Biaxially oriented film

Details Biaxially oriented film Biaxially oriented film

B - Operations, Transporting

29

C

B29C 55/26 (2006.01) B32B 5/16 (2006.01) B32B 27/20 (2006.01) B32B 27/36 (2006.01) C08J 5/18 (2006.01) C08L 67/02 (2006.01) G11B 5/73 (2006.01) G11B 5/738 (2006.01)

Patent

CA 2103840

ABSTRACT OF THE DISCLOSURE Disclosed is a biaxially oriented film and a laminated film containing specified organic particles at a content of 0.001 to 20% by weight. The strength when deformed by 10% (S10) of the organic particles is in the range of 3 to 30 kgf/mm2, the thermal decomposition temperature for causing 10% loss in weight thereof is not lower than 350 °C . The weight average diameter thereof is in the range of 0.005 to 5 µ m. Since the organic particles have a good affinity with the matrix resin of the film and a good thermal resistance and the hardness of the particles is appropriate, desired protrusions hardly chipped and having an appropriate hardness for hardly scratching a magnetic- surface can be formed on a film surface easily and uniformly. Therefore, a film excellent in abrasion resistance and scratch resistance at a high running speed and excellent in running durability can be obtained, which is useful particularly as a base film of a magnetic tape.

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