Apparatus and method for blow-molding

Details Apparatus and method for blow-molding Apparatus and method for blow-molding

B - Operations, Transporting

29

F

18/509

B29F 1/06 (1980.01)

Patent

CA 1143521

ABSTRACT OF THE DISCLOSURE: Apparatus and method for forming hollow articles from plasticized materials are disclosed. A preform is partially formed under substantially no pressure on a pre- form core by introducing the core into a void-free charge of plasticized material that is placed in a preform cavity from a source of the plasticized material. After the pre- form core and preform cavity have moved together to define a preform mold space, the charge of plasticized material is subjected to a pressure forming step to form a completely packed preform on the core. The preform is then blow molded in a blow cavity by introducing blowing gas into the preform through the preform core. Neck mold structure that strips and releases the formed article from the core is also dis- closed.

391579

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