Container closure

摘要

The closure includes a pressure equalization element which can be manipulated to expose an aperture (17) in the closure (10) and thereby allow pressure in the headspace of the container to adjust to ambient pressure. The element has an upper member (21a) which overlies the aperture and a lower member (21b) adhered to the underside of the closure so as to lie beneath the aperture and which is connected by a connecting member (27) to the upper member.