Temperature sensing dryer profile control
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United States of America Patent
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Jan 3, 1995
Grant Date -
N/A
app pub date -
Sep 14, 1993
filing date -
Sep 14, 1993
priority date (Note) -
Expired
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Abstract
A drying control system and method for obtaining a substantially uniformly dried low moisture content web efficiently with reduced energy usage in a papermaking process is provided. The drying rate of the web in this process is precisely controlled by detecting and monitoring the web or felt low and high cross-direction temperature profiles and then actuating drying rate modulators as required to increase or decrease the drying rate to produce a substantially flat temperature profile in response to temperature profile information provided to an automatically or manually controlled central control system by web high temperature and low temperature sensors.
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