Patent ID: 7563027
Filing Date: 2009-07-21
Classification: B31B,B65B,B65D

Abstract:
1. A bag comprising: a tube body having a first end, a second end positioned substantially opposite the first end, a front wall positioned between the first end and the second end, and a back wall positioned to face opposite the front wall between the first end and the second end, a primer material positioned on and overlying selected second end portions of an outer surface of the front wall to thereby define a first bond region between the front wall and the primer material; a front flap extension member connected to and extending outwardly from the second end of the front wall; a back flap extension member connected to and extending outwardly from the second end of the back wall, the back flap extension member is adapted to fold over, overlie, and adhere to the front flap extension member and the selected second end portions of the outer surface of the front wall when in a closed position to thereby securely close the second end; an adhesive material positioned on and overlying the back flap extension member to thereby define a second bond region between the primer material and the adhesive material when the back flap extension member is folded over the front flap extension member and the selected second end portions of the outer surface of the front wall and the adhesive material contacts the primer material, the adhesive material comprising a first polyolefin polymer and the primer material comprising a second polyolefin material having a different chemical polyolefin composition from the first polyolefin polymer, wherein one of the first and second bond regions is stronger than the other of the first and second bond regions such that when the back flap extension member liftingly separates from at least one of the selected second end portions of the outer surface of the front wall and the front flap extension member at least one of the selected second end portions of the outer surface of the front wall and the back flap extension member tears to thereby define a tear region and so that the tear region indicates that tampering with the second end of the bag has occurred, wherein the primer material defines a liquid surface treatment in the selected second end portions of the outer surface of the front wall to promote further bonding between the adhesive material and the selected second end portions of the outer surface of the front wall when the back flap extension member is folded over the front flap extension member and the selected second end portions of the outer surface of the front wall and the adhesive material contacts the primer material, and wherein the outer surface of the front wall in the selected second end portions includes at least one outermost layer of porous material, and wherein the primer material of the liquid surface treatment penetrates into the porous material of the at least one outermost layer of the outer surface to thereby define a primer integration zone on the outer surface of the front wall.