Calender and method for treating material webs in the calender
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United States of America Patent
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Jun 19, 2001
Grant Date -
N/A
app pub date -
Jun 30, 1998
filing date -
Jul 10, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Calender and method for treating a material web. The calender includes a plurality of rolls in which each roll has a rotational axis. The rotational axes of the plurality of rolls are arranged to be substantially located in a press plane, and a plurality of nips are formed between adjacent rolls. A control device is provided to selectively open and close the plurality of nips, and the rolls are arranged so that at least two opened nips are positioned between two closed nips. The method includes forming a closed nip with the top roll, forming a closed nip with the bottom roll, forming at least two open nips between closed nips, and guiding the material web through at least the closed nips.
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