Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...
Patent
1998-08-19
2000-04-04
Timm, Catherine
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Layered, stratified traversely of length, or multiphase...
26417127, 264503, 4251331, 428 1, B29C 4706
Patent
active
060457376
ABSTRACT:
A flat and nearly mechanically isotropic polymer film or sheet, or a tube, can be formed by laminating two or more films, preferably by coextrusion of a liquid crystal polymer film and a thermoplastic polymer film. A liquid crystal polymer layer may be combined with one or more thermoplastic polymer layer in various arrangements. The liquid crystal, and possibly the thermoplastic as well, may have a controlled molecular orientation. The film may be formed by passing a polymer through a set of two or three tubular rotors which are concentric and have facing surfaces which define inner and outer annular polymer flow channels.
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Database WPI, Section Ch, Week 8738, Derwent Publications Ltd., London Great Britain; AN 87-268072 XP00205899965 & JP 62 187 033 A (Mitsubishi Chem. Ind., Ltd.), Aug. 15, 1987, Abstract.
Harvey Andrew C.
Lusignea Richard W.
Rubin Leslie S.
Superex Polymer Inc.
Timm Catherine
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