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A pressurized fluid package comprising an oriented plastic bottle having a generally cylindrical side wall, a neck terminating in a finish or a closure at the upper end, and a hemispherical bottom wall, and a base cup of plastic material. The base cup comprises a standing ring for engaging a support

A pressurized fluid package comprising an oriented plastic bottle having a generally cylindrical side wall, a neck terminating in a finish or a closure at the upper end, and a hemispherical bottom wall, and a base cup of plastic material. The base cup comprises a standing ring for engaging a support surface having a generally planar contacting surface. The base includes a support ring spaced above the standing ring and having an annular surface engaging the hemispherical bottom wall. The base has an annular frustoconical supporting member extending from the inner periphery of the standing ring and inclined upwardly and inwardly to the outer periphery of the supporting ring.

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A pressurized fluid package comprising: an oriented plastic bottle having a main body that includes a generally cylindrical side wall, a neck terminating in a neck finish on the upper end of the neck for receiving a closure, a hemispherical bottom wall in which the radius of the hemisphere forming t

A pressurized fluid package comprising: an oriented plastic bottle having a main body that includes a generally cylindrical side wall, a neck terminating in a neck finish on the upper end of the neck for receiving a closure, a hemispherical bottom wall in which the radius of the hemisphere forming the bottom wall is substantially equal to the radius of the main body, a base of plastic material comprising a standing ring for engaging a support surface, said base adapted for injection molding with a reduced molding cycle time, said base being of substantially uniform wall thickness, said standing ring being so constructed and arranged that it has a generally planar contacting surface for substantially full contact with the supporting surface for greater stability, said base including a support ring spaced above said standing ring, the support ring being so constructed and arranged that it has substantially full contact with the bottom of the bottle, said base having an annular supporting member extending from the inner periphery of the standing ring and inclined upwardly and inwardly to the outer periphery of the support ring, the base initially engaging a support surface along the outer edge of the standing ring, the standing ring flexing into substantially full contact with the support surface when the bottle is filled and pressurized, said annular supporting member being so constructed and arranged that it is substantially straight in frusto-conical shape and the member remaining straight when the bottle is filled and pressurized to provide the package with improved stability and improved strength against top load stress.