| 摘要 |
<p>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 (50) of said blend under melt conditions, allowing the web (50) to cool as it passes over a succession of rolls (34, 36) including a pair of knit rolls (38) which are driven at a speed faster than the speed at which the web (50) is formed, so that the web (50) is stretched or drawn and converted from a continuous web into an open work web comprising polymer blend fibers with interstices between the fibers (20). It is believed that these polymer blend fibers (20) comprise microscopic fibers (20) of the LCP in a matrix of the base polymer.</p> |
