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
1976-08-05
1978-03-07
Hoag, Willard E.
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
106 383, 106 388, 249 62, 264317, 264337, B29C 108, B29C 500
Patent
active
040780350
ABSTRACT:
A method for making a disposable model for a precision investment casting, which comprises casting a naphthalene or para-dichlorobenzene-containing modeling material into a pattern mold at a temperature of 150.degree. C or less, preferably 80 to 150.degree. C and further preferably at a casting speed of 5 to 0.1 kg/second; the modeling material being optionally admixed with a resin selected from the group consisting of polystyrene, polyethylene, polyvinyl acetate and a mixture thereof as a reinforcing material or comprising a mixture of naphthalene or paradichlorobenzene (preferably 80 to 30% by weight), a wax (preferably 20 to 70% by weight) and the resin as mentioned above (preferably 0.5 to 15% by weight on the basis of the whole weight of the modeling material).
REFERENCES:
patent: 3263285 (1966-08-01), Watts et al.
patent: 3528809 (1970-09-01), Farnand
patent: 3686006 (1972-08-01), Horton
patent: 3859405 (1975-01-01), Horton
Izaki Hiroshi
Mine Yasuharu
Morita Yasuji
Ugata Ken
Hoag Willard E.
Kubota Ltd.
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