Method for production of coated paper with extreme whiteness

Details Method for production of coated paper with extreme whiteness Method for production of coated paper with extreme whiteness

D - Textiles, Paper

21

H

D21H 23/22 (2006.01) D21H 21/30 (2006.01) D21H 23/30 (2006.01) D21H 23/76 (2006.01) D21H 19/12 (2006.01) D21H 19/82 (2006.01)

Patent

CA 2456934

The invention relates to a method for the production of a paper coated with a slip containing an optical brightener, whereby raw paper or pre-coated paper is treated with at least one substance which reinforces the efficacy of optical brighteners, before application of the slip containing the optical brightener.

Procédé de fabrication de papier couché à l'aide d'au moins une pâte de couchage contenant un azurant optique, qui consiste à traiter du papier brut ou précouché à l'aide d'une substance qui renforce l'efficacité de l'azurant optique, avant l'application de la pâte de couchage contenant l'azurant optique.

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