Plastic and nonmetallic article shaping or treating: processes – With step of making mold or mold shaping – per se – Utilizing surface to be reproduced as an impression pattern
Patent
1987-02-25
1989-03-14
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
With step of making mold or mold shaping, per se
Utilizing surface to be reproduced as an impression pattern
164 36, 264 86, 264226, B29C 3338
Patent
active
048122785
ABSTRACT:
A cast article having a complicated shape of the appearance and the hollow can be obtained by forming a coating film on the surface of a pattern from a solvent-insoluble material to prepare a mold pattern, filling and hardening a molding material around the mold pattern, dissolving the pattern with a solvent, and removing the residue of dissolution and the coating film outside the mold.
REFERENCES:
patent: 2476993 (1949-07-01), Milton et al.
patent: 3410942 (1968-11-01), Bayer
patent: 4443261 (1984-04-01), Nordqvist
Hioki Susumu
Kanekatsu Kensuke
Natori Tatsuo
Shimaguchi Takashi
Watanabe Akihide
Fertig Mary Lynn
Hitachi , Ltd.
Silbaugh Jan H.
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