초록 ▼

A blow moulded plastic container is disclosed. The container has a base with a raised central portion and a marginal portion surrounding the raised central portion. The marginal portion includes at least three spaced supporting sections adapted to support the container on a surface in use. Interveni

A blow moulded plastic container is disclosed. The container has a base with a raised central portion and a marginal portion surrounding the raised central portion. The marginal portion includes at least three spaced supporting sections adapted to support the container on a surface in use. Intervening areas of the marginal portion between the supporting sections are depressed inwardly of the container with respect to said sections, which makes for improved flow of the plastic material during moulding and results in a stronger container.

대표청구항 ▼

A blow moulded plastic container which is of substantially rectangular shape in plan and which has a correspondingly shaped base adapted to support the container on a surface, and a side wall which extends upwardly from the base and defines therewith a space within the container, wherein the base is

A blow moulded plastic container which is of substantially rectangular shape in plan and which has a correspondingly shaped base adapted to support the container on a surface, and a side wall which extends upwardly from the base and defines therewith a space within the container, wherein the base is of substantially uniform wall thickness throughout and includes a central portion which is raised with respect to a plane in which the base makes contact with a said surface and a marginal portion surrounding said raised central portion, said marginal portion including four supporting sections spaced around said portion, said supporting sections being positioned essentially mid-way along each side of the base and being adapted to support the container on a said surface in use, said sections having respective outer surfaces which are disposed in said plane at the lower extremity of the container and which curve convexly upwardly from said plane and merge into the side wall of the container, intervening areas of said marginal portion between said supporting sections being depressed inwardly of the container with respect to said supporting sections and extending around corners of said marginal portion of the base.