Thermoplastic web and process for manufacture same

Details Thermoplastic web and process for manufacture same Thermoplastic web and process for manufacture same

1989-08-10

1991-07-16

Thomas, Alexander S.

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With charge transferring layer of specified composition

428131, 428255, B32B 310

Patent

active

050324330

ABSTRACT:
An open work web of a polymer blend of a thermoplastic base or matrix polymer and a thermotropic liquid crystal polymer (LCP) is formed by preparing a melt blend of the base polymer and a liquid crystal polymer, continuously extruding a continuous web of said blend under melt conditions, allowing the web to cool as it passes over a succession of rolls including a pair of knit rolls which are driven at a speed faster than the speed at which the web is formed, so that the web is stretched or drawn and converted from a continuous web into an open work web comprising polymer blend fibers with interstices between the fibers. It is believed that these polymer blend fibers comprise microscopic fibers of the LCP in a matrix of the base polymer.

REFERENCES:
patent: 3386876 (1968-06-01), Wyckoff
patent: 4728698 (1988-03-01), Isayev et al.
patent: 4835047 (1989-05-01), Isayev et al.

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