Self opening T-shirt bag pack

Abstract

A self-opening bag pack includes a plurality of stacked thermoplastic film bags, each of the bags have longitudinal side gussets and a U-shaped cut-out in an upper portion of the bag forming an open mouth portion and a pair of bag handles. The front and rear walls of each of said bags are corona treated to improve adhesion. An impact line is located immediately adjacent at least a portion of the U-shaped cutout and adheres the rear wall of a first bag in the bag pack to the front wall of a subsequent bag in the pack. Hanging apertures attach the bag pack to a dispensing rack. When the pack is attached to the rack and the first bag is pulled outwardly from the pack, the front wall of a subsequent bag will be adhered to the rear wall of the first bag, thereby causing the first bag to open.

1 . A self-opening bag pack comprising:
 a plurality of stacked thermoplastic film bags, each of said bags having front and rear walls, each of said front and rear walls having first and second side edges, a top edge and a bottom edge;   said front and rear walls being integrally joined at their first and second side edges and secured together at their top and bottom edges by upper and lower seams across a width of said bags;   each of said bags having longitudinally oriented side gussets adjacent said first and second side edges;   a U-shaped cut-out, said U-shaped cut-out being disposed in an upper portion of said bag and commencing at a first point along said upper seam spaced inwardly from said first side edge and extending to a second point along the upper seam spaced inwardly from said second side edge, said cut-out extending downwardly toward said bottom edges, thereby forming an open mouth portion and a pair of bag handles.   at least an upper portion of an outer surface of said front and rear walls of each of said bags having been corona treated;   an impact line, said impact line being disposed immediately adjacent at least a portion of said U-shaped cutout and adhering said rear wall of a first bag in said bag pack to said front wall of a subsequent bag in said bag pack;   means for attaching said bag pack to a dispensing rack;   whereby, when said bag pack is attached to said dispensing rack and said first bag is pulled outwardly from said bag pack, said front wall of said subsequent bag will be adhered to said rear wall of said first bag, thereby causing said first bag to open.   
   
   
       2 . The self-opening bag pack, as described in  claim 1 , wherein said impact line comprises at least one two separate portions. 
   
   
       3 . The self-opening bag pack, as described in  claim 1 , wherein said bags further comprise a center tab, said center tab extending upwardly from said open mouth portion. 
   
   
       4 . The self-opening bag pack, as described in  claim 3 , wherein said center tab comprises a hanging aperture and is joined to said open mouth portion at a weakened area, thereby permitting said tab to be torn from said mouth portion as said bag is removed from said dispensing rack. 
   
   
       5 . The self-opening bag pack, as described in  claim 4 , wherein said impact line is disposed immediately adjacent at least a portion of an outer perimeter of said center tab on either side of said weakened area. 
   
   
       6 . The self-opening bag pack, as described in  claim 4 , wherein said weakened area comprises a perforation line disposed between said open mouth portion and said center tab. 
   
   
       7 . The self-opening bag pack, as described in  claim 4 , wherein said weakened area comprises an opening, said opening being disposed between said open mouth portion and said center tab. 
   
   
       8 . The self-opening bag pack, as described in  claim 7 , wherein said weakened area further comprises a first cut, said first cut extending from said opening toward said open mouth portion. 
   
   
       9 . The self-opening bag pack, as described in  claim 7 , wherein said weakened area further comprises a second cut, said second cut extending from said open mouth portion toward said opening. 
   
   
       10 . The self-opening bag pack, as described in  claim 7 , wherein said weakened area further comprises a first notch, said first notch extending from said opening toward said open mouth portion. 
   
   
       11 . The self-opening bag pack, as described in  claim 7 , wherein said weakened area further comprises a second notch, said second notch extending from said open mouth portion toward said opening. 
   
   
       12 . The self-opening bag pack, as described in  claim 3 , wherein said center tab comprises a hanging aperture, upward pointing angled side walls and a weakened area disposed between said hanging aperture and at least one of said angled side walls. 
   
   
       13 . The self-opening bag pack, as described in  claim 12 , wherein said impact line is disposed immediately adjacent at least a portion of at least one of said angled side walls of said center tab on either side of said weakened area. 
   
   
       14 . The self-opening bag pack, as described in  claim 12 , wherein said wherein said weakened area comprises a perforation line extending from said hanging aperture to either of said angled side walls. 
   
   
       15 . The self-opening bag pack, as described in  claim 12  wherein said weakened area comprises an opening, said opening being disposed between said hanging aperture and either of said angled side walls. 
   
   
       16 . The self-opening bag pack, as described in  claim 12 , wherein said weakened area comprises a first cut, said first cut extending from said hanging aperture toward either of said angled side walls. 
   
   
       17 . The self-opening bag pack, as described in  claim 12 , wherein said weakened area comprises a second cut, said second cut extending from either of said angled side walls toward said hanging aperture. 
   
   
       18 . The self-opening bag pack, as described in  claim 12 , wherein said weakened area comprises a first notch, said first notch extending from said hanging aperture toward either of said angled side walls. 
   
   
       19 . The self-opening bag pack, as described in  claim 12 , wherein said weakened area comprises a second notch, said second notch extending from either of said angled side walls toward said hanging aperture. 
   
   
       20 . The self-opening bag pack, as described in  claim 1 , wherein the means for attaching said bag pack to a dispensing rack further comprises:
 first and second openings, said first and second openings penetrating and extending transversely through said bag pack in an upper portion of the bags; and   said openings being spaced downwardly from said top edge, spaced inwardly from said first and second side edges and serving to support said bag pack on horizontal arms of a dispensing rack.   
   
   
       21 . The self-opening bag pack, as described in  claim 3 , wherein said central tab portion is disposed above an upper edge of said open mouth portion and attached thereto, thereby providing stress relief for said open mouth portion.