| 摘要 |
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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