Repulping paper and paperboard

Details Repulping paper and paperboard Repulping paper and paperboard

D - Textiles, Paper

21

C

D21C 5/02 (2006.01) D21C 3/00 (2006.01)

Patent

CA 2105412

A process for repulping a paper product composed of cellulose fibers, particularly for repulping paper containing wet strength resins, comprising slurrying the paper in an aqueous solution of a non-chlorinating oxidizing agent and a water-soluble buffering salt that maintains a pH of from 7 to 12 during the repulping operation, and a composition for use in the process.

Procédé de rétrituration de produits de papier composés de fibres de cellulose, particulièrement pour la rétrituration de papier contenant des résines résistantes humides. Le procédé consiste à réduire le papier en bouillie dans une solution aqueuse d'agents oxydants non chlorés et de sel tampon soluble qui maintient un ph entre 7 et 12 pendant l'opération de rétrituration. L'invention porte aussi sur un composé pouvant être utilisé dans le cadre de ce procédé.

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