Container with vacuum accommodating end

Details Container with vacuum accommodating end Container with vacuum accommodating end

1983-04-25

1984-07-10

Shoap, Allan N.

Package making

Methods

With contents treating

53440, 53471, 53487, 72379, 220 66, 413 8, B65B 728, B21D 5300, B65D 812

Patent

active

044584695

ABSTRACT:
In a container for accommodating hot liquid fills, an end closure capable of inward deflection in response to a decrease in internal pressure created by thermal contraction as the liquid fill cools. The closure is formed of conventional metal stock and includes, as formed, a central portion domed to define either a concave configuration or a convex configuration as viewed from the exterior of the container. The domed portion, as a step or steps prior to filling, is predeflected, either once or twice depending upon its initial configuration, to arrive at an outwardly domed configuration preparatory to inward deflection in response to the cooling of the product and for the accommodation of an internally generated vacuum.

REFERENCES:
patent: 1987817 (1935-01-01), Burns
patent: 2894844 (1959-07-01), Shakman
patent: 3105765 (1963-10-01), Creegan
patent: 3152711 (1964-10-01), Mumford et al.
patent: 3160302 (1964-12-01), Chaplin
patent: 3369689 (1968-02-01), Dodge
patent: 3736899 (1973-06-01), Manske
patent: 4286745 (1981-09-01), Fukuoka

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