JPH07116596A - Method for manufacturing decorative board with uneven pattern - Google Patents

Abstract

(57) [Summary] [Structure] If necessary, after forming a sealer layer and a base coat on the uneven surface of a substrate having unevenness, apply a color clear paint on it and apply this paint while it is uncured. In this state with the surface facing downward, the color clear paint is cured to form a dark colored part of the paint on the convex part of the substrate and a lightly colored part of the paint on the concave part of the decorative board with an uneven pattern. It is a manufacturing method. [Effect] The uncured color clear paint concentrates in a hanging shape on the convex portions of the substrate, the coating film thickness increases, and the color appears dark. On the other hand, in the concave portion of the substrate, the coating film thickness becomes thin and the color becomes light. As a result, it is possible to reduce the number of tile-like decorative boards with uneven patterns in which the joints of the substrate are colored with a color close to that of the white base coat by providing the substrate with a deeply colored portion and the substrate with a lightly colored portion. It can be manufactured efficiently by the number of steps.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a decorative board in which a base coat is formed on an uneven surface of a substrate having unevenness after a sealer treatment, if necessary, and a color clear paint is applied on the base coat. More specifically, for example, the present invention relates to a method for producing a tiled decorative board with a concavo-convex pattern in which a joint portion of a substrate is colored with a color close to a white base coat. Such building boards are mainly used as wall materials in equipment units such as bathroom units and toilet units.

[0002]

2. Description of the Related Art Conventionally, in order to pattern a substrate having irregularities, especially a substrate with joints, coloring was performed with a color clear paint.

Further, in Japanese Patent Laid-Open No. 26670/1990, a base coat of a masking paint is provided on a substrate having irregularities, and a first pattern coat in the form of a masking paint and a spot of a paint having a small masking property are provided on the base coat. Japanese Patent Application Laid-Open No. 2-26671 discloses a method for manufacturing a building board in which a second patterned coat is formed and a top coat of clear paint is formed on the second patterned coat. For construction in which spot-shaped first pattern coat of hiding paint and spot-shaped second pattern coat of less hiding paint are formed on top, clear paint top coat is formed on it, and the surface is polished A method of making a plate is disclosed.

[0004]

However, in coloring with the color clear paint, the deeply colored part of the color clear paint flows into the concave part of the uneven surface of the substrate, and only the lightly colored part of the paint remains on the convex part. However, there was a problem that the base coat was visible through the lightly colored part. Therefore, it is necessary to color the joint portion of the jointed substrate other than white.

Further, JP-A-2-26670 and JP-A-2-26670.
In the method of -26671, the number of steps is large and the processing cost is high accordingly.

In view of the above points, an object of the present invention is to provide a decorative board with an uneven pattern which can minimize the coloring of the recesses and can color the joints of the substrate with a color close to the white base coat with a small number of steps. It is to provide a method that can be manufactured in a simple manner.

[0007]

The present invention has been devised in order to achieve the above-mentioned object, and a base coat is formed after subjecting the uneven surface of a substrate having unevenness to a sealer treatment, if necessary. Apply a color clear paint (colored by adding a pigment to clear paint) on the base coat, turn the painted surface downward while the paint is uncured, and put the dark colored parts of the paint on the convex parts. Further, it is a method for producing a decorative board with a concavo-convex pattern, characterized in that a lightly colored portion of the paint is formed in the concave portion.

In the present invention, a substrate having an uneven surface is used. As the board material, calcium silicate board, asbestos cement board, gypsum slag board, gypsum board, FRP board, plywood, wood board and the like are used. A base coat is formed on the uneven surface of the substrate after sealing with a moisture-curable urethane resin paint or the like as necessary. As a sealer treatment method or a base coat coating method, a method using a roll coater, a curtain flow coater, a spray, or the like is used alone or in combination. As the base coat paint, for example, a white paint having a concealing property such as a urethane-based enamel paint is often used.

Color clear coating is applied onto the base coat, preferably on the entire surface thereof. As color clear paint, paint with concealing property such as urethane enamel paint,
Urethane-based color clear paint is used. As a method of applying the color clear paint, a method using a roll coater, a curtain flow coater, a spray, or the like is used alone or in combination as in the above.

Immediately after the color clear coating on the base coat is completed, that is, before the color clear coating layer is uncured, the substrate is turned upside down so that the color clear coated surface faces downward. As a method of reversing the substrate, there are a method of sucking the back surface of the substrate to a suction cup to turn the substrate over, and a method of flipping the substrate while sandwiching the substrate from both front and rear ends with a pair of U-shaped sandwiching machines.

