Base film of digital compact cassette tape

Details Base film of digital compact cassette tape Base film of digital compact cassette tape

G - Physics

11

B

G11B 5/62 (2006.01) G11B 5/733 (2006.01) G11B 5/74 (2006.01)

Patent

CA 2087297

- 23 - ABSTRACT OF THE DISCLOSURE A base film of a digital compact cassette tape comprising at least two layers consisting of laminated biaxially oriented polyester films, one surface of which has center line average roughness of 5 to 20 nm, and the other surface of which has center line average roughness of 15 to 45 nm, and which has a Young's modulus in a machine direc- tion of at least 600 kg/mm2, which base film is excellent in running stability and electromagnetic conversion characte- ristics.

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