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US 9,475,620 B2Granted
Closure
AssigneeCrown Packaging Technology, Inc.
InventorsAndrew John Wallis, Graham Martin Gossedge
Life of this patent
Estimating the term…
Abstract
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.
Claims22
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.
A closure for a container comprising:
- a metal annular component having:
- an inner peripheral curl that defines an access opening for the container, the access opening defining a plane;
- and
- a sealing panel disposed radially outward from the inner peripheral curl, the sealing panel configured to bond with a peelable lidding material, the sealing panel having a radial width and defining a radially inner portion that extends from proximate the inner peripheral curl for one quarter of the radial width of the sealing panel, the radially inner portion comprising a 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, wherein the sealing panel is tiltable about the hinge relative to the plane.
1 more element
Dependencies are inferred from the claim text.