Container with vacuum accommodating end

Details Container with vacuum accommodating end Container with vacuum accommodating end

B - Operations, Transporting

21

D

113/41

B21D 51/44 (2006.01) B21D 53/00 (2006.01) B65B 7/28 (2006.01) B65D 3/14 (2006.01) B65D 8/04 (2006.01) B65D 8/12 (2006.01)

Patent

CA 1217978

ABSTRACT OF THE DISCLOSURE 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.

442635

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