| Portage Plastics Corporation Patent applications |
| Patent application number | Title | Published |
|---|
| 20120111754 | Reclosable Door-Latching Package - A reclosable package having a blister with an outer wall defining an article-holding cavity in communication with a cavity opening that includes a door attached by a hinge and configured to seat in the opening with engagement between the door and a cavity-opening defining side or edge helping keep the door closed. In one embodiment, the door includes an indented portion that frictionally engages at least one and preferably a plurality of cavity-opening defining side when closed. Such an indented portion can include an undercut that underlies part of the adjacent cavity-opening defining side when the door is closed having an interference fit therebetween that can be a snap fit. The package can also be configured to provide releasable engagement between part of the door and part of the blister outer wall when the door is closed that can be in the form of a bar snap. | 05-10-2012 |
| 20090291174 | HIGH PRESSURE PASTEURIZABLE/ULTRA-HIGH PRESSURE STERILIZABLE FOOD PROCESSING CONTAINER AND METHOD - A method and container capable of withstanding ultra-high pressure sterilization or pasteurization and being used as a retail package. The container includes at least one deformable pressure absorbing fold channel integrally formed therein enabling the container to undergo UHP processing and return substantially to its prior shape. In one embodiment, the container has at least one sidewall with such a fold channel. In a preferred embodiment, the package also has a bottom wall with a fold channel. The container is thermoformed of a sheet that includes at least one oxygen barrier layer and includes a peelable oxygen barrier film covering a container opening. In a preferred method, the container has a plurality of sidewalls with a fold channel therebetween and a bottom with a fold channel thereabout that accommodates compression between 5% and 25% without showing visible damage when subjected to pressures of between 70 ksi and 120 ksi. | 11-26-2009 |
