JPH0688242B2 - Wood composite board and manufacturing method thereof - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a building material used for a wall surface, a floor surface, etc. of a house, and specifically to a wood composite material obtained by combining different wood materials.

[Conventional technology]

Conventionally, as a building material for the purpose of soundproofing and heat insulation used on the wall surface or floor surface of a house, a cork board material in which cork particles are formed into a desired thickness is used, or wood plywood formed by coagulating wood chips. Sheets containing metal such as lead and lead are often used, and they are given an important role for houses, especially multi-story houses with two or more stories or multi-story houses.

[Problems to be solved by the invention]

However, the cork board material described above has insufficient rigidity because the cork bark, which is the material thereof, is an assembly of fine independent air cells, and cannot maintain a stable dimension against external factors such as humidity and temperature, and contracts and bends. It has the drawback that it has to be solved, causing problems such as warpage.

Further, the latter wood plywood is liable to have brittleness due to high hardness because the wood chip itself lacks flexibility, and has a major defect that it lacks cushioning properties and is weak against compression / impact and lacks workability. Further, the above-mentioned wood plywood has a drawback that it cannot be used directly on the surface because it lacks in high-grade feeling and inferior feeling and lacks in decorativeness.

Further, the sheet containing metal or the like is expensive and heavy, and has a drawback that it is against the weight reduction of the house.

[Means for solving problems]

The present invention provides a wood composite board which eliminates such drawbacks, is lightweight, has sufficient strength, and can exhibit a large soundproof and heat insulating effect at a low price.

Hereinafter, a detailed description will be given with reference to the drawings.

As shown in FIG. 1, the present invention is a wood composite board A having both soundproofing and heat insulation, in which the cork grain 1 and the wood chip 2 each having an adhesive attached are layers for different specific gravity.
1a and the wood chip layer 2a are integrally formed.

In the method of manufacturing the wood composite board A, an adhesive is applied to each of the cork grain 1 and the wood chip 2 crushed to an appropriate grain size, and then a means such as vibration or effusion is added. By using the difference in specific gravity, the cork grain layer 1a and the wood chip layer 2a, which are different layers for specific gravity, are divided into layers, which are molded and integrally formed into two or more layers as shown in FIG. Is characterized by.

In addition, by attaching an adhesive to the surface of the wood composite board A integrally formed in the layered form and cork grains 1 or wood chips 2 different from the surface material 1a or 2a, and further supplying an appropriate amount to re-integrate, It is possible to obtain a plurality of multi-layered sandwich-structured wood composite boards A2 as shown in FIG.

[Action]

The present invention was developed as a structure that maximizes the properties of cork wood made of fine independent air bubbles and wood chips made of hard fibrous material, and provides an excellent sound insulation effect and appropriate cushioning and protection. It is possible to obtain vibration and heat insulation effects.

In other words, for soundproofing and heat insulation, it is more effective to use a structure in which multiple different materials with different vibration absorption and thermal conductivity are used for composite soundproofing and heat insulation, rather than using a single insulating material at once. be able to.

Therefore, according to the present invention, the specific gravity distribution is achieved by applying vibration to the cork grain 1 and the wood chip 2 which are mixed by adhering an adhesive or by spraying them into a mold having a desired shape, and cork as shown in FIG. By forming a layer of the grain layer 1a and the wood chip layer 2a and integrally molding this, it is possible to obtain a wood composite board A1 having a clear layer structure. Since the members absorb each other and cancel each other, the sound insulating and heat insulating effect is remarkably improved. In other words, regarding soundproofing / vibration prevention, each layer member 1a ・ 2a with such a difference in hardness and density corresponds to both high and low sound frequencies, and it is expected to have a wide range of soundproofing and vibration-proofing effect. it can.

〔Example〕

In order to form the above-mentioned layer structure into more layers, the cork grain 1 or the wood chip 2 which is the material opposite to the surface side material 1a or 2a is supplied to the two-layer structure formed by the above method. By remolding, a wood composite board A having a multi-layer structure as shown in FIG. 2 can be easily obtained, and in the multi-layer structure, a further large soundproof and heat insulating effect is brought about due to the difference in the hardness and the density of successive layer members.

〔The invention's effect〕

INDUSTRIAL APPLICABILITY As described above, the present invention achieves a strong soundproofing and heat insulating effect with an extremely simple layered structure formed by combining a woody material having a large number of air bubbles and a woody piece, and has excellent workability and workability. It is a wooden composite board that is an ideal building material that also combines the above and a manufacturing method thereof.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a wood composite board of the present invention. FIG. 2 is a sectional view showing another embodiment of the present invention. A: wood composite board, 1 ... cork grain, 1a ... cork grain layer, 2 ... wood chip, 2a ... wood chip layer

Claims (2)

[Claims] 1. A wood composite board characterized in that a cork grain 1 and a wood chip chip 2 each having an adhesive attached thereto are formed as a layer having a specific gravity different from each other and are integrally formed on a cork grain layer 1a and a wood chip chip layer 2a. 2. An adhesive is applied to each of the cork grain 1 and the wood chip 2 which have been crushed to an appropriate grain size, and then a means such as vibration or effusion is taken to make use of the difference in specific gravity to determine the specific gravity. A method for producing a wood composite board, characterized in that a cork grain layer (1a) and a wood chip chip layer (2a), which are layers, are divided into layers, which are molded and integrally formed into two or more layers.