Method for producing paper, card and board with high dry...

Details Method for producing paper, card and board with high dry... Method for producing paper, card and board with high dry...

D - Textiles, Paper

21

H

D21H 17/42 (2006.01) D21H 17/44 (2006.01) D21H 21/18 (2006.01)

Patent

CA 2750671

Method for producing paper, card and board with high dry strength by adding a water-soluble cationic polymer and an anionic polymer to a paper pulp, dewatering the paper pulp and drying the paper products, said anionic polymer comprising an aqueous dispersion of at least one anionic latex and at least one degraded starch.

L'invention concerne un procédé de fabrication de papier, de carton-pâte et de carton présentant une grande résistance à sec, qui consiste à ajouter un polymérisat cationique soluble dans l'eau et un polymérisat anionique à une pâte à papier, à égoutter la pâte à papier et à sécher les produits en papier. On utilise comme polymérisat anionique une dispersion aqueuse d'au moins un latex anionique et d'au moins un amidon dégradé.

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