EP 0500770 A1 19920902 - 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 DE FABRICATION DU PAPIER.
Publication
Application
Priority
SE 8903752 A 19891109
Abstract (en)
[origin: WO9107543A1] A process for the production of paper by forming and dewatering a suspension of cellulose containing fibers and optional fillers on a wire. Three components are added to the suspension, a cationic starch, a cationic polyacrylamide and a polymeric silicic acid, in order to improve retention and dewatering at paper production.
Abstract (fr)
Le procédé de fabrication du papier décrit consiste à former et à égoutter une suspension de cellulose contenant des fibres et des charges éventuelles sur une toile machine sans fin. On ajoute à la suspension trois composants, à savoir un amidon cationique, un polyacrylamide cationique et un acide silicique polymère, afin d'améliorer la rétention et l'égouttage lors de la production du papier.
IPC 1-7
IPC 8 full level
D21H 17/28 (2006.01); D21H 17/00 (2006.01); D21H 17/29 (2006.01); D21H 17/37 (2006.01); D21H 17/63 (2006.01); D21H 17/68 (2006.01); D21H 21/10 (2006.01)
CPC (source: EP)
D21H 17/00 (2013.01); D21H 17/29 (2013.01); D21H 17/375 (2013.01); D21H 17/68 (2013.01); D21H 21/10 (2013.01)
Citation (search report)
See references of WO 9107543A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI NL SE
DOCDB simple family (publication)
WO 9107543 A1 19910530; AT E94231 T1 19930915; AU 637850 B2 19930610; AU 6732890 A 19910613; CA 2069308 C 19960130; DE 69003249 D1 19931014; DE 69003249 T2 19940331; EP 0500770 A1 19920902; EP 0500770 B1 19930908; ES 2046040 T3 19940116; FI 100611 B 19980115; FI 922055 A0 19920506; FI 922055 A 19920506; JP H04505351 A 19920917; SE 8903752 D0 19891109
DOCDB simple family (application)
SE 9000688 W 19901024; AT 91900405 T 19901024; AU 6732890 A 19901024; CA 2069308 A 19901024; DE 69003249 T 19901024; EP 91900405 A 19901024; ES 91900405 T 19901024; FI 922055 A 19920506; JP 51582890 A 19901024; SE 8903752 A 19891109