JPS6311503B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a building board with fibers implanted on its surface and a method for manufacturing the same, in which a short fiber layer 10 of short fibers 2 is formed on the surface of an inorganic board 1; A building board characterized in that a long fiber layer 11 of long fibers 3 is formed on the surface thereof is a specified invention. The short fibers 2 are fixed to the surface, and then the adhesive 8 is applied to the surface of the inorganic board 1 formed by hardening the raw board 4 to adhere the long fibers 3. Thereafter, the long fibers 3 are rolled with a spiral roll 5. The combined invention is a method for manufacturing building boards characterized by fluffing.

Conventionally, this type of building board with fibers implanted on its surface was manufactured by pasting fabric with fibers implanted on the surface of an inorganic board, etc. There was a problem that it did not have a solid appearance.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a building board that can provide a high-class appearance and a method for manufacturing the same.

The present invention will be explained in detail below with reference to Examples. The green board 4 is made of cement mixed with gypsum, etc., and as shown in FIG. 1, short fibers 2 are spread on the surface of the raw board 4 which is still soft after papermaking, and then shortened by pressing with a roll 6, a press, etc. The fibers 2 form a short fiber layer 10 integrally formed on the surface of the green board 4. The short fibers 2 can be, for example, synthetic fibers such as nylon, polyester, vinylon, etc., inorganic fibers such as glass fibers, carbon fibers, natural fibers such as viscoel fibers, hemp, etc., and are coarsely scattered on the surface of the raw board 4. It is something. Next, the raw board 4 is dried in a dryer 7 to harden the raw board 4. At this time, the short fibers 2 are fixed to the surface of the raw board 4. Next, an adhesive 8 such as a urea resin adhesive, a phenol resin adhesive, or a polyvinyl alcohol adhesive is applied to the surface of the inorganic board 1 formed by hardening the green board 4, and then the long fibers 3 are sprinkled. Then, the long fibers 3 are bonded to the adhesive 8. Long fiber 3
The short fibers 2 may be the same as or different from the above-mentioned short fibers 2, and a sufficient amount of the long fibers 3 are bonded so that the bare surface of the inorganic board 1 is not visible. After that, this long fiber 3 is rolled into a spiral roll 5.
The fibers are fluffed to form a long fiber layer 11, and then cut into predetermined dimensions to obtain building boards.

Therefore, the building board manufactured as described above has a short fiber layer 10 and a long fiber layer 11 formed on the surface of the inorganic board 1, and is used as an interior material, etc., and has a decorative and beautiful surface. Although it has excellent sound absorption properties and prevents surface condensation, the base of the long fibers 3 is surrounded and supported by the short fibers 2, making it difficult for the long fibers 3 to tilt and fall. In this case, the short fibers 2 are exposed on the surface and the bare surface of the inorganic board 1 is not directly exposed. Further, the short fibers 2 are partially embedded and fixed inside the inorganic board 1, so that they do not easily come out from the inorganic board 1, and the long fibers 3 are also adhered to the short fibers 2. This allows for stronger adhesion to the inorganic board 1.

As mentioned above, in the specific invention of the present invention, since the short fiber layer and the long fiber layer are formed on the surface of the inorganic board, the base of the long fiber is surrounded and supported by the short fibers, so that it does not easily fall down. Moreover, even if the long fibers fall down, the short fibers will be visible on the surface without directly exposing the bare surface of the inorganic board, giving the building board a high-class feel. Further, the combined invention of the present invention is to scatter short fibers on the surface of the raw paperboard, to fix the short fibers to the surface as the raw board hardens, and then to adhere the long fibers to the surface of the inorganic board with an adhesive. Since the long fibers are fluffed with a spiral roll, the long fibers adhere to the short fibers that are firmly fixed to the raw board, making it possible to firmly adhere the long fibers to the inorganic board. Furthermore, it is possible to continuously perform the entire process from papermaking of raw boards to fluffing of long fibers, thereby increasing the productivity of building boards.

[Brief explanation of the drawing]

FIG. 1 is a schematic view showing the manufacturing process of an embodiment of the present invention, and FIG. 2 is a sectional view of the same. 1 is an inorganic board, 2 is a short fiber, 3 is a long fiber, 4 is a raw board, 5 is a spiral roll, 8 is an adhesive, 10
1 is a short fiber layer, and 11 is a long fiber layer.

Claims (1)

[Scope of Claims] 1. A building board characterized by forming a short fiber layer of short fibers on the surface of an inorganic board, and forming a long fiber layer of long fibers on the surface of this short fiber layer. 2. Sprinkle short fibers on the surface of the raw board to fix the short fibers to the surface as the raw board hardens, and then apply an adhesive to the surface of the inorganic board that will be formed by hardening the raw board. A manufacturing method for building boards, which is characterized by bonding long fibers together using a spiral roll, and then fluffing the long fibers using a spiral roll.