Blow molding devices

Details Blow molding devices Blow molding devices

1979-02-21

1980-09-30

Silbaugh, Jan H.

Plastic article or earthenware shaping or treating: apparatus

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

Forming baffle, bottleneck, or handle

264533, 425527, 425535, B29C 1707

Patent

active

042253039

ABSTRACT:
Devices for making hollow articles such as bottles from thermoplastic resin with a blow mold wherein a parison in the mold is shaped by air blown through a blow pin carrying a mandrel arranged to seal a portion of the parison with respect to a section of the mold in order to provide an additional quantity of thermoplastic resin in a critical area to be subsequently shaped in a smooth inner annular surface by the mandrel.

REFERENCES:
patent: 3369272 (1968-02-01), Martin, Jr. et al.
patent: 3502758 (1970-03-01), Plummer
patent: 3907475 (1975-09-01), Bowers
patent: 4032278 (1977-06-01), Kuenzig et al.

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