JPS5812128B2 - Manufacturing method for glass fiber reinforced cement decorative molded products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a glass fiber reinforced cement decorative molded product, in which a blinding body 3 is attached to a protrusion 2 for forming joints protruding in a formwork 1 having an open top. A glass fiber-reinforced cement characterized in that the colored cement slurry 4 is spread within the formwork 1 after installation, and then the blinder 3 is removed and the glass fiber-reinforced cement slurry 5 is spread on the top surface of the colored cement slurry 4. This relates to the manufacturing method of cosmetic molded products.

Traditionally, to form a pattern of tiles, real tiles were laid one by one on top of the underlying mortar, and then the spaces between the tiles were filled with white joints. Panel-shaped tiles are made by integrating several tiles, which requires a lot of time and effort to install by arranging the tiles on top of the mortar and filling the spaces between the tiles with joint material. Patterned items were desired.

In addition, cracks occur between the joint material itself and between the joint material and each tile, resulting in an unsatisfactory appearance and problems with waterproof performance.

Another construction method is to place real tiles one by one in a predetermined formwork, and then form a layer of white cement or ordinary Portland cement as the backing material.
One construction method involves removing the cement from the formwork after it has hardened to obtain a large panel made up of multiple tiles, and then installing this large panel on top of the mortar that has been laid down.

However, with this method, a panel-like molded body is obtained by integrating multiple tiles with a cement backing material, and then this is constructed on mortar, which eliminates the problem of time-consuming construction. However, because the tiles and the cement backing material are not of the same quality, the integrated panel-shaped molded body warps, making it difficult to install properly.

Another problem was that the boundary between the tile and the cement backing material was difficult to penetrate.

The present invention is intended to eliminate the above-mentioned drawbacks, and its first purpose is to form tiles by sequentially distributing colored cement slurry and glass fiber-reinforced cement slurry within a formwork having protrusions for forming joints. The second objective is to provide a manufacturing method for a glass fiber reinforced cement decorative molded product that can produce a tile-like panel in which the colored layer and the base material layer are all made of cement. To provide a manufacturing method for a glass fiber-reinforced cement decorative molded product that has good workability, is much cheaper than real tiles, and can reduce the weight of the panel.

The present invention will be described in detail below.

The formwork 1 has a substantially rectangular shape and is concavely bent into a substantially rectangular shape except for the periphery, and a lattice-shaped protrusion 2 for forming a white background is protruded from a concave portion 6 which is open at the top. The recess 6 has an inverse shape to the surface shape of the panel covered with tiles.

The blindfold body 3 has a net shape as shown in FIG. 3, and can hide the lattice-shaped projections 2.

Therefore, when producing a glass fiber reinforced cement cosmetic molded product, a net-like blinder 3 is installed on the protrusion 2 of the formwork 1 as shown in Fig. 1a, and between the colored layers of the cosmetic molded product is After covering the protrusions 2 corresponding to the joints, a colored cement slurry 4 mainly composed of cement and pigment was spread inside the formwork 1, and a large number of rectangular shapes separated by the protrusions 2 were formed in the recesses 6. A layer of colored cement slurry 4 is formed.

Next, after removing the blind body 3 from above the protrusion 2, a glass fiber reinforced cement (hereinafter referred to as GRC) slurry 5, which mainly consists of cement and glass fibers, is molded onto the colored cement slurry 4 as shown in Figure 1. A layer of the GRC slurry 5 is formed on the colored cement slurry 4 by spreading it over the entire surface of the frame 1.

Next, after curing and hardening the formwork 1, colored cement slurry 4, and GRC slurry 5 as one body, the hardened cement molded body is released from the formwork 1 as shown in FIG. 2, and the base material layer 8
is made of GRC, and a large number of tile-shaped colored layers T are made of colored cement to obtain a patterned decorative tile-like panel 9 in which a plurality of tiles made of colored cement are arranged.

The material of the formwork 1 used to manufacture the decorative tile-like panel 9 is not limited at all, and any material may be used as long as it does not lose its shape when a cement cured product is formed, such as synthetic resin, iron plate type, aluminum type, etc.

Furthermore, the material of the blinding body 3 installed on the protrusion 2 of the formwork 1 is thin paper.

It may be a thin rubber shift or the like, and the key is to cover the protrusions 2 so that the colored cement slurry 4 does not adhere to the upper part of the protrusions 2, and then cover the colored layer 7 and the base material of the finished decorative tile-like panel 9. It is sufficient if the joint portions 10 can be formed so that the color separation of the layers 8 is clear.

