A process for preparing sized paper and paperboard

Details A process for preparing sized paper and paperboard A process for preparing sized paper and paperboard

D - Textiles, Paper

21

H

D21H 23/24 (2006.01) D21H 17/28 (2006.01) D21H 17/33 (2006.01) D21H 21/16 (2006.01) D21H 21/54 (2006.01) D21H 17/72 (2000.01)

Patent

CA 2524999

This invention relates to a process for preparing sized paper and paperboard which incorporates in the paper and paperboard at the size press size a composition comprising one or more "hydrophobic polymers" wherein hydrophobic polymers, the amount of such polymers and the weight ratio of starch to such polymer in the composition are selected such that the paper and paper board exhibits a Cobb Value equal to or less than about 25 and to a sized paper or paperboard web formed by the process.

L'invention concerne un procédé de production de papier et de carton collés qui incorpore au papier et au carton dans la presse d'encollage une composition qui comprend un ou plusieurs <= polymères hydrophobes >=. Les polymères hydrophobes, leur quantité et le rapport en poids entre l'amidon et ces polymères dans la composition sont sélectionnés de sorte que le papier et le carton présentent une valeur de Cobb égale ou inférieure à 25 environ. L'invention concerne également une feuille de papier ou de carton collé produite par ce procédé.

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