Base film of digital compact cassette tape

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

1993-01-14

1995-05-30

Ryan, Patrick J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428143, 428212, 428213, 428323, 428480, 428694SG, B32B 700

Patent

active

054199425

ABSTRACT:
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 direction of at least 600 kg/mm.sup.2, which base film is excellent in running stability and electromagnetic conversion characteristics.

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Database WPIL, Week 9136, Derwent Publications Ltd., London, GB.

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