JPH0890544A - Surface patterning method for fiber reinforced cement board - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to obtain a surface patterning method for fiber-reinforced cement board materials that enables highly efficient production of lysine-like high-quality surface makeup by factory production rather than on-site painting. [Constitution] Fiber-reinforced cement board 1 Sealer coating on the surface 4
Before the coating film is dried and cured, the particulate matter 6 is evenly dispersed and adhered to be dried, and then the top coating 8 is applied to the entire surface of the fiber-reinforced cement board material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface patterning method for fiber-reinforced cement board material.

[0002]

2. Description of the Related Art Fiber reinforced cement boards are very widely used as building board materials for outer walls. These fiber-reinforced cement boards have a smooth surface, a ground color of gray white to gray black, and poor designability, so that various colors or uneven patterns are applied to the surface. By the way, a lysine paint is known as a paint finish for the outer wall composed of these fiber reinforced cement boards. This ricin paint is generally sprayed with fine sand mixed in the paint.
Combined with the uneven pattern design on the outer wall surface, it is generally preferred as a matte high-class design property in which the finely blended sand is raised on the surface.

[0003]

[Problems of the prior art] However, it is difficult to produce this lysine paint in a factory-productive manner due to the nature of the paint such as the blended sand particles and the nature of the finished appearance. There is a problem that I can not get it. Therefore, at present, such fiber-reinforced cement boards that have been subjected to such a lysine paint finish-like surface makeup have not been implemented in factory production.

[0004]

DISCLOSURE OF THE INVENTION In view of the above problems, the present invention provides a surface pattern of a fiber reinforced cement board material capable of producing a lysine-like high-quality surface makeup in a factory production highly efficiently rather than on-site painting. It was made for the purpose of obtaining the attachment method.

[0005]

That is, the surface patterning method of the fiber-reinforced cement board material according to the first aspect of the invention is such that the surface of the fiber-reinforced cement board material is coated with a sealer, and the particles are dried and hardened before the coating. It is characterized in that the substance is uniformly dispersed, adhered and dried, and then the entire surface of the fiber-reinforced cement plate material is overcoated.

According to a second aspect of the present invention, the surface of the fiber reinforced cement board having an uneven pattern is coated with a sealer and then dried, and then only a convex pattern on the surface is coated with a sealer or a top coat by a roll coater. Before the coating film is dried and cured, the particulate matter is evenly dispersed and adhered to be dried, and the particulate matter scattered on the concave pattern surface is removed, and then the entire surface is top-coated. It is a thing.

According to the third aspect of the present invention, the surface of the fiber reinforced cement board is coated with a sealer, and the particulate matter is evenly dispersed and adhered before the coating film is dried and hardened, and then the fiber reinforced cement. Grinding uneven pattern on the plate surface,
The present invention is characterized in that the entire surface of the fiber reinforced cement plate including this ground surface is coated with a sealer or a top coat and dried.

The invention described in claim 4 is characterized in that, in the invention described in claim 1, 2 or 3, the particulate matter is an inorganic or organic particle having a particle diameter of 2 mm or less.

[0009]

[Function] The lysine paint mixes fine sand particles in the paint and sprays the fine sand particles on the surface of the coating film to make the unevenness of the sand particles stand out to give a matte surface. In order to obtain this appearance, in the present invention, extrusion molding method, papermaking method, dry manufacturing method, sealer coating on the fiber reinforced cement board surface obtained by any manufacturing method such as casting method, before the coating does not dry and harden These particulates are adhered and fixed by evenly distributing the particulates and curing the sealer coating. As a result, the surface of the fiber-reinforced cement board is provided with an uneven surface made of particulate matter that gives a ricin-like appearance.

Although this fiber-reinforced cement board has a lysine-like base surface, it has not been colored yet. Therefore, the surface of this fiber-reinforced cement board is painted by coloring in any color. By this step, the surface of the fiber-reinforced cement board has an appearance of fine lysine-like high-quality appearance in which fine particulate matter is uniformly dispersed. Then, after that, the paint is dried to obtain a product.

According to the second aspect of the present invention, a makeup in which an uneven pattern and a lysine paint are combined is obtained, and only the surface of the convex portion of the fiber reinforced cement plate material having the uneven pattern on its surface is coated with a sealer by a roll coater. Then, the particulate matter is uniformly dispersed before the coating material is dried and cured, and the sealer coating is cured to adhere and fix the particulate matter. At this time, the particulate matter is selectively adhered and fixed only on the surface of the convex portion, the surface of the convex portion is a ricin-like ground surface, and the surface of the concave pattern is groundless.

