| 摘要 |
A container including a finish, a shoulder portion, a sidewall, and a base portion. The finish defines an opening. The shoulder portion extends from the finish. The sidewall extends from the shoulder portion and defines a volume of the container. The base portion is at an end of the sidewall opposite to the shoulder portion. The base portion includes a primary standing ring and a secondary standing ring. The base portion is movable from an as-blown position to an expanded position and from the expanded position to a retracted position. In the as-blown and retracted positions the primary standing ring is configured to support the container upright. In the expanded position the secondary standing ring is configured to support the container upright. |
