Method of improving pulp freeness using cellulase and pectinase

Details Method of improving pulp freeness using cellulase and pectinase Method of improving pulp freeness using cellulase and pectinase

1997-08-14

2000-05-23

Nguyen, Dean T.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

162 72, 435277, 435278, D21C 502

Patent

active

060662336

ABSTRACT:
A method for enhancing the freeness of pulp made from secondary fiber is provided by adding an enzymatic mixture comprised of cellulase and pectinase enzymes to the pulp and treating under conditions to cause a reaction to produce an enzymatically treated pulp. The freeness of the enzymatically treated pulp is increased from the initial freeness of the secondary fiber pulp without a loss in brightness.

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