INCREASED PAPER STRENGTH BY SURFACE TREATMENT

摘要

INCREASING PAPER RESISTANCE BY SURFACE TREATMENT This process for treating the surface of paper, and / or at least one of its layers, comprises the following successive steps: i) Supplying an aqueous suspension S of polysaccharide, ii) Supplying a aqueous dispersion D comprising (a) particles of at least one anionic water-swellable polymer P and (b) at least one compound chosen from an inorganic salt, an organic salt, an organic dispersing polymer and their mixtures, iii) Mix the suspension S and of dispersion D, to obtain a mixture M, iv) Apply the mixture M to the surface of the paper, and / or of its layers.