Injection blow molding

Details Injection blow molding Injection blow molding

B - Operations, Transporting

29

C

18/517

B29C 49/06 (2006.01) B29C 49/00 (2006.01) B29C 49/64 (2006.01)

Patent

CA 1197960

ABSTRACT OF THE DISCLOSURE IMPROVEMENTS RELATING TO INJECTION BLOW MOLDING The present invention provides an injection blow molding process and apparatus for use in the blow molding of containers in which a preform (1) is molded onto a core (20) and is subsequently moved relative to the core to space a body portion (8) of the preform from the core to facilitate the temperature conditioning of the preform to achieve a desired biorientation of the thermoplastic material from which the preform is made when the preform is blow molded to form a container. The temperature conditioning may be achieved by allowing stabilization of the temperature gradient through the material of the preform with or without the assistance of a supply of gas to the preform at a desired temperature.

423487

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