JPH0886044A - Non-warping deformable building panel - Google Patents

Abstract

PURPOSE: To make it possible to absorb a differential expansion between a board and a surface material and prevent warping deformations of a panel positively by clamping an elastic body, such as a thick-walled rubber between the board and the surface material as a separator. CONSTITUTION: An elastic body 3 made of a thick-walled rubber or the like is clamped between a board 1 and a surface material 2, such as stones and tiles across the board or partially as a separator. The elastic body 3 is specified to provide a wall thickness which is capable of compensating for shear attributable to a differential expansion between the board 1 and the surface material 2 within an allowable shearing stress. Preferably, an elastic bonding agent 4 should be used for the joining between the elastic body 3, the board 1 and the surface material 2. As a result, the differential expansion between the board 1 and the surface material 2 attributable to dry shrinkage, water absorption expansion and differential coefficient of linear thermal expansion of the board 1 is absorbed with allowable shearing force of the elastic body 3 so that warping deformations of a building finishing panel may be inhibited positively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building finishing panel which does not warp.

[0002]

2. Description of the Related Art Conventionally, surface materials such as stones and tiles are pasted on the surface of various substrates such as cement-based substrates, artificial wood substrates, metal substrates (including honeycomb structure) and calcium silicate substrates for finishing. Various types of architectural finishing panels (walls, floors) have been proposed and put into practical use. With these products, it is possible to avoid warp deformation when there is a difference in expansion and contraction between the front side and the back side due to the dry shrinkage of the substrate, water absorption expansion, or the difference in the linear expansion coefficient between the surface material and the substrate. Absent. For such inconvenience, conventionally, in order to suppress the warp deformation due to the drying shrinkage of the substrate when a solid substrate (such as a mortar substrate, an artificial wood substrate or a calcium silicate substrate) is used, By providing a thin moisture-impermeable material with flexibility on the back surface or front and back surfaces, the moisture release imbalance on the front and back surfaces can be corrected to prevent warpage, or between the surface material and the substrate. By performing the bonding with the elastic adhesive, the warp deformation stress is compensated by the deformation of the elastic adhesive.

[0003]

However, although the former means is effective in preventing warpage due to the difference in moisture discharge, it is completely ineffective in warp deformation due to the difference in linear expansion coefficient. In addition, the latter means needs to have a sufficiently high adhesive thickness in order to achieve a predetermined compensation effect, but the thickness as an adhesive is naturally limited and cannot effectively function.

The present invention has been made in view of the above problems of the prior art. The object of the present invention is to reduce the dry shrinkage of the substrate, the water expansion and the linear expansion coefficient of the surface material and the substrate. An object of the present invention is to provide a building finishing panel that can reliably compensate for warpage deformation due to differences and the like.

[0005]

In order to achieve the above-mentioned object, the construction finishing panel which does not warp according to the present invention has a substrate and a surface on the whole or a part between the substrate and a surface material such as stone or tile. An elastic body, such as a thick rubber, is sandwiched between the materials so that shearing due to the difference in expansion and contraction is contained within the allowable shear stress.

[0006]

The difference in expansion and contraction between the substrate and the surface material caused by the drying shrinkage of the substrate, the water absorption expansion or the difference in the linear expansion coefficient can be absorbed by allowing the shearing force of the elastic body, and the warp deformation can be suppressed. Further, when an external force such as a hit or a collision is applied, the elastic body absorbs the shock, so that the surface material and the substrate are prevented from being destroyed, and at the same time, the effect of preventing the generation and the propagation of the sound due to the hit and the collision is also achieved. Be prepared.

[0007]

EXAMPLE An example will be described with reference to the drawings. In FIG. 1, a substrate 1 and a stone material selected from a cement-based substrate, an artificial wood substrate, a metal substrate (including a honeycomb structure), a calcium silicate substrate, and the like. , Polyisobutylene rubber, chloroprene rubber, butyl rubber, EPT rubber, SB
An elastic body 3 having a thickness capable of compensating the shear due to the expansion / contraction difference between the substrate 1 and the surface material 2 selected from R or the like within the allowable shear stress is mounted as a separator. It is preferable to use elastic adhesives 4 and 4 to bond the elastic body 3 to the substrate 1 and the surface material 2. a is full dressing, b
Indicates partial dressing.

FIG. 2 shows a mode in which the elastic body 3 compensates the stress due to the contraction and expansion of the substrate 1, where a is a large contraction of the substrate 1 with respect to the surface material 2, and b is a substrate with respect to the surface material 2. 1
Shows the expansion of each. In any case, the elastic body 3 absorbs the displacement difference 5 due to shear stress. Further, FIG. 3 shows a mode of compensating for the warp occurring in the substrate 1,
“A” indicates that the contraction on the back side is larger than that on the front side of the substrate 1, and “b” indicates that the expansion on the rear side is larger than that on the front side of the substrate 1. In either case, the elastic body stretches 6
Absorb the warp of the substrate 1.

[0009]

Since the present invention is configured as described above, it has the following effects. An industry-proven panel that does not warp is provided.

[Brief description of drawings]

1A and 1B are vertical sectional views of a building finishing panel of the present invention.

2A and 2B are vertical sectional views for explaining the compensating action of the building finishing panel of the present invention.

3A and 3B are vertical cross-sectional views for explaining the compensating action of the architectural finishing panel of the present invention.

[Explanation of symbols]

 1 substrate 2 surface material 3 elastic body 4 elastic adhesive 5 displacement difference 6 elongation of elastic body

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takayuki Inoue 1-5 Otsuka, Inzai-cho, Inba-gun, Chiba Incorporated Takenaka Corporation Technical Research Institute (72) Nobunao Murakami 1-chome, Otsuka, Inzai-cho, Inba-gun, Chiba No. 5 Incorporated Takenaka Corporation Technical Research Institute (72) Inventor Sadatoshi Ono 1-5 Otsuka, Inzai-cho, Inba-gun, Chiba Incorporated Takenaka Industrial Engineering Laboratory (72) Inventor Mikio Wakasugi Minamienkajima, Taisho-ku, Osaka 7-34-34, Osaka Cement Co., Ltd. (72) Inventor, Akio Sugiura 7-34, Minami-Enkajima, Taisho-ku, Osaka City, Osaka-Cement Co., Ltd. (72) Yasuo Kato, Sekigahara, Fuwa-gun, Gifu Prefecture 2682 Sekigai Stone Co., Ltd. Inside the company (72) Inventor Hideo Yatsu 4-20-26, Miyajimajima-dori, Miyakojima-ku, Osaka Sekigai Stone Co., Ltd. Inside the branch (72) Inventor Masafumi Achiha 1 in the first area of Funami-cho, Minato-ku, Nagoya City Toagosei Co., Ltd. Nagoya Research Institute (72) Inventor Shin Tanigawa 1 in the first area of Funami-cho, Minato-ku, Nagoya City Toagosei Co., Ltd. Inside the research institute (72) Inventor Takashi Nakatani 1 in the first place in Funami-cho, Minato-ku, Nagoya Toagosei Co., Ltd.

Claims (1)

[Claims] 1. A wall thickness that allows shearing due to expansion and contraction between the substrate and the surface material such as stone or tile to be within the allowable shear stress on the entire surface or part of the surface material such as the stone or tile. An architectural finish panel that does not warp and is characterized in that an elastic body such as rubber is sandwiched.