Method and apparatus for improving the drying capacity of a hood covering a yankee cylinder
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United States of America Patent
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Dec 5, 2000
Grant Date -
N/A
app pub date -
Apr 28, 1999
filing date -
Apr 30, 1998
priority date (Note) -
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Abstract
A method and an apparatus for improving the drying capacity of a hood covering a Yankee cylinder (10), when drying a web with a Yankee cylinder while conveying the web over the cylinder by blowing hot air jets against the web at the region of a first hood (12), said hot air jets having a temperature mainly <550.degree. C. The drying capacity of the drying hood is increased by blowing hot air jets against the web conveyed over the cylinder at the region of a second hood, a so called hot air hood (14, 14', 14'), said hot air jets having a a temperature which is higher than the temperature of the hot air jets blown against the web at the first hood, or mainly >550.degree. C.
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