JPH0631842A - Composite panel - Google Patents

Abstract

(57) [Summary] [Purpose] The objective is to significantly improve the peel resistance when laminating and integrating a decorative board material on the surface of an inorganic board material. [Structure] The surface decorative plate member 4 is bonded to the surface of a porous inorganic plate member 1 having a large number of micropores opening on the surface through an adhesive 3 layer, and the surface decorative plate member 4 penetrates into the air bubbles opening on the surface. An adhesive effect is exerted by the adhesive 3 to enhance peel strength.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite panel, and more particularly to a composite panel having a porous inorganic plate material as a substrate and a decorative plate material integrally bonded to the surface thereof.

[0002]

2. Description of the Related Art Conventionally, an inorganic plate material formed mainly of cement or the like has been widely used as a building plate material. This kind of construction board material can be mass-produced of the same material, and since it does not consume natural resources such as wood, it has an advantage that it is also advantageous in terms of nature protection. However, the inorganic board material is heavier than the wood board material, and if left as it is, the ground color is an achromatic color of grey-white to grey-black, so the designability as a building material is poor, and since it has water absorption, it is an outdoor building. The plate material has a drawback that it has a problem of water resistance. In order to solve such a problem, it is attempted to reduce the weight by making the inorganic plate material porous, and to integrally provide various decorative layers on the surface of the plate material to impart water resistance also as a design property addition. ing. Then, as a means for providing the decorative layer, there is a case where marble or porcelain tile is adhered with an adhesive.

[0003]

[Problems of the Prior Art] When the above decorative plate is adhered to make up, there is a concern that peeling may occur at the bonding interface due to the difference in shrinkage ratio between the decorative plate and the substrate, and the outer wall of a high-rise building may be damaged. If it is used as, it may affect the penetration of rainwater, etc., so that peeling is likely to be promoted and there is a risk of danger. However, in order to eliminate such problems, the front surface of the inorganic plate material and the back surface of the decorative plate are formed with engaging portions that are mated in a male-female relationship with each other, and then these are bonded and then bonded. Although a method of bonding with an agent has been proposed, in order to carry out these, it is necessary to integrally form an engaging portion in each laminated material, and as a result of an increase in manufacturing steps, there is a drawback that a product becomes expensive. there were.

[0004]

SUMMARY OF THE INVENTION In view of the above problems, the present invention has a practical problem of peeling when a decorative plate is laminated on the surface of an inorganic plate material with an adhesive, by significantly improving the adhesive strength of the decorative plate. It was made with the purpose of preventing it to the extent that there is no

[0005]

That is, in the composite panel A of the present invention, the surface decorative plate member 4 is provided on the surface of the porous inorganic plate member 1 having a large number of fine pores opened on the surface with the adhesive 3 layers interposed therebetween. It is characterized by being bonded.

[0006]

[Function] Porous inorganic plate material 1 used in the present invention
As the material, an inorganic porous particle such as perlite, an expanded polystyrene particle, an expanded building material obtained by mixing particles such as microcapsules, or an expanded building material obtained by adding an air entraining agent is used.

The surface of this porous inorganic plate material 1 is ground smoothly so that a part of the bubbles 2 ... 2 contained therein are opened to the ground surface, thereby having a large number of micropores, and the distribution thereof. The surface of the corresponding porous state.

When the adhesive 3 is applied to such a surface,
As shown in the figure, as a result of the adhesive 3 flowing into the opening and hardening as it is, this becomes an anchor portion, and the adhesive strength with the surface decorative plate material 4 is significantly improved.

[0009]

Embodiments of the present invention will be described below. FIG. 1 is an enlarged sectional view of an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of another embodiment.

Example 1 Surface 1 of a porous inorganic plate material 1 having a thickness of 2 cm and a length and width of 10 cm formed by using expanded polystyrene particles having an average particle diameter of 0.8 mm
A was ground flat, and a large number of minute openings were formed by the bubbles 2 ... 2 inside the surface 1A. After grinding powder on the ground surface 1A is removed by cleaning with an air nozzle (not shown), the adhesive 3 is squeezed and applied with a doctor knife, and then a ceramic plate tile with a thickness of 3 mm and a length and width of 5 cm is used as the decorative plate material 4. A composite panel A was obtained by adhering to the central portion of the porous inorganic plate material 1 and curing it.

Example 2 A composite decorative board was formed in the same manner as in Example 1 except that the inorganic plate material 1 foamed using microcapsules having a particle size of 500 μm was used.

Example 3 As the decorative board material 4 laminated on the surface of the porous inorganic board material 1, a porcelain tile having a concave and convex stripe 4A for supporting an adhesive as shown in FIG. 2 was used, and the adhesive 3 had the concave and convex stripes. A composite panel A was obtained in the same manner as in Example 1 except that the coating was applied to the thickness of 4A.

Example 4 As the decorative plate material 4 laminated on the surface of the porous inorganic plate material 1, a porcelain tile having an uneven line 4A for supporting an adhesive as shown in FIG. 2 was used, and the adhesive 3 had the above-mentioned uneven line. A composite panel A was obtained in the same manner as in Example 2 except that the coating was applied to the thickness of 4A.

Comparative Example 1 A composite panel A was obtained in the same manner as in Example 1 except that an inorganic plate material which was not porous was used.

About Examples 1 to 4 and Comparative Example 1 20
After curing and curing for 14 days under the conditions of ℃ ・ 65% RH, peeling in the vertical direction of the surface of the decorative sheet material 3 after each standing condition of 20 ℃ normal condition, 80 ℃ hot water immersion, high humidity condition, and water immersion. When the strength was measured, the results shown in Table 1 were obtained. The test conditions are shown in Table 1.

[0016]

[Table 1]

In Table 1, all the peeling of the decorative plate material 3 occurred in the matrix portion near the surface of the porous inorganic plate material 1, and there was no peeling due to the destruction of the adhesive layer 3. As is clear from Table 1, the examples of the present invention exhibited a peel strength three times as high as the normal tensile strength as compared with the case where the non-porous inorganic plate material (Comparative Example 1) was used, and the heat deterioration and moisture resistance ,
In each of the water resistance tests, it was found that good peel resistance was exhibited in spite of stricter test conditions than the comparative examples.

[0018]

INDUSTRIAL APPLICABILITY As described above, the composite panel of the present invention has a structure in which the air bubbles of the porous inorganic plate material are opened to the surface, the adhesive is allowed to penetrate into the inside thereof, and the surface decorative board material is bonded with the adhesive. Therefore, the surface decorative sheet material has a remarkably high fastening strength and excellent peel resistance.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view of an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of another embodiment of the present invention.

[Explanation of symbols]

 A Composite panel 1 Porous inorganic plate material 2 Bubbles 3 Adhesive 4 Decorative plate material

Claims (1)

[Claims] 1. A composite panel, characterized in that a surface decorative plate member (4) is adhered to the surface of a porous inorganic plate member (1) having a large number of micropores opened on the surface through three layers of adhesive.