| 摘要 |
A molded polymeric container that is shaped to be easier to mold, have improved rigidity under pressure and improved strength includes a substantially cylindrical body portion having a longitudinal axis and a circumferential sidewall, and a bottom portion. The bottom portion includes a central pushup area that is substantially symmetrical about the longitudinal axis and that is substantially flat. The pushup area preferably has a radius that is within the range of 0.100 inches to 0.500 inches. The bottom portion further includes a plurality of support feet surrounding and protruding downwardly from the pushup area, each of which has a bottom support surface and a pair of sidewalls that help define a valley between the support feet. The sidewalls have a substantially straight portion that defines an angle with respect to a line that is perpendicular to the longitudinal axis, and this angle is at least 25 degrees.
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