Container with dynamic base

A plastic container comprising:

• a container body comprising a bottom portion, an upper portion, a sidewall portion extending between said upper portion and said bottom portion, and a finish portion, said container body having a chamber defined therein, said finish portion extends from said upper portion and defines a mouth in fluid communication with said chamber;
• said bottom portion including a base portion comprising:
• a support surface;
• a plurality of ribs;
• a plurality of voids;
• and,
• an inner core aligned with a central axis of said container body, said inner core including a contoured wall portion, a first radiused wall portion adjacent said contoured wall portion, and a second radiused wall portion adjacent said first radiused wall portion;
• wherein said base portion further comprises a step portion between a first hinge point adjacent the support surface and a second hinge point;
• wherein said plurality of ribs and said plurality of voids are arranged radially relative to said inner core;
• and,
• wherein said bottom portion is configured to permit said support surface to move downwardly and away from said upper portion in response to an increase in internal pressure differential after filling with a heated fluid and capping, and upwardly and closer to said upper portion in response to a decrease in internal pressure differential after cooling the heated fluid.

A plastic container comprising:

• a container body comprising a bottom portion, an upper portion, a sidewall portion extending between said upper portion and said bottom portion, and a finish portion, said container body having a chamber defined therein, said finish portion extends from said upper portion and defines a mouth in fluid communication with said chamber;
• said bottom portion including a base portion comprising:
• a support surface;
• a plurality of ribs;
• a plurality of voids;
• and,
• an inner core aligned with a central axis of said container body, said inner core including a contoured wall portion, a first radiused wall portion adjacent said contoured wall portion, and a second radiused wall portion adjacent said first radiused wall portion;
• wherein the support surface extends towards said upper portion as it extends away from said inner core and a point of the support surface closest to the central axis is at a distance D1;
• wherein said base portion further comprises a step portion between a first hinge point adjacent the support surface and a second hinge point;
• wherein said plurality of ribs and said plurality of voids are arranged radially relative to said inner core;
• wherein said bottom portion is configured to permit a region of the support surface to move downwardly in response to an increase in internal pressure differential after filling with a heated fluid and capping, and upwardly in response to a decrease in internal pressure differential after cooling the heated fluid;
• wherein, during the increased internal pressure differential, the second radiused wall portion remains at a distance from a reference plane defined by the support surface;
• and,
• wherein, during the decreased internal pressure differential, the support surface extends towards said upper portion as it extends towards said inner core and has the point of the support surface closest to the central axis is at a distance D3 with distance D3 being greater than distance D1.