Apparatus for blow molding plastic articles from a parison

Details Apparatus for blow molding plastic articles from a parison Apparatus for blow molding plastic articles from a parison

1981-12-30

1984-01-24

Silbaugh, Jan H.

Plastic article or earthenware shaping or treating: apparatus

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

Including means to close or lock blow mold

4254501, 4254519, B29C 1707

Patent

active

044273606

ABSTRACT:
In the art of blow molding thermoplastic articles a pair of blow mold halves is closed around a parison. A blowing medium is applied so that the parison is thus blown to a container configuration. In this blowing step very high closing forces are necessary to maintain the mold halves in closed position. The invention provides for a plurality of biased pistons which are actuated by a pressure medium to support the mold halves on a stationary frame.

REFERENCES:
patent: 2559235 (1971-02-01), Hagen
patent: 4273524 (1981-06-01), Smith

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