CONTAINER BASE STRUCTURE

摘要

A plastic container (10) having a base portion (14) adapted for vacuum absorption. The base portion including a ring (26) upon which the container is supported, an upstanding wall (30) and a recessed portion (28). The upstanding wall being adjacent to and generally circumscribing the contact ring. The recessed portion being defined in at least part by a flat base region (32) and a central base region (34). The flat base region exending from the upstanding wall toward a longitudinal axis of the container. The flat base region defining a projected surface area of at least 45% of a total projected surface area of the container. The flat base region being moveable to accommodate vacuum forces within said container.