EP 1623070 A1 20060208 - A PROCESS FOR THE PRODUCTION OF PAPER
Title (en)
A PROCESS FOR THE PRODUCTION OF PAPER
Title (de)
VERFAHREN ZUR HERSTELLUNG VON PAPIER
Title (fr)
PROCEDE POUR LA FABRICATION DE PAPIER
Publication
Application
Priority
- SE 2004000671 W 20040430
- US 46901003 P 20030509
- EP 03445057 A 20030514
- EP 04730781 A 20040430
Abstract (en)
[origin: WO2004104299A1] The invention relates to a process for the production of paper which comprises (i) providing a main aqueous flow containing cellulosic fibres; (i) introducing one or more retention components into the main aqueous flow to form a main aqueous flow containing one or more retention components; (iii) providing a diluting aqueous flow; (iv) introducing a low molecular weight cationic organic polymer into the diluting aqueous flow to form a diluting aqueous flow containing a low molecular weight cationic organic polymer, the low molecular weight cationic organic polymer having a weight average molecular weight up to 5,000,000; (v) introducing the diluting aqueous flow containing a low molecular weight cationic organic polymer into the main aqueous flow containing one or more retention components to form a resulting aqueous flow; and then (vi) ejecting the resulting aqueous flow onto a wire and dewatering the resulting aqueous flow to form a web of paper. The invention further relates to a process for the production of paper on a paper machine containing a dilution headbox which comprises (i) introducing one or more retention components into a main aqueous flow containing cellulosic fibres, and feeding the obtained main aqueous flow into the dilution headbox; (ii) introducing low molecular weight cationic organic polymer having a weight average molecular weight up to 5,000,000 into a diluting aqueous flow and feeding the obtained diluting aqueous flow into the dilution headbox; (iii) mixing the obtained main aqueous flow with the obtained diluting aqueous flow in the headbox to form a resulting aqueous flow; and (iv) ejecting the resulting aqueous flow onto a wire and dewatering the resulting aqueous flow to form a web of paper. The invention also relates to a process for the production of paper from an aqueous suspension containing cellulosic fibres, and optional filler, which comprises introducing one or more retention components into the suspension followed by introducing into the suspension a low molecular weight cationic organic polymer having a weight average molecular weight up to 5,000,000, and then forming and draining the suspension on a wire.
IPC 1-7
IPC 8 full level
D21H 17/20 (2006.01); D21H 21/10 (2006.01); D21H 23/24 (2006.01)
CPC (source: EP)
D21H 17/20 (2013.01); D21H 21/10 (2013.01); D21H 23/24 (2013.01)
Citation (search report)
See references of WO 2004104299A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004104299 A1 20041202; AR 044128 A1 20050824; AU 2004242046 A1 20041202; BR PI0409990 A 20060509; CA 2524697 A1 20041202; EP 1623070 A1 20060208; JP 2007501344 A 20070125; MX PA05011802 A 20060217; RU 2005138312 A 20060627
DOCDB simple family (application)
SE 2004000671 W 20040430; AR P040101459 A 20040429; AU 2004242046 A 20040430; BR PI0409990 A 20040430; CA 2524697 A 20040430; EP 04730781 A 20040430; JP 2006532174 A 20040430; MX PA05011802 A 20040430; RU 2005138312 A 20040430