LCP films having roughened surface and process therefor
AssigneesHoechst Celanese Corporation, Kuraray Co., Ltd.
InventorsMinoru Onodera, Takeichi Tsudaka, Toshiaki Sato, Randy Douglas Jester, Leonard R. Garrett, deceased, Detlef Frank
Life of this patent
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Abstract
A film having a roughened surface. The film is made of an LCP and has surface recessions covering at least about 25% of the area of the surface. The film is made by pressing an embossing means against the film surface at a temperature about 15.degree.-75.degree. C. below the melting point of the polymer. The embossed film has improved resistance to abrasion.
Claims5
An unfilled film comprising a polymer capable of forming an optically anisotropic melt phase, said film having an embossed surface provided with a plurality of recessions, said recessions occupying from about 25% to about 80% of said surface wherein said recessions have an average depth of from about 1 to about 10 .mu.m and an average width or diameter of from about 1 to about 10 .mu.m and further wherein the average width to depth ratio of said recessions is about 5.5 or less,said film being up to about 200 .mu.m thick.
Dependencies are inferred from the claim text.