METHOD AND DEVICE FOR MANUFACTURING PACKAGING PAPER Russian patent published in 2018 - IPC D21D1/20 

FIELD: container and packing.

SUBSTANCE: method of manufacturing a packaging paper, in particular a bagged kraft paper, in which, in the preparation of pulp, the suspension of the fibrous material is concentrated to a solids concentration in the range of from about 30 % to about 35 % before the high-consistency grinding, after the high consistency milling, the suspension of the fibrous material undergoes a low consistency grinding at a solids concentration in the range of about 1 % to about 3 % by papermaking with a mass density of <0.5 %, in particular with a mass density in the range of about 0.15 % to about 0.25 %, slurry of the fibrous material for dewatering and forming a web of fibrous material is applied to a long net of a long-length former or hybrid driver in a long grid, in particular in the initial region of sheet formation, shaking movements are excited, and the web formed of the fibrous material is further dewatered in the press section and dried in the drying section.

EFFECT: method of manufacturing a packaging paper.

11 cl, 2 dwg