Closure

摘要

This invention relates to an improved closure in the form of an annular component (2) closed by a peelable lidding material (9). More particularly, it relates to a closure which, in use on a container, is better able to respond differential pressure changes whilst also providing peelability.

主权项

1. A closure for a container, the closure comprising:
a metal annular component, the annular component having a sealing panel adapted to support a lid of peelable lidding material bonded to the sealing panel to thereby define an annular bond region, the annular component terminating in an inner peripheral curl extending from the sealing panel to define an access opening for the container, the sealing panel being adjustably tiltable relative to a plane generally defined by the access opening under action of a differential pressure acting on an area of the lid, characterised in that the sealing panel has radial inner and outer annular portions, the radial inner portion extending from the radial inside edge of the sealing panel for one quarter of a radial width of the sealing panel, and the radial outer portion extending for a remaining radial width of the sealing panel, the radial inner portion of the sealing panel having a circumferential hinge, the circumferential hinge defined by one or more annular bands, the one or more annular bands being thinned relative to surrounding material of the sealing panel.