Container closure with an indicator element

A container closure comprising:

• a base ring which extends around a reference axis of the container closure a closure cap which, in a closed position, covers a mouth of the base ring and, in an open position, provides access to the mouth of the base ring, a hinge which connects the base ring to the closure cap and is integral with the closure cap and the base ring, as well as at least one indicator element which forms a shaped part separate from the base ring and from the closure cap and has at least one actuating portion an indicator portion, and a predetermined breaking point between the actuating portion and the indicator portion wherein the actuating portion has an engaging surface which, in the closed position, is opposite a correspondingly shaped engaging surface of the base ring and counteracts a movement of the closure cap into the open position, wherein the predetermined breaking point is dimensioned such that, when the closure cap is first opened, the engaging surface of the actuating portion engages with the engaging surface of the base ring, limits a movement of the actuating portion relative to the base ring, causes a pulling movement of the indicator portion relative to the closure cap from an initial position to an end position, and only breaks after the end position has been reached, wherein the indicator portion together with the closure cap forms an irreversible backstop which holds the indicator element in the initial position before the first opening and prevents movement of the indicator portion from the end position to the initial position.