A synthetic resin container has improved formability while preventing deformation of corner walls. The synthetic resin container includes a mouth that serves as a dispensing opening for contents, a body that is continuous with the mouth via a shoulder, and a bottom that closes a lower end of the body. The body includes a pair of main walls arranged so as to face each other with a gap therebetween, a pair of side walls arranged so as to face each other with a gap therebetween, and corner walls that couple respective ends in a circumferential direction of the main walls and the side walls. Each corner wall is provided with U-shaped ribs that are formed in a substantially U-shape within a surface of the corner wall and that are concave toward an inner side in a thickness direction of the corner wall.

A hot-fillable plastic container includes a base and a body extending upward from the base. The includes a deformable cylindrical sidewall portion defining a central vertical axis, wherein the deformable cylindrical sidewall portion comprises at least two vertical pillars arranged along the body circumference. Each vertical pillar is joined to the next vertical pillar by a generally concave deformable sidewall panel having a concave arc-shaped transverse cross section of curvature radius. The curvature radii of the vertical pillars are smaller than the curvature radii of the generally concave deformable panels, and each transition between a vertical pillar and a generally concave deformable panel is smooth without any convex portion. The large curvature radius of each generally concave deformable panel allows an inward deformation of each panel, and each pillar is slightly pushed outward and is slightly deformed with a small reduction of its curvature radius, under the vacuum created inside the container by the volume reduction of a hot-filled product during cooling.

A bottle may have varying depth ribs to achieve a balance of strength and rigidity while maintaining hoop strength. The varying depth ribs may smoothly transition around the circumference of the bottle from a flattened and/or shallow depth rib portion to a deep rib portion. A collection of flattened and/or shallow depth ribs act as recessed columns in the body of the bottle to resist bending, leaning, crumbling, and/or stretching. The deep rib portions provide hoop strength and make the bottle body more rigid and/or stiffer when gripped by a user. A balance may be achieved between of flattened and/or shallow depth ribs and deep ribs to attain a desired resistance to bending, leaning, and/or stretching while maintaining stiffness in a lightweight bottle.

A bottle may have varying depth ribs to achieve a balance of strength and rigidity while maintaining hoop strength. The varying depth ribs may smoothly transition around the circumference of the bottle from a flattened and/or shallow depth rib portion to a deep rib portion. A collection of flattened and/or shallow depth ribs act as recessed columns in the body of the bottle to resist bending, leaning, crumbling, and/or stretching. The deep rib portions provide hoop strength and make the bottle body more rigid and/or stiffer when gripped by a user. A balance may be achieved between of flattened and/or shallow depth ribs and deep ribs to attain a desired resistance to bending, leaning, and/or stretching while maintaining stiffness in a lightweight bottle.

A plastic container (1) is provided with a body (5) and a bottom (6) that extends from a lower end of the body (5), the bottom (6) including: a peripheral base (7) defining a bearing surface (8); a concave arch (10) that extends from a central zone (11) to the base (7); and a series of main reinforcing grooves (13) hollowed into the arch, extending radially from the central zone (11) at least to the base (7) and dividing the arch into a series of angular sectors (15). Where each groove (13) joins each sector (15) of the arch (10) adjacent thereto it is bordered laterally by a reinforcing rib (18) projecting in relation to the sector (15).

A container for storing a fluid used in automotives is disclosed. The container has a solid filled side grip area located on a sidewall of the container. The container also uses a bail to facilitate holding of the container. A base grip area is located on the base of the container to also assist in gripping the container. The container is able to hold more oil while using less plastic, which makes the container more ecologically friendly and cost effective than existing containers.

The side wall, extending below a shoulder of the thermoplastic bottle, has a gripping portion formed substantially in the middle of the bottle body and includes a first line and a second line each defined in a vertical symmetry plane. The second line has a second point at minimal distance ds2 between the side wall and the central axis, while the first line has a first point at minimal distance ds1 between the first line and the central axis. For these particular points in the gripping portion: ds2<ds1hs1<hs2 A thick portion is provided at and above the second point.

A bottle may have varying depth ribs to achieve a balance of strength and rigidity while maintaining hoop strength. The varying depth ribs may smoothly transition around the circumference of the bottle from a flattened and/or shallow depth rib portion to a deep rib portion. A collection of flattened and/or shallow depth ribs act as recessed columns in the body of the bottle to resist bending, leaning, crumbling, and/or stretching. The deep rib portions provide hoop strength and make the bottle body more rigid and/or stiffer when gripped by a user. A balance may be achieved between of flattened and/or shallow depth ribs and deep ribs to attain a desired resistance to bending, leaning, and/or stretching while maintaining stiffness in a lightweight bottle.

A blow molded synthetic resin bottle has a body and an elongated neck with the body providing a shoulder extending about the base of the neck. The neck has a first collar extending thereabout spaced adjacent the shoulder and at least one additional collar extending thereabout adjacent the upper end of the neck. The resin in the neck is substantially unoriented. To produce the bottle, a synthetic resin preform is injection molded with a generally tubular body and the elongated neck. This preform is placed in a blow mold cavity having a body receiving portion and a neck receiving portion that has a recess extending thereabout seating the first collar therein. The additional collar is disposed outwardly of the mold cavity and is disposed on the upper surface of the mold.

A bottle includes a cylindrical body portion in which a plurality of panel portions, which is recessed toward an inside in a radial direction of the body portion, are provided at intervals in a circumferential direction and pillar portions are each provided between the panel portions adjacent to each other in the circumferential direction. The panel portions each have a panel bottom wall portion located at an inside of the body in the radial direction and have a lateral wall portion extending from an outer circumferential edge of the panel bottom wall portion to an outside in the radial direction. A rib which protrudes toward the outside in the radial direction while having a gap with respect to the panel bottom wall portion is provided at the panel bottom wall portion, and a longitudinal lateral wall portion is at least directed in the circumferential direction.