| 摘要 |
A container base (20) that is capable of withstanding an internal pressure and further capable of causing an even deflection, such as that created by- introducing liquefied gas during a hot filling process. The base includes a heel (24) with a standing ring (2-6) disposed at a lower portion thereon. A generally concave push up portion (28) extends radially inward from the ' standing ring portion. At least two reinforcing rings (43,47) are disposed on the push up portion,' wherein the reinforcing rings diminish uneven deflection to prevent the container from tipping while resting on a flat surface. |
