Kuraray Co., Ltd.

Hoechst Celanese Corporation

Other

Takeichi Tsudaka

Toshiaki Sato

Minoru Onodera

Randy Douglas Jester

Detlef M Frank

Tohei Moritani

John Arthur Penoyer

Douglas Duane Roth

Koichi Saito

Tadao Yoshikawa

Yoshinobu Tanaka

Leonard R Garrett, Deceased

A method of producing a metal laminate for a circuit board includes a first step of press-bonding a thermotropic liquid crystal polymer film having a segment orientation ratio SOR within a range not smaller than 0.90 and smaller than 1.15 along the longitudinal direction of the film, to a metal sheet between hot rolls while the thermotropic liquid crystal polymer film is in a tense or non-tense state; and a second step of heating the laminate obtained in the first step to a temperature not lower than the melting point of the thermotropic liquid crystal polymer film.

Metal laminate for a circuit board

A coating layer of a polymer capable of forming an optically anisotropic melt phase is formed by heat-pressing to a base material a film made of the polymer and having a segment orientation ratio of not greater than 1.3 and then separating the film into two halves so as to leave one of the halves on the base material, thereby obtaining a coated material made of the base material and the thin coating layer.

Coating method utilizing a polymer film and method of making metal-polymer laminates

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.

LCP films having roughened surface and process therefor

A process for treating a liquid crystal polymer film which includes the steps of: heating a film obtained by extrusion molding of a liquid crystal polymer, while contacting at least one surface of the film with a supporting body, to melt the polymer; cooling the melted polymer to form a solidified polymer layer; and separating the solidified polymer layer from the supporting body. The process readily provides liquid crystal polymer films having excellent resistance to intra-layer delamination and high tensile strength and elongation, as well as excellent resistance to abrasion, dimensional stability when heated, and resistance to folding.

Process for treating liquid crystal polymer film

A process for treating a film comprising a liquid crystal polymer capable of forming an optically anisotropic melt phase, which comprises passing the film between press rolls at a temperature in a range of from 80.degree. C. below the melting point of the liquid crystal polymer to 5.degree. C. below the same melting point and under a linear pressure of 20 to 400 kg/cm.

Process for treating film comprising liquid crystal polymer

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Kurashiki, Japan

Takeichi Tsudaka