Patent ID: 8562787

Claim:
A method for manufacturing paper, in which cationic polymers comprised of polyacrylamide and a fine-particle inorganic component are added to paper pulp following a final shearing step and prior to a headbox, whereupon the paper pulp is subjected to dehydration while forming sheets, followed by sheet drying, characterized in that an alkali-activated bentonite having a silicon dioxide content of less than 2% by weight, in particular an alkali-activated bentonite essentially completely consisting of montmorrillonite, is used as said fine-particle inorganic component and that a polymer mixture comprising a linear cationic polymer, namely a polydiallyl dimethyl ammonium chloride having a cationic charge of about 6 mol per kg dry product and a linear anionic copolymer, whose overall ionicity is anionic, namely a copolymer of acrylamide and sodium acrylate at a molar ratio of acrylamide to sodium acrylate of 50:50 to 70:30 and an anionic charge of about 4 mol per kg dry product, is additionally added immediately prior to the headbox.