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

1980-10-22

1982-11-09

Hess, Bruce H.

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

2065241, 215 1C, 264292, 426113, 426415, 428480, 428910, B32B 2736, B65D 100, B65D 8500

Patent

active

043584926

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.

REFERENCES:
patent: 3108881 (1963-10-01), Shau et al.
patent: 3496143 (1970-02-01), Siggel et al.
patent: 3499188 (1970-03-01), Johnson
patent: 3532786 (1970-10-01), Coffman
patent: 3577510 (1971-05-01), Schmitz et al.
patent: 3716369 (1973-02-01), Perlman
patent: 3865302 (1975-02-01), Kane

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