JPH11179713A - Inorganic plate and manufacturing thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To positively and simply obtain the waterproofness by providing a waterproof sheet integrally with a plate body in about the middle of its plate thickness direction in such a manner that the plate body protrudes from the end face. SOLUTION: A plate body 1 is formed of an inorganic plate obtained by blending cement such as Portland cement, fly ash cement or blast furnace cement as a principal component with a reinforcing material such as an aggregate of a crushed stone such as granite or serpentine and silica flour or the like or pulp powder or the like, and mineral fibers such as cellulose pulp fiber or asbestos as an auxiliary component. In addition, a waterproof sheet 2 made up of a plastic sheet such as polypropylene which protrudes from the end face, is arranged in about the middle, of the plate thickness direction, of the plate body 1, then is shaped by pressing and at the same time, is dehydrated, and further, is left alone in an autoclave, if necessary, at normal temperatures. After that, the autoclave is filled with steam to perform a wet heat curing process at a specified temperature so that the waterproof sheet 2 is integrally laminated with the plate body 1. Thus it is possible to easily and positively ensure the waterproofness of a joint part between the plate bodies 1 due to the waterproof effect of the waterproof sheet 2 positioned at the joint part between the plate bodies 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inorganic plate and a method for producing the same, and more specifically, to an inorganic plate useful for use as a building plate such as an outer wall material, a tile material, and an outer member, and a method for producing the same. It is about the method.

[0002]

2. Description of the Related Art As an inorganic plate mainly composed of cement, which is useful for a building plate such as an outer wall material, a tile material, and an outer structure material, it has been conventionally required to secure waterproofness between the plate bodies. It has been known that a lapping work is performed, or an end face of the same plate body is subjected to a boring process, and further, a waterproof rubber process is performed.

[0003]

However, in the case of such an inorganic plate and a method for producing the same, in the case of laminating, the design is restricted, the design is low, and the joints between the plate bodies are not provided. Since the waterproofness is still low, an extra material is required only for the overlapping portion in order to sufficiently secure the waterproofness, which is troublesome.

[0004] In addition, when a joint jig is processed and waterproof rubber processing is performed, although a waterproof treatment is performed by waterproof rubber at the joint jig, a joint portion between the plate bodies, that is, a shape of the joint jig is provided. For this reason, it was difficult to obtain sufficient waterproofness with waterproof rubber.

The present invention has been made in order to eliminate the above-mentioned disadvantages, and an object of the present invention is to provide an inorganic plate capable of reliably and easily obtaining waterproofness, and a method for producing the same. It is in.

[0006]

According to a first aspect of the present invention, there is provided an inorganic plate in which the plate body (1) is mainly composed of cement. The waterproof sheet (2) is integrally provided so as to protrude from the end face in the middle.

According to a second aspect of the present invention, there is provided a method for manufacturing an inorganic plate, wherein the plate body (1) is mainly composed of cement. After arranging the waterproof sheet (2) so as to protrude from the end face, the waterproof sheet (2) and the plate body (1) are integrated by press molding.

According to a third aspect of the present invention, there is provided a method of manufacturing an inorganic plate, wherein the waterproof sheet (2) has an aperture ratio before the waterproof sheet (2) is integrated with the plate body (1). It is characterized in that 50% or more of the holes are opened.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.

FIGS. 1A and 1B are schematic views showing an inorganic plate according to an embodiment of the present invention, wherein FIG. 1A is a perspective view, FIG. 1B is a partial top view, and FIG. It is.

As shown in FIGS. 1A to 1C, the inorganic plate of the present invention is an inorganic plate in which the plate body (1) is mainly composed of cement.
The waterproof sheet (2) is integrally provided so as to protrude from the end face in the middle of the plate thickness direction.

The plate body (1) is mainly composed of cement, and in addition to this cement,
Aggregate is blended, and if necessary, reinforcing materials and fibers are blended as auxiliary components.

As the above cement, for example, portland cement, fly ash cement, blast furnace cement and the like are used.

