Apparatus for blowing oriented containers

Details Apparatus for blowing oriented containers Apparatus for blowing oriented containers

1980-10-07

1982-12-21

Silbaugh, Jan H.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Molding pressure control means responsive to pressure at...

264531, 425150, 425529, 425533, B29C 1707

Patent

active

043647219

ABSTRACT:
This specification discloses an improved apparatus and method for making bi-axially oriented containers in an injection blow molding machine. The parison is brought to the blow mold at orientation temperature, and the end of a reciprocating element is brought into contact with the end of the parison and is shaped to prevent the end of the parison from shifting off center as the parison is blown and stretched axially while it expands circumferentially to obtain bi-axial orientation. The reciprocating element prevents the parison from shifting laterally in the blowing mold so that the stretching and the wall thickness of the blown article is uniform.

REFERENCES:
patent: 688924 (1901-12-01), Blair et al.
patent: 3275726 (1966-09-01), Rudolph
patent: 3550200 (1970-12-01), Gilbert
patent: 3757718 (1973-09-01), Johnson
patent: 4061706 (1977-12-01), Duffield et al.

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