| abstract |
The object of the present invention is to provide a polyamide-based film which has excellent thickness uniformity and has small variations in physical properties in four directions consisting of a 0-degree direction, a 45-degree direction, a 90-degree direction, and a 135-degree direction. its method of manufacture. The solution of the present invention is a polyamide-based film characterized in that: (1) the film is rotated 45 degrees clockwise from an arbitrary point in a specific direction at 0 degrees relative to the direction. In the 4 directions of , 90 degrees and 135 degrees, when the elongation is 5% based on the uniaxial tensile test, the difference between the maximum value and the minimum value of each stress is 35 MPa or less; and (2) in the aforementioned 4 directions, based on When the uniaxial tensile test is elongated by 15%, the difference between the maximum value and the minimum value of each stress is 40 MPa or less. |