Package integrity indicator for container closure
View Patent ↗A resealable closure for packages is provided which has a package integrity feature. The closure includes a two-ply material having an inner film layer and an outer film layer, forming a top of container. The outer film layer has a sealing panel completely covering a first panel and a second panel of the inner film layer. The sealing panel is permanently attached to the first panel and is releasably affixed a portion of the inner film layer around the perimeter of the first panel to form an opening in the top when the sealing panel with affixed first panel is peeled back from the top. The sealing panel is resealable against the top to seal the opening when the sealing panel is moved back against the top. The package integrity feature comprises the second panel of the inner layer which separates from the sealing panel to indicate that the container has been previously opened.
1. An integrity indicating food container comprising:
a tray;
an at least two-ply material comprising an inner film layer adhesively joined to an outer film layer forming a top over the tray, said top formed to provide an access opening for access to food items disposed in the tray;
said inner film layer having a first panel and a second panel, said outer film layer having a sealing panel formed therein which completely covers the first panel and covers the second panel of the inner film layer, said first panel and said sealing panel being permanently joined to each other to form the access opening into the container; and
a releasable adhesive provided on either or both the inner film layer on a perimeter outside the first panel or said sealing panel which lies thereover, for adhering said sealing panel to said inner film layer and said second panel, said sealing panel being releasable from said inner film layer and separable from the second panel by pulling the sealing panel layer back in a peeling direction and reclosable against said top to seal said opening when said sealing panel is moved back against said top, whereby after closing, the second panel is separated from the outer film layer, wherein the second panel is disposed adjacent the first panel prior to initial container opening.
2. The integrity indicating food container of claim 1 , wherein said food items are selected from the group consisting of cookies, crackers, peanuts, cheese, sliced meats, and semi-solid foods.
3. The integrity indicating food container of claim 1 , wherein said second panel is integrally formed with said inner film layer.
4. The integrity indicating food container of claim 1 , wherein said second panel falls into said container when said outer film layer is peeled back for a first time.
5. The integrity indicating food container of claim 1 , wherein said sealing panel comprises a material allowing visual observation of said second panel of said inner layer.
6. The integrity indicating food container of claim 1 , wherein said sealing panel comprises a see through window portion lying over said second panel of said inner layer, prior to said closure being opened for a first time.
7. The integrity indicating food container of claim 1 , wherein said second panel is constructed to fall away from the plane of said opening after the sealing panel is peeled back from said inner film layer for a first time.
8. The integrity indicating food container of claim 1 wherein the second panel after initial opening is independent and movable relative to the first panel.