| abstract |
The present invention pertains to a thermoplastic resin film in which: the ratio Er30 at 30°C of the elastic modulus ETD in a film width direction orthogonal to a film transport direction relative to the elastic modulus EMD in the film transport direction is 1.1-1.8; and the difference between a maximum value Ermax and a minimum value Ermin selected from the ratio Er30 at 30°C, the ratio Er90 at 90°C, the ratio Er120 at 120°C, the ratio Er150 at 150°C, and the ratio Er180 at 180°C, of the elastic modulus ETD relative to the elastic modulus EMD, is 0.7 or less. The present invention also pertains to a method for producing the thermoplastic resin film. |