JPS593437B2 - Inorganic composite board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention aims to improve the adhesion of a composite plate, especially a surface material made of a molded thin metal plate that lacks adhesion between an inorganic layer and such an inorganic layer, from a synthetic resin foam. The present invention relates to an inorganic composite board that is reinforced with mountain-like blocks and is also lightweight.

In general, noncombustible panels have a structure in which a formed body made of gypsum board or foamed concrete is held between formed metal plates, or the metal plate and the formed body are integrated with adhesive.

However, panels with this type of configuration had the following drawbacks. That is, it was necessary to manufacture a molded body to serve as a core material in a so-called mold, which has poor productivity, and then cut it into dimensions according to the intended use. An expensive adhesive was indispensable for integrating the two molded bodies and the metal plate.

In a panel in which three molded bodies are mechanically held between five metal plates, the metal plates expand and contract due to heat, causing the molded bodies to fall off.

4. Since the molded product is heavy, panels made of it as a core material are also very heavy and are easily destroyed by impact.

The noncombustible panel 3 lacked strength because it had a structure in which the molded body and the metal plate were integrally formed.

In order to eliminate such drawbacks, the present invention makes the surface material also serve as a mold, and integrates the inorganic layer and the surface material with lumps of synthetic resin foam fixed and scattered on the back surface of the surface material. In addition, the mechanical strength is improved by reducing the total weight of the inorganic material layer and integrating the inorganic material layer between the surface material and the back material as a sandwich structure. This paper proposes an inorganic composite board that can continuously produce blocks and inorganic layers. 0 Below, one embodiment of an inorganic composite board (hereinafter simply referred to as a board) according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing a typical example of the board, in which 1 is a surface material made of a thin metal plate formed into a predetermined shape. That is, the i5 surface material 1 has a main body part 5 having a concave cross section and consisting of a decorative surface 2 and side walls 3 and 4 with both side edges thereof bent inward, and an insertion edge 6 with the lower end of the side wall 3 projecting outward. A female type connection having a male type connecting part l having a shape, a U-shaped insertion groove 8 formed by bending the lower end of the side wall 4 inwardly, and a female type connecting part 9 having a lower edge extending outward. It is composed of the section ID. Reference numeral 11 denotes a mass made of synthetic resin foam formed into a mountain shape as shown in FIG.

Particularly, the mass 11 is made by discharging the synthetic resin foam raw material onto the back surface 2a of the decorative surface, foaming it, and integrating it with the surface material 1 through self-adhesion at that time. In addition, lump 1
1 expands from the back surface of the decorative surface toward a sheet-like object to be described later, and has a cross-sectional area that becomes smaller as it approaches the sheet-like object from the back surface 2a, and has dimensions smaller than the thickness T of the main body portion 5. It was formed in In addition, the lump u mainly reduces the total volume of the inorganic material layer 12, which serves as the core material, to reduce its weight, and also has a strong anchoring function to integrate the surface material 1 and the inorganic material layer 12. It is useful for achieving this goal. The most suitable material for this mass 11 is foamable polyurethane resin. The inorganic material layer 12 is made of an inorganic material such as gypsum hemihydrate or cement that solidifies by reacting with water, a water-soluble resin such as urea resin or epoxy resin, water, a crosslinking agent, a crosslinking accelerator, a hardening agent for the water-soluble resin, Curing accelerator, inorganic coagulation accelerator,
Additives such as foaming aids are added and mixed, air or warm air is mixed into foaming agents such as various surfactants and animal protein-based foaming agents provided separately, and foam is created by mechanical stirring. The mixture and foam are further stirred, a slurry-like composition is filled into the main body part 5, and the composition is cured, and serves as a core material. To explain further, an example of a specific composition of the inorganic material layer 12 is as follows. That is, cellulose acetate 0.3% by weight 98% sulfuric acid
1.0% by weight protein foaming agent
0.7% by weight water 16
．． 0% by weight urea nitrate 0.5% by weight
Potassium nitrate 0.3% by weight Sulfur monochloride 0.2% by weight mixed aqueous solution (hereinafter referred to as solution A), urea resin initial condensate 1
0.0% by weight urea 1.5% by weight magnesium chloride 0.4% by weight Sodium nitrite 0.1% by weight Sodium nitrate
0.5% water by weight
Mixed aqueous solution consisting of 22.5% by weight (hereinafter referred to as liquid B), Shirasu balloon 0.5% by weight barlite, 0.5% by weight hemihydrate
It consists of an additive (hereinafter referred to as additive C) consisting of 45.0% by weight.

In addition, in order to discharge the composition onto the surface material, air is supplied to the liquid A, and it is foamed by a mechanical stirring means to produce a foam having a certain viscosity Df). Next, the liquid B and the additive C are mixed, and the stirred composition and the foamed composition are mixed and stirred to form a slurry and discharged to a predetermined position. 1
3 covers the back side of the inorganic material layer 12 with a sheet-like material, and the boat itself has a sandwich structure to significantly strengthen its mechanical strength.

For example, it is made of one or more of asphalt felt, asbestos sheet, plastic sheet, etc. What has been described above is only one embodiment of the present invention,
The inorganic agent layer 12 contains fibrous materials (carbon whiskers, wood wool,
It is also possible to contain synthetic fibers), string-like materials (hemp, synthetic fibers), net-like materials, styrene beads, and synthetic resin foam chips.

In particular, when styrene beads or the like are added, it is useful for weight reduction. As described above, the board according to the present invention has the characteristic that the mechanical strength of the board is significantly improved because the inorganic material layer is sandwiched between the four surface materials and the sheet-like material. @By using a block of synthetic resin foam to integrate the surface material and the inorganic layer, the weight of the port can be significantly reduced, and it also prevents the surface material and the inorganic layer from peeling off. If a mass made of synthetic resin foam is continuously formed on the decorative surface back of the surface material that also serves as O-type, an inorganic material layer is continuously supplied, a sheet-like material is laminated on top of the mass, and the material is cured. Because of its high quality, inorganic composite plates can be manufactured continuously.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of an inorganic composite board according to the present invention, and FIG. 2 is an explanatory view showing a state in which lumps are scattered and fixed to the surface material, which is the main part of the composite board. 1...Surface material, 11...Lump, 12...
...Inorganic material layer.

Claims (1)

[Claims] 1. Decorative surface material consisting of a main body whose cross-section is concave by bending both edges of the decorative surface inwardly, and a thin metal plate with male and female connecting portions protruding outward from both edges of the main body. A large number of lumps made of synthetic resin foam are dispersed and fixed on the front and back sides,
The space between the lumps is filled with an inorganic material layer, and the back side of the inorganic material layer is covered with a sheet-like material to constitute these constituent materials in one piece, and the above-mentioned lumps discharge raw materials onto the back side of the decorative surface. , an inorganic composite board which is foamed and fixed to the back surface by self-adhesive properties during foaming, and is formed into a cross section that expands into a mountain shape from the decorative surface toward the sheet-like object. .