As the above-mentioned aggregate, crushed stones such as granite and serpentine, silica stone powder, shirasu balloon, glass balloon, silica, pearlite, sand and beads are used.

[0015] Pulp powder or the like is usually used as a reinforcing material to be added as required. further,
As the fibers, for example, cellulose-based pulp fibers, mineral fibers such as asbestos, organic resin-based fibers such as polypropylene and vinylon, glass fibers, carbon fibers, and metal fibers can be used.

As shown in FIGS. 1 (a) to 1 (c), the waterproof sheet (2) is integrally provided so as to protrude from the end surface in the middle of the plate body (1) in the plate thickness direction. It is. As the waterproof sheet (2), for example, a sheet generally used as a roof base material may be used, or another waterproof sheet may be used. Specifically, a plastic sheet such as polypropylene is used as the waterproof sheet (2).

If necessary, the above-mentioned plate body (1) is subjected to press forming so as to also serve as dehydration. The rate is low, usually about 50 to 70 wt%, but is not limited to this, and can be set freely according to the degree of press molding time and the like.

Further, after press molding, curing is carried out to obtain an inorganic plate. The curing is carried out in an autoclave, which is cured at a temperature of 150 to 200 ° C. for 7 to 15 hours. It is cured to obtain an inorganic plate.

Before the autoclave curing, if necessary, the plate body (1) is allowed to stand at room temperature for 2 to 5 hours, and then at a temperature of 50 to 90 ° C.
It is also possible to adopt a method such as performing wet heat curing for 0 to 100 hours.

According to the present invention, since the waterproof sheet (2) is integrally provided so as to protrude from the end surface in the thickness direction of the plate body (1) by adopting such a configuration, the plate body (1) is provided. ) A waterproof sheet (2) is positioned between the board bodies (1), that is, at the joints between the board bodies (1). Due to the waterproof effect of the waterproof sheet (2), the waterproof sheet (2) is connected between the board bodies (1). Waterproofness can be obtained easily and reliably.

That is, the present invention can surely and easily obtain waterproofness.

As shown in FIGS. 1 (a) to 1 (c), the method for producing an inorganic plate of the present invention comprises the steps of:
After the waterproof sheet (2) is provided so as to protrude from the end face in the middle of the plate body (1) in the thickness direction, the waterproof sheet (2) and the plate body (1) are formed by press molding. Are integrated.

According to the present invention, by adopting such a manufacturing method, the waterproof sheet (2) is integrally provided so as to protrude from the end surface in the middle of the plate body (1) in the thickness direction.
A waterproof sheet (2) is located between the plate bodies (1), that is, at the joints between the plate bodies (1), and the waterproof effect of the waterproof sheet (2) allows the plate bodies (1) to be connected to each other. The waterproof property at the joint is easily and reliably obtained.

That is, the production method of the present invention is
In addition, waterproofness can be easily obtained.

In particular, as shown in FIG. 1B, before the waterproof sheet (2) is integrated with the plate body (1), the waterproof sheet (2) has an aperture ratio of 50% or more. In this case, a material mainly composed of cement of the plate body (1) enters into the holes formed in the waterproof sheet (2), and the waterproof sheet (2) is formed by press molding. And the plate body (1) can be more easily and reliably integrated.

It is assumed that the waterproof sheet (2) has an opening ratio of 50%.
%, The above effect cannot be sufficiently obtained.

According to the present invention, the waterproof sheet (2) is located at the joint between the plate bodies (1), and the waterproof effect of the waterproof sheet (2) allows the joint part between the plate bodies (1). It is needless to say that the projecting portion of the waterproof sheet (2) is not opened because the waterproofing property is easily and reliably obtained.

[0028]

Examples of the present invention will be described below.

Example 1 Portland cement 100 parts by weight, fly ash 5
0 parts by weight, 3 parts by weight of vinylon fiber having a length of 4 mm and water 6
After adding 5 parts by weight, the material kneaded with an omni mixer was subjected to a dehydration press to supply the same material as a plate body (1).

