EP 1392916 B1 20060823 - METHOD FOR THE MANUFACTURE OF PAPER OR BOARD
Title (en)
METHOD FOR THE MANUFACTURE OF PAPER OR BOARD
Title (de)
VERFAHREN ZUR HERSTELLUNG VON PAPIER ODER PAPPE
Title (fr)
PROCEDE DE FABRICATION DU PAPIER OU DU CARTON
Publication
Application
Priority
- FI 0200349 W 20020425
- FI 20011032 A 20010516
Abstract (en)
[origin: WO02092908A1] Stock is fed from a headbox (100) to a gap former (200) in which water is removed from a web in two directions. The web formed in the gap former is passed to a press section (300) comprising at least one extended nip (N1, N2), in which press section water is removed from the web by pressing and in which the last press nip (N2) is single-felted. In that connection, the density of the web surface which is in the direction of removal of water becomes higher than the density of the opposite surface. The web pressed in the press section is passed to a dryer section (400) in which the web is dried applying at least cylinder drying (R1, R2, R3), after which the web is passed to an end calender (500) in which the web is calendered. After the press section, heating is applied by at least one hot pre-calendering device (Nh) to that surface of the web which is placed against a substantially impervious press surface in the last press nip (N2) of the press section, whereby the fibres of the web surface having a lower density are heated and water is evaporated and transferred to the opposite surface of the web.
IPC 8 full level
D21F 3/00 (2006.01); D21F 3/02 (2006.01); D21F 5/04 (2006.01); D21F 9/00 (2006.01); D21F 11/00 (2006.01); D21G 1/00 (2006.01)
CPC (source: EP)
D21F 3/045 (2013.01); D21F 5/04 (2013.01); D21F 9/003 (2013.01); D21F 11/00 (2013.01); D21G 1/00 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 02092908 A1 20021121; AT E337433 T1 20060915; DE 60214164 D1 20061005; DE 60214164 T2 20070712; EP 1392916 A1 20040303; EP 1392916 B1 20060823; FI 109481 B 20020815; FI 20011032 A0 20010516
DOCDB simple family (application)
FI 0200349 W 20020425; AT 02716874 T 20020425; DE 60214164 T 20020425; EP 02716874 A 20020425; FI 20011032 A 20010516