Method of processing a container and base cup structure for removal of vacuum pressure

摘要

A Method of Processing a Container and Base Cup Structure For Removal of Vacuum Pressure A plastic container (10) has a wall extending to a lower portion including a pressure panel (20). The panel (20) is transversely oriented and can move from a downwardly inclined position providing a geometrically unstable configuration to an upwardly inclined position providing a geometrically stable configuration to control pressure change in the container. This movement may be provided by suitable actuating means such as rod (22). In the unstable configuration a base cup 50 or any other suitable holder can support the container and enable it to be conveyed in a container handling or processing system.

主权项

1. A method of processing a container for removing vacuum pressure, said container having a longitudinal axis and at least one vacuum panel at a bottom end-wall, the longitudinal axis extending from the bottom end-wall to an opening in a top or opposing end of the container, said vacuum panel being moveable from a downwardly inclined position to an upwardly inclined position, wherein the vacuum panel comprises a first portion and a second portion, the first portion being inclined at an angle greater than 100 degrees relative to said longitudinal axis and said opening when the vacuum panel is in the downwardly inclined position, and the second portion being inclined at an angle that is at least 10 degrees less than the first portion when the vacuum panel is in the downwardly inclined position, said method including:
with said container having said vacuum panel in a downwardly inclined position, conveying said container; capping said container; and applying a longitudinally directed force against said downwardly inclined vacuum panel to move said vacuum panel to an upwardly inclined position.