Process for manufacturing cast amorphous film

Details Process for manufacturing cast amorphous film Process for manufacturing cast amorphous film

1992-05-06

1993-10-26

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264216, 425224, B29C 4126

Patent

active

052563596

ABSTRACT:
The present invention is directed to an improved cast film process for manufacturing amorphous film from a polymeric material, particularly a toughened polymeric material. The improvement is directed to a simple and efficient method for obtaining appropriate, controlled orientation of a film produced from a resin such as polyester, wherein the die gap and other factors affecting orientation are properly adjusted to provide a final amorphous film having reduced aging and "splitting" problems.

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patent: 3873664 (1975-03-01), Curtis et al.
patent: 4066729 (1978-01-01), Van Cappellen
patent: 4166089 (1979-08-01), De Geest et al.
patent: 4229407 (1980-10-01), Craig

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