| 摘要 |
PROBLEM TO BE SOLVED: To provide a film which is excellent in mechanical strength, running property, and thermal dimensional stability accompanying the thinning of a high density magnetic recording tape, in particular a magnetic tape for computer. SOLUTION: At least one layer (A layer) comprises a thermoplastic resin (A) and a disc-form inert particle (PA) as the major components. Then, at least on one surface of the layer A, layer B of which the major component is a thermoplastic resin (B) is laminated for this biaxial orientation laminated thermoplastic resin film which has a laminated structure with at least two layers. In this case, the aspect ratio (an average particulate diameter D in the disc plane direction/an average thickness dt of the particle in the direction being vertical to the disc plane) of the disc-form inert particle (PA) is 3 to 100. Also, the content of the disc-form inert particle is 1 to 80 wt.%.
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