Composite retortable closure

Details Composite retortable closure Composite retortable closure

1988-02-29

1989-03-21

Norton, Donald F.

Bottles and jars

Closures

Frangible member or portion

215276, B65D 4134

Patent

active

048135615

ABSTRACT:
A closure is described for sealing retortable containers. The closure has a disc shaped metal cover with a grooved sealing portion at its outer edge containing a sealant and a plastic ring for engaging the container. A clamping action holds sealant in the cover groove against a rim of the container and the relative dimensions of the closure groove and the container are chosen for providing a tight seal particularly after retorting.

REFERENCES:
patent: 3504818 (1970-04-01), Crisci
patent: 4093094 (1978-06-01), Smalley et al.
patent: 4478343 (1984-10-01), Ostrowski
patent: 4592476 (1986-06-01), Yasada
patent: 4694969 (1987-09-01), Granat
patent: 4694970 (1987-09-01), Hayes

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