Composition and method for paper processing

Details Composition and method for paper processing Composition and method for paper processing

D - Textiles, Paper

21

H

D21H 21/10 (2006.01) D21H 23/14 (2006.01) D21H 17/37 (2006.01) D21H 17/68 (2006.01)

Patent

CA 2666992

According to the present invention, a process is provided for making paper or board comprising forming a cellulosic suspension that may or may not comprise a filler, flocculating the cellulosic suspension, draining the cellulosic suspension on a screen to form a sheet, wherein the cellulosic suspension is flocculated using a flocculation system comprising the sequential or simultaneous addition of a siliceous material and an organic, cationic or anionic, water-in-water or dispersion micropolymer in a salt solution.

Selon la présente invention, un procédé est proposé pour fabriquer du papier ou du carton, le procédé comportant la formation d'une suspension de cellulose qui peut, ou non, comprendre un remplisseur, la floculation de la suspension de cellulose, l'écoulement de la suspension de cellulose sur un écran pour former une feuille, la suspension de cellulose étant floculée en utilisant un système de floculation comprenant l'addition séquentielle ou simultanée d'une matière silicée et d'un micropolymère organique, cationique ou anionique, eau-dans-l'eau ou en dispersion dans une solution saline.

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