Method for production of paper

Details Method for production of paper Method for production of paper

D - Textiles, Paper

21

H

D21H 21/10 (2006.01) D21H 17/44 (2006.01) D21H 17/68 (2006.01) D21H 17/37 (2006.01) D21H 23/14 (2006.01)

Patent

CA 2393242

The invention relates to a method for the production of paper or board, wherein retention aids are added to the stream of stock. Improved retention and more effective dewatering are achieved by adding to the stream of stock a cationic polymer solution and a suspension-form microparticle mixture composed of a swellable clay of the smectite group and a colloidal synthetic metal silicate in which the prevalent cation is magnesium.

L'invention concerne un procédé de production de papier ou de carton, dans lequel des agents de rétention sont ajoutés au flux de pâte. Une rétention améliorée et un essorage plus efficace est réalisé par ajout au flux de pâte d'une solution polymère cationique et d'un mélange de microparticules sous forme de suspension composée d'argile gonflante du groupe smectite et de silicate de métal synthétique colloïdal dans lequel le cation dominant est un magnésium.

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