Process for treating hardwood pulp with an enzyme mixture to red

Details Process for treating hardwood pulp with an enzyme mixture to red Process for treating hardwood pulp with an enzyme mixture to red

1996-07-09

1998-03-10

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

057257329

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 hardwood brownstock (unbleached) pulp with a cellulase/xylanase mixture. The use of a pure cellulase enzyme is excluded.

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