Plastic linerless closure

Details Plastic linerless closure Plastic linerless closure

B - Operations, Transporting

65

D

206/21

B65D 41/04 (2006.01) B65D 53/06 (2006.01)

Patent

CA 1256401

ABSTRACT OF THE DISCLOSURE A plastic linerless closure for sealing a container includes an integrated sealing mechanism forming at least a part of the top of the closure. The sealing mechanism includes a primary sealing region including a primary sealing flange adapted to engage the top of the container neck during application of the closure, an inner sealing region having an outwardly facing sealing surface which i situated contiguous with the inner surface of the container neck during application of the closure to the container neck and a central non-planar, e.g concave,region. The inner sealing region is connected in an integrated manner to the primary sealing region and the central region, and the primary sealing flange is connected to the closure top by a hinge region. In operation, the primary and inner sealing regions as well as the non-planar central region of the integrated sealing mechanism act with mechanical linkage to effect a top seal between the primary sealing flange and the container neck top and an inner seal between the outwardly facing sealing surface of the inner sealing region and the container neck inner surface. -1-

496448

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