JPS59184605A - Manufacture of relief decorative board - Google Patents

Abstract

(57) [Abstract] 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 method for manufacturing a relief decorative board, and more specifically, a relief decorative board of cement, plaster, etc. is manufactured by a simple method by manufacturing a relief model using a photocurable resin. It is about the method.

Conventionally, relief decorative boards have been manufactured by carving a material using human power or machinery, and using this as a relief model, molding is made from this as necessary to create a working mold. According to this method, it took time and money to manufacture the prototype, and it was not only difficult to make multiple prototypes of the same sculpture, but also difficult to reproduce complex or elaborate sculptures. Therefore, it is not suitable for manufacturing items that need to be mass-produced, items that require small-lot production of a wide variety of items, or those that are complex or elaborate as relief models.

The present invention has been made to improve the drawbacks of the conventional method for manufacturing relief decorative laminates, and significantly simplifies the manufacture of the prototype by using photocurable resin, which has become popular in the printing field in recent years. At the same time, it provides a method that dramatically increases the degree of freedom in relief Kawahara design.

In other words, by placing, for example, a photographic negative film or a photographic positive film having a portion that blocks or restricts light on a photocurable resin plate, a portion that blocks or restricts light is formed on the photocurable resin plate. and irradiate it with ultraviolet light.

After that, when a solvent is applied to the photocurable resin plate, the part of the photocurable resin plate where the light passes through the film, that is, the part of the photocurable resin plate that is exposed to the light, is cured, and the part of the photocurable resin plate that does not pass through the film, that is, the photocurable resin The parts of the plate that are not exposed to light are dissolved in the solvent, resulting in the formation of an uneven pattern on the photocurable resin plate.

You can use the photocurable resin plate with the uneven pattern as it is as a working mold and pour the cured slurry into it, or if necessary, use the photocurable resin plate with the uneven pattern as a prototype and use the conventional method. Separately, a working mold made of silicone rubber etc. is manufactured by making a mold using
A relief decorative board is produced by pouring a hardened slurry into this.

Hereinafter, the present invention will be explained in detail according to the manufacturing procedure of a relief decorative board.

A portion that blocks or restricts light is provided on the photocurable resin plate. Various methods can be considered for installing the part that blocks or restricts this light, but for example, a negative or positive film is created by taking a photograph of a design, the actual object, etc., and this is placed on a photocurable resin board. The resin plate may be placed on the resin plate, or a pattern may be applied directly onto the resin plate using paint that blocks or restricts light. When photographic negative film or positive film is used, it is possible to perform enlargement, reduction, composition, etc. at the film stage, so it is possible to freely adjust the pattern formed on the photocurable resin plate. Therefore, the degree of freedom in relief pattern design is infinitely large. Further, the photographic film may be a positive film, but whether a negative film is used may be selected as appropriate depending on whether the relief decorative board to be manufactured has a concave relief or a convex relief.

Next, when UV rays are irradiated for a certain period of time on a photocurable resin plate that has a part that blocks or restricts light, the parts of the photocurable resin plate that are exposed to light will harden, and the areas that are not exposed will not be cured, so they will not be exposed to the solvent. When the resin is dissolved and removed, an uneven pattern is formed on the resin plate.

Examples of photocurable resins that can be used in the present invention include Lunaflex (manufactured by Romoto Paint Kogyo), Elathlon (Tokyo Applied Chemical Industry Layer), and AI''R (manufactured by Asahi Kasei Industries). .

Furthermore, the term "photocurable resin plate" as referred to in the present invention includes a state in which a photocurable resin in a solution state is placed in a mold and appears to be plate-shaped.

The intensity of ultraviolet rays may be appropriately selected depending on the relationship with the resin used, the depth of unevenness, and the irradiation time, but it should be at least 400 W or more, preferably about 1 to 3 kW.

As the light source lamp, for example, a mercury lamp or a fluorescent lamp for photopolymerization can be used.

