| 摘要 |
The present invention relates to a film made of an aromatic polyamide having excellent running property, durability and output characteristics when combined with a magnetic medium, and having excellent heat resistance, the number of large protrusions per 100 cm2 H2 on one surface of the film and the number of large protrusions per 100 cm2 H3 on the opposite surface of the film satisfy the relationships of: H2</=50 2</=H3</=100, and the tensile Young's modulus E20 at 20 DEG C. in at least one direction and the tensile Young's modulus E100 at 100 DEG C. in the same direction satisfy the relationships of: E20>/=800 kg/mm2 0.5</=E100/E20.
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