Stock material or miscellaneous articles – Structurally defined web or sheet – Continuous and nonuniform or irregular surface on layer or...
Patent
1994-09-19
1997-09-09
Thibodeau, Paul J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Continuous and nonuniform or irregular surface on layer or...
428216, 428327, 428331, 428338, 428480, 428694ST, 428694SG, 428910, B32B 502, B32B 2706, B32B 2720, B32B 2736
Patent
active
056654545
ABSTRACT:
A biaxially oriented polyethylene-2,6-naphthalate film suitable for producing magnetic recording media wherein the film has a Young's modulus of at least 550 kg/mm.sup.2 in the longitudinal direction and a Young's modulus of at least 800 kg/mm.sup.2 in the transverse direction with the Young's modulus in the transverse direction being greater than the Young's modulus in the longitudinal direction by more than 230 kg/mm.sub.2, a surface roughness Ra of 1-12 nm; and low heat shrinkage. The film also contains 0.005-2% by weight inorganic or organic fine particles.
REFERENCES:
patent: 4316927 (1982-02-01), Kimura et al.
patent: 4318957 (1982-03-01), Videc
patent: 4720412 (1988-01-01), Katoh et al.
patent: 4761327 (1988-08-01), Hamano et al.
patent: 4818581 (1989-04-01), Katoh et al.
patent: 4833019 (1989-05-01), Suwarnasarn
patent: 5047278 (1991-09-01), Ono et al.
patent: 5051292 (1991-09-01), Katoh et al.
patent: 5100719 (1992-03-01), Endo et al.
patent: 5106681 (1992-04-01), Endo et al.
Database WPI Week 7647, Derwent Publications Ltd., London, GB; AN 76-87405X & JP-A-50 081 325 (Teijin) 2 Jul. 1975.
Etchu Masami
Hamano Hisashi
Hosoi Masahiro
Saeki Yasuhiro
Chen Vivian
Teijin Limited
Thibodeau Paul J.
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