JPH06136912A - Stone material - Google Patents

Abstract

PURPOSE:To prevent the occurrence of warping of a stone material. CONSTITUTION:A stone material 2 and an inorganic plate 3 are laminated. A plurality of slit grooves 4 are formed on the one surface 3b of the inorganic plate 3 on the stone material 2 side. The mutual intervals of the respective slit grooves are determined so as to be close at the end parts 3a of the inorganic plate 3. Thereby, the amount of coat of an adhesive on the end parts 3a of the inorganic plate 3 can be increased, so that the absorption of water from the end parts 3a of the inorganic plate 3 is hardly caused. Thus, the occurrence of warping of the stone material due to water absorption can be sufficiently prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stone material on which inorganic plates are laminated.

[0002]

2. Description of the Related Art Generally, natural stones or artificial stones are used for interiors of buildings due to their high strength and designability. However, the natural stones are heavy and have a large variation in strength and stains. However, there are drawbacks such as poor workability. In order to improve such drawbacks, techniques for cutting natural stone into thin pieces have been developed. However, the strength of stone alone is weak, and cracks, chips, etc. occur, making it difficult to use as a building material. Therefore, conventionally, an inorganic plate is laminated on one surface of a stone material with an adhesive layer interposed between the stone material and the stone material, which is used for construction as a composite stone panel.

[0003]

By the way, the conventional stone material is lightweight and has high strength by laminating the inorganic plates, but on the other hand, since it is easy to absorb water from the end of the inorganic plate, the inorganic plate is There is a problem that the end portion of the stone absorbs water and the stone material is easily warped. The present invention has been made in view of the above conventional problems, and an object thereof is to provide a stone material capable of preventing the occurrence of warpage due to water absorption.

[0004]

In order to solve the above problems, according to the present invention, a stone material 2 and an inorganic plate 3 are laminated. A plurality of slit grooves 4 are formed on one surface 2b of the inorganic plate 3 on the stone 2 side.
Is formed. It is characterized in that the intervals between the slit grooves 4 are densely set at the end 3a of the inorganic plate 3.

[0005]

According to the present invention, a plurality of slit grooves 4 are formed on the one surface 2b of the inorganic plate 3 on the stone 2 side, and the intervals between the slit grooves 4 are closely set at the ends 3a of the inorganic plate 3. Therefore, even when the stone material 2 and the inorganic plate 3 are laminated by using the adhesive, the adhesive enters the slit groove 4 to increase the amount of the adhesive applied to the end portion 3a of the inorganic plate 3. Therefore, the structure is such that it is difficult for water to be absorbed from the end portion 3a of the inorganic plate 3, and the occurrence of warpage of the stone can be sufficiently prevented.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In this embodiment, a composite stone material 1 in which an inorganic plate 3 is laminated with an adhesive agent on a stone material 2 obtained by slicing natural stone, artificial stone material, or the like is illustrated. In FIG. 1, the stone material 2 of the inorganic plate 3
A plurality of slit grooves 4 for absorbing the warp are formed on the one surface 2b on the side. And each slit groove 4
In consideration of the warp tendency of the composite stone material 1, the slit grooves 4 are formed so that the interval between the slit grooves 4 is wide at the central portion of the inorganic plate 3 and becomes gradually denser toward both end portions 3a.
As a result, the number of slit grooves 4 in the both end portions 3a of the inorganic plate 3 is denser than in the central portion. As the inorganic board 3, for example, a calcium silicate board or a fiber reinforced cement board is used.

