CPC B65D 1/0223 (2013.01) [B29B 11/14 (2013.01); B29C 49/071 (2022.05); B29C 49/12 (2013.01); B29C 2949/077 (2022.05); B29C 2949/0833 (2022.05); B29C 2949/0851 (2022.05); B29K 2067/003 (2013.01); B29L 2031/7158 (2013.01)] | 6 Claims |
1. A preform configured to form a container by stretch blow molding, the preform comprising:
a finish portion at a first end of the preform, the finish portion is a container finish of the container;
a support flange of the finish portion;
a tip portion at a second end of the preform opposite to the first end, the tip portion configured to form a container base of the container, a longitudinal axis of the preform extends in a lengthwise direction from the first end to the second end of the preform through an axial center of the finish portion and a center of the tip portion;
a neck portion adjacent to the support flange, the neck portion configured to form a neck portion of the container;
an external stretch radius at an outer surface of the neck portion, the external stretch radius is curved and extends in the lengthwise direction;
an internal stretch radius at an inner surface of the neck portion, the internal stretch radius is curved and extends in the lengthwise direction, a first distance between the internal stretch radius and the external stretch radius is equal to, or greater than, four times a second distance between the external stretch radius and the support flange;
a shoulder portion adjacent to the neck portion and configured to form a container shoulder of the container; and
a body portion between the shoulder portion and the tip portion, the body portion configured to form a container body of the container.
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