METHOD OF PRODUCTION OF PAPER OR CARDBOARD Russian patent published in 2014 - IPC D21F1/02 

FIELD: textiles, paper.

SUBSTANCE: invention relates to a method of production of multilayer paper or cardboard product, comprising providing a first headbox with the paper pulp composition comprising fibres, from which at least one layer of paper or cardboard product is formed. Providing a first headbox with nonfibrous composition of high concentration with content of dry matter of 5-70% by weight, of which at least one layer of paper or cardboard product is formed. The direction of the paper pulp composition through the turbulence generator to the first headbox while directing the nonfibrous composition of high concentration to the first headbox without imposition any turbulence to it. The direction of the said layers to at least one mesh conveyor, on which the multilayer web is formed, which is further dewatered and dried to obtain paper or cardboard product.

EFFECT: proposed invention provides the possibility to increase the dry matter content and thus to reduce the need in drying of the obtained product.

9 cl, 1 dwg