Cellulose acetate films prepared by coating methods

Details Cellulose acetate films prepared by coating methods Cellulose acetate films prepared by coating methods

2006-08-01

2006-08-01

Tentoni, Leo B. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Layered, stratified traversely of length, or multiphase...

C264S173110, C264S213000, C264S217000, C264S234000, C427S384000, C427S415000

Reexamination Certificate

active

07083752

ABSTRACT:
A method of film fabrication is taught that uses a coating and drying apparatus to fabricate resin films suitable for optical applications. In particular, cellulose acetate films are prepared by simultaneous application of multiple liquid layers to a moving carrier substrate. After solvent removal, the cellulose acetate films are peeled from the sacrificial carrier substrate. Cellulose acetate films prepared by the current invention exhibit good dimensional stability and low birefringence.

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