US Patent 10427853 Container with pressure accommodation area

A container comprising a body portion is provided. The body portion includes a flat upper vacuum panel, a flat lower vacuum panel, and a recess between the flat upper vacuum panel and the flat lower vacuum panel. In response to a change in the internal container pressure, the body portion flexes at the recess towards an interior of the container and the flat upper vacuum panel and the flat lower vacuum panel form a progressively smaller angle at the recess in response to an increasing pressure change.