Injection blow molder for duplex hollow molded articles

Details Injection blow molder for duplex hollow molded articles Injection blow molder for duplex hollow molded articles

1980-02-15

1982-03-23

Silbaugh, Jan H.

Plastic article or earthenware shaping or treating: apparatus

Female mold and means to shape parison directly by internal...

Utilizing laminated parison

264513, 425533, B29C 1707

Patent

active

043210295

ABSTRACT:
An injection blow molder for manufacturing duplex hollow molded articles has four operation stages: An injection molding state, a heating stage, a stretching and blowing stage, and a mold releasing stage and has 1 neck molds more than the number of stages. The injection molding stage is expanded to include the stopping positions of two adjacent neck molds. In the injection molding stage, an inner parison and an outer parison are separately formed; and in the later stages they are stretched and blow molded to form a duplex hollow molded article.

REFERENCES:
patent: 3868202 (1975-02-01), Valyi
patent: 3878282 (1975-04-01), Bonis et al.
patent: 3947176 (1976-03-01), Rainville
patent: 3970419 (1976-07-01), Valyi
patent: 4065246 (1977-12-01), Marcus
patent: 4105391 (1978-08-01), Aoki

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