Dual parison stacked clamp blow molding method

Details Dual parison stacked clamp blow molding method Dual parison stacked clamp blow molding method

1997-07-28

1999-09-07

Timm, Catherine

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Including application of internal fluid pressure to hollow...

264540, B29C 4904, B29C 4936

Patent

active

059483466

ABSTRACT:
A blow molding method including a clamp for clamping two molds in back-to-back relationship, the clamp having first and second movable, inner platens supporting interior sections of two molds; first and second movable outer platens supporting exterior mold sections facing the interior sections; a positioner to move the inner and outer platens between opened and closed positions; an extrusion means to extrude parisons between mold sections, injectors to inject air into the interior of the parisons; and a platen retainer to resiliently position the inner platens between the outer platens to equalize pressure in the two molds.

REFERENCES:
patent: 3355763 (1967-12-01), Willert
patent: 3941863 (1976-03-01), Pollock et al.
patent: 4457689 (1984-07-01), Aoki
patent: 4859170 (1989-08-01), Aoki

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