D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
34/23
D21F 5/04 (2006.01) D21F 5/18 (2006.01) F26B 13/08 (2006.01) F26B 13/10 (2006.01)
Patent
CA 2004848
ABSTRACT OF THE DISCLOSURE Multi-cylinder dryer, has upper cylinder (13,14,15,16) and lower cylinders (10,11,12) over which a paper web (W) to be dried is run in meandering fashion from one cylinder onto the next cylinder The paper web is in direct contact with each drying cylinder within a sector that is larger than 180°, an upper wire (5) and a lower wire (6) are used to press the paper web against faces of the drying cylinders (10,11,12; 13,14,15,16). The wires (6,5) are guided by guide rolls, which are placed in such a way that the paper web (W) is continuously supported by a wire (5,6) as it runs from one cylinder onto the other. The guide roll arrangements consist of fragmentary rolls (21,51), which are supported on suction boxes (20) and/or on blow boxes (50) so that at least two fragmentary rolls (21,51) are supported on each suction box (20)/blow box (50). By means of the suction boxes (20)/blow boxes (50), blowings (S,P) are directed at the drying wire (5,6). The blowings improve a support contact between the paper web (W) and the wire (5,6) and/or pocket ventilation.
Autio Jukka
Marks & Clerk
Valmet Paper Machinery Inc.
LandOfFree
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