Title:
MANUFACTURE OF ARTIFICIAL STONE
Document Type and Number:
Japanese Patent JP3397857
Kind Code:
B2
Abstract:
PURPOSE: To improve flame resistance, abrasion resistance, scratch resistance, and weather resistance of artificial stone having appearance and texture of natural stone by filling a mold with a mixture of natural stone and acrylic binder resin, pressuring it with vibration under a state of vacuum, curing it with room temperature or heat, and polishing at least one surface of it.
CONSTITUTION: A natural stone of 85-95wt.% and an acrylic binder resin of 5-15wt.% are mixed. A mold is filled with the mixture, which is pressured by vibration under a state of vacuum. The mold is cured by room temperature or heat so as to obtain a cured molded body. At least one face of it is polished. A device to be used for making the vibration and compression comprises a plurality of hydraulic cylinders 5 attached to a side wall 4 of a vacuum device. Piston rods 6 of the cylinders penetrate the side wall 4 airtightly, and one end of each of them is attached to a movable upper mold 2 of the mold 7. The hydraulic cylinders 5 make the piston rods 6 extend and contract, push down the upper mold 2 by adding vibration to it so as to compress the mixture 3. Accordingly, foams will not be housed.
Inventors:
Hideo Konishi
Munekazu Arakawa
Shiro Shintoyo
Yasuo Mitani
Munekazu Arakawa
Shiro Shintoyo
Yasuo Mitani
Application Number:
JP25735593A
Publication Date:
April 21, 2003
Filing Date:
October 14, 1993
Export Citation:
Assignee:
Mitsubishi Rayon Co., Ltd.
International Classes:
B29C70/58; C04B26/06; C08F220/12; C08L33/00; C08L33/04; E04F13/14; E04F13/18; B29K33/04; B29L31/10; (IPC1-7): C04B26/06; B29C70/58; C08L33/00; E04F13/14
Domestic Patent References:
| JP380139A | ||||
| JP51149365A | ||||
| JP5219707A |
Attorney, Agent or Firm:
Masatake Shiga (2 outside)
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