Thread forming and neck finishing apparatus

Details Thread forming and neck finishing apparatus Thread forming and neck finishing apparatus

1977-07-07

1978-09-26

Lazarus, Richard B.

Plastic article or earthenware shaping or treating: apparatus

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

Forming baffle, bottleneck, or handle

425529, B29D 2303

Patent

active

041166078

ABSTRACT:
The invention is a process and apparatus for biaxially blow molding hollow plastic articles to provide a finished neck of axially oriented material in the molding step. One end of a plastic parison is placed over a blow pin positioned between separable mold halves. The parison is then axially oriented and necked down over said blow pin. A crammer sleeve is positioned over the blow pin to cram axially oriented material into the neck finishing cavities when the molds are closed over said blow pin and parison.

REFERENCES:
patent: 3209401 (1965-10-01), Mehnert
patent: 3531556 (1970-09-01), Mehnert
patent: 3969060 (1976-07-01), Rosenkranz et al.

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