EP 1268927 B1 20051026 - A PROCESS FOR PRODUCTION OF PAPER MATERIALS WITH IMPROVED WET STRENGTH
Title (en)
A PROCESS FOR PRODUCTION OF PAPER MATERIALS WITH IMPROVED WET STRENGTH
Title (de)
Verfahren zur Herstellung von Papiermaterialien mit verbesserter Na festigkeit
Title (fr)
PROCEDE DE PRODUCTION DE MATERIAUX DE TYPE PAPIER PRESENTANT UNE RESISTANCE A L'HUMIDITE AMELIOREE
Publication
Application
Priority
- DK 0000118 W 20000316
- DK PA199900611 A 19990506
Abstract (en)
[origin: WO0068500A1] The present invention relates to a process for production of paper materials with improved wet strength, comprising: (a) preparing a suspension of unbleached or semi-bleached chemical or semichemical pulp or pulp from recycled fibres; (b) treating the pulp with a phenol oxidizing enzyme and a mediator; and (c) de-watering the treated pulp in a paper making machine to remove process water and produce the paper material. Preferably the paper material is heated after the completion of step (c). Further, the invention relates to a process for producing corrugated paperboard or corrugated containers and to the use of a phenol-oxidizing enzyme in combination with a mediator to produce a paper material with improved wet strength. By the process of the invention the wet strength of paper materials can be improved without using wet strength resins which makes the product more easily re-used.
IPC 1-7
IPC 8 full level
D21C 9/00 (2006.01); D21H 21/20 (2006.01); D21H 25/02 (2006.01); D21H 11/14 (2006.01); D21H 17/00 (2006.01); D21H 17/09 (2006.01); D21H 17/15 (2006.01)
CPC (source: EP)
D21H 21/20 (2013.01); D21H 25/02 (2013.01); D21H 11/14 (2013.01); D21H 17/005 (2013.01); D21H 17/09 (2013.01); D21H 17/15 (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
DOCDB simple family (publication)
WO 0068500 A1 20001116; AT E307924 T1 20051115; AU 3273600 A 20001121; AU 766409 B2 20031016; BR 0010310 A 20020213; CA 2372499 A1 20001116; CA 2372499 C 20091013; CN 1349577 A 20020515; DE 60023563 D1 20051201; DE 60023563 T2 20060727; EP 1268927 A1 20030102; EP 1268927 B1 20051026; JP 2002544403 A 20021224
DOCDB simple family (application)
DK 0000118 W 20000316; AT 00910574 T 20000316; AU 3273600 A 20000316; BR 0010310 A 20000316; CA 2372499 A 20000316; CN 00807245 A 20000316; DE 60023563 T 20000316; EP 00910574 A 20000316; JP 2000617265 A 20000316