Plastic closure unit with an undercut for plastic beer bottles and similar items with a crown top, incorporates two slits, and an opening aid attached to the pull-open tab between the slits

摘要

The plastic closure unit (1) with an undercut for plastic beer bottles and similar items with a so-called crown top incorporates two straight or arcuate slits (3) running from the originality protection strip (5) to the upper zone of the cylindrical section (6) of the unit, and an opening aid (7) attached to the pull-open tab (2) between the slits.