (B).
(A) A step of sequentially forming a primer layer, an undercoat layer, a design layer, and a top coat layer on the front surface and / or the back surface of an inorganic base material.
(B) A step in which a pattern layer by inkjet printing is formed on the wood end surface of the inorganic base material via an underlayer, and the base layer uses a solvent-based acrylic paint based on methyl methacrylate-styrene. The method for producing a decorative material according to claim 4, wherein the solvent-based acrylic paint contains titanium dioxide. The method for producing a decorative material according to any one of claims 4 or 5, wherein the inorganic base material is a calcium silicate plate.

Images