The surface of the fiber-reinforced cement board which has been subjected to such treatment is finished by a sealer coating and a colored coating as in the above-mentioned invention. In the case of this method, only the surface of the convex pattern becomes the ricin-like finished surface due to the particulate matter on the surface of the convex portion. Then, a decorative cement board having a pattern of unevenness in which the convex surface is a lysine-like ground surface and the concave surface is smooth is obtained.

Further, in this makeup finish, almost no particulate matter adheres to the shoulder portion of the convex pattern of the uneven pattern, and this portion becomes a finished surface made smooth by the material and the top coating, and Since the parts with different appearances are scattered around in accordance with the convex and concave patterns, the decorative surface is changed and shaded, which is a pattern that cannot be obtained by ordinary ricin finishing.

A third aspect of the present invention relates to a makeup method for a makeup cement board having a pattern of a lysine-like ground as a convex surface and a flat ground surface as a concave surface as in the second invention. Similarly, after providing a ricin-like lower ground with a sealer coating evenly on the surface, the surface of the cement board is ground in an arbitrary pattern to give an uneven pattern, and the concave pattern surface obtains an uneven pattern without particulate matter. The colored coating is performed in the same process as the second invention.

In the inventions of claims 2 and 3, the irregular pattern on the surface of the fiber reinforced cement board is an irregular masonry pattern, a tile joint or a brick groove-like joint groove pattern to obtain a more design effect. .

According to the fourth aspect of the present invention, the size of the particulate matter for forming the lysine-like pattern is 2.0 mm or less. When the diameter of the particulate matter is larger, the surface irregularities due to the particulate matter are conspicuous, and as a decorative pattern, it is rather the opposite effect, and the surface irregularity causes the surface of the fiber-reinforced cement board to be in a state like a file, This is to prevent the protective paper inserted between the stacked plate materials from being torn and to prevent the surface pattern from being damaged by friction with the surface of another plate material.

As the particulate matter, in addition to inorganic particles such as colored sand grains, synthetic resin particles such as polystyrene beads and polyethylene beads can be used.

[0018]

Embodiments of the present invention will be described below. 1 to 5 are process diagrams for explaining the embodiment of the present invention.

[Example 1] A thickness of 20 mm was obtained by the Fourdrinier papermaking method.
A fiber-reinforced cement board 1 having a width of 450 mm and a length of 3,000 mm was molded and cured to obtain a pattern-free fiber-reinforced cement board. As shown in FIG. 1, this fiber reinforced cement board 1 is transferred by a conveyor 2 and an acrylic emulsion type sealer 4 is applied to the surface by a flow coater / roll coater coating device 3.
Apply evenly with 50g / m ² and then, before the sealer 4 is dried and cured, the maximum particle size is
Sand particles or polyethylene beads 6 having an average particle size of 1 mm with a size of 2 mm or less were uniformly dispersed at a rate of 500 g / m ² . Then
The sealer was dried and hardened, and the sand grains 6 were attached and fixed.

Thereafter, as shown in FIG. 2, the same acrylic emulsion paint 8 was applied on the surface by a flow coater 7 and dried in a drying oven 9 to obtain a product. When the cross section of the product surface was observed, as shown in FIG. 3, the surface of the particulate matter 6 of the sand particles or polyethylene beads fixed by the sealer 4 was uniformly overcoated 8 and a lysine pattern was formed by the particulate matter 6. Was observed.

[Example 2] A thickness of 20 mm was obtained by the Fourdrinier papermaking method.
A fiber-reinforced cement board 1 having a width of 450 mm and a length of 3,000 mm is formed, and while it is not cured, it is pressed with a flat plate on the surface as shown in FIG. 4 as a natural stone-like uneven pattern 11A and a brick-like joint groove pattern 11
Two types of uneven patterns of B were applied by a flat plate press. Then, it was cured and cured to obtain a fiber-reinforced cement plate without a pattern.

This fiber-reinforced cement board 1 is transferred by a conveyor 2 and an acrylic emulsion-based sealer 4 is evenly applied on the surface of the convex portion only by a roll coater at 50 g / m ² .
Then, before the sealer 4 is dried and hardened, sand particles 6 having the same particle size as in Example 1 are applied to the surface by a knurled roll 5.
It was sprayed uniformly so that the ratio was 0 g / m ² . Next, the paint is dried and the sand particles 6 scattered in the concave pattern on the surface of the plate 1
After removing the flow coater 7 as shown in FIG.
Acrylic emulsion paint 8 was applied according to and dried in a drying oven 9 to obtain a product.

