PAPER FOR PACKING OF LIQUIDS Russian patent published in 2019 - IPC D21H27/10 D21H27/30 D21H25/04 D21H11/04 D21H19/84 

FIELD: packaging industry.

SUBSTANCE: invention relates to paper for packaging of liquids. Kraft paper, grammage of which is 65–85 g/m² in accordance with ISO 536, wherein the Bendtsen roughness of at least one side of the paper is less than 300 ml/min in accordance with ISO 8791-2, and the bending resistance of the paper according to ISO 2493-1, divided by the thickness of the paper in accordance with ISO 534, is at least 0, 65 mN/mcm, wherein resistance to bending is measured at angle of bend 15° and bending length of 10 mm.

EFFECT: higher bending strength and lower surface roughness, which improves printing properties.

15 cl, 2 tbl, 1 ex