| 摘要 |
PURPOSE:To obtain a liquid crystal polymer film superior in shock resistance, by making the title film into a thermotropic liquid crystal polymer having a specific thickness, dapples in thickness and Young's modulus. CONSTITUTION:Since the title film is of that comprised of a composition consisting mainly of a thermotropic liquid crystal polymer, whose difference in Young's modulus between a longitudinal and widthwise directions (longitudinal direction-widthwise direction), thickness and dapples in thickness are respectively 500-600kg/mm<2>, 1-100/mum and within a range of not exceeding 20%, a liquid crystal polymer film whose shock resistance is favorable can be provided as mechanical characteristics possessed by the liquid crystal polymer is maintained. Although the thermotropic liquid crystal polymer is not limited specifically and a matter known to public can be used, in case of thermotropic liquid crystal polyester, it is especially preferable since shock resistance becomes more favorable. In the event that a surface layer part and the central part are oriented respectively in the longitudinal and widthwise directions and in the event that a ratio A/B between a thickness A of, the surface layer part and the while thickness B of the film falls within a range of 0.01-0.7, the shock resistance becomes more favorable. In the event that mean heights of protrusions of the surface of the film is 30-50nm, dapples in thickness becomes more favorable. |