Next, as an example of a method for producing the composite stone material 1, for example, 400 mm × 400 mm × 7 mm size stone material and 400 mm × 400 mm × 8 mm size flexible board are laminated with urethane adhesive to form 400 mm ×
A 400 mm × 15 mm composite stone material 1 is produced. At this time, a width of 2 mm to 3 m on the adhesive surface side of the flexible board
A slit groove having a depth of 3 mm and a depth of 3 mm to 4 mm is formed so as to become denser toward both ends. The amount of warpage (mm) per unit time due to water absorption of the composite stone material having a size of 400 mm × 400 mm manufactured in this way was investigated, and it was +0.03 mm after 5 minutes and +0.05 mm and 15 minutes after 10 minutes. + 0.07mm after passing, 3
It was +0.09 mm after 0 minutes. In contrast,
When the warp amount (mm) per unit time of the composite stone material in which the slit groove is not formed was investigated, it was +0.
05mm, + 0.08mm after 10 minutes, + 0.15mm after 15 minutes, +0.21 after 30 minutes
It was mm. Therefore, the amount of warpage is obviously smaller with the slit groove than with the slit groove,
It was confirmed that the slit groove has an effect of preventing warpage.

Further, in the present invention, since the slit groove 4 is made closer to both ends 3a of the inorganic plate 3, when the stone material 2 and the inorganic plate 3 are laminated by using the adhesive, the adhesive is slit. By entering the groove 4, the amount of adhesive applied becomes larger at the end portion 3a than at the central portion of the inorganic plate 3, water absorption from the end portion 3a of the inorganic plate 3 is blocked by the adhesive layer, and The advantage that the warpage of the composite stone material 1 can be sufficiently prevented is obtained.

Next, when the composite stone material 1 is attached to a wall surface of a building or the like, the conventional method is to apply a mortar coating method or an adhesive agent in which mortar is applied in a dumpling shape on the back surface of the composite stone material and is attached to the base material. There is an adhesive pressure-bonding method for applying a stone material by applying it to the entire surface of the base, but in either method, the adhesive strength is not sufficient until the mortar or adhesive is cured. Therefore, when installing on a wall at a high place,
It is necessary to use an instant adhesive or velcro for temporary fixing. Moreover, if the base material is not horizontal,
If the work is performed along the base material, the work will not be horizontal, and it will take time and effort to adjust the work depending on how the adhesive is applied, the application amount, and the puffing allowance.

On the other hand, according to the present invention, as shown in FIGS. 2 and 3, the nuts 5 are previously inserted and fixed at a plurality of positions of the inorganic plate 3, and the bolts 6 screwed into the nuts 5 at the time of construction. The metal fitting 7 is attached to the base material 8 using the nail 9. As a result, it is possible to adjust the unevenness with the base material 8 depending on the tightening condition of the bolt 6. As an example,
For example, by combining a stone material having a size of 600 mm × 900 mm × 7 mm and a flexible board having a size of 600 mm × 900 mm × 8 mm, 600 mm × 900 mm × 15
mm composite stone is made. At this time, the nut 5 is inserted and fixed by the above method. The weight of this composite stone material is 18 kg per sheet, and when it is applied to a wall surface, if it is applied using an adhesive or the like as in the conventional art, the position of the stone will be displaced due to the weight of the stone material before the adhesive is hardened. It was confirmed that the stone material can be installed without displacement when the metal fitting 7 is used for the method shown in FIG. In addition, the base material 8 can be removed by putting the bolt 6 in and out during the construction.
I was able to absorb the terrain and adjust the levelness.

[0011]

As described above, according to the present invention, a stone material and an inorganic plate are laminated, a plurality of slit grooves are formed on one surface of the inorganic plate on the stone material side, and the intervals between the slit grooves are the end portions of the inorganic plate. Since it is densely set in, even when the stone material and the inorganic plate are laminated using an adhesive, the amount of the adhesive increases at the end of the inorganic plate, The structure makes it difficult to absorb water. As a result, it is possible to prevent the warpage of the end portion of the stone material and to obtain a high-quality stone material.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a stone material used in an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing another embodiment of the present invention.

FIG. 3 is a cross-sectional view showing an example of mounting work of the stone material of FIG.

[Explanation of symbols]

 2 Stone 2a One side 3 Inorganic board 3a Edge 4 Slit groove

Claims (1)

[Claims] 1. A stone material and an inorganic plate are laminated, a plurality of slit grooves are formed on one surface of the inorganic plate on the stone material side, and the intervals between the slit grooves are closely set at the end portions of the inorganic plate. Stone material characterized by.