Presses – Concurrent pressing and conveying – Roll type
Patent
1992-03-11
1993-06-01
Gerrity, Stephen F.
Presses
Concurrent pressing and conveying
Roll type
118117, 100168, B30B 304
Patent
active
052150097
ABSTRACT:
An improved calender apparatus for compressing and magnetic recording coating applied thereto, comprises a central roll (1) having a hard surface, around which the magnetic web is wrapped so that one side of the web bears against the central roll, while bearing against the other side of the web are at least three supporting rolls (2) which are distributed evenly around the central roll. With support roll can being rolls linearly displaced, the central roll can be swung out by a jointed lever and the web completely unthreaded. As a result, with two calender apparatuses arranged in series, cleaning of one apparatus is possible while production is not interrupted. The radius of the central roll is less than the radius of the supporting rolls, resulting in a higher linear pressure; in addition, the central roll may be made or mounted in such a way that it is flexible, in order to compensate in this way for unevennesses of the supporting rolls or of the coating.
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Technologie der Magnetbandherstellung; Braginskij et al.; 1981, pp. 271-274.
BASF Magnetics GmbH
Gerrity Stephen F.
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