Global Patent Index - EP 1044300 A1

EP 1044300 A1 2000-10-18 - METHOD FOR MAKING A CELLULOSIC WEB WITH IMPROVED WET-TENSILE STRENGTH

Title (en)

METHOD FOR MAKING A CELLULOSIC WEB WITH IMPROVED WET-TENSILE STRENGTH

Title (de)

VERFAHREN ZUR HERSTELLUNG EINER ZELLSTOFFBAHN MIT VERBESSERTER NASSFESTIGKEIT

Title (fr)

PROCEDE DE FABRICATION D'UNE BANDE CONTINUE CELLULOSIQUE A RESISTANCE A LA TRACTION A L'ETAT HUMIDE AMELIOREE

Publication

EP 1044300 A1 (EN)

Application

EP 98960821 A

Priority

  • US 9826045 W
  • US 127697 A

Abstract (en)

[origin: WO9934059A1] A method of improving the wet-tensile strength of a cellulosic web including providing a papermaking furnish containing a cellulosic material and water; adding a surfactant to the papermaking furnish; and adding a wet strength resin to the papermaking furnish after addition of the surfactant. In certain implementations, the surfactant includes an alkyl sulfate or an alkyl sulfonate. The method provides an improved cellulosic web haing improved wet/dry tensile ratio.

IPC 1-7 (main, further and additional classification)

D21H 21/20; D21H 21/24; D21H 23/76

IPC 8 full level (invention and additional information)

D21H 21/20 (2006.01); D21H 21/24 (2006.01); D21H 23/76 (2006.01)

CPC (invention and additional information)

D21H 23/765 (2013.01); D21H 21/20 (2013.01); D21H 21/24 (2013.01)

Citation (search report)

See references of WO 9934059A1

Designated contracting state (EPC)

BE DE ES FR GB IT NL SE

EPO simple patent family

WO 9934059 A1 19990708; AR 018261 A1 20011114; AU 1632799 A 19990719; AU 747655 B2 20020516; CA 2316876 A1 19990708; CO 5070724 A1 20010828; CR 5940 A 19990728; EG 21895 A 20020430; EP 1044300 A1 20001018; JP 2002500288 A 20020108; PE 01542000 A1 20000229; TW 573696 U 20040121; ZA 9811718 B 19990624

INPADOC legal status


2007-07-20 [REG HK WD] APPLICATIONS WITHDRAWN, DEEMED TO BE WITHDRAWN, OR REFUSED AFTER PUBLICATION IN HONG KONG

- Document: HK 1031747

2005-09-21 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20050319

2004-10-27 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20040908

2000-10-18 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000718

2000-10-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): BE DE ES FR GB IT NL SE