JPS63278836A - Inorganic decorative material - Google Patents

Abstract

PURPOSE:To improve processability, by laminating a thin plate of a natural stone on a surface of an inorganic board. CONSTITUTION:A thin plate 1 of a natural stone 1 is laminated on a surface of an inorganic board 2 through an adhesive layer 3. The thin plate of the natural stone whose thickness is about 2-4mm is prepared by cutting such natural stones as a marble, a granite and so on. As the inorganic board 2, foamed cement plates or fiber plates whose main component are inorganic fibers such as rock wool, glass fibers and so on can be cited.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an inorganic decorative material used as interior and exterior materials for walls, ceilings, etc.

[Background technology]

Natural stones such as marble and granite are used as interior and exterior materials to make buildings beautiful and luxurious. However, natural stone is heavy and has poor workability.
There are problems with strength and it is also expensive. There was also a problem with insulation.

On the other hand, there are artificial decorative materials such as rock wool that are coated with a water-based coating. Such artificial decorative materials have no problems in terms of heat insulation, etc., but have problems in terms of design effects and water resistance.

[Purpose of the invention]

In view of these circumstances, it is an object of the present invention to provide an inorganic decorative material that is inexpensive, has good workability, and has the aesthetic appearance and characteristics of natural stone.

[Disclosure of the invention]

In order to achieve the above object, the present invention provides an inorganic decorative material in which thin plates of natural stone are laminated on the surface of an inorganic board.

Hereinafter, embodiments of the present invention will be explained in detail with reference to the accompanying drawings.

FIG. 1 is a side cross-section of one embodiment of the inorganic decorative material according to the present invention. As shown in FIG. They are laminated with an adhesive layer 3 in between.

The natural stone thin plate 1 is extremely thin, about 2 to 4 pieces thick, and is formed by cutting (thinly slicing) natural stone such as marble or granite.

The cutting method is as long as it can form a thin piece as described above, but is not limited to (for example, cutting with the raw natural stone immersed in a liquid bath containing abrasive grains). Preferably. By cutting in a liquid bath, the heat generated during cutting can be dissipated, and the occurrence of cranks due to heat can be prevented.

The inorganic board is not particularly limited.

For example, a foamed cement board or a fiberboard mainly made of inorganic fibers such as rock wool or glass fibers may be used.

The adhesive forming the adhesive layer is not particularly limited as long as it has good adhesion to the thin plate 1 and the inorganic board 2.

As described above, the inorganic decorative material according to the present invention has a thin plate of natural stone adhered to its surface, so it has the design effect of natural stone, similar to the conventional case of using only natural stone. Therefore, if it is used for interior and exterior materials in the same way as natural stone alone, buildings can be made to look beautiful and luxurious. Furthermore, the weight can be reduced to 1/3 or less compared to the conventional method, and workability is improved. Further, the end face of the inorganic board can be easily formed into a solid structure as shown in FIG. 2 or a tangled structure as shown in FIG. 3. If such processing is applied, the workability will be further improved. It is also inexpensive because less expensive natural stone is used. Incidentally, if a traditional stone made only of natural stone were subjected to the above-mentioned actual processing, a large number of derivative products would be generated and the product would be extremely expensive.

Next, examples will be explained in detail.

(Example 1) A granite thin plate having a thickness of 311I was formed by cutting granite. This granite thin plate was attached to a foamed cement board with a thickness of 17 mm via an adhesive to obtain an inorganic decorative granite material.

(Example 2) Granite was cut to form a thin granite plate with a thickness of 3 mm. This thin granite plate was attached to a rock wool board with a thickness of 12 square meters via an adhesive to obtain an inorganic decorative material with granite decoration.

The density, thermal conductivity, and bending strength of the inorganic decorative material obtained in Example 1 and the granite plate material having a thickness of 20 mm as Comparative Example 1 were measured, and the results are shown in Table 1.

Compared to Comparative Example 1, which is the stone itself, it has a lower density and is superior in thermal conductivity and bending strength. Therefore, it can be seen that the workability is good (and the insulation effect is excellent when used as an interior/exterior material).In Example 1, the density of the thin board is 2.7, and the density of the inorganic board is 0. It was 6.

Next, as Comparative Example 2, a rock wool decorative board with a thickness of 15 mm, which had been embossed on the surface and was further water-based painted, was prepared, and this and the inorganic decorative material obtained in Example 2 each had a surface hardness of 1. Bending fracture load 2 The water absorption rate from the surface was measured, and the results are shown in Table 2. The surface hardness was measured using a thread-wound hardness meter, and the hardness under normal conditions and the hardness after a water absorption test were measured. Bending fracture strength is JISA
1408 test method was used. The water absorption rate from the surface was determined by measuring the water absorption amount before and after water absorption at a portion 3 am from the surface layer, and dividing the increase after water absorption by the water absorption amount before water absorption.

Table 2 As shown in Table 2, the inorganic decorative material according to the present invention has a surface with the hardness of conventional natural stone and also has excellent water resistance.

The inorganic decorative material according to the present invention is not limited to the above embodiments. For example, in the above embodiment, the natural stone thin plate is attached to one side of the inorganic board, but it may be attached to both sides.

〔Effect of the invention〕

As described above, the inorganic decorative material according to the present invention has a thin plate of natural stone laminated on the surface of an inorganic board.
It is inexpensive and easy to construct. Moreover, it has the aesthetic beauty of natural stone. It also has excellent heat insulation and water resistance.

[Brief explanation of the drawing]

Figure 1 is a side sectional view of one embodiment of the inorganic decorative material according to the present invention, Figure 2 is a side sectional view of another embodiment, and Figures 3 and 3 are side sectional views of another embodiment. FIG.

Claims (3)

[Claims] (1) An inorganic decorative material made by laminating thin sheets of natural stone on the surface of an inorganic board. (2) The inorganic decorative material according to claim 1, wherein the inorganic board is formed of foamed cement. (3) The inorganic decorative material according to claim 1, wherein the inorganic board is formed of inorganic fiber reinforced cement.