JPH057828A - Coating method for inorganic board - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object to provide a non-combustible building material having an uneven pattern rich in shading on the surface. [Structure] The surface of the inorganic plate (1) having the uneven pattern (2) on the surface was first coated with lysine and then attached to the convex portion (21) of the uneven pattern (2) by the reverse roll (6). Only the lysine coating (3) is scraped off, and then a gloss coating is applied with a flow coater (7). [Effect] During gloss coating, the lysine coating (3) that covers the surface of the protrusions (21) of the uneven pattern (2) is scraped off by the reverse roll (6), and the gloss coating (4) is left on the traces. Formed and recessed (2
2) Since the lysine coating film (3) remains on the surface, a highly shaded three-dimensional uneven pattern (2) is formed, and a nonflammable material with high commercial value is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for coating an inorganic board such as a cement fiber board, a calcium silicate board or a gypsum board.

[0002]

2. Description of the Related Art The above-mentioned inorganic plate has been used as a non-combustible building material as an outer wall material or an inner wall material, but conventionally, an uneven pattern is formed on the surface thereof, and lysine coating is applied on the surface thereof for makeup.

Conventionally, to apply the above-mentioned lysine coating, a lysine coating in which fine sand is dispersed in a vehicle is sprayed over the entire surface of an inorganic plate, or an entire surface is lysed, or an adhesive is applied only to the convex surface and then fine sand is fixed by spraying. Partial ricin painting was done.

[0004]

However, the above-mentioned conventional lysine coating can obtain only a flat makeup with less shading.

[0005]

Means for Solving the Problems As a means for solving the above-mentioned conventional problems, the present invention provides a lysine coating on the entire surface of an inorganic plate (1) having an uneven pattern (2) on the surface,
Reverse roll the lysine coating film (3) attached to the convex part (21).
Inorganic board scraped by (6) and then coated with gloss
The coating method of (1) is provided.

The inorganic board used in the present invention is a cement fiber board, a calcium silicate board, a gypsum board, a magnesium carbonate board or the like, and an uneven pattern is formed on the surface by a template or an embossing roll.

The lysine coating is carried out by spraying a lysine coating prepared by mixing fine sand with a vehicle such as a synthetic resin emulsion or a synthetic resin solution onto the surface of the inorganic plate with a spray gun. The lysine paint may be mixed with a coloring material such as a dye or a pigment, an ultraviolet absorber, an antiaging agent or the like.
Further, in the lysine coating, an adhesive such as a synthetic resin emulsion or a synthetic resin solution may be sprayed onto the surface of the inorganic plate with a spray gun, and then fine sand may be sprayed from thereover.

In the present invention, after the lysine coating, the lysine coating film adhered to the convex portions is scraped off by a reverse roll, and then the gloss coating is applied. However, the gloss coating used for the gloss coating contains no pigment. A clear lacquer paint or a clear emulsion paint is mainly used, but if desired, a coloring material such as a dye or a pigment may be added, and an ultraviolet absorber, an antiaging agent or the like may be added.

[0009]

In the present invention, after the lysine coating is applied to the entire surface of the inorganic plate having the uneven pattern on its surface, the lysine coating film adhered to the protrusions is scraped off by the reverse roll, and then the gloss coating is applied. The lysine coating film is formed only on the concave and convex portions on the surface. Since the inorganic plate has a slight cushioning property, it fits well with the reverse roll surface, and when scratching the lysine coating, it does not easily scratch like the steel plate, and even if scratched it will naturally corrode due to rust etc. Does not happen. The rough surface of the lysine coating film on the concave portion diffusely reflects light, and the convex portion has a smooth and strong gloss.

[0010]

EXAMPLE The present invention will be described with reference to an example shown in FIGS. 1 to 4. The surface of the inorganic plate (1) has a convex portion (21) and a concave portion (2).
2) is formed, and the surface of the inorganic plate (1) is sprayed with lysine paint (3) A from the spray gun (5) as shown in FIG. A coating film (3) is formed.

After the above-mentioned lysine coating, as shown in FIG. 2, the inorganic plate (1) is rotated by a reverse roll (6) which is rotating in the arrow B direction opposite to the feeding direction of the inorganic plate (1) indicated by the arrow A. )
The lysine coating film (3) formed on the convex portion (21) of the uneven pattern (2) of (3) is scraped off. A support roll (61) and a scraping roll (62) are arranged in contact with the reverse roll (6) on the opposite side of the reverse roll (6).

Then, as shown in FIG. 3, a gloss coating (4) A is applied to the entire surface of the inorganic plate (1) by a flow coater (7) to form a gloss coating film (4). Thus, as shown in FIG. 4, the concaves and convexes of the uneven pattern (2) of the inorganic plate (1)
(22) The surface is covered with a lysine coating film (3) and has little gloss,
The surface of the convex portion (21) is covered with only the gloss coating film (4) and is shaded so as to have gloss.

In the present invention, a well-known coating tool such as a roll coater, a knife coater or a spray gun may be used for gloss coating. When a roll coater is used, the gloss coating is applied only to the surface of the convex portion (21) of the concave-convex pattern (2) of the inorganic plate (1), so that the contrast of the shadow is further increased.

[0014]

According to the present invention, since the lysine coating film remains on the concave surface of the uneven pattern on the surface of the inorganic plate and the convex surface is covered only with the glossy coating, the concave surface has less gloss due to irregular reflection. On the other hand, the convex portion has a strong luster, and a non-combustible building material having an extremely shaded and three-dimensional appearance can be obtained.

[0015]

[Brief description of drawings]

 1 to 4 show an embodiment of the present invention.

[Fig.1] Illustration for painting lysine

[Fig. 2] Illustration for scraping lysine coating film

[Figure 3] Illustration for gloss coating

[Figure 4] Partial plan view of the product

[Explanation of symbols]

 1 Inorganic board 2 Concavo-convex pattern 21 Convex part 22 Concave part 3 Lysine coating film 4 Gloss coating film 6 Reverse roll

Claims (1)

Claims: 1. A lysine coating is applied to the entire surface of an inorganic plate having an uneven pattern on the surface, the lysine coating film adhered to the protrusions is scraped off by a reverse roll, and then a gloss coating is applied. A method for coating an inorganic plate characterized in that