Abstract: A hot-fill PET container or bottle (10) filling with a liquid at an elevated temperature has a side wall (9) extending to a lower portion including a pressure panel (11) and a base (21) in its unfolded or pre-fill position. The panel (11) is transversely oriented and has a decoupling or hinge structure (13), an initiator portion (1) and control portion (5) of a steeply angled inverting conical section between 30 and 45 degrees. The control portion enables the inversion of the panel (11) into the container (10) to compensate for vacuum or reduced pressure induced within the container as the liquid cools down. The base (2) can also have a plurality of reinforcing ribs (3).

Abstract: The present invention provides an improved blow molded plastic non-round container having generally rectangular sidewalls that are adapted for hot-fill applications. The hot-fill container has two adjacent sides one with a vacuum panel and the other with a series of ribs in the label mounting area on the sidewalls. The opposing sidewalls are symmetric relative to the vacuum panel and rib shape and placement. The ribs and vacuum panel cooperate to resist container upon filling and cooling and also improves bumper denting resistance, ease of manufacture and light weight capability.

Abstract: The present invention provides an improved blow molded plastic non-round container having generally rectangular sidewalls that are adapted for hot-fill applications. The hot-fill container has two adjacent sides one with a vacuum panel and the other with a series of ribs in the label mounting area on the sidewalls. The opposing sidewalls are symmetric relative to the vacuum panel and rib shape and placement. The ribs and vacuum panel cooperate to resist container upon filling and cooling and also improves bumper denting resistance, ease of manufacture and light weight capability.