The required irradiation time is 1 to several minutes to obtain the required depth, but in the production of relief decorative laminates, it is necessary to obtain a depth of at least I fin to several tens of digits.

Either use the resin prototype thus manufactured as a working mold and pour a hardened slurry of cement, gypsum, resin, etc. into it, or manufacture a working mold from silicone rubber etc. from the resin prototype and use it as a working mold. A hardened slurry of cement, gypsum, resin, etc. is poured into the mold, followed by demolding and curing (
After drying and cutting, surface finishes such as painting and coating are applied as necessary to complete the relief decorative board.

According to the present invention as described above, there are the following effects.

(1) Relief prototypes can be easily made.

(2) Since the original design can be created using photos, it is not only possible to synthesize, modify, enlarge, reduce, etc. freely and easily, but also to create a screen on a computer display and take a photo of it. , even things that occur by chance can be considered as the original design.

Furthermore, by utilizing positive and negative films, both uneven and convex relief plates can be easily produced.

(3) Highly reproducible with intricate designs.

(4) It is easy to adjust the depth of the relief unevenness.

(5) Since the mold releasability from the cured product slurry is good and the mold is durable, the photocurable resin plate on which the uneven pattern is formed can be used as it is as a working mold.

As detailed above, the relief decorative board according to the present invention can be used in a variety of hardened materials depending on the application, and can be used as architectural materials such as wall materials and flooring materials, or as decorative boards, etc., with a wide range of new designs. It is hoped that it will be put to good use.

Examples are shown below.

, Example Using Elaslon manufactured by Tokyo Applied Chemical Industry Co., Ltd. as a photocurable resin, a photograph was taken of the pattern shown in FIG.
A positive film of x 150 am was prepared and placed on a photocurable resin plate cut to the same size as the film. Next, after irradiating the photocurable resin plate with a 400W fluorescent lamp for photopolymerization for 90 seconds, the film was removed and the resin surface was treated with a 0.16% caustic soda solution. It formed an uneven pattern with a maximum depth of two fins. After this, surround the resin plate with a frame and add 1 piece of glass fiber.
A gypsum slurry containing approximately 30% was poured into the mold, and molding was carried out for 30 minutes. After demolding, it was dried in a drying room at 40°C for 24 hours, and the surface was finished with a resin paint to complete the convex relief decorative board shown in Figure 2. In the figure, the white parts are convex parts.

4. Brief Description of the Drawings FIG. 1 is a plan view of the design used in the example, and FIG. 2 is a photograph showing a relief decorative board according to the present invention manufactured based on the same design.

Patent Applicant: Yakult Honsha Co., Ltd. Procedural Amendment Form August 22, 1980 "Mr. Kazuo Wakasugi, Commissioner of the Patent Office 1, Incident Indication: Patent Application No. 59366 of 1988 2,
Title of the invention: Relief decorative board manufacturing method 3, relationship with amendment party 41+ Patent applicant address: 1-19 Higashi-Shinbashi, Minato-ku, Tokyo
Name (68B) Yakuru Co., Ltd.; Head office July 26, 1982 (shipping date) 5. Brief description of drawings in the specification subject to amendment Drawing 6. Contents of the amendment (1) Page 9 of the specification The first row 1- is not shown and is a photograph. −
1 is corrected as "- is a view of the tooth t1." .

2nd day ;vinegar

Claims (1)

[Claims] In a method for manufacturing a relief decorative board made of cement, plaster, etc., a light-blocking or restricting portion is provided on a photocurable resin plate, and ultraviolet rays are irradiated onto the photocurable resin plate. An uneven pattern is formed on the surface of the curable resin plate, and the photocurable resin plate after the uneven pattern is used as a working mold, or the photocurable resin plate after the uneven pattern is used as a prototype, and a mold is made by a conventional method. A relief decorative board is manufactured by separately manufacturing a working mold made of silicone rubber, etc., and pouring a hardened slurry of cement, plaster, resin, etc. into these working molds. Method of manufacturing the board.