Security gap for bottles - with breaking piece separating opposite-hand threads

摘要

The thermoplastic cap of a bottle or a can has a main female thread which engages the male thread on the bottle neck. A second female thread of great diameter near the rim of the cap is attached to the main thread by a breaking piece and has a thread of the opposite hand. A corresponding thread is fitted to a collar on the bottle neck. An opening turn on the cap therefore exerts a ripping force on the breaking piece, esp. of the thread on the second (safety) section has a smaller pitch and severs the safety section. The customer is thus ensured that he receives the contents in the original pack.