Method for the orientation of thermoplastic polyether ether keto

Details Method for the orientation of thermoplastic polyether ether keto Method for the orientation of thermoplastic polyether ether keto

1982-02-18

1984-03-06

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Reshaping running or indefinite-length work

26433121, 528125, B29C 1702

Patent

active

044353502

ABSTRACT:
A method for the orientation of a thermoplastic polyether ether ketone film or sheet is described, which comprises rolling the thermoplastic polyether ether ketone film or sheet containing therein a repeating unit represented by the formula: ##STR1## singly or in combination with one or more different repeating units at a linear pressure of at least 100 kg/cm by the use of at least one pair of pressure rolls maintained within a temperature range of from 80.degree. C. to 320.degree. C. while applying a backward tension of at least 80 kg/cm.sup.2.

REFERENCES:
patent: 2177659 (1939-10-01), Kimble
patent: 4120931 (1978-10-01), Fukushima
patent: 4176222 (1979-11-01), Cinderey
patent: 4320224 (1982-03-01), Rose
patent: 4331798 (1982-05-01), Staniland

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