Patent ID: 7322921
Filing Date: 2008-01-29
Classification: B31B,B65B,B65D

Abstract:
1. A method of forming a bag having a tamper evident feature associated therewith, the method comprising: applying a primer material to overlie selected portions of a substrate to form a primed portion of the substrate and to thereby define a first band region between the selected portions of the substrate and the primer material; forming a tube body with at least the substrate, the tube body having a first end and a second end positioned substantially opposite the first end, the tube body having a front wall positioned between the first end and the second end and a back wall positioned to face opposite the front wall, the primed portion of the substrate selected second end portions of an outer surface of the front wall, the tube body further including a back flap extension member connected to and extending outwardly from the second end of the back wall and a front flap extension member connected to and extending outwardly from the second end of the front wall; applying an adhesive material to overlie the back flap extension member; and folding the back flap extension member to overlie and adhere to the front flap extension member and the selected second end portions of the outer surface of the front wall to thereby securely close the second end, the primer material and the adhesive material thereby defining a second bond region, the first bond region being stronger than the second bond region so that when the back flap extension member liftingly separates from at least one of the front wall and the front flap extension member, at least one of the back flap extension member and the selected portions of the outer surface of the front wall tears indicating tampering with the second end of the bag has occurred.