Patent ID: 8672159

Claim:
A hollow vacuum packaging product, comprising: a ring having a plurality of threads distributed around a periphery of the ring, wherein a sealing cap is configured to enter into engagement with the packaging product between one or more of the threads of the ring when the hollow product is opened/closed, wherein in an evacuated closed condition of the hollow product, the sealing cap is configured to enter into engagement only in an interval between two consecutive threads or in plural such consecutive intervals, the interval defining a gap extending between the two consecutive threads or in plural such consecutive intervals, and wherein the sealing cap does not enter into engagement in all of the intervals between each of the plurality of threads, wherein the interval(s) in which the sealing cap is configured to enter into engagement in the evacuated closed condition of the hollow product are located only in one half of a periphery of the ring, on a first side of a joint plane of a mold.