COVER WITH IMPROVED CHARACTERISTICS Russian patent published in 2017 - IPC B65D41/34 

FIELD: packaging industry.

SUBSTANCE: invention relates to plastic cover, molded from polymer materials and having improved characteristics, including higher impact strength and resistance. According to one aspect of invention cover comprises upper wall section and annular, lowering down from it bell section, which determines plurality of columns spaced along circumference and passing in axial direction, each of which comprises radially thickened section and formed by set of gripping ribs, made on bell section external surface, wherein each group of gripping ribs has relatively small recesses between adjacent ribs.

EFFECT: wherein there are alternating groups of ribs with relatively small recesses and relatively deep recesses between adjacent ribs of each group.

11 cl, 9 dwg