JPH11151709A - Preparation of inorganic plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for preparing continuously an inorg. plate with macadam. SOLUTION: In preparing an inorg. plate integrally having macadam on the whole face of one side, the macadam 4 are scattered on a conveyer belt 2 elevating with a slope in the moving direction. In addition, while an uncured inorg. plate 6 is placed on the macadam 4 face moving on the belt 2 and is moved, the uncured inorg. plate 6 and the macadam are pressed to integrate them in a body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an inorganic plate. More specifically, the invention of this application relates to a method for producing a decorative inorganic plate useful as an outer wall member or an outer member of a house or the like.

[0002]

2. Description of the Related Art Conventionally, as an outer wall of a house or the like or a surface member of an outer structure, a decorative inorganic plate has been known.
For example, a decorative inorganic plate in which crushed stone is integrally attached to the entire surface on one side is also widely used. As a method of manufacturing such an inorganic plate with crushed stone, a method of injecting the raw material of the inorganic plate into a formwork laid with crushed stone on the bottom surface and curing and forming the inorganic plate together with the crushed stone, crushed stone on the surface of the uncured inorganic plate. When an inorganic plate is formed by a spread method or a centrifugal method, a method of integrally forming crushed stone on one side of the inorganic plate is used.

[0003]

However, the production of the inorganic plate with crushed stone by the conventional method as described above is based on a so-called continuous batch system, and is not sufficient in terms of productivity. . The invention of this application has been made in view of the circumstances as described above, and solves the problems of the conventional production method and provides a new method capable of continuously producing an inorganic plate with crushed stone. That may be the purpose.

[0004]

Means for Solving the Problems The invention of this application is to solve the above-mentioned problem. In the production of an inorganic plate having crushed stones integrally on one side of the entire surface, the invention is applied to a conveyor belt which rises and inclines in the moving direction. Disclosed is a method for producing an inorganic plate, which comprises: crushing stones, pressing the uncured inorganic plate and the crushed stone while loading and moving the uncured inorganic plate on a crushed stone surface moving by a belt. .

[0005] Further, in the method of this application, one of the preferable embodiments is to make the crushed stone scattered surface of the conveyor belt sticky.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The method of the invention of this application can be carried out, for example, by an apparatus configuration as exemplified in FIG. That is, in this apparatus, the transport belt (2) continuously circulating by the drive roll (1)
The crushed stone (4) is sprayed on the conveyor belt (2) from the crushed stone supply container (3) disposed above one end of the crushed stone. At this time, the conveyor belt (2) is inclined upward in the moving direction, and the excess crushed stones (40) among the crushed stones spread on the conveyor belt (2) become inclined surfaces (20) of the conveyor belt (2). ), And the crushed stone (4) is evenly spread on the conveyor belt (2), and moves to the next step. The crushed stone (40) that has slipped off the inclined surface (20) of the conveyor belt (2) is stored in the crushed stone recovery container (5), and is returned to the crushed stone supply container (3) again.

[0007] In order to spray the crushed stone (4) evenly on the conveyor belt (2) and to remove the extra crushed stone (40), for example, an appropriate material is selected according to the type and shape of the crushed stone (4). May be selected. Alternatively, the surface of the conveyor belt (2) may be provided with adhesiveness. In this case, the crushed stone (4) adhered to the conveyor belt (2)
Only the crushed stones (4) are transferred to the next step, and excess crushed stones (40) on these crushed stones (4) can be efficiently removed.
The adhesion to the conveyor belt (2) can be performed by, for example, applying an adhesive containing starch, methylcellulose, or the like to the conveyor belt (2).

