Patent ID: 7004341

Claim:
A composite closure for sealing a container having an outer surface and an opening that is defined by an upper rim, comprising: a sealing disc that is sized and shaped to cover the opening, said sealing disc having a sealing surface on a lower side thereof that is constructed and arranged to contact and form a seal with the upper rim of the container, said sealing disc and said container being engaged so that only said sealing surface engages the container; and securement means for securing said sealing disc on the container, said securement means being heat-shrunk onto the container being securely anchored to the container through frictional engagement, said securement means further comprising a removable upper portion that is frangibly connected to the remainder of said securement means, said removable upper portion comprising disc engaging structure for engaging and lifting the sealing disc away from the upper rim of the container when said removable upper portion of said securement member is removed; said securement means further comprising cam means, interposed between said removable upper portion and the remainder of said securement means, for exerting an upward force on said removable upper portion when said removable upper portion is being removed during opening of the closure.