CLOSURE CAP WITH BRAKING STRUCTURE

摘要

A closure (26) for a container having a threaded finish portion, with a braking structure to resist unscrewing of the closure and thereby provide sufficient time for any gases within the container to vent. The braking structure comprises a restrictor means (44) located adjacent to the leading edge (43) of the closure thread (42) and arranged such that the container thread is squeezed between the restrictor means and the axially adjacent portion of the closure thread. The restrictor means provides braking with a minimum of radial force being exerted on the closure.