EP 0972110 A1 20000119 - METHOD FOR PRODUCING HIGH DRY-STRENGTH PAPER, PULPBOARD AND CARDBOARD
Title (en)
METHOD FOR PRODUCING HIGH DRY-STRENGTH PAPER, PULPBOARD AND CARDBOARD
Title (de)
VERFAHREN ZUR HERSTELLUNG VON PAPIER, PAPPE UND KARTON MIT HOHER TROCKENFESTIGKEIT
Title (fr)
PROCEDE POUR PRODUIRE DU PAPIER, DU CARTON-PATE ET DU CARTON A HAUTE RESISTANCE A LA TRACTION A L'ETAT SEC
Publication
Application
Priority
- DE 19713755 A 19970404
- EP 9801786 W 19980326
Abstract (en)
[origin: DE19713755A1] The invention relates to a method for producing high dry-strength paper, pulpboard and cardboard by adding cationic, anionic and/or amphoteric starch as a dry-strength agent to the paper material, dehydrating the paper material to form sheets in the presence of cationic polymers as starch retention agents, and using cationic polymer retention agents to increase retention of dry-strength agents made from cationic, anionic and/or amphoteric starch during the production of paper, pulpboard and cardboard.
IPC 1-7
IPC 8 full level
D21H 17/20 (2006.01); D21H 17/45 (2006.01); D21H 17/55 (2006.01); D21H 17/56 (2006.01); D21H 21/10 (2006.01); D21H 21/18 (2006.01); D21H 17/29 (2006.01); D21H 23/76 (2006.01)
CPC (source: EP KR US)
D21H 21/10 (2013.01 - EP KR US); D21H 21/18 (2013.01 - EP US); D21H 17/29 (2013.01 - EP US); D21H 17/45 (2013.01 - EP US); D21H 17/455 (2013.01 - EP US); D21H 17/55 (2013.01 - EP US); D21H 17/56 (2013.01 - EP US); D21H 23/765 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FI FR GB IT LI NL PT SE
DOCDB simple family (publication)
US 6616807 B1 20030909; AT E268410 T1 20040615; AU 730063 B2 20010222; AU 7427598 A 19981030; CA 2284931 A1 19981015; CA 2284931 C 20100216; DE 19713755 A1 19981008; DE 59811513 D1 20040708; EP 0972110 A1 20000119; EP 0972110 B1 20040602; EP 0972110 B2 20090311; ES 2222591 T3 20050201; JP 2001518988 A 20011016; KR 20010006002 A 20010115; NZ 338029 A 20000428; PT 972110 E 20041029; WO 9845536 A1 19981015; ZA 982842 B 19990120
DOCDB simple family (application)
US 38197099 A 19991001; AT 98921399 T 19980326; AU 7427598 A 19980326; CA 2284931 A 19980326; DE 19713755 A 19970404; DE 59811513 T 19980326; EP 9801786 W 19980326; EP 98921399 A 19980326; ES 98921399 T 19980326; JP 54231698 A 19980326; KR 19997009080 A 19991004; NZ 33802998 A 19980326; PT 98921399 T 19980326; ZA 982842 A 19980403