Easy open industrial bag

Abstract

An easy open industrial bag includes a tab member secured to a front wall on the exterior of the bag. The tab member is secured between the front wall and a flap formed on a back wall of the bag and folded over and secured to the front wall for closing the bag. The flap is secured with an adhesive disposed in a pattern providing an adhesive void at an opening edge of the bag.

I claim:  
     
         1 . A bag comprising a front wall, a back wall, first and second side walls interconnecting the front wall and the back wall, defining an interior and an exterior of the bag, and an enclosed end; 
 the enclosed end comprising a flap formed integral with the back wall and further being folded over and engaging the front wall and secured thereto by an adhesive;    a tab secured to the front wall on the exterior and disposed within the enclosed end between the flap and the front wall, the tab being detachably secured to the front wall; and    the adhesive disposed in pattern having an adhesive void adjacent an opening edge of the front wall.    
     
     
         2 . The bag of  claim 1 , wherein a first portion of the tab is disposed between the flap and the front wall and a second portion extends along the front wall.  
     
     
         3 . The bag of  claim 3 , wherein the first portion overlaps the opening edge.  
     
     
         4 . The bag of  claim 1 , wherein the tab extends outwardly from beneath the flap.  
     
     
         5 . The bag of  claim 1 , wherein the tab comprises a first ply and a second ply, the first ply being bonded to the front wall and the second ply being unsecured to the front wall.  
     
     
         6 . The bag of  claim 5 , wherein the second ply overlaps the opening edge.  
     
     
         7 . The bag of  claim 1 , wherein the tab is secured to the front wall by a peel-free adhesive.  
     
     
         8 . The bag of  claim 1 , wherein the tab is formed to include at least one aperture and wherein the flap is bonded to the front wall within the at least one aperture.  
     
     
         9 . The bag of  claim 1 , wherein the adhesive pattern comprises first portion of adhesive disposed on the flap and a second portion of adhesive disposed on the front wall.  
     
     
         10 . A bag comprising a front wall, a back wall and first and second side walls interconnecting the front wall and the back wall, defining an interior and an exterior of the bag, each of the front wall, the back wall and the first and second side walls having a multi-ply construction, the front wall and the first and second side walls each having an end edge, wherein each of the end edges are cut substantially flush, and the back wall has a flap extending from the back wall and beyond the end edges; 
 a tab member releasably secured to the front wall on the exterior and extending from the end edge; and    an adhesive disposed on the flap and extending in a pattern extending substantially continuously from the first side wall to the second side wall and adjacent a flap edge to define an adhesive void adjacent an opening edge of the front wall.    
     
     
         11 . The bag of  claim 9 , wherein tab member is secured to the front wall by an peel-free adhesive.  
     
     
         12 . The bag of  claim 10 , wherein the tab member extends from the end edge of the front wall a length in excess of a length of the flap.  
     
     
         13 . The bag of  claim 10 , wherein the tab member includes a portion that overlaps the opening edge.  
     
     
         14 . The bag of  claim 10 , wherein the first and second side walls comprise stepped-plies extending from end edge.  
     
     
         15 . The bag of  claim 10 , the tab member comprising a first ply and a second ply, the first ply being substantially permanently bonded to the front wall and the second ply being unsecured to the front wall.  
     
     
         16 . The bag of  claim 15 , wherein the second ply overlaps the opening edge.  
     
     
         17 . The bag of  claim 10 , the tab member comprising having a first portion disposed between the flap and the front wall and a second portion extending outwardly from beneath the flap and along the front wall.  
     
     
         18 . The bag of  claim 17 , the first portion formed to include at least one aperture z and the adhesive being disposed within the aperture.  
     
     
         19 . The bag of  claim 10 , further comprising adhesive disposed on the front wall in a pattern extending substantially continuously from first side wall to the second side wall and displaced from the opening edge to define an adhesive void adjacent the opening edge.  
     
     
         20 . A bag comprising a front wall, a back wall and first and second side walls interconnecting the front wall and the back wall defining an interior portion and an exterior portion of the bag, 
 the front wall having an opening edge;    the back wall having a flap extending from the back wall and beyond the opening edge;    a tab member secured to the front wall on the exterior of the bag by a peel-free adhesive, the tab member extending from substantially adjacent the opening edge along the front wall substantially perpendicular to the opening edge; and    adhesive applied in a pattern to the front wall and to the flap, wherein a first portion of the adhesive is disposed on the front wall and extends in a pattern substantially continuously between the first side wall and the second side wall and displaced from the opening edge, and wherein a second portion of the adhesive is disposed on the flap and extends in a pattern substantially continuously from the first side wall to the second side wall and adjacent a flap edge, wherein the first portion of adhesive and the second portion of adhesive cooperate to secure the flap to the front wall and to define an adhesive void adjacent the opening.