Process for heat treating thermoplastic containers

Details Process for heat treating thermoplastic containers Process for heat treating thermoplastic containers

1995-01-31

1997-12-30

Timm, Catherine

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Differential temperature conditioning

264530, 264906, B29C 4916

Patent

active

057026653

ABSTRACT:
A process for preparing a thermoplastic container including the steps of providing a biaxially oriented, crystallized precontainer having a first contained volume, and further crystallizing the precontainer by applying heat thereto while the precontainer is substantially unconstrained, and forming a deformed precontainer having a second contained volume. Deformation of the precontainer is controlled by controllably closing the precontainer prior to further crystallizing and while the precontainer remains substantially unconstrained to create a predetermined increased air pressure therein, and reshaping the deformed precontainer into a final container shape.

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