Control of detachment of a paper web from a roll using heat
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United States of America Patent
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-
Apr 24, 1990
Grant Date -
N/A
app pub date -
Jan 25, 1988
filing date -
Jan 23, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Control of detachment of a web from a roll, such as a paper web from a press roll in a paper machine, in particular a so-called closed press section provided with a smooth-faced press roll. The temperature of the surface of the smooth-faced press roll is adjusted, so that adhesion between the roll surface and the paper web to be detached is influenced or affected. Thereby, the detaching angle and/or the detaching tension of the paper web, is set within an optimal range. Temperature profile of the smooth-faced press roll in the axial direction thereof, can also be adjusted with a view to controlling the detaching of the web.
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