Apparatus for making blow molded generally tire shaped articles

Details Apparatus for making blow molded generally tire shaped articles Apparatus for making blow molded generally tire shaped articles

1977-12-22

1980-07-29

Lazarus, Richard B.

Plastic article or earthenware shaping or treating: apparatus

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

Including means to prepare parison

425541, B29D 2303

Patent

active

042148650

ABSTRACT:
A tire shaped article is blow molded by extruding a tubular parison between movable mold sections, sealing the open end of the parison, injecting air into the parison, moving a lower mold section and the bottom portion of the parison upwardly and expanding an intermediate portion of the parison radially outwardly into a mold cavity.

REFERENCES:
patent: 3111711 (1963-11-01), Colombo
patent: 3309442 (1967-03-01), Stanley
patent: 4005966 (1977-02-01), Nutting

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