Thereafter, a circular hole having a diameter of 15 mm was formed in a 50 μm-thick polypropylene waterproof sheet (2) so as to have a porosity of 60%, as shown in FIG. 1B. The waterproof sheet (2) was provided so that the portion where no hole was formed protruded from the end face of the plate body (1). Then, the same material was further supplied so that the waterproof sheet (2) was positioned in the middle of the plate body (1) in the plate thickness direction as shown in FIGS. 1 (a) and 1 (c).

Further, after this, the maximum pressure is 50 kg / cm
^2. Press-forming is performed at a pressure holding time of 1.0 second for 12 seconds / cycle while also dehydrating, and the waterproof sheet (2) and the plate body (1) are integrated. The thickness is 10 mm and the width is 700 m.
m, a plate having a length of 400 mm was obtained. This plate was steam cured at 60 ° C. for 24 hours to obtain an inorganic plate.

A plurality of the obtained inorganic plates were installed at a gradient of 4 dimensions and subjected to a rainfall test at a wind speed of 40 m / min. As a result, no water penetrated into the back side of the inorganic plates. Thus, it can be said that the waterproof sheet (2) is completely waterproof.

The first embodiment will be described with reference to the above description.
As can be seen from the above, in the conventional construction, there was a possibility that moisture might enter the back side of the inorganic plate from the joint portion such as a joint portion, but the inorganic plate of the present invention and the method of manufacturing the same According to this, since the waterproof sheet (2) is integrally provided so as to protrude from the end face in the middle of the plate body (1) in the thickness direction, between the plate bodies (1), that is, between the plate bodies (1). The waterproof sheet (2) is located at the seam portion, and the waterproof effect of the waterproof sheet (2) makes it possible to easily and reliably obtain waterproofness at the seam portion between the plate bodies (1). It can be said that there is.

That is, it can be said that the present invention can surely and easily obtain waterproofness.

[0035]

According to the inorganic plate according to the first aspect of the present invention, since the waterproof sheet (2) is integrally provided so as to protrude from the end face in the middle of the plate body (1) in the thickness direction, the plate body is provided. (1) The waterproof sheet (2) is located between the board bodies (1), that is, at the joints between the board bodies (1), and the waterproof effect of the waterproof sheet (2) allows the joint portions between the board bodies (1) to be provided. The waterproofness is easily and reliably obtained.

That is, according to the present invention, waterproofness can be reliably and easily obtained.

According to the method of manufacturing an inorganic plate according to the second aspect of the present invention, the waterproof sheet (2) is integrally provided so as to protrude from the end surface in the thickness direction of the plate body (1). Between the main bodies (1), that is, the plate main body (1)
The waterproof sheet (2) is located at the joint between the two, and the waterproof effect of the waterproof sheet (2) allows the board body (1)
The waterproofness between the joints can be easily and reliably obtained.

That is, the production method of the present invention is
In addition, waterproofness can be easily obtained.

According to the method for manufacturing an inorganic plate according to claim 3 of the present invention, in addition to the case described in claim 2, the cement of the plate body (1) is filled into the holes formed in the waterproof sheet (2). The material as the main component enters, and the waterproof sheet (2) and the plate body (1) can be more easily and reliably integrated by press molding.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an inorganic plate according to one embodiment of the present invention, wherein (a) is a perspective view, (b) is a top view partially transparent, and (c) is a side view.

[Explanation of symbols]

 1 Board body 2 Tarpaulin

Claims (3)

[Claims] 1. An inorganic plate in which a plate main body is mainly composed of cement, wherein a waterproof sheet is integrally provided so as to protrude from an end surface in the middle of a thickness direction of the plate main body. Board. 2. A method of manufacturing an inorganic plate whose main body is cement, wherein a waterproof sheet is provided so as to protrude from an end surface in the middle of a thickness direction of the main body of the plate, and then a press forming method is performed. Wherein the waterproof sheet and the plate body are integrated. 3. The inorganic plate according to claim 2, wherein a hole having an opening ratio of 50% or more is formed in the waterproof sheet before the waterproof sheet and the plate body are integrated. Production method.