D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
D21F 3/00 (2006.01) D21F 3/02 (2006.01) D21F 3/04 (2006.01)
Patent
CA 2137432
The invention concerns a press section of a paper machine, through which press section the paper web (W) is passed as a closed draw on support of a press fabric (11,28,36) and of a smooth roll face (31,39'). The first nip in the press section is an extended-nip press (NP1) through whose press zone two opposite press fabrics (11,28) that receive water have been passed. The upper press fabric in the extended-nip press (NP1) is a pick-up fabric (11), which carries the paper web (W) from the forming wire (10). In the press section, there are at least two other nips (N1,N2;NP2',NP3') that have been formed in connection with the smooth-faced (31) centre roll (30). The centre roll (30) is fitted at a level higher (H1) than the level of the extended-nip press (NP1). In the first one of the other nips (N1; NP2'), the press fabric consists of the pick-up fabric (11), and the second other nip (N2;NP3') has a press fabric (33) of its own that receives water. After the extended-nip press (NP1), the running direction of the paper web (W) has been turned at an angle a, which has been chosen as a ~ ~45°.
Gowling Lafleur Henderson Llp
Valmet Paper Machinery Inc.
LandOfFree
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