Method for fabricating improved retention paper or paperboard

Details Method for fabricating improved retention paper or paperboard Method for fabricating improved retention paper or paperboard

D - Textiles, Paper

21

H

D21H 21/10 (2006.01) D21H 17/37 (2006.01) D21H 17/45 (2006.01) D21H 17/68 (2006.01) D21H 17/74 (1990.01)

Patent

CA 2097127

Procédé pour la fabrication d'un papier ou d'un carton à rétention améliorée, dans lequel on ajoute à la suspension fibreuse un polyacrylamide et de la bentonite, caractérisé en ce que le polyacrylamide est un polyacrylamide ramifié, facilement soluble dans l'eau, et est introduit sous forme de poudre mise en solution à raison de 0,03 à 1,0 pour mille (0,03 à 1,0 %o) en poids du poids sec de la suspension fibreuse.

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