EP 3350368 A1 20180725 - METHOD FOR PRODUCING NANOFIBRILLAR CELLULOSE
Title (en)
METHOD FOR PRODUCING NANOFIBRILLAR CELLULOSE
Title (de)
VERFAHREN ZUR HERSTELLUNG VON NANOFIBRILLÄRER CELLULOSE
Title (fr)
PROCÉDÉ DE PRODUCTION DE CELLULOSE NANOFIBRILLAIRE
Publication
Application
Priority
- FI 20155666 A 20150916
- FI 2016050643 W 20160916
Abstract (en)
[origin: WO2017046455A1] In a method for producing nanofibrillar cellulose starting from cellulose pulp (P), where cellulose is in native form, the cellulose pulp is prebeaten by circulating it in form of aqueous suspension of fibres through a refining gap (G) formed by opposite arrays of refining bars which perform relative movement in the gap. The cellulose pulp is circulated until a beating degree of below 55 ml CSF, preferably 50 ml CSF or less, more preferably 20 ml CSF or less is attained. The prebeaten pulp is forwarded to a disintegration process (2), where the prebeaten pulp is disintegrated to nanofibrillar cellulose (NFC).
IPC 8 full level
D21C 9/00 (2006.01); D21D 1/20 (2006.01); D21H 11/16 (2006.01); D21H 11/18 (2006.01)
CPC (source: EP FI)
D21C 9/00 (2013.01 - EP); D21C 9/007 (2013.01 - FI); D21D 1/02 (2013.01 - EP FI); D21D 1/20 (2013.01 - EP FI); D21H 11/16 (2013.01 - EP FI); D21H 11/18 (2013.01 - EP FI)
Citation (search report)
See references of WO 2017046455A1
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2017046455 A1 20170323; EP 3350368 A1 20180725; EP 3350368 B1 20201104; FI 128901 B 20210226; FI 20155666 A 20170317
DOCDB simple family (application)
FI 2016050643 W 20160916; EP 16779156 A 20160916; FI 20155666 A 20150916