Presses – Methods – With heating or cooling
Patent
1989-10-19
1992-11-17
Hornsby, Harvey C.
Presses
Methods
With heating or cooling
100 35, 100 73, 100 93P, 100 93RP, 100153, 162206, 162207, B30B 1534, B30B 504, D21G 100
Patent
active
051633647
ABSTRACT:
Calendering takes place in a calendering zone which operates under pressure with application of temperature and moisture. The desired smoothness is achieved with a correspondingly long dwell time of the material web in a correspondingly long calendering zone in view of the speed of web travel. A web which is still wet is guided between parallel heatable surfaces which are arranged on both sides of the web and face each other through the web and can each be pressed against the web. The surfaces are designed to form and hold a given precise contour of the calendering zone over its full length. One surface is constructed e.g. as a casing of a heated roller and the second surface is constructed as an endless flexible belt which can be pressed in a direction towards the roller casing by means of a concave supporting element. If wished, the web can be calendered on both sides with the method.
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Bubik Alfred
Dahl Hans
Hess Harald
Holik Herbert
Kurtz Rudiger
Gerrity Stephen F.
Hornsby Harvey C.
Sulzer-Escher Wyss GmbH
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