JPH11240122A - Preparation of decorative sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for preparing a decorative sheet in which the full advantages of design properties of colored aggregates are enough taken. SOLUTION: A raw material 1 for a decorative sheet with an uneven pattern wherein the surfaces of the projected parts 2 are flatted is coated with a sealer coating 4, if necessary, and then, an undercoating is applied to coat the whole surface with a colored untransparent coating 5 and in addition, as the intermediate coating 6, the surfaces of the flatted projected parts 2 are coated with a colored untransparent coating 6 and successively, before this coating 6 is dried, colored aggregates 7 in which at least two color shades are mixed and which have particle diameters or 0.1-5 mm are scattered with a density of 50-600 g/m<2> thereon and after the colored aggregates 7 on uncoated parts with the intermediate coating are removed, a colorless transparent or colored transparent coating 8 is applied on the whole face as a top coating.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a decorative board, and more particularly to a method for manufacturing a decorative board excellent in design.

[0002]

2. Description of the Related Art Conventionally, as decorative panels used for interior and exterior finishing of buildings, a tile-like or brick-like uneven pattern is applied to the surface thereof and an aggregate is applied to the surface to enhance the design. Used, but the amount of aggregate applied is small, the particle size of the aggregate is not appropriate for recognizing the aggregate, the aggregate is spread over the entire surface of the decorative board, and a single color aggregate is used Therefore, the design effect of the color aggregate only plays an auxiliary role in the design configuration of the decorative board, and the design property of the color aggregate could not be fully utilized.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a method of manufacturing a decorative board that makes full use of the design of a color aggregate.

[0004]

Means for Solving the Problems To achieve the above object, as a result of intensive studies, it has been found that a color having a predetermined particle size and a plurality of hues is formed on the flat portion of the decorative plate material having the flattened convex portions. If the aggregate is used at a predetermined density with the intermediate coating, and the base coating and the top coating are properly combined,
It has been found that a decorative plate excellent in design and durable can be obtained, and the present invention has been completed.

More specifically, the invention according to claim 1 of the present invention is to apply a colored opaque paint as an undercoat to a decorative board material having a concavo-convex pattern in which the convex surface is flattened, and then apply an intermediate coat. A colored opaque paint is applied to the surface of the flattened convex portion, and then a mixture of two or more hues is used until the paint is dried.
5 to 50 mm of color aggregate is applied on the flattened convex surface.
This is a method for producing a decorative board, which comprises applying a colorless transparent or colored transparent paint over the entire surface as a top coat after spraying at a density of 600 g / m ² .

[0006] Here, the term "material for decorative board having a concavo-convex pattern in which the surface of the convex portion is flattened" means, in particular, a decorative plate material having a concavo-convex portion on the surface and a flattened convex portion. Although not limited, a decorative board material having a tile-like or brick-like uneven pattern on its surface is exemplified. In addition, regarding the material of the decorative board material, not only wood chip cement board, inorganic exterior materials such as cement calcium silicate, but also wood fiber board, mineral fiber board, plywood and the like can be widely used, and there is no particular limitation. . In addition, on the surface of the decorative board material,
Before applying the undercoat paint, seal it if necessary to prevent the suction of the undercoat paint and partial bleeding.
It may be painted.

The colored opaque paint used as the undercoat or intermediate coat of the present invention may be either an organic solvent-based resin or an aqueous resin, such as urethane resin, acrylic resin, vinyl acetate resin, and vinyl acetate. -An enamel paint stock solution such as an acrylic copolymer resin, a vinyl chloride resin, an acrylic silicone resin, or a fluororesin is mixed with an organic or inorganic coloring pigment.

As the color aggregate used in the present invention, natural materials such as silica sand and pumice, artificial materials such as ceramics, plastics and metals and colored materials are used. Mix and use to obtain hue. The particle size of the color aggregate is 0.1 to 5 mm,
The spray density on the surface of the convex portion needs to be 50 to 600 g / m ² . In any case, if the value is less than the lower limit, the design of the color aggregate tends to be insufficient, and if the value exceeds the upper limit, the aggregate is too large or the density is too high to be applied to the decorative board material. This is because the desired coating properties may not be obtained in some cases. It is preferable to use a color aggregate having a particle size of 0.1 to 1.5 mm, and a spray density on the surface of the projection is preferably 100 to 400 g / m ² .

