JPH06108607A - Board for building - Google Patents

Abstract

PURPOSE:To obtain the board with excellent fireproof and soundproof properties, by a method wherein an inorganic noncombustible material is formed from both fine grains obtained by crushing eggshells in pieces and a binder, and is held between two paper-made boards, and they are fastened each other. CONSTITUTION:An inorganic noncombustible material 1 solidified in board form is formed from fine grains (a) obtained by crushing eggshells to pieces and a binder (b) such as cement. This inorganic noncombustible material 1 is held between noncombustible or nonflammable paper-made boards 2 and they are fastened each other. Therefore, inexpensive building boards can be obtained using the eggshells effectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction board using egg shells such as eggs obtained in large quantities as an inorganic noncombustible material.

[0002]

2. Description of the Related Art In modern society, animal nutrition sources such as chicken eggs are industrially produced in large quantities and consumed in large quantities. However, it is possible to avoid the phenomenon that a large amount of unwanted eggshells, which cannot be directly used as food, are generated. Absent. Of course, some are crushed and used as feed, fertilizer or soil conditioner, and are also used as abrasives and fillers such as bricks and tiles. Not going to
Most are currently dumped.

[0003]

By the way, the egg shell contains calcium carbonate as its main component, and also contains magnesium carbonate, calcium phosphate and magnesium phosphate, is nonflammable and has a thickness of about 0.2 to 0.4 mm. Therefore, the pulverization and micronization process is extremely simple.

As described above, egg shells that are generated in large quantities and are discarded in large quantities may pollute and destroy the natural environment and are not preferable for protecting a clean earth. It is an urgent task to use eggshells effectively and to review them as an inorganic resource.

[0005]

The present invention has been made by paying attention to the above points, and a fine egg shell grain obtained by finely crushing an egg shell containing calcium carbonate as a main component is treated with a binder. It is to obtain a construction board characterized by interposing and fixing as an inorganic non-combustible material between two non-combustible or flame-retardant paper board bodies, which makes it possible to effectively use waste eggshells. It is intended to be used.

[0006]

[Function] It can be widely used as an alternative to gypsum board that has been generally used as a building material for various buildings.
The paper board body which is non-combustible or flame-retardant against fire and the like prevents the spread of fire, and the inorganic non-combustible material composed of fine eggshell grains is also an inorganic material, and thus exhibits a non-combustible effect. Further, it also has soundproofing and heat insulating properties, and can be widely used as a decorative board by providing a beautiful decorative finish on the surface of the paper board.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, 1 indicates an inorganic noncombustible material. The inorganic incombustible material 1 is obtained by solidifying and molding in a plate shape with fine egg shell grains a obtained by finely crushing egg shells of chicken eggs and a binder b such as cement. And fine egg shell grain a
It is better to carry out the crushing treatment after washing and removing the eggshell membrane, and the fine powders may have different sizes, but if they are uniform, the solidification and joining treatment is easier.

Reference numerals 2 and 2 denote a pair of front and rear non-combustible or flame-retardant paper board bodies, and a thickness of about 4 mm to 1 is provided between the paper board bodies 2 and 2.
The inorganic noncombustible material 1 of about 0 mm is interposed and fixed. It should be noted that a rectangle having a size ratio of 6: 3 is most preferable, but the ratio is not limited in any way.

By the way, although the case where cement is used as the binder b of the inorganic incombustible material 1 is shown, a flame-retardant resin adhesive of another organic compound, such as an acrylic copolymer, resorcin resin, or unsaturated Polyester resin can also be used.

The non-combustible or flame-retardant paper board 2 may be a laminated structure of non-combustible or flame-retardant paper such as glass fiber or synthetic fiber paper. It can be obtained by mixing with unbleached sulfite pulp.

When used as a decorative surface, the paper board body 2 may be finished beautifully by means such as printing or adhering a decorative sheet so that it can be used as a decorative material. .

According to this embodiment, the inorganic incombustible material 1 is blended with finely divided eggshell grains a, which are finely crushed egg shells, and is firmly fixed with a binder b such as cement. Since the sandwich structure is held by the paper board bodies 2 and 2, it has excellent fire resistance, heat resistance, sound insulation, heat retention, etc., and has a very wide range of uses as a building material.

Since the egg waste, which is called the eggshell, is effectively used, it helps protect the natural environment and cleans the earth.

[0014]

EFFECTS OF THE INVENTION According to the present invention, a large amount of eggshells can be utilized as an inorganic noncombustible material for boards as an inorganic resource without being discarded, so that it is possible to prevent destruction and pollution of the natural environment and to make it like gypsum board. It has the effect that it can be used as an alternative building material that exhibits various non-combustible or flame-retardant effects.

Further, since the eggshell itself is a kind of waste, the material can be obtained at a low cost, and therefore, there is an advantage that it can be provided at a low cost.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a building board according to the present invention.

FIG. 2 is a partially enlarged sectional view of the above.

[Explanation of symbols]

 1 Inorganic non-combustible material 2 Paper board a Fine egg shell grain b Binder

Claims (1)

[Claims] 1. A fine egg shell grain obtained by finely crushing an egg shell containing calcium carbonate as a main component is fixed as an inorganic non-combustible material between two non-combustible or flame-retardant paper board bodies by using a binder. A construction board characterized by being made up of: