Method for manufacturing paper, cardboard and paperboard...

Details Method for manufacturing paper, cardboard and paperboard... Method for manufacturing paper, cardboard and paperboard...

D - Textiles, Paper

21

H

D21H 21/10 (2006.01)

Patent

CA 2735371

Method for manufacturing paper, cardboard and paperboard by dewatering a paper pulp on a screen in the pre-sence of at least one cationic polymeric retention means and/or retention means system, forming sheets and drying the sheets, wherein prior to the addition of the at least one cationic polymeric retention means and/or retention means system, an endo-.beta.-1,4--glucanase at an amount of 0.00001 to 0.01 wt.-%, relative to the dry pulp, is dosed into the pulp.

L'invention porte sur un procédé de fabrication de papier et de carton par égouttage d'une pâte à papier sur une toile en présence d'au moins un agent de rétention ou système d'agent de rétention polymère cationique, avec formation de la feuille et séchage des feuilles, une endo-ß-1,4-glucanase étant, dans une proportion de 0,00001 à 0,01 % en poids par rapport à la pâte à papier sèche, ajoutée de façon dosée à la pâte à papier avant l'addition du ou des agents de rétention et/ou systèmes d'agents de rétention polymères cationiques.

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