Drying Arrangement and Method for Drying a Moving Web
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United States of America Patent
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Issued Date -
Mar 28, 2013
app pub date -
Sep 20, 2012
filing date -
Sep 22, 2011
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Abstract
Moisture profiling is carried out in the transverse direction of a moving paper or board web. An air dryer has a first air supply channel extending transverse to the web and second air supply channels which are connected with the first air supply channel, and into which heated drying air is supplied from the first air supply channel. The second air supply channels are parallel to the travel direction of the web. The air dryer has elongated blowing members, each arranged in connection with a plurality of second air supply channels for supplying heated drying air from the second air supply channels to the blowing members. A profiling connection is arranged in connection with at least one, preferably several, second air supply channels for supplying additional air into the second air supply channel in order to change the moisture profile of the web in the transverse direction of the web.
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