CPC B29C 45/261 (2013.01) [B29C 45/2711 (2013.01); B29C 49/06 (2013.01); B29C 2949/0724 (2022.05); B29C 2949/0856 (2022.05); B29L 2031/7158 (2013.01)] | 15 Claims |
1. A preform suitable for subsequent blow molding, the preform comprising:
a neck, a base and a body extending therebetween, the neck, the body and the base each having inner and outer faces defining a wall thickness therebetween,
the base having an elliptical inner face with a first flat circular bottom portion, and an elliptical outer face with a second flat circular bottom portion, and
the first and second flat circular bottom portions each having a center on a vertical center axis of the preform and a radius R of equal size.
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