EP 1105563 B1 20040317 - PRESS SECTION IN A PAPER MACHINE, IN WHICH PRESS SECTION ONE OR SEVERAL EXTENDED NIPS IS/ARE APPLIED
Title (en)
PRESS SECTION IN A PAPER MACHINE, IN WHICH PRESS SECTION ONE OR SEVERAL EXTENDED NIPS IS/ARE APPLIED
Title (de)
PRESSENPARTIE IN EINER PAPIERMASCHINE MIT EINER ODER MEHREREN LANGSPALTPRESSEN
Title (fr)
SECTION PRESSE DE MACHINE A PAPIER DANS LAQUELLE ON APPLIQUE UNE OU PLUSIEURS PINCES ALLONGEES
Publication
Application
Priority
- FI 9900394 W 19990511
- FI 981089 A 19980515
Abstract (en)
[origin: WO9960202A1] A press section in a paper machine, which press section comprises at least two separate press nips (NP1, NP2; N1, N2, N10, N20, N30, NP10, NP11, NP20, NP21, NP30). The paper web (W) is passed through these nips as a closed draw. In the press section there is at least one press nip provided with two press felts (31, 41; 32, 42) that receive water, through which press nip the paper web (W) runs between said press felts (31, 41; 32, 42). After the last-mentioned nip the paper web (W) is separated from one of the press felts (31/41; 32/42) and transferred on support of the other press felt (41/31; 42/32) as a closed draw further. The last nip is an extended-nip zone (NP2; NP10; NP20, NP21, NP30), in which one roll is a shoe roll (12) provided with a hose mantle (14) and with a press shoe arrangement (13), and the other roll is a press suction roll (22) provided with a suction zone (23). The paper web (W) is passed through the last extended-nip zone (NP2; NP10; NP20, NP21, NP30) between two press fabrics (32, 42). Directly after the last extended-nip zone (NP2; NP10; NP20, NP21, NP30) the paper web (W) is separated from one of the press fabrics (32/42) and transferred, with the aid of the vacuum present in the suction zone (23) of the press suction roll (22), to follow the press fabric (42/32) placed at the side of the press suction roll (22) without rewetting. The web (W) is passed on the latter press fabric (32; 42) as a closed draw onto a drying wire (51) of the dryer section. Further, a modification of the press section is described in which an extended-nip zone which corresponds to the extended-nip zone mentioned above and placed as the last nip is placed as the first nip in the press section.
IPC 1-7
IPC 8 full level
D21F 3/00 (2006.01)
IPC 8 main group level
D21F (2006.01)
CPC (source: EP)
D21F 3/04 (2013.01)
Designated contracting state (EPC)
AT DE FR GB IT SE
DOCDB simple family (publication)
WO 9960202 A1 19991125; AT E262074 T1 20040415; CA 2333280 A1 19991125; DE 69915645 D1 20040422; DE 69915645 T2 20050203; EP 1105563 A1 20010613; EP 1105563 B1 20040317; FI 111859 B 20030930; FI 981089 A0 19980515; FI 981089 A 19991116
DOCDB simple family (application)
FI 9900394 W 19990511; AT 99923626 T 19990511; CA 2333280 A 19990511; DE 69915645 T 19990511; EP 99923626 A 19990511; FI 981089 A 19980515