MIT EINEM FLASCHENBEHÄLTNIS ZUSAMMENWIRKENDE VERSCHLUSSKAPPE

A closure cap ( 1 ) which interacts with a bottle vessel ( 4 ), a latching projection ( 5 ) being formed on a bottle neck ( 3 ) of the bottle vessel ( 4 ), and an engage-under projection ( 6 ') being formed on the closure cap ( 1 ), an insert part ( 2 ) furthermore being coordinated to the closure cap ( 1 ), said insert part ( 2 ) is fastenable to the bottle neck ( 3 ), and the closure cap ( 1 ), which is knockable on to the insert part ( 2 ), is unscrewable from the insert part ( 2 ), and wherein the insert part ( 2 ) has means for holding on the bottle neck ( 3 ) in a manner secured against rotation, the latching projection ( 5 ) is formed as a screw thread on the insert part ( 2 ), and for childproof holding of the closure ( 1 ) on the insert part ( 2 ), the insert part ( 2 ) or the bottle neck ( 3 ), in a region of a pedestal step ( 31 ), has a latching shaped-out portion ( 30 ) which interacts with a mating projection or a recess on the closure cap ( 1 ).