As the overcoating material used in the present invention, any of an organic solvent type and an aqueous type can be used. For example, urethane resin type, acrylic resin type, polyester resin type, acrylic silicone resin type, fluororesin type, etc. And a colorless transparent paint generally referred to as color clear paint.

After the entire surface of the colored opaque paint is applied as an undercoat, the colored opaque paint is applied on the flattened surface of the convex as an intermediate coat. Preferably it is dry.
On the other hand, it is necessary to spray the color aggregate onto the intermediate paint until the intermediate paint is dried. This is because the color aggregate is firmly bonded to the convex surface through the intermediate coating. In this case, “until drying” usually means a period until drying is performed to the extent that the paint is not applied to the finger by touch (hereinafter referred to as “touch drying”).

In this way, even if the color aggregate is scattered on a portion other than the surface of the convex portion, since the color aggregate is scattered on the uncoated portion of the intermediate coating, it can be easily spread by means such as air blow. Can be removed. Therefore, a decorative board having color aggregate attached only to the convex surface of the decorative board material can be easily obtained. Finally, the colorless transparent or colored transparent paint is applied over the entire surface as a top coat, and this is preferably performed after the intermediate paint is dried.

In the present invention, the method of applying the undercoat paint includes spraying by air spray, airless spray, flow coater and shower coater. Roll coater, sponge roll
Examples of the top coat are sprayers, sprayers, floor coaters, roll coaters and sponge roll coaters. Examples of the method of dispersing the color aggregate include a method using a pressure-feeding type aggregate spraying gun and a falling type aggregate dispersing machine.

[0013] When formed in this manner, the particle size and the scatter density of the aggregate are appropriate enough to appeal to the sight, and a fine three-dimensional pattern of the aggregate can be recognized, and a color forming pattern composed of a plurality of hues is formed. -Since the aggregate is sprayed and fixed only on the convex portion of the flattened decorative board, not only the design effect by the color aggregate becomes remarkable, but also the undercoat paint or the convex portion of the colored opaque concave portion. The hue of the intermediate coating and the gloss of the colorless transparent or colored transparent top coating are reflected to obtain a decorative plate excellent in design. In addition, the decorative plate is excellent in durability because the color aggregate is fixed by the intermediate coating and the top coating.

In other words, in the decorative board obtained by the present invention, the color aggregate is different from the conventional one in terms of design configuration.
It plays an independent role, not an auxiliary role, and makes full use of the design of the color aggregate.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One preferred embodiment of the method for producing a decorative board according to the present invention is as follows. First, a decorative plate material having a tile-like or brick-like uneven pattern on its surface is subjected to seal coating as needed, and then a colored opaque paint is entirely coated as an undercoat. Next, after drying the undercoat paint, a colored opaque paint is applied as an intermediate coat to only the flattened convex surface by using a roll coater, leaving joint portions of the concave portions. Subsequently, a color aggregate having a particle size of 0.1 to 1.5 mm, in which two or more hues are mixed, is applied from the upper side to 100 to 400 g / min until the intermediate coating paint dries to the touch. While spraying at a density of m ² and drying the intermediate paint, the color aggregates sprayed on the unpainted portion of the intermediate paint are removed by air blow or the like. The color aggregate is fixed only to the Finally, a colorless transparent or colored transparent paint is applied over the entire surface as a top coat.

When formed in this manner, a color aggregate which has a preferable particle size and a scatter density for recognizing a fine three-dimensional pattern and forms a color-coded pattern composed of a plurality of hues can be used in tile or brick tone. Since only the convex portions of the decorative plate material having the uneven pattern are scattered and fixed, the design effect of the color aggregate can be effectively recognized.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings using embodiments, but the present invention is not limited to the embodiments. FIG. 1 is a longitudinal sectional view of a main part of a decorative board manufactured by one method of the present invention, FIG. 2 is a plan view of a decorative board manufactured by one method of the present invention, and FIG. It is the elements on larger scale of A section.

