B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
190/78, 190/34.4
B65D 1/00 (2006.01) B65D 1/26 (2006.01)
Patent
CA 1036517
ABSTRACT OF THE DISCLOSURE The invention relates to a container for carbonated beverages, the container being generally of inverted frusto- conical shape and which is nestable with other similar containers. It is circular in cross-section over the majority of its height from a top peripheral flange to a base portion. The base portion is designed basically by hemispherical shell on which are formed foot portions on which the container can stand. When a carbon- ated beverage is sealed in the container, the gas in the carbonated beverage will cause the internal pressure in the container to increase with the passage of time, so that the plastics material of the container will "creep". As creeping takes place, the central region of the base portion moves downwards, said downward movement being resisted by strap portions. The downward movement of the central region of the base portion increases the volume of the container and thereby decreases the pressure in the container. The strap portions restrict the downward movement of the central region of the base portion and thereby restrict the deformation of the foot portions of the container. Excess deformation of the foot portions is undesirable as it will cause a container to be unstable. The volumetric increase of the container obtained by the deformation of the foot portions will tend to prevent bursting of the container due to pressure increased therein.
230108
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