Method of improving the flatness of compression-rolled plastic f

Details Method of improving the flatness of compression-rolled plastic f Method of improving the flatness of compression-rolled plastic f

1980-09-26

1982-01-12

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

264280, 264346, B29C 1702, B29C 2500

Patent

active

043104851

ABSTRACT:
The flatness of compression-rolled plastic film is improved by passing the film under tension over heated rolls, stretching the heated film, setting the stretched film by passing it over a tempering roll, and then cooling the set film by passing it over a cooling roll.

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patent: 4120931 (1978-10-01), Fukushima et al.
patent: 4134957 (1979-01-01), Yoshimura

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