D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
34/24
D21F 5/02 (2006.01) D21F 5/04 (2006.01) F26B 13/00 (2006.01) F26B 13/14 (2006.01)
Patent
CA 1336942
A guide roll apparatus is disclosed for guiding a contiguous web and web-supporting felt through a drying section of a paper machine. The apparatus includes a rotatable guide roll having an outer cylindrical surface defining a first and a second edge portion and a central portion disposed between the edge portions. The first edge portion defines a first plurality of air flow channels such that in use of the apparatus, when the web and felt are guided around the rotatable guide roll, air entrapped between the first edge portion and the felt wrapped around the first edge portion is permitted to flow through the first plurality of channels away from the felt so that fluttering of the web during guidance around the first edge portion is inhibited. The apparatus also includes a second edge portion which defines a second plurality of air flow channels such that in use of the apparatus, when the web and the felt are guided around the rotatable guide roll, air entrapped between the second edge portion and the felt wrapped around the second edge portion is permitted to flow through the second plurality of channels away from the felt so that fluttering of the web during guidance around the second edge portion is inhibited.
567688
Chance James L.
Wedel Gregory L.
Metso Paper Inc.
Mitsubishi Heavy Industries Ltd.
Ridout & Maybee Llp
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