ANTI-SKID HEAT-RESISTANT PLASTIC FLEXIBLE PACKING BAG, AS WELL AS METHOD AND DEVICE FOR PRODUCTION THEREOF Russian patent published in 2020 - IPC B65D33/00 

FIELD: package and storage.

SUBSTANCE: anti-slip heat-sealing plastic packing bag (16) is made of anti-slip flexible packing material (35), which contains heat-sealable plastic flexible wall (45) having outer surface (46), average surface density of at most 500 g/m². In rough part (47) of wall (45), packaging material (35) comprises a plurality of separate antiskid projections (7) from a first substance randomly distributed on outer surface (46) and protruding therefrom to protrusion height (11) of 50–10,000 mcm, with average aspect ratio of multiple anti-slip projections (7) in top view making at least 1.0 and at most 5.0. Some of antiskid projections (7) have hidden part (12) of surface, which is part of free surface of anti-skid protrusion (7), which ledge (7) closes from viewer on top view of wall (45). Plurality of antiskid projections (7) face outer side (18) of packing bag (16). First substance is a thermoplastic polymer. Outer surface (46) consists of a second substance different from said first substance. First substance has a melt flow rate of at least 0.6 g/10 min, determined at 190 °C under load of 2.16 kg in accordance with ISO 1133-1 standard.

EFFECT: group of inventions provides production of plastic bags with good anti-skid properties, which have the possibility of stacking bags on each other on a pallet.

24 cl, 10 dwg, 1 tbl, 5 ex