JPH01101108A - Production of pattern mold for inorganic building material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method for manufacturing pattern molds for inorganic building materials.

[Conventional technology]

BACKGROUND ART Conventionally, inorganic building materials made of hydraulic raw materials such as cement and gypsum, especially inorganic wallboards, have generally been provided with an uneven pattern on their surfaces to give them decorative properties.

As a means for applying this uneven pattern, a roll having an uneven pattern on the surface is used, and when the roll is pressed against the surface of the uncured board material and rotated to form the pattern, a template having an uneven pattern on the surface is used, and the uncured plate is Patterns may be applied by pressing the plate material with a certain amount of pressure onto the surface of the plate material, or by pouring slurry onto the uneven surface of the template and curing it, and both the roll type and flat plate type mentioned above are made of metal. was used.

[Problems with conventional technology]

However, when the above-mentioned patterning means uses rolls, the plate material is inevitably rolled during patterning, and there is a drawback that a high degree of skill is required to regulate the shape.

On the other hand, while the flat plate type does not have the above-mentioned problems, it has the disadvantage that the patterning work is done in a batch system, resulting in poor productivity.However, if the shape must be precisely controlled, the flat plate type can be used to create the pattern. There are times when you have no choice but to do so.

However, the flat plate type is made of metal, and has the disadvantage that it is difficult to temporarily apply a textured pattern to a large area of the wall due to restrictions such as weight, and it is also large and expensive to manufacture. There were drawbacks that made it difficult to implement.

[Problems solved by the invention]

In view of the above-mentioned problems, the present invention has been made with the object of providing a method for manufacturing a patterned mold for a wall of a vast area at low cost and easily.

[Technology to solve problems]

That is, in the method of manufacturing pattern molds for inorganic building materials of the present invention, a peripheral frame is erected on a surface plate, hemihydrate gypsum is poured into the peripheral frame, and after the hemihydrate gypsum hardens, a pattern is formed on the gypsum layer. A mother mold of the mold is placed, and a hard plastic raw material is poured onto the mother mold and hardened, and a hard foamed plastic raw material is further poured onto the plastic raw material layer and foamed and hardened, and after the entire hardening is completed, the surrounding frame is removed. The method is characterized in that it consists of a step of removing the mold in which the plastic raw material and the hard foamed plastic raw material are integrated.

〔Example〕

Next, the present invention will be explained with reference to examples.

1 to 5 are explanatory diagrams showing the process of the method of this invention.

In the method of manufacturing pattern molds for inorganic building materials according to the present invention, a surrounding frame 2.2 that follows the contour shape of a predetermined wall plate is erected on a surface plate 1, and then a surrounding frame 2.2 is placed inside this surrounding frame 2.2 as shown in FIG. As shown in the figure, the hemihydrate gypsum slurry 3 is poured, and when the surface plate 1 is completely covered with the hemihydrate gypsum slurry 3 and reaches a certain thickness, it is hardened, and then a third layer is poured on this hardened gypsum layer 3'. As shown in the figure, a pre-formed pattern-shaped mother mold 4 made of silicone or the like is placed, and then, as shown in FIG. 4, a hard plastic raw material 5. and a hard foamed plastic raw material 6 is injected, the hard foamed plastic raw material 6 is foamed, and is integrally cured with the plastic raw material 5. After curing is completed, the surrounding frame 2.2 is removed as shown in FIG. It consists of the step of taking out the plastic mold 7.

In the above, the surrounding frame 2...2 is filled with plaster 3. Strength capable of withstanding the weight of plastic materials 5 and 6;
In addition, any suitable plate material can be used as long as it has permeation resistance.

Further, the surface of the surface plate 1 does not necessarily have to be in a strictly horizontal state, as will be clear from the explanation of the operation described below.

[Effect]

In this invention, when hemihydrate gypsum is injected into the surrounding frames 2, 2 on the surface plate 1, it has fluidity until it hardens, so that the surface of the surface plate is completely covered with the hemihydrate gypsum. When the thickness is constant, the surface of the hemihydrate gypsum 3 becomes a completely horizontal surface, and even if the surface plate 1 is tilted, the hemihydrate gypsum layer 3'
This is what is called leveling.

Therefore, when the matrix 4 is placed on the plaster N3' and the plastic raw materials 5 and 6 are injected, each layer is completely leveled and has a constant thickness.

The hard foamed plastic layer 6 forming the top layer of the mold 7 is provided for ease of surface grinding after hardening, resulting in improved workability.

After removing the mold 7, it is used as a press mold or a mold for injection.

〔effect〕

As explained above, this invention makes it possible to manufacture pattern molds for building materials from hard plastic, and at this time, the base of the mold is leveled by utilizing the fluidity of hemihydrate gypsum, making manufacturing extremely easy. It is easy to use, and molds of any size can be molded at any time by assembling a surrounding frame on the surface plate, so even if the mold is severely worn out, a corresponding mold can be molded at a sufficient supply speed. have an effect.

[Brief explanation of the drawing]

Figures 1 to 5 show the process of the method of this invention by γ/(B γ3(fJ

Claims (1)

[Claims] (1) A surrounding frame is erected on a surface plate, hemihydrate gypsum is poured into the surrounding frame, and after the hemihydrate gypsum hardens, a patterned matrix is placed on the gypsum layer. A hard plastic raw material is poured onto the mold and hardened, and a hard foamed plastic raw material is further poured onto the plastic raw material layer and foamed and hardened. After the entire hardening is completed, the surrounding frame is removed and the plastic raw material and the hard foamed plastic raw material are separated. A method for manufacturing pattern molds for inorganic building materials, characterized by comprising a step of taking out an integrated mold.