JPH0351582B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a gypsum board that exposes the fleshy side of the material to the outside and has a decorative surface full of mass, and in particular, the fleshy side is made of fibers or slag slag. The present invention relates to a method for manufacturing reinforced decorative gypsum board.

[Prior art and its problems] Conventional gypsum decorative boards have generally been designed to have the base paper of the board itself serve as a decoration, and apart from the appearance and color, they have not had a good sense of mass or three-dimensionality. It was extremely inferior in quality.

From this point of view, various attempts have been made to create uneven patterns on the surface of gypsum board, but one method, which involves pouring into a mold during molding, has significantly poor formability and is difficult to create a wide variety of products. It was difficult.

In addition, in the ex-post method of cutting the surface of the finished gypsum board, the base paper of the board on the cutting surface got in the way and prevented accurate cutting.
It was not necessarily possible to form a good uneven decorative surface. In particular, in this cutting method, the shearing force between the base paper and the fleshy material is completely different, so the fleshy part of the board is completely destroyed when the base paper is cut, creating the desired sharp uneven pattern. was considered almost impossible. In addition, in such cutting methods, the cut surface is directly exposed to the outside, so the cut portion, which is an extremely fragile constituent material, often collapses, and the board cannot be used for a long period of time or used on impact-generating areas. It was considered impossible.

[Means for Solving the Problems] This invention was devised especially in view of the inconveniences in the prior art, and is capable of making a flat decorative surface of a gypsum board full of mass and three-dimensionality. It adopts a cutting method that has good formability and is suitable for mass production, and also completely protects the cut surface during this cutting, and has at least one of fibers or slag slag as mixed aggregate. A part of one surface of a reinforced gypsum board having base paper on both sides is made into an uneven surface by cutting the base paper and the fleshy part, and the uncut surface of the reinforced gypsum board and the above-mentioned cutting. To provide a method for manufacturing a gypsum decorative board in which board base paper is left on the convex surface of the uneven surface.

[Example] The details of this invention will be described below with reference to a typical example shown in the drawings. 1 is a plasterboard fleshy part, and 2 is a board base paper pasted on both sides of this plasterboard fleshy part 1. The fleshy part 1 is made of fibrous materials mainly composed of calcined gypsum, admixtures such as sawdust, and alkali-resistant glass fibers as aggregates, rock wool, asbestos, and other mineral fibers (in some cases, synthetic It is constructed by mixing resin fibers and pulp fibers (the use of resin fibers and pulp fibers are also planned) and slag slag simultaneously or alternatively, and the board base paper 2 is planned to use other equivalent coating materials. It is.

The gypsum board having such a structure is made into a monolayer or a laminate, and further made into a plywood board with other board materials, and then the board base paper 2 and the fleshy part 1 are cut out. The simple and flat appearance has been completely redesigned.

In particular, in this cutting process, cutting can be done in the form of a lattice as shown in Fig. 1, as well as in the form of grooves as shown in Fig. 2, or in the form of circles, squares, or other concave shapes as shown in Fig. 3. In this case, as shown in FIG. 4, various designs and different cutting widths, especially different depths, and other considerable cutting methods are planned.

[Effect of the invention] In this invention, the fleshy part 1 of the gypsum board is reinforced with aggregate such as cellulose and slag slag,
The brittleness of the fleshy part 1 has been eliminated and the impact resistance has been significantly strengthened, and when cutting the board base paper 2, it has become possible to cut "squares" of the board base paper 2 without damaging the fleshy part in any way. , also this board base paper 2
This eliminates any collapse of the fleshy part on the underside, making it possible to carve cleanly.

In addition, by cutting the base paper 2 without force, it is possible to carve a relatively fine shape, and it is possible to create a so-called mesh-like or sculpture-like decorative surface. .

Furthermore, the gypsum decorative board produced by this manufacturing method is one in which the calcined gypsum is tightly bonded with cellulose or mineral slag, and the impact resistance and brittleness are completely eliminated, and there is no possibility of wall collapse, especially on the cut surface. Since this problem has been completely eliminated, there is no possibility of damage to the cut decorative surface, sagging, or other accidents even during long-term use.

As mentioned above, the purpose of the present invention is to facilitate the production of a decorative cut surface, to make the produced decorative surface extremely sharp, and to disclose a method for producing a decorative gypsum board having excellent strength of the produced decorative surface. That is.

[Brief explanation of drawings]

1 to 3 are perspective views showing various cut decorative surfaces that are typical embodiments of the present invention, and FIG. 4 is a sectional view of a gypsum decorative board. In the figure, 1... board fleshy part, 2... board base paper.

Claims (1)

[Claims] 1. A part of one surface of a reinforced gypsum board having at least one of fibers or slag as mixed aggregate and base paper on both sides is made into an uneven surface by cutting the base paper and the fleshy part. A method for manufacturing a decorative gypsum board, characterized in that board base paper is left on the uncut surface of the reinforced gypsum board and the convex surface of the cut uneven surface.