Table drainage and press dewatering when cellulose nanofibers are applied on the wet end, PaperCon2017

Before cellulose nanofibers (CNF) can be used in paper furnishes or as a surface layer, the drainage characteristics of pulps that contain CNF must be determined.  In addition, the influence of CNF addition on pressing needs to be understood.   CNF was added to pulp furnishes at various levels and also applied as a curtain to the just formed web on the drainage table on a pilot paper machine.  The couch solids and the final press solids, for various nip pressures is obtained.  The final press solids is also predicted from an equation in the literature.  In some cases, CNF addition is found to increase press solids instead of decreasing it.  

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