JPS5942625B2 - Reinforced decorative gypsum board - Google Patents

Description

[Detailed Description of the Invention] This invention covers the end face of a gypsum board having a cut decorative surface with a resin film, and effectively compensates for the deterioration of the impact resistance properties etc. of the cut decorative surface due to cutting. The present invention relates to providing a more excellent decorative bare-faced gypsum board having a glossy surface by covering the decorative bare face with eggplant.

Therefore, the mainstream of this type of gypsum board, particularly decorative boards, is when the base paper of the board is used as decorative paper, or when other paper, cloth, or other material is attached to the base paper of the board. In any of these cases, a planar decorative surface was exhibited, which was not necessarily satisfactory as a decorative board material.

Various efforts have been made to transform the flat decorative surface of such gypsum board into a decorative surface with a three-dimensional sense of mass, and one example of this is when forming the board. In the case where a decorative surface with an uneven shape is provided on the board surface, in addition to the case in which the decorative material is sprayed and placed on the base paper surface of the board, cutting of the formed board surface has been attempted.

The present invention relates to the disclosure of a new structure for a gypsum board having a decorative structure by such cutting, and the gist of the invention is applied to a part or the entire surface of one side or both sides of the gypsum board. The surface of the board is cut across the surface, and a resin film having an adhesive layer on the surface to be laminated is heated and expanded on the surface of the cutting board to adhere and harden, so that it adheres to and laminates on the surface of the cutting board. In view of this, the following specific embodiments and considerable design changes are planned in conjunction with the gist of the present invention. Hereinafter, details of the present invention will be explained with reference to a typical embodiment shown in the drawings. 1 is a common gypsum board core made of calcined gypsum mixed with sawdust or the like, and 2 is this core 1. A coating material that covers both sides of a board, and is generally made of base paper.

One side of such a general gypsum board is appropriately cut and a decorative recess 3 is provided, and the recess 3 can of course be provided in the form of a general vertical stripe or horizontal stripe. As such, a lattice-like shape, a shape of scattered circular depressions, or any other suitable shape is planned.

In addition, in the event that the "firmness" of the board deteriorates due to the cutting of the decorative depressions 3, it is possible to laminate and attach other board materials such as another plasterboard, plywood, resin board, etc. to the boat in advance. It was planned.

The cutting in cutting and cutting is done so that a part of the end surface of the board is exposed, and basically the covering material 2 such as board base paper is left behind, but such covering material 2 Of course, it is also planned to completely remove the rough surface of the base paper, and there are plans to use the rough surface of the base paper as a cosmetic surface, and also to create recesses 3 in this rough surface. It is something that was given. A thermoplastic resin film 4 made of pinyl chloride or the like is stretched on the cut end surface of such a gypsum board, and an adhesive layer 5 is preliminarily applied to the back surface of the film 4, that is, the surface to be bonded to the board surface. At the same time, the film 4 is mounted on the board surface, and the film 4 is pressed onto the board surface while heating at a temperature that matches the characteristics of each film used, and in this pressed state, it is cooled and hardened. The film 4 is attached closely to the shape of the board surface.

If the film 4 is made of vinyl chloride, it may be heated to a temperature of about 80° C., but it is also possible to use not only a thermoplastic resin film such as vinyl chloride but also a thermosetting resin, if necessary. Mukomata, in the description above, the method of stretching and pasting the film 4 by heat-pressure bonding includes the use of a male mold that matches the board surface, the use of rolls, and other methods, but the general Of course, a vacuum forming method would also be considered an effective method.

The present invention has the above-described characteristic configuration, in particular, by cutting the gypsum board surface and adhering a resin film to this cut surface, the lack of mass feeling in the vertical front gypsum board described above is solved. It is a product that reliably compensates for the loss of color and makes it possible to provide a makeup face with a three-dimensional effect.

In particular, in the decorative board according to the present invention, the exposed portion of the core 1 cut as a decorative surface is covered with the film 4 to protect the exposed portion, which is considered to have extremely weak impact resistance. Together with this, the overall function is to serve as a substitute for the covering material 2, and to effectively compensate for the deterioration in the strength of the board material due to cutting of the covering material 2.

In particular, in the sense of compensating the strength of the board material, it goes without saying that it is integrated with the board base paper left after cutting, significantly increasing the impact resistance properties of the board surface. As a result, the bending strength and tensile strength properties have been significantly increased, and the surface material properties of plasterboard, which generally has poor water resistance and weather resistance, have been improved, increasing weather resistance and water resistance. Was it particularly good? Ru.

Furthermore, when attaching the film 4, it is possible to bring out the material feel of the core 1 on the surface of the film 4, and it is possible to express not only a simple smooth face but also a subtle rough face with great ease. That's what I got.

Furthermore, the film 4 eliminates the tensile force on one side of the core 1 due to the expansion and contraction due to the rough decorative surface of the core 1 or the interposition of the depression 3, and the film 4 is attached and pasted. This effectively avoids the problem of board warping associated with this.

Of course, the surface of this film 4 is a decorative surface, and this film 4 is made of an appropriate color tone, pattern, or pattern, and a cloth is formed on the surface of the film 4. Considerable decorative surface configurations such as attaching a base are planned, and many decorative surface configurations different from the decorative surface made of board base paper in gypsum board are possible.

As mentioned above, the present invention utilizes gypsum board, which has a reputation as a partitioning material with excellent fire resistance, heat insulation, and sound insulation properties, and also that the board is extremely inexpensive as a building material and has excellent workability. It was specially devised on the premise that the processing cost would be extremely low, and the purpose was to provide inexpensive mass production of a board material with excellent material properties and an elegant decorative surface.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the manufacturing state of a board that is a typical embodiment of the present invention, Fig. 2 is an enlarged sectional view of the same main part, Fig. 3 is a cutaway perspective view of the main part, Fig. 4 and FIG. 5 is a sectional view showing another embodiment. In the figure, 1...core, 2...covering material, 3...recess, 4...film, 5...adhesive layer are shown.

Claims (1)

[Claims] 1. Cutting a part or the entire surface of one side or both sides of a gypsum board, and applying an adhesive layer to the laminated adhesive surface on the cut board surface. 1. A reinforced decorative gypsum board characterized in that a resin film comprising the above-mentioned resin film is heated and stretched to adhere and harden so that the resin film adheres to and is laminated on the surface of the cut board. 2. The reinforced decorative gypsum board according to claim 1, wherein the cut surface is an uneven surface. 3. The reinforced decorative gypsum board according to claim 1, characterized in that the film is stretched under pressure against the gypsum board surface. 4. The reinforced decorative gypsum board according to claim 1, wherein the film is expanded by vacuum expansion.