EP 2504487 B1 20160720 - METHOD FOR MANUFACTURING NANOFIBRILLATED CELLULOSE PULP AND USE OF THE PULP IN PAPER MANUFACTURING OR IN NANOFIBRILLATED CELLULOSE COMPOSITES
Title (en)
METHOD FOR MANUFACTURING NANOFIBRILLATED CELLULOSE PULP AND USE OF THE PULP IN PAPER MANUFACTURING OR IN NANOFIBRILLATED CELLULOSE COMPOSITES
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER NANOFIBRILLIERTEN ZELLULOSEPULPE UND VERWENDUNG DER PULPE BEI DER PAPIERHERSTELLUNG IN NANOFIBRILLIERTEN ZELLULOSE-VERBUNDSTOFFEN
Title (fr)
PROCÉDÉ DE FABRICATION DE PÂTE À PAPIER À BASE DE CELLULOSE NANO-FIBRILLÉE ET UTILISATION DE PÂTE À PAPIER DANS LA FABRICATION DE PAPIER OU DANS DES COMPOSITES À BASE DE CELLULOSE NANO-FIBRILLÉE
Publication
Application
Priority
- FI 20096233 A 20091124
- FI 2010050897 W 20101105
Abstract (en)
[origin: WO2011064441A1] The invention relates to a method for manufacturing pulp. The manufactured pulp contains at least 30 w-% nanofibrillated cellulose material measured from the dried pulp. The method comprises the following stages: introducing raw material to a system which raw material includes cellulose, dosing at least one type of an optical brightening agent as a refining additive to the system, and refining the raw material in the presence of the dosed optical brightening agent in at least one pre-refining stage or fibrillation stage in order to form fibrillar cellulose material. The invention further relates to a use of the produced pulp in nanofibrillated cellulose composites or in paper or paperboard manufacturing including base paper production and finishing stages, including, for example, paper and paperboard coatings.
IPC 8 full level
D21H 11/18 (2006.01); D21C 9/00 (2006.01); D21D 1/20 (2006.01); D21H 21/30 (2006.01); D21H 21/32 (2006.01)
CPC (source: EP FI US)
D21C 9/005 (2013.01 - FI); D21D 1/20 (2013.01 - FI); D21H 11/18 (2013.01 - EP US); D21H 17/42 (2013.01 - FI); D21H 21/30 (2013.01 - EP FI US); D21H 21/32 (2013.01 - EP US)
Citation (opposition)
Opponent : Stora Enso OYJ
- JP 2007262594 A 20071011 - KIMURA KAKOKI CO LTD, et al
- WO 2008124489 A1 20081016 - AKZO NOBEL NV [NL], et al
- JP 2009019200 A 20090129 - UNIV KYOTO
- WO 2009126106 A1 20091015 - STFI PACKFORSK AB [SE], et al
- US 2007193707 A1 20070823 - NGUYEN XUAN TRUONG [US]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2011064441 A1 20110603; CN 102686799 A 20120919; EP 2504487 A1 20121003; EP 2504487 A4 20140122; EP 2504487 B1 20160720; FI 123289 B 20130131; FI 20096233 A0 20091124; FI 20096233 A 20110525; US 2013000855 A1 20130103
DOCDB simple family (application)
FI 2010050897 W 20101105; CN 201080053197 A 20101105; EP 10832694 A 20101105; FI 20096233 A 20091124; US 201013511956 A 20101105