Novel process for deep stretch forming of polyesters

Details Novel process for deep stretch forming of polyesters Novel process for deep stretch forming of polyesters

1982-08-20

1983-12-06

Derrington, James H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Plural sequential shaping or molding steps on same workpiece

264292, 264322, 264323, B29C 1703

Patent

active

044193203

ABSTRACT:
A deep stretch forming process for producing low distortion, biaxially oriented, heat set, hermetically sealable hollow containers of high molecular weight saturated linear polyesters comprised of deep stretching an injection molded heated contoured preform into a hollow die by means of a heated forming plunger, annealing or heat setting and then cooling the formed hollow container prior to said containers removal from said die.

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patent: 3865302 (1975-02-01), Kane

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