Compact cassette having a liner made of high glass-transition-te

Details Compact cassette having a liner made of high glass-transition-te Compact cassette having a liner made of high glass-transition-te

1993-11-17

1994-11-22

Watkins, III, William

Stock material or miscellaneous articles

Structurally defined web or sheet

Nonplanar uniform thickness material

428900, 428694R, 428176, 428181, 428412, 206387, 206389, 360132, 360133, 360134, G11B 23087

Patent

active

053667883

ABSTRACT:
A compact cassette is provided with substantially rectangular plastic support liner(s) between tape roll(s) and cassette wall(s), having at least one longitudinal bend, and the deflections of the support liners in a defined load range should be not more than a factor of 2 greater in the case of exposure to heat at about 85.degree. C. compared with no exposure. Suitable liner materials are those having glass transition temperatures equal to or greater than 85.degree. C., for example consisting of polysulfones, polyethersulfones, polyarylether ketones, polyetherimides, and/or blends and/or copolymers thereof.

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