PROCEDE SERVANT A DIMINUER LA PERMEABILITE DU PAPIER OU DU CARTON, AINSI QUE SUBSTANCE A UTILISER DANS CE PROCEDE.

摘要

The invention concerns the permeability of paper and board substrate. The permeability of the substrate is reduced by coating it with a modified coating mixture, which is based on a polymer dispersion containing at least one modified starch component. The polymer is prepared preferably by grafting monomers onto the modified starch structure.