Package integrity indicator for container closure

A package integrity indicating closure, said closure comprising:

• an at least two-ply material comprising a first film layer adhesively joined to a second film layer;
• a first tear line formed into said first film layer, defining a first panel for providing an access opening through said first film layer when separated from said first film layer along said first tear line, and a second tear line formed into said first film layer and terminating at said first tear line to thereby define a second panel for indicating an initial opening of the closure when the second panel is separated from said first panel along said first tear line;
• and
• said second film layer having a second layer tear line defining a sealing panel which completely covers the first panel and covers the second panel of the first film layer;
• said second film layer including a releasable adhesive layer for releasably adhering said sealing panel to said first film layer such that said sealing panel is separated from said first film layer and said second panel to expose the access opening and to provide a visual indication that the closure has been opened after said sealing panel has been peeled back from said first film layer for a first time.