Thus, after the coated surface is faced down while the color clear coating layer is uncured, the substrate is brought into a drying oven in this state, the color clear layer is dried, and the coated surface is cured after the color clear coating layer is cured. Back up. After the color clear coat is formed in this manner, a top coat may be formed thereon if necessary. Urethane-based clear paints are examples of clear paints that apply top coat. As a method for applying the clear paint, the same method as the method for forming the base coat layer can be carried out.

[0012]

In the method according to the present invention, the sealer layer and the base coat are formed on the uneven surface of the substrate having the unevenness, if necessary, and the color clear paint is applied thereon, and the paint is applied before it is uncured. Since the color clear paint is cured in this state with the surface facing down, the uncured color clear paint concentrates in a hanging shape on the convex portions of the substrate, the coating film thickness increases, and the color appears dark. On the other hand, in the concave portion of the substrate, the coating film thickness becomes thin and the color becomes light. In this way, it is possible to manufacture a tile-like decorative board having a dark colored portion on the convex portion of the substrate and a light colored portion on the concave portion of the substrate.

[0013]

Embodiments of the present invention will be specifically described with reference to the drawings.

In FIG. 1, the uneven surface of a substrate (1) made of a calcium silicate plate having a thickness of 5 mm was subjected to a sealer treatment with a moisture-curing urethane paint (V-Celan # 100 sealer manufactured by Dainippon Paint Co., Ltd.) and then a sealer layer. (9) White hiding acrylic urethane enamel paint (Dainippon Paint Co., Ltd., V
-Seran # 200 enamel) was applied with a curtain flow coater to form a white base coat (2).

Next, a color clear paint (V-Seran # 100 color clear, manufactured by Dainippon Paint Co., Ltd.) is dripped from the slit (8) between the pair of rolls (6) (7) at the bottom of the curtain flow coater (3), A paint curtain (4) was formed and applied in layers on the base coat (2) of the substrate (1) which was moved by the belt conveyor (16).

After the color clear paint is applied on the base coat (2) in this way, the substrate (1) is inserted from the front and rear ends in a pair of U-shaped inserting machines while the color clear layer (5) is still uncured. It was sandwiched between (12) and (13), and the substrate (1) was turned over in this state. Then, with the coated surface facing down,
(1) was brought into a drying oven, the color clear layer (5) was dried, and after the color clear layer (5) was cured, the coated surface was returned upward.

Thus, the colored portion is formed on the convex portion (14) of the substrate (1).
A tile-like decorative board having (10) and a lightly colored portion (11) in the recess (15) of the substrate (1) was produced.

[0018]

According to the method of the present invention, the sealer layer and the base coat are formed on the uneven surface of the substrate having the unevenness, if necessary, and then the color clear paint is applied thereon.
While this paint is uncured, the color clear paint is cured in this state with the coating surface facing downward, so the uncured color clear paint concentrates in a hanging shape on the convex part of the substrate, and the coating thickness increases, The color looks dark. On the other hand, in the concave portion of the substrate, the coating film thickness becomes thin and the color becomes light.

As a result, a tiled decorative board with an uneven pattern in which the joints of the substrate are colored in a color close to that of the white base coat by providing the substrate with a deeply colored portion and the substrate with a lightly colored portion Can be efficiently manufactured with a small number of steps.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a process of an embodiment.

FIG. 2 is a perspective view showing a process of an example.

3 is a sectional view taken along the line III-III in FIG.

[Explanation of symbols]

 (1): Substrate (2): Base coat (3): Curtain flow coater (4): Paint curtain (5): Color clear layer (6) (7): Roll (8): Slit (9): Sealer layer ( 10): Dark colored part (11): Light colored part (12) (13): Inserting machine (14): Convex part (15): Recessed part (16): Belt conveyor

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B05D 3/02 Z 6804-4D

Claims (1)

[Claims] 1. A sealer layer and a base coat are formed on the irregular surface of a substrate having irregularities, if necessary, and a color clear paint is applied thereon, and the coated surface is faced down while the paint is uncured. A method for producing a decorative board with an uneven pattern, characterized in that the color clear paint is cured in the lever state to form a deeply colored part of the paint on the convex part of the substrate and a lightly colored part of the paint on the concave part.