(Example 1) First, brick-like patterns 2, 3
Acrylic urethane resin-based sealer (Toe Urethane ^# 500 sealer manufactured by Tope Co., Ltd.) 4 is used as a material 1 for a ceramic decorative board (exterior material) having airless or air-less.
The whole surface is coated with a spray at a rate of 80 g / m ² , and dried at 100 ° C. for 5 minutes with a hot air dryer (Perfect Oven PHH200 manufactured by Tabai Espec Corp.). Next, a grey-colored acrylic urethane resin-based primer (Toe Urethane ^# 500 enamel manufactured by Toupe Co., Ltd.) 5 is applied to the air.
Without paint or air spray at a rate of 80 g / m ² and dried at 100 ° C. for 5 minutes with the hot air dryer.
Then, an acrylic urethane resin-based intermediate coating (toe urethane ^# 500 enamel, manufactured by Toupe Co., Ltd.) 6 having a hue (beige color) different from that of the undercoat is roll-coated with a roll coater to obtain only 40 g of the material convex portion 2. painting at a density of m ^2.

After the intermediate coating 6 is applied only to the convex portions 2, the particle size is 0.1 to 1.5 mm before the intermediate coating 6 is dried to the touch.
White sand (Cerasand HW (white) manufactured by Misyu Kosan Co., Ltd.) and yellow (Cerasand HY (yellow) manufactured by Misshu Kosan Co., Ltd.) and brown (Cerasand HR manufactured by Misyu Kosan Co., Ltd. )) Are mixed at the same weight ratio, and the aggregate 7 is sprayed so as to have a density of 100 to 400 g / m ² , and after drying, the surface of the decorative sheet material 1 is air blown.
Then, the aggregate sprinkled on the uncoated uncoated portion 3 is removed. Finally, an acrylic urethane resin-based top clear paint (Toe Urethane ^# 500 clear, manufactured by Toupe Co., Ltd.) 8 is applied over the entire surface at a rate of 100 g / m ² by air-less or air-spray, and sufficient color aggregate is obtained. Stick.

With such a configuration, the color aggregate 7 forms white, yellow and brown color-coded patterns, while FIG.
Since a three-dimensional pattern with fine irregularities as shown in (1) is formed, and it is formed on the entire surface of the convex portion 2 of the tile-like irregular pattern, the degree of recognition of the viewer to these aggregate patterns is increased, This is due to the gray color of the undercoat 5 of the concave portion 3 and the beige color of the intermediate paint 5 of the convex portion 2.
Producing a more brilliant result, the design effect of the color aggregate on the whole decorative board becomes remarkable. In addition, the overcoat 8 imparts a glossing effect to the aggregate pattern and, if necessary, imparts depth to the hue when colored and transparent, and contributes to the fixation of the aggregate. As described above, the design effect of the color aggregate can be further enhanced by mixing the colors of the paints such as the color aggregate 7 and the undercoat 5.

[0021]

As described above, according to the first aspect of the present invention, the particle size and the scatter density are sufficient to appeal to the visual sense, the three-dimensional pattern by the aggregate is made conscious, and a plurality of hues are formed. Since the color aggregate forming the color-coded pattern is sprayed and fixed only to the convex portion of the flattened decorative board, the design effect by the color aggregate becomes remarkable. Further, by combining a color aggregate with a color opaque undercoat or hue of an intermediate coating or applying a colorless transparent or colored transparent top coating, a decorative plate having further excellent design properties and durability can be obtained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part of a decorative board manufactured by one method of the present invention.

FIG. 2 is a plan view of a decorative board manufactured by one method of the present invention.

FIG. 3 is a partially enlarged view of a part A in the preceding figure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Material for decorative board which has tile-like unevenness pattern 2 ... Material convex part for decorative board 3 ... Material concave part for decorative board 4 ... Sealer 5 ... Undercoat paint 6 ...・ Intermediate paint 7 ・ ・ ・ Aggregate 8 ・ ・ ・ Top paint

Claims (1)

[Claims] 1. A colored opaque paint is entirely coated as an undercoat on a decorative board material having a concavo-convex pattern with a flattened convex surface, and then a colored opaque paint is applied on the flattened convex surface as an intermediate coat. Until the paint dries, the particle size of a mixture of two or more hues having a particle size of 0.1.
A color aggregate of 1 to 5 mm is applied to the flattened convex surface by 5 mm.
A method for producing a decorative board, which comprises applying a colorless transparent or colored transparent paint as a top coat over the entire surface after spraying at a density of 0 to 600 g / m ² .