Methods of compensating for vacuum pressure changes within a plastic container
US9802730B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2013 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Oct 13, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67C2003/226
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A plastic container comprises an upper portion including a finish adapted to receive a closure, a lower portion including a base, and a sidewall extending between the upper portion and the lower portion. The upper portion, the lower portion, and the sidewall define an interior volume for storing liquid contents. The plastic container further comprises a pressure panel located on the container and moveable between an initial position and an activated position. The pressure panel is located in the initial position prior to filling the container, and is moved to the activated position after filling and sealing the container. Moving the pressure panel from the initial position to the activated position reduces the internal volume of the container and creates a positive pressure inside the container. The positive pressure reinforces the sidewall. A method of processing a container is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.