AROMATIC POLYAMIDE FILM AND MAGNETIC RECORDING MEDIUM USING THE FILM

摘要

PROBLEM TO BE SOLVED: To improve application properties by controlling the generation of wrinkles ad others in a process for forming a coated layer and a back coat layer. SOLUTION: An aromatic polyamide film has a heat distortion ratio H150 at 150 deg.C, 45 g/mm2 load of 0 to -0.08%. The absolute value of the heat distortion ratio|H100|at 100 deg.C and the absolute value of the heat distortion ratio|H150|at 150 deg.C meet formula:|H100|+|H150|<=0.1%, and the elongation of the film 1000 mm in width 10 m in length is±40 mm or below.