Method for making a low density multi-ply paperboard with...

Details Method for making a low density multi-ply paperboard with... Method for making a low density multi-ply paperboard with...

D - Textiles, Paper

21

H

D21H 23/10 (2006.01) D21F 1/00 (2006.01) D21F 1/66 (2006.01) D21F 5/00 (2006.01) D21F 11/00 (2006.01) D21H 11/10 (2006.01) D21H 17/28 (2006.01) D21H 27/38 (2006.01)

Patent

CA 2581898

Methods for improving the internal bond strength of paperboard with greater than 25 percent crosslinked fiber in at least one ply are described. In the methods, additives are added to the slurry in various combinations and order while maintaining the ionic demand of the slurry at less than zero. Paperboard with high ZDT, Scott Bond and Taber Stiffness is obtained.

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