Method for treating a paper pulp with an enzyme solution
AssigneeLa Cellulose Du Pin
InventorsJean-Luc Fuentes, Michel Robert
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Abstract
An enzyme preparation containing cellulases and/or hemicellulases is reacted on a homogeneous aqueous suspension of paper pulp having a Schopper-Riegler (SR) degree determined in accordance with standard NFQ 50 003 of at least equal to 25. A paper pulp based on recycled fibers is treated.
Claims9
A method for treating a papermaking pulp for use with a conventional paper machine to make a sheet of paper, with an enzyme preparation, comprising treating a homogeneous aqueous suspension of said papermaking pulp having a Schopper-Riegler degree (SR) determined in accordance with standard NFQ 50 003 of at least equal to 25 prior to treatment with an enzyme preparation containing an enzyme selected from the group consisting of cellulases, hemicellulases and mixtures thereof using a concentration of said enzyme suitable to thereby obtain a lowering of the SR degree and improve the suspension's drainability while at the same time having no undesirable effect on the mechanical characteristics of paper manufactured from such pulp.
Dependencies are inferred from the claim text.