Manufacture of liquid crystalline polymer films

Details Manufacture of liquid crystalline polymer films Manufacture of liquid crystalline polymer films

B - Operations, Transporting

29

C

B29C 43/22 (2006.01) B29C 55/00 (2006.01)

Patent

CA 2263761

An apparatus and method for making thermotropic liquid crystalline polymer films (3) with improved transverse direction properties comprise two preferably embossed rollers (7, 8) which oscillate oppositely with respect to each along their respective rotational axes. Film made by passing a liquid crystalline polymer between such rolls has improved transverse direction properties. Such films are useful in multilayer-containers and for circuit boards.

La présente invention concerne un appareil et un procédé de fabrication de films polymères à cristaux liquides thermotropiques (3) comportant des propriétés de sens travers améliorées et comprenant de préférence deux rouleaux à bossage (7, 8) tournant en sens opposé l'un par rapport à l'autre autour de leur axe de rotation respectif. Un film fabriqué en faisant passer un polymère à cristaux liquides entre de tels rouleaux possède des propriétés de sens travers améliorées. De tels films sont d'un usage courant pour des récipients à plusieurs couches et pour des cartes de circuits imprimés.

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