[0008] The uncured inorganic plate (6) such as a green sheet is then placed on the conveyor belt (2) on which the crushed stone (4) is evenly dispersed. In the case of the example shown in FIG. 1, the uncured inorganic plate (6) is extruded by an extruder (7), moves with a crushed stone (4) on a conveyor belt (2), and is pressed by a pressing roll (8). ) And the conveyor belt (2), the crushed stone (4) is integrated by pressing. The uncured inorganic plate (6) having the crushed stone (4) adhered to one side in this way is
It is cut into a predetermined size by a cutter (9), cured and dried in accordance with a standard method, thereby completing an inorganic plate with crushed stone. In addition, as for the uncured inorganic plate (6), an uncured inorganic plate created by a method other than extrusion molding may be sequentially placed on the transport belt (2). However, it is preferable to use an extruder (7) because continuous production is possible.

Examples of the inorganic plate include a cement plate and a reinforced cement plate. As the reinforced cement plate, for example, a reinforcing fiber material such as pulp or asbestos or an additive material such as beads is kneaded with cement. Can be exemplified. As the crushed stone (4), natural stone, synthetic stone, or the like can be appropriately selected and used, and the size, shape, color tone, and the like can be adjusted as appropriate.

Of course, the implementation of the method of the present invention is not limited to the configuration of the apparatus shown in FIG. 1, and it goes without saying that various aspects of the details are possible. Hereinafter, the present invention will be described more specifically with reference to examples.

[0011]

EXAMPLE An inorganic plate in which crushed stone was integrally adhered to the entire surface on one side was manufactured by using the apparatus whose configuration is illustrated in FIG. The uncured inorganic plate (6) was extruded from an extruder (7) and placed on a conveyor belt (2) on which crushed stone (4) was sprayed. The inorganic plate is a fiber reinforced cement plate having the following composition,
The material kneaded with the Irish mixer was filled in an extruder (7), and extruded in a size of 12 cm in thickness and 45 cm in width.

Composition of fiber reinforced cement board: Cement 100 parts by weight Silica powder 100 parts by weight Pulp (LBKP) 9 parts by weight Ethylene beads 3 parts by weight Methylcellulose 1 part by weight Water 80 parts by weight Crushed stone (4) is a natural stone having an average diameter of 3 mm Was used, and the crushed stones (40) were evenly sprayed on a conveyor belt (2) coated with an adhesive on the surface, and the excess crushed stones (40) were dropped into a collection container (5).

The uncured inorganic plate (6) and the crushed stone (4) were press-integrated by a pressing roll (8) and a conveyor belt (2), and then cut to a length of 1800 mm by a cutter (9). The cut uncured inorganic plate (60) is loaded on a receiving plate (10), cured in a steam curing tank at 40 ° C. for one day, cured in a 170 ° C. autoclave for 12 hours, cured, and crushed. Was manufactured.

The completed inorganic plate had crushed stones (4) uniformly and firmly integrated on the entire surface on one side, and the strength and design were equal to or higher than the products obtained by the conventional method.

[0015]

As described above in detail, according to the invention of this application, it is possible to continuously manufacture an inorganic plate with crushed stone. By improving the productivity, it becomes possible to provide an inorganic plate with crushed stone at a low price.

[Brief description of the drawings]

FIG. 1 is a schematic view illustrating the configuration of an apparatus for carrying out a manufacturing method according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drive roll 2 Conveyor belt 3 Crushed stone supply container 4, 40 Crushed stone 5 Crushed stone collection container 6, 60 Uncured inorganic plate 7 Extrusion molding machine 8 Pressing roll 9 Cutter 10 Receiving plate

Claims (2)

[Claims] 1. In the production of an inorganic plate having crushed stones integrally on the entire surface on one side, crushed stones are sprayed on a conveyor belt which is inclined upward in the moving direction, and uncured inorganic plates are placed on the crushed stone surface moved by the belt. A method for manufacturing an inorganic plate, comprising unifying an uncured inorganic plate and crushed stone while pressing and moving the plate. 2. The method for producing an inorganic plate according to claim 1, wherein the surface of the conveyor belt on which the crushed stone is scattered is made sticky.