JPS5998955A - Building material and production thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a building material and a manufacturing method thereof.

Conventionally, construction materials have been manufactured by laminating decorative materials onto plywood such as plywood, and finishing the surface of the decorative materials. However, the construction materials obtained using this manufacturing method may be damaged after finishing the decorative surface or during construction.
Surface stains and scratches are likely to occur due to contact with other objects. Furthermore, construction materials also have the disadvantage of being susceptible to deformation such as warping due to changes in moisture content.

In view of these circumstances, the inventors have made extensive studies to eliminate these drawbacks. As a result, if the decorative surface is coated and protected with a resin film or the like after finishing, even if it comes into contact with other objects after finishing or during construction, the decorative surface will not be stained or scratched, and This invention was completed based on the prospect that warping and other deformations can be prevented at the same time.

That is, the first gist of this invention is a construction material characterized by having a decorative surface covered with a removable film, and the decorative material is pasted on plywood and the surface of the decorative material is finished. The second gist is a method for manufacturing construction materials, which is characterized by applying a film-forming agent that can form a peelable film.

This will be explained in detail below.

The decorative surface of the building material according to the present invention is protected by coating with a film. This film can be peeled off. As a film forming agent for forming such a film, an aqueous solution containing polyvinyl alcohol as a main component, which is called a "peelable sealer", is conveniently used, but is not limited thereto.

As described above, a synthetic resin is usually used as the main component of the film forming agent. Synthetic resins need to be able to be applied to the surface of decorative materials in the form of a solution or paste, and to form a strong film when dried to protect the decorative surface from stains, scratches, etc. Moreover, it is necessary that the film can be easily peeled off when the decorative surface of the building material needs to be sanded, such as after construction. There are no particular limitations on the resin as long as it satisfies these requirements. Among synthetic resins, partially saponified products of polyvinyl alcohol and vinyl acetate are preferably used because they have excellent film strength necessary for covering and protecting decorative surfaces, and have good peelability.

The building material according to the present invention is manufactured as follows. First, a decorative material such as a veneer is pasted onto a plywood such as plywood, which is a so-called veneer pasting process, and then the surface of the decorative material is, for example, raised.

Apply a surface finish such as painting or waxing. Next, a film forming agent is applied to this surface and dried to form a film. The architectural material whose surface has been coated with a removable film in this manner is subjected to secondary processing, etc., as required, and then put into use.

Since the decorative surface of the architectural material according to the present invention is coated with a peelable film, the decorative surface will not be stained or scratched even if it comes into contact with other objects during manufacturing, transportation, and construction. Furthermore, since this film is not affected by changes in water content, deformation such as warping can be prevented. and,
When this film is peeled off, the decorative surface is immediately exposed.

Examples will be described below.

〔Example〕

It was made into plywood, a contact material was attached, and the surface of the decorative material was lightly sanded to give it a raised appearance, then painted and finished with wax. A 10% aqueous solution of Gohsenol (Nippon Gosei Kagaku Co., Ltd.) as a film-forming agent was applied thinly to the finished surface, and then dried at around 80° C. to form a film.

In order to use the obtained construction materials for Japanese-style ceilings,
Secondary processing such as attaching rice seeds was performed. The product was then packaged, shipped, opened, and used on the ceiling. After the construction was completed, we checked the decorative surface and found no dirt or scratches at all. Furthermore, no deformities such as anti-shiri were observed.

Agent: Patent Attorney Takehiko Matsumoto

Claims (3)

[Claims] (1) A construction material whose decorative surface is coated with a removable film. (2) A method for producing architectural materials, which comprises applying a decorative material onto a base plate, finishing the surface of the decorative material, and then applying a film-forming agent capable of forming a removable film. (3) The method for producing a construction material according to claim 2, wherein the film forming agent is an aqueous polyvinyl alcohol solution.