| 摘要 |
<p>A moulded polymeric container (10) includes a body portion (12) having a sidewall (18) and an integral champagne type base (16). The base (16) includes a lower end (20) that defines an annular contact ring (22) for supporting the container (10) with respect to an underlying surface. An annular step ring (24) is defined immediately radially inwardly of the annular contact ring (22) and has a radial length L S. The base (16) further has a central push-up area (26) and a generally concave transition region (28) interposed between the central push-up area (26) and the annular contact ring (22). The transition region (28) further includes a plurality of integrally moulded radially extending ribs (30), each of the ribs (30) having a length L R. According to one advantageous aspect of the invention, the ratio L R/L S is within a range of about 1.0 to about 4.0.</p> |
