Closure cap e.g. pilfer-proof cap, for bottle, has skirt comprising upper and lower cylindrical bodies with slightly different diameters, where bodies are integrated with each other by number of equidistant valve bridges

摘要

The cap has a skirt with an upper cylindrical body (1) having an inner diameter (a) corresponding to the outer diameter of a neck of a recipient at the level of a screw tread, where the diameter (a) is two times more than the thickness of a metal constituting the skirt. A lower cylindrical body (2) has a diameter (b) slightly more than the diameter (a). The bodies are integrated with each other by a number of equidistant valve bridges.