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US 5,516,035 AGranted
Tray-lid assembly
AssigneePackaging Corporation of America
InventorJames L. Stone
Life of this patent
Estimating the term…
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AssigneePackaging Corporation of America
InventorJames L. Stone
Estimating the term…
A tray-lid assembly comprises a tray and a lid. The tray includes a bottom panel, a continuous wall panel, and a continuous rim. The continuous wall panel encompasses the bottom panel and extends upwardly from the bottom panel. The continuous rim encompasses an upper edge of the continuous wall panel and projects laterally outwardly therefrom. The lid includes an upper surface and a lower surface. The lower surface of the lid is detachably connected to the continuous rim. The lid has a first inside cut score formed in the lower surface of the lid. The lid has an outside cut score formed in the upper surface of the lid. The outside cut score bridges the periphery of the lid at two points to divide the lid into a main section and a relatively small corner tab. The first inside cut score and the outside cut score are generally parallel and in proximity to each other. The first inside cut score and the outside cut score form a rev cut such that the lid delaminates in a first delamination region between the first inside cut score and the outside cut score in response to pressing down on the corner tab. Additional inside cut scores are preferably provided to facilitate removal of the corner tab from the tray.
A tray-lid assembly comprising:
A tray-lid assembly comprising:
A lid for a tray-lid assembly, said lid comprising an upper surface and a lower surface, said lower surface of said lid being detachably connected to a tray of the tray-lid assembly, said lid having a first inside cut score formed in said lower surface of said lid, said lid having an outside cut score formed in said upper surface of said lid, said outside cut score bridging the periphery of said lid at two points and forming a corner tab, said first inside cut score and said outside cut score being in proximity and forming a rev cut such that said lid delaminates in a delamination region between said first inside cut score and said outside cut score in response to pressing down on said corner tab.
A method of opening a tray-lid assembly comprising a tray and a lid, said lid comprising an upper surface and a lower surface, said lower surface of said lid being detachably connected to said tray, said lid having an inside cut score formed in said lower surface of said lid, said lid having an outside cut score formed in said upper surface of said lid, said outside cut score bridging the periphery of said lid at two points to divide said lid into a main section and a relatively small corner tab, said inside cut score and said outside cut score being in proximity and forming a rev cut, said method comprising the steps of:
Dependencies are inferred from the claim text.