Disclosed is a container made of a plastic material, provided with a base including a standing ring forming a support flange and a diaphragm extending from the standing ring to a central portion, the diaphragm being capable of standing in an outwardly-inclined position. The diaphragm connects to the standing ring at an outer junction forming an outer articulation of the diaphragm. The diaphragm connects to the central portion at an inner junction forming an inner articulation of the diaphragm. The diaphragm is invertible with respect to the standing ring from the outwardly-inclined position to an inwardly-inclined position. In the outwardly-inclined position, the diaphragm has an outer curved portion and an inner curved portion of opposite curvatures.

A refillable container including a base having a standing surface surrounding a push-up portion. The push-up portion includes a central portion at a center of the base that is recessed inward from a plane extending across the standing surface. A longitudinal axis of the container extends from a first end of the container to a second end through the central portion. A linear portion of the base extends radially outward from the central portion towards the standing surface of the base. The base is configured to reduce stress crack failures.

Plastic container (110), including a side wall (120) and a flexible portion (132) of a base (130). The flexible portion of the base deflects when the sealed plastic container experiences a differential pressure. The deflection of the flexible portion of the base acts to change the internal volume of the container and thereby reduce the differential pressure. The container is a retortable container. The container may be injection-molded with inner and outer plastic layers (460,462) and a core layer (464) between the inner and outer plastic layers.

The present invention is a pressure reduction-absorbing bottle having a cylindrical shape with a bottom made of a synthetic resin material in which a bottom wall portion of a bottom portion of the bottle includes a grounding portion, a rising circumferential wall portion, a movable wall portion, and a central wall portion, the movable wall portion includes a curved portion having a curved surface shape protruding downward, the curved portion is connected to an outer end portion of the central wall portion in a bottle radial direction, and a lowest portion of the curved portion positioned at a lowest position thereof is located at a portion of the curved portion further outward in the bottle radial direction than a central position of the curved portion in the bottle radial direction.

A plastic container comprises an upper portion including a finish defining an opening into the container, a lower portion including a base defining a standing surface, a sidewall extending between the upper portion and the lower portion, the sidewall defining a longitudinal axis, and at least one substantially transversely-oriented pressure panel located in the lower portion. The pressure panel is movable between an outwardly-inclined position and an inwardly-inclined position to compensate for a change of pressure inside the container. The standing surface defines a standing plane, and the entire pressure panel is located between the standing plane and the upper portion of the container when the pressure panel is in the outwardly-inclined position.

A plastic container comprises an upper portion including a finish defining an opening into the container, a lower portion including a base defining a standing surface, a sidewall extending between the upper portion and the lower portion, the sidewall defining a longitudinal axis, and at least one substantially transversely-oriented pressure panel located in the lower portion. The pressure panel is movable between an outwardly-inclined position and an inwardly-inclined position to compensate for a change of pressure inside the container. The standing surface defines a standing plane, and the entire pressure panel is located between the standing plane and the upper portion of the container when the pressure panel is in the outwardly-inclined position.

A blow-molded container including a finish and a base. The finish defines an opening at a first end of the container that provides access to an internal volume. The base includes a diaphragm and a standing surface. The diaphragm extends radially outward from a central push-up portion. The standing surface of the container is at a second end of the container. In response to an internal vacuum caused by hot-filling and closing the container, the diaphragm is configured to move passively from an as-blown first configuration to a second configuration in which the diaphragm is closer to the first end of the container as compared to the as-blown first configuration. The diaphragm is configured to move from the second configuration to an activated third configuration in which the diaphragm is closer to the first end of the container in response to the diaphragm being externally actuated by a tool.

Container (1) made of a plastic material, provided with a base (7) including a standing ring (8) forming a support flange (9) and a diaphragm (11) extending from the standing ring (8) to a central portion (10), the diaphragm (11) being capable of standing in an outwardly-inclined position. The diaphragm (11) connects to the standing ring (8) at an outer junction (12) forming an outer articulation of the diaphragm (11). The diaphragm (11) connects to the central portion (10) at an inner junction (13) forming an inner articulation of the diaphragm (11). The diaphragm (11) is invertible with respect to the standing ring (8) from the outwardly-inclined position to an inwardly-inclined position. In the inwardly-inclined position, at least an inner portion (16) of the diaphragm (11) adjacent to the inner junction (13) is curved in radial section, with a concavity turned outwards.

Base includes an outer support wall, a support surface extending inwardly from the outer support wall and defining a reference plane, an inner support wall extending upwardly from the support surface, a first radiused portion extending radially inward from the inner support wall and concave relative to the reference plane, a second radiused portion extending radially inward from the first radiused portion and convex relative to the reference plane, an intermediate surface extending radially inward from the second radiused portion, a third radiused portion extending radially inward from the intermediate surface and convex relative to the reference plane, and a central portion disposed proximate the third radiused portion.

Plastic container (110), including a side wall (120) and a flexible portion (132) of a base (130). The flexible portion of the base deflects when the sealed plastic container experiences a differential pressure. The deflection of the flexible portion of the base acts to change the internal volume of the container and thereby reduce the differential pressure. The container is a retortable container. The container may be injection-molded with inner and outer plastic layers (460,462) and a core layer (464) between the inner and outer plastic layers.