Container closure structure

Details Container closure structure Container closure structure

1979-06-11

1980-07-08

Hall, George T.

Receptacles

Closures

Removable closure retained by adhesive or fusion means

220 85B, 229 35MF, 229 43, B65D 4100

Patent

active

042113385

ABSTRACT:
A flexible container closure, which is preferably formed of a metallic foil, is disclosed. This closure has a generally planer peripheral surface which may be sealed by either adhesive bonding or heat sealing to a container body. The closure includes an initially inwardly concave central portion which, in combination with the container walls, defines the container volume. This inwardly concave portion is capable of deformation upon increased pressure within the container to increase the volume of the container and reduce the internal pressure therein. By employing the closure structure of the present invention, the chances of leakage failure in the seal between the closure and the container body is substantially reduced.

REFERENCES:
patent: 3519439 (1970-07-01), Dunn
patent: 3850340 (1974-11-01), Siemonsen et al.

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