The composition of the colored cement slurry 4 is mainly composed of cement, pigment, and water, and is not particularly limited, but in addition to the above, emulsion resins (acrylic resin, acrylic/styrene copolymer resin, ethylene/vinyl acetate copolymer resin, etc.) may be used. , fillers (aggregate, inorganic fine powder), reinforcing short fibers (asbestos, glass fiber, pulp, etc.).

A water reducing agent, a thickening agent, etc. may be added.

Further, it is preferable to spread the colored cement slurry 4 so that the layer thickness is about 1.0 to 3.0 mm, and the colored cement slurry 4 can be spread by any method such as normal spraying or casting. There may be.

Although the composition of the GRC slurry 5 serving as the base material layer 8 is mainly composed of cement and glass fiber, other additives similar to those of the colored cement slurry 4 described above may be added without any problem.

Further, the thickness of the base material layer 8 is free, but since the base material layer 8 made of GRC is strong in terms of strength, it may be relatively thin, and is usually about 5
It is formed to have a thickness of about 15 mm.

Furthermore, the GRC slurry 5 can be sprayed by spraying cement and glass fibers separately with a spray gun or the like and spraying them in multiple layers, or by mixing cement and glass fibers with water in advance and spraying them. The slurry may also be cast.

The method for curing the cement molded body is not particularly limited, and may be any conventional curing method such as leaving it in nature or promoting moist heat.

Since the present invention has the above configuration, it is possible to manufacture a tile-shaped panel in which the colored layer and the base material layer are all made of cement, and furthermore, the colored layer and the base material layer are color-coded. The joints can be formed clearly, and since the colored layer and the base material layer are both made of the same material, cement, there is no warping or cracking, making it easier to install, and it is also easier to install than using real tiles. This can be done at a much lower cost and the weight of the panel can be reduced.

The present invention will be explained in detail below using examples.

Example 1 A formwork made of polyethylene (thickness: 1.0 mm) was prepared in advance, and the formwork had a surface shape that was the inverse of the shape when the tiles were laid.

Next, a blinder made of a thin rubber sheet (0.3 mm) as shown in Figure 3 is installed on the part that corresponds to the protrusion of this formwork, and then colored cement slurry of the following composition is applied to the formwork until the thickness reaches 3 mm. Cast on top.

(Composition) ○White cement 1 part by weight ○Pigment (
red iron) 0.07 0 Acrylic emulsion resin 0610 0 Silica powder 0.20 0 Alkali-resistant glass fiber 0.02 (1-2 am) ○Water reducer 0.01 0 Thickener 0.005 0 Water 06 Next After removing the hidden substance, use a mortar gun to make cement slurry with the following mixing ratio, and use a roving cutter to make the GRC slurry thicker than 15mm thick.
Cement slurry and glass fiber were sprayed alternately until the thickness reached 1 mm.

Cement slurry; White cement 1 part by weight 0 Silica powder 0.20 0 Water reducing agent 001 0 Thickener 0.005 0 Water 05 Glass fiber; Alkali-resistant glass fiber (trade name [Cem fill J) Length 12.5 mm For cement 5% by weight of the molded body is heated at 50°C, 95% RH while it is integrated with the formwork.
Accelerated curing was performed for 20 hours under moist heat conditions, and then the mold and the molded product were released to obtain a decorative tile-like panel with a tile pattern on the surface.

The panel obtained in this way had no warping in appearance, and when it was installed on a mortar underlay,
Compared to the conventional method of laying real tiles, construction was much faster, and no cracks occurred at joints or other areas.

[Brief explanation of drawings]

FIGS. 1a and 1b are longitudinal sectional views showing the manufacturing process of an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the molded product shown above, and FIG. 3 is a perspective view of the blindfold body shown above, 1 is a formwork, 2 is a protrusion, 3 is a blindfold, 4 is a colored cement slurry, and 5 is a glass fiber reinforced cement slurry.

Claims (1)

[Claims] 1 A blinder is installed on the protrusion for joint formation protruding into the formwork with an open top, and the colored cement slurry is spread inside the formwork.Then, the blinder is removed and the top surface of the colored cement slurry is spread. A method for producing a glass fiber-reinforced cement decorative molded product, which comprises spraying a glass fiber-reinforced cement slurry on a glass fiber-reinforced cement slurry.