Preform Design For Lightweight Container

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 tip portion at a second end of the preform opposite to the first end, the tip portion configured to form a container base and a container heel of the container;
• a shoulder portion adjacent to the finish portion and between the finish portion and the tip portion, the shoulder portion configured to form a container shoulder of the container;
• a body portion between the shoulder portion and the tip portion, the body portion configured to form a container body of the container;
• and
• an outer surface including a first flat portion and a second flat portion at the tip portion, the first flat portion extends at a first angle relative to a longitudinal axis of the preform, and the second flat portion extends at a second angle relative to the longitudinal axis of the preform, the second angle is different than the first angle.