Linerless closure for pressurized container

Details Linerless closure for pressurized container Linerless closure for pressurized container

B - Operations, Transporting

65

D

206/40

B65D 41/04 (2006.01) B65D 41/34 (2006.01)

Patent

CA 1114781

ABSTRACT OF THE DISCLOSURE A linerless plastic closure is disclosed which is adapted to seal containers fro pressurized contents such as carbonated beverages and which utilizes a plug configuration that is designed to expand under pressure. This is accomplished by making the plug in the form of a disc spring washer with tubular supports joining it to the top of the closure. Pressure against the disc spring washer increases the pressure of the seal against the interior surface of the bottle mouth to provide a reliable seal. The closure may have a slot through the threads on the closure to permit rapid escape of gases from the con- tainer during removal of the closure from the container. In this way, dangerous blow-off of the closure from a container is substantially eliminated.

342934

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