THERMOPLASTIC LIQUID CRYSTALLINE POLYMER FILM LAMINATABLE AT LOW TEMPERATURE

摘要

PROBLEM TO BE SOLVED: To provide a thermoplastic liquid crystalline polymer film having high heat-resistance and nevertheless enabling the lamination of the film at a low temperature without using high temperature and high pressure and giving sufficeint adhesive force without causing the flow of the resin and provide a multi-layer film produced by using the polymer film, a circuit board and a method for the production of the film. SOLUTION: The thermoplastic liquid crystalline polymer film satisfies the relationship TD2-TD1≥60 wherein TD1 is the temperature of the inflection starting point of the gradient on a film thickness-temperature curve determined under a compressive load of 0.05 MPa at a heating rate of 10°C/min and TD2 is the temperature lower than TDmax by 10°C. TDmax is the temperature corresponding to the maximum absolute value of the gradient of the film thickness-temperature curve. COPYRIGHT: (C)2005,JPO&NCIPI