Title:
AROMATIC POLYAMIDE FILM FOR MAGNETIC RECORDING MEDIA AND ITS MANUFACTURING METHOD, MAGNETIC RECORDING MEDIA
Document Type and Number:
Japanese Patent JP2021049740
Kind Code:
A
Abstract:
To provide a film with excellent running stability that can reduce the occurrence of wrinkles, etc. in the magnetic tape coating process, drying process, or calendering process, even when the length of the magnetic tape using aromatic polyamide film as a support is 1,000 m or more per cartridge roll, and a magnetic recording medium using the film.SOLUTION: In an aromatic polyamide film for magnetic recording media, the film width is 500 mm or more, the change in the angle of inclination of the orientation axis (orientation angle) when the film width direction is 0° is within 30° per meter in the film width direction, and the elongation in the film longitudinal direction is less than ±5 mm per 10 meters.SELECTED DRAWING: None
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Inventors:
MITAMURA MANABU
SATO NOBUYUKI
YOKOYAMA WATARU
SATO NOBUYUKI
YOKOYAMA WATARU
Application Number:
JP2019175317A
Publication Date:
April 01, 2021
Filing Date:
September 26, 2019
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
B29C55/14; C08J5/18; G11B5/73; G11B5/84