Patent ID: 8211079

Claim:
A tab and slot closure system comprising: a) a tab member including: i) a tab element including an outer surface and an inner surface, and a first region having a proximal edge, a second region having a distal edge, and a line of attachment disposed between the proximal edge and the distal edge; and ii) a substrate element attached to the inner surface of the tab element along the line of attachment, b) a slot member having an outer surface and an inner surface, an inboard portion and an outboard portion, and a slot disposed between the inboard portion and the outboard portion, wherein when the closure system is fastened a portion of the substrate element extends into the slot member to the line of attachment, and at least a portion of the inner surface of the first region of the tab element overlaps the outer surface of the outboard portion of the slot member; and c) an anti-pop open device disposed on the tab member or the slot member, wherein the anti-pop open device includes a beveled component disposed in the first region, wherein the anti-pop open device causes at least a portion of the proximal edge of the tab element to lift away from the substrate element, thereby reducing the likelihood of the tab element unintentionally passing back through the slot.