Patent ID: 6460714
Filing Date: 2002-10-08
Classification: B65D

Abstract:
A sidewall portion of a plastic container for receiving a commodity and retaining the commodity during high temperature pasteurization and subsequent cooling, the container having an upper portion defining an aperture and sealable with a closure, a lower portion forming a base, and a sidewall portion unitarily connected with and extending between the upper portion and the lower portion, wherein the sidewall portion comprises a plurality of generally rectangular shaped recessed panels formed therein and having an average crystallinity above 30%, said recessed panels including a substantially oval shaped pressure panel portion movable from a first inwardly bowed position to a second outwardly bowed position in response to an increase in the pressure of the container generated by high temperature pasteurization of the commodity thereby increasing the volume of the container and avoiding deformation of the sidewall portion, and a generally rectangular shaped vacuum panel portion surrounding said pressure panel portion and movable in response to a reduction in the pressure of the container due to the subsequent cooling of the commodity thereby decreasing the volume of the container.