Coextrusion of liquid crystal polymers and thermoplastic polymer

Details Coextrusion of liquid crystal polymers and thermoplastic polymer Coextrusion of liquid crystal polymers and thermoplastic polymer

1994-03-24

1996-12-31

Ahmad, Nasser

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With charge transferring layer of specified composition

25229901, 2641761, 2641771, 26417716, 425224, 425325, 428480, C09K 1900

Patent

active

055892361

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.

REFERENCES:
patent: 4966807 (1990-10-01), Harvey
patent: 5248530 (1993-09-01), Jester et al.

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