Patent ID: 8067105
Filing Date: 2011-11-29
Classification: B32B,C08J,C08L,Y10S,Y10T

Abstract:
1. A magnetic recording medium comprising a biaxially oriented laminated film and a magnetic layer disposed on one surface thereof: at least one layer of said laminated film is a film layer C comprising a polyolefin (b) having a melting point of from 230 to 280° C., and at least one layer of said laminated film is a film layer B comprising an aromatic polyester (a) laminated on at least one surface of said film layer C, wherein the total number of film layers B and C is at least four, the ratio of the polyolefin (b) is from 2 to 60% by weight based on the entire weight of the film, the film thickness is from 1 to 10 μm, the humidity expansion coefficient in the width direction of the film is from 0.5×10 the temperature expansion coefficient in the width direction of the film is from −8×10