D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
34/40
D21F 5/04 (2006.01) F26B 3/04 (2006.01)
Patent
CA 1308552
ABSTRACT OF THE DISCLOSURE A dryer section apparatus is disclosed for drying a web. The apparatus includes a first, and second tier of dryers which include, respectively, a first second dryer and a third dryer. The arrangement is such that the web moves from the first dryer towards and around the third dryer and subsequently to and around the second dryer. A transfer roll is disposed between the first, second and third dryers such that the distance between the transfer roll and the first dryer is less than the distance between the transfer roll and the second dryer. A dryer felt extends contiguously with the web around the first dryer with the felt then extending around the transfer roll and thereafter around the second dryer such that a pocket is defined between the web extending between the dryers, the third dryer and the felt. A blow box is disposed between the roll and the first and second dryers with the box being disposed outside the pocket for blowing a first current of air into the pocket through the felt extending between the first dryer and the roll. The first current of air augments a first flow of air flowing into the pocket through the felt extending between the first dryer and the roll to balance a second flow of air flowing out of the pocket through the felt extending between the roll and the second dryer.
610339
Metso Paper Inc.
Mitsubishi Heavy Industries Ltd.
Ridout & Maybee Llp
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