JPS5918148A - Manufacture of artificial marble - 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] Regarding the method.

Prior art related to the present invention includes the following. Japanese Patent Publication No. 5 3-2 0 5 2 8 describes a method for manufacturing artificial stone, but this method involves adhering and hardening a cement coloring agent to the surface of crushed particles of synthetic resin foam, which has poor compressive strength. It is impossible to use it as a device. Here, the equipment referred to in the present invention mainly refers to interior decorations such as trays, water basins, picture frames, clock frames, telephone stands, and other ornaments.

Further, Japanese Patent Publication No. 54-4886 describes a method for producing building materials using Oyaishi stone powder, but this is a limited patent relating to building materials made by solidifying Okamaishi powder with epoxy thread synthetic resin. Furthermore, Japanese Patent Publication No. 54-21852 differs from the present invention in its method of manufacturing a decorative board. And the patent publication No. 55-43422 uses synthetic marble, but AI! This relates to a transparent product made by solidifying (OH)3 with an acrylic resin.

Next, Japanese Patent Publication No. 57-5413 relates to a method of coating with an ultraviolet curable resin.

Further, JP-A-54-127922 discloses a method for producing artificial stone, but only discloses an example in which white cement and clay are kneaded with wood chips, and a colored pigment is used for surface coating. Finally, JP-A-55-116653 discloses a method for manufacturing artificial marble, in which a filler is mixed with an acrylic emulsion when cement is hydrated.

However, these prior art techniques were mainly intended for use in building materials and the like, and were not intended for use in devices such as the present invention. For this reason, there was little colored stone powder such as marble, and many of them were inferior to the marble-like marble patterns, and most of them were plate-shaped, so they did not use molds with complex shapes such as those used for equipment.

Furthermore, there was no painting process required for the painting, and the polished luster characteristic of marble could not be expected.

In view of the above-mentioned situation, the present invention aims to provide a method for manufacturing artificial marble that has various performances that can be used as equipment and has good surface gloss.

An embodiment of the method for manufacturing an artificial marble device according to the present invention will be described below.

67 parts by weight of colored stone powder such as marble and 6 parts by weight of wood chips are mixed with 60 parts by weight of a thermosetting resin made of formaldehyde and urea and a catalyst made of phosphoric acid or P-toluenesulfonic acid. The material was heated and compressed for 15 minutes at 150° C. in a disc-shaped mold with concentric holes.

The disc ill VcVi thus completed has a marble-like marble pattern (2). Next, the surface of the disk (moon) is painted using the maki-e technique (3).The finished product is then coated with a transparent rear lacquer and polished (4). It will be done.

A clock (5) is inserted into the concentric circle in the center of the disk (1) which has been polished after finishing in this way, and is propped up on a wooden base (6) as a device for a table clock. used.

The artificial marble of the present invention produced in this manner has a lustrous luster similar to that of polished natural marble. Furthermore, the raw material can be filled without any gaps even if the mold has a desired complicated shape. It has a marble-like marble pattern similar to Hapa natural marble, and can be painted using maki-e techniques to give it an even more luxurious and profound feel.

Note that the devices manufactured by the method of the present invention include trays, trays,
It can be applied to various purposes such as telephone stands and other ornaments, and thermosetting resins are not limited to urea formaldehyde resin.
In addition to phenol formaldehyde resin and melamine formaldehyde resin, transparent resins such as acrylic resins can of course be used.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an example of a device manufactured by the method of the present invention, and FIG. 2 is a longitudinal cross-sectional view of a portion of the device. In the diagram: (1)... Disk-shaped equipment, (2)... Marble-like marble pattern, (3)... Painting, (4
)...Polished.

Claims (1)

[Claims] ■ 10 to 40 parts by weight of a thermosetting resin made of urea formaldehyde resin, etc., and 90 to 60 parts by weight of colored stone powder such as marble.
The process involves mixing parts by weight and heating and compression molding the desired device in a mold to create a marble-like marble pattern.
An artificial marble equipment product characterized in that, as a post-processing step, the molded equipment product is subjected to a polishing process by painting the surface of the molded equipment product with clear lacquer, through a painting process, if necessary. Production method.