Process for treating paper machine stock containing bleached har

Details Process for treating paper machine stock containing bleached har Process for treating paper machine stock containing bleached har

1996-10-22

1998-06-23

Alvo, Steven

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Treatment with particular chemical

162134, 435277, 435278, D21H 2502

Patent

active

057700125

ABSTRACT:
The process uses a mixture of cellulases and xylanases to chemically change the hardwood vessel elements, rendering them susceptible to breaking under normal mill refining, thus not requiring any additional refining equipment. The process involves treating bleached hardwood brownstock pulp with the cellulase/xylanase mixture. The use of a pure cellulase enzyme is excluded.

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