Orientation of films to improve barrier and UV stability

Details Orientation of films to improve barrier and UV stability Orientation of films to improve barrier and UV stability

1999-06-23

2008-07-08

Ahmed, Sheeba (Department: 1794)

Plastic and nonmetallic article shaping or treating: processes

Utilizing heat releasable stress to reshape solid workpiece

C264S288400, C264S289600, C264S290200, C264S291000, C053S399000, C053S401000, C053S441000, C053S556000

Reexamination Certificate

active

07396498

ABSTRACT:
The invention disclosed herein relates to a method of treating plastics material fibers, filaments or film to improve their resistance to degradation by UV radiation and/or increase their resistance to gas (oxygen) transmissivity and an improved plastics material so treated, the method including stretching the fiber, filament or film beyond its yield point and allowing the film to at least partially relax.

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