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US 8,945,347 B2Granted
Method for mechanical pulp production
AssigneeCentre Technique De L'industrie Des Papiers, Cartons Et Celluloses
InventorsMichel Petit-Conil, J. Mark A. Hoddenbagh, Jeffrey S. Tolan
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Abstract
A method of producing hardwood pulp is provided. This method comprises treating hardwood chips with one or more than one Family 11 xylanase enzyme in the absence of adding an oxidizing enzyme for about 5 minutes to about 120 minutes, to produce a treated chip mixture. The treated chip mixture is then mechanically refined to produce the hardwood pulp.
Claims19
A method of producing hardwood pulp comprising:
- (a) treating hardwood chips with a Family 11 xylanase enzyme from Trichoderma in the absence of adding an oxidizing enzyme for about 5 minutes to about 120 minutes, to produce a treated chip mixture;
- and thereafter
- (b) mechanically refining the treated chip mixture to produce the hardwood pulp,
- wherein the refining energy used in the mechanically refining step (b) is 10% to 50% less than the refining energy on a hardwood chip mixture not previously treated with a Family 11 xylanase enzyme from Trichoderma.
1 more element
Dependencies are inferred from the claim text.