Method of molding preform in injection stretch blow molding

Details Method of molding preform in injection stretch blow molding Method of molding preform in injection stretch blow molding

1994-10-14

1997-10-21

Timm, Catherine

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Differential temperature conditioning

425526, B29C 4906, B29C 4964

Patent

active

056793065

ABSTRACT:
A method of molding a preform in an injection stretch blow molding, wherein a gas is entered into the boundary between the preform and an injection core so that the gas pressure causes the preform in an injection mold to be insulated from the injection core, thereby allowing a high-temperature releasing of the preform.

REFERENCES:
patent: 3979491 (1976-09-01), Zavasnik
patent: 4020137 (1977-04-01), Lachner et al.
patent: 4235837 (1980-11-01), Noonan
patent: 4242300 (1980-12-01), Valyi
patent: 4285657 (1981-08-01), Ryder
patent: 4376090 (1983-03-01), Marcus
patent: 5364585 (1994-11-01), Takeuchi

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