Filled paper and method of manufacturing the same

Details Filled paper and method of manufacturing the same Filled paper and method of manufacturing the same

D - Textiles, Paper

21

H

D21H 17/69 (2006.01)

Patent

CA 2601721

This invention provides a filled paper containing a coated filler prepared by coating a filler with a composite acrylamide copolymer (composite PAM) comprising (A) an anionic polysaccharide and (B) a cationic and/or amphoteric acrylamide copolymer. The composite PAM is prepared, for example, by mixing the component (A) with the component (B). Since the filler is treated with a combination of the components (A) and (B) different from each other in charge properties and structure, suitable coagulation effect can be attained and the coated filler has excellent affinity for pulp slurry. Therefore, even in the case of a highly filled paper, a large paper strengthening effect can be attained by using a small amount of the chemical.

L~invention concerne un papier chargé, contenant une charge enduite, préparée par enduction d'une charge avec un composite de copolymère acrylamide (composite PAM) comprenant (A) un polysaccharide anionique et (B) un copolymère acrylamide cationique et/ou amphotère. Le composite PAM est préparé, par exemple, en mélangeant le composant (A) avec le composant (B). La charge étant traitée avec une combinaison des composants (A) et (B), présentant chacun des propriétés de charge et des structures différentes, on obtient un effet de coagulation adapté, et la charge enduite a ainsi une excellente affinité pour la pulpe. Ainsi, même pour un papier hautement chargé, un effet important de renforcement du papier peut être obtenu en utilisant une petite quantité du produit chimique.

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