JPH0911214A - Production of inorganic panel material - Google Patents

Abstract

PURPOSE: To produce an inorg. panel material not generating the ply separation caused by freezing in winter and facilitated in its demolding. CONSTITUTION: An anhydrous granaular material 11 containing a hydraulic inorg. material and aggregate is formed in a form 12 and a slurry 13 containing the hydraulic inorg. material, aggregate and water is formed thereon and, succeedingly, an anhydrous granular material 14 containing the hydraulic inorg. material and aggregate is formed thereon and the whole is compressed from both surfaces thereof to be molded.

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 an inorganic board material which can be used as an outer wall material for construction.

[0002]

2. Description of the Related Art A multi-layered inorganic system prepared by preparing a plurality of slurries prepared by mixing a hydraulic inorganic material, an aggregate and water according to the application, forming these into layers, and press-molding from both sides A method of manufacturing a plate material is known.

[0003]

However, in this manufacturing method, since the upper layer slurry is formed after the film is formed on the surface of the lower layer slurry, the adhesion between the layers is poor, and when it is used in a cold area, it is not There is a problem that delamination occurs due to freezing and thawing. Further, since the slurry to be molded adheres to the mold, it is necessary to apply the mold release agent to the mold. If the mold release agent is not applied to the mold, the molded product will be removed at the time of demolding. There was a problem that some of them adhered and remained. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a method for producing an inorganic plate material that does not cause delamination due to factors such as freezing in winter and that allows easy release of a product. .

[0004]

According to the present invention, there is provided a semiconductor device comprising:
The method for producing an inorganic plate material described, after forming an anhydrous powder material containing a hydraulic inorganic material and aggregate in the mold,
A slurry containing a hydraulic inorganic material, an aggregate and water is formed thereon, and then an anhydrous powder material containing the hydraulic inorganic material and the aggregate is formed, and compression molding is performed from both front and back sides.

[0005]

In the method for producing an inorganic plate material according to claim 1, since the slurry and the water content of the slurry infiltrate into the dry powdery material to harden the powdery material, the interlaminar adhesion is improved and freezing.・ No delamination due to melting. Moreover, since the powdered and granular material containing no water is used as the front and back layers, the molded product does not adhere to the mold during pressing and demolding.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will now be described with reference to the accompanying drawings to provide an understanding of the present invention. Here, FIG. 1 is a process explanatory drawing of the manufacturing method of the inorganic type board | plate material which concerns on one Example of this invention.

As shown in FIG. 1 (A), a powder (granular material) 11 containing no fixed weight of water is put into a predetermined mold 12 using a suitable mesh screen (sifter) 10 and is formed. Make a certain thickness. In this case, the mold release agent is not applied inside the mold 12. The powder material 11 in this case is formed from powder materials such as cement, slag, calcium carbonate, wax, perlite, pulp, and mica. The mixing ratio is as shown in Table 1.

[0008]

[Table 1]

Here, cement acts as a binder, and slag, wax stone, perlite, and mica act as an aggregate. Calcium carbonate makes the overall color close to white, and the mica is used to form a black dot pattern. And since pulp works to connect each molded item,
Other synthetic resin fibers may be used.

Next, as shown in FIG. 1 (B), a fixed amount of the slurry 13 is put in from above to form a layer having a constant thickness. The compounding ingredients of this slurry 13 are also shown in Table 1, but water is added to sufficiently knead the respective ingredients to impart fluidity to the whole. And FIG.
As shown in (C), a certain amount of powdery granules 14 containing no water, which is the same component as the powdery granules 11, is supplied from above to perform forming.

Thereafter, as shown in FIG. 1 (D), the whole is placed on the lower mold 15 of the pressing device, and the upper mold 16 is lowered to perform compression molding. The pressing condition in this case is preferably the same as in the case of producing a conventional multilayer inorganic plate material using a slurry as a raw material, or is preferably a slightly higher pressure. After this, remove the inorganic plate material 17 from the form 12,
As shown in FIG. 1E, for example, a product that can be used as an outer wall material can be manufactured. In terms of strength, it was comparable to conventional products, and delamination due to freezing and thawing when used in cold regions was eliminated.

Although the above examples have been described by limiting the raw materials, it is of course possible to use other components as a blend.

[0013]

As is apparent from the above description, the method for producing an inorganic plate material according to claim 1 allows the slurry and the water content of the slurry to penetrate into the powder material to cure the powder material. Interlayer adhesion is improved. In addition, since the powder and granular materials that do not contain water are used as the front and back layers, when the mold is released from the mold, the molded product does not adhere to the mold, a good quality molded plate is obtained, and the mold release agent Can be omitted.

[Brief description of the drawings]

FIG. 1 is a process explanatory diagram of a method for manufacturing an inorganic plate material according to an embodiment of the present invention.

[Explanation of symbols]

 10 Screen 11 Powder / Granular Material 12 Formwork 13 Slurry 14 Powder / Granular Material 15 Lower Mold 16 Upper Mold 17 Inorganic Plate

Claims (1)

[Claims] 1. Forming an anhydrous powdery material containing a hydraulic inorganic material and an aggregate on a mold, and then forming a slurry containing the hydraulic inorganic material, an aggregate and water on it.
Subsequently, an anhydrous powder material containing a hydraulic inorganic material and an aggregate is formed, and compression molding is performed from both front and back sides.