When the cross section of the product surface is observed, as shown in FIG. 5, the shoulder portion 1B of the convex pattern 1A is particulate matter 6
Was hardly attached, and the surface was smooth, and the contour of the convex portion was greatly emphasized, resulting in a pattern appearance. Also, the convex pattern 1
In the central portion of A, it was observed that the surface of the particulate matter 6 of the sand particles or polyethylene beads fixed by the sealer 4 was uniformly overcoated and the unevenness of the particulate matter 6 formed a ricin-like surface pattern.

[Embodiment 3] A fiber reinforced cement board 1 having a particulate matter 6 adhered and fixed to the surface thereof was obtained in the same manner as in Embodiment 1, and a width of 10 was obtained by a router 12 on the surface thereof as shown in FIG.
Brick-like joint groove patterns 11B and 11B with 50 mm length and 150 mm width and 150 mm width and 4 mm depth were equally ground. After that, the entire surface of the fiber reinforced cement board is coated with a sealer and a top coat,
The paint was dried to obtain the product.

Fiber-reinforced cement board 1 obtained in Examples 1-3
The surface of Example 1 was observed, and the whole surface was a smooth decorative surface of lysine substrate, and Examples 2 and 3 were natural stone-like uneven patterns or brick joint-like uneven patterns, and the concave pattern portion was groundless. The convex pattern surface is a lysine substrate, and all of them have a very high-grade exterior structure with the lysine substrate as the basis.

[0026]

As described above, according to the method of the present invention, a ricin-like decorative surface obtained by spray-painting a compound paint of fine sand grains can be mass-produced in a factory, and conventional construction is possible. It has an effect that a large amount of ricin-like makeup surface, which was troublesome, can be obtained at low cost. Furthermore, since the contour of the convex pattern can be emphasized by the adhered state of the adhered particulate matter, there is also an effect that the surface pattern of the fiber-reinforced cement board material, which cannot be obtained by the conventional ricin-like coating, can be obtained.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a sealer coating process and a particulate matter spraying process of the present invention.

FIG. 2 is an explanatory view showing a coating and drying process of the present invention.

FIG. 3 is an enlarged cross-sectional view of a fiber-reinforced cement board material that has been subjected to the method of the present invention.

FIG. 4 is a sectional view of an essential part showing an example of a surface uneven press pattern of the present invention.

FIG. 5 is an enlarged cross-sectional view of a fiber-reinforced cement board material that has been subjected to the method of the present invention.

FIG. 6 is a cross-sectional view of an essential part showing an example of a surface unevenness ground pattern of the present invention.

[Explanation of symbols]

 1 ... Unhardened fiber reinforced cement board 2 ... Conveyor 3 ... Coating equipment such as flow coater, roll coater 4 ... Sealer 5 ... Knurl roll 6 ... Particulate matter 7 ... Flow coater 8 ... Paint 11A ... Natural stone-like uneven pattern 11B … Brickwork-like joint groove pattern

Claims (4)

[Claims] 1. The surface of the fiber-reinforced cement board is coated with a sealer, and the particulate matter is evenly dispersed and adhered before the coating film is dried and cured, and then the surface of the fiber-reinforced cement board is overcoated. A method for patterning a surface of a fiber-reinforced cement board, which is characterized by being performed. 2. A fiber-reinforced cement board material having an uneven pattern on its surface is coated with a sealer and then dried, and then only a convex pattern on the surface is coated with a sealer or a top coat by a roll coater. Surface pattern of fiber-reinforced cement board material characterized by uniformly dispersing and adhering particulate matter before drying and curing, and removing the particulate matter scattered on the surface of the concave pattern and then applying an overcoat on the entire surface How to attach. 3. The surface of the fiber reinforced cement board is coated with a sealer, and the particulate matter is evenly dispersed and adhered before the coating film is dried and cured, and then the surface of the fiber reinforced cement board is ground to have an uneven pattern. A surface patterning method for a fiber-reinforced cement board material, which comprises processing, and then applying a sealer or a top coat on the entire surface of the fiber-reinforced cement board including the ground surface and drying. 4. The surface patterning method for a fiber-reinforced cement board material according to claim 1, 2 or 3, wherein the particulate matter is an inorganic or organic particle having a particle diameter of 2 mm or less.