POM PT one step with a cross directional ripping-strip

Abstract

A bag comprising adhesive material applied on a ply step of the bag, a ripping-strip and a non adhesive coated area embedding the ripping-strip, providing an easy opening feature at the customer open end of the bag. The bottom of the bag comprises a folded flat bottom. The bag preferably holds an inserted inner bag. The bag has a top closure that can be folded above a customer seal in order for the inner bag to be fully independent from the outer bag after the bag is opened with the help of a ripping-strip. Upon closure of the bag, the inner bag is not trapped in an upper flap of the outer bag in order for the bag to be fully recyclable. Preferably, a mid-step is provided with the mid ply of the outer bag. The mid step stiffens and reinforces the flap.

1 . A bag comprising: 
 an open top end;    a closed bottom end;    a first wall portion;    a second wall portion opposite the first wall portion;    an upper flap on the first wall portion extending above a top edge of the second wall portion, and being foldable against the second wall portion, the upper flap having two opposite side edges;    an adhesive along the upper flap for closure of the upper flap against the second wall portion after being folded; and    a ripping strip extending along the upper flap in an area between a location above the top edge of the second wall portion and the adhesive.    
   
   
       2 . A bag according to  claim 1 , comprising: 
 an inner bag of heat sealable plastic material removably attached to said bag, hereinafter referred to as an outer bag, comprising: 
 a closed bottom end removably bonded on an inside surface of the outer bag adjacent the closed bottom end of the outer bag; and  
 an open top end removably bonded on the inside surface of the outer bag adjacent the open top end of the outer bag, the inner bag being sized such that a top edge thereof extends at a same level with or below the top edge of the second wall portion of the outer bag.  
   
   
   
       3 . A bag according to  claim 1 , wherein the ripping strip has at least one end exceeding one of said side edges of the flap.  
   
   
       4 . A bag according to  claim 1 , wherein the adhesive is a strip of hot melt glue.  
   
   
       5 . A bag according to  claim 1 , wherein the adhesive is a two-face adhesive tape.  
   
   
       6 . A bag according to  claim 1 , wherein the upper flap has frangible dotted lines on either side of the ripping strip and in proximity thereof to facilitate the ripping of the upper flap.  
   
   
       7 . A bag according to  claim 1 , wherein at least one of the side edges of the upper flap is provided with a slit on either side of the ripping strip in proximity thereof to facilitate the ripping of the upper flap.  
   
   
       8 . A bag according to  claim 2 , wherein the outer bag is made of paper.  
   
   
       9 . A bag according to  claim 2 , wherein the outer bag is made of multiple plies.  
   
   
       10 . A bag according to  claim 9 , wherein the outer bag comprises an inner ply, a mid ply and an outer ply, and wherein the upper flap is formed by upper extensions of the outer ply and the mid ply.  
   
   
       11 . A bag according to  claim 10 , wherein the upper extension of the outer ply is longer than the upper extension of the mid ply.  
   
   
       12 . A bag according to  claim 2 , wherein the inner bag is made of polyethylene.  
   
   
       13 . A bag according to  claim 1 , wherein the closed bottom end of the outer bag is a flat bottom.  
   
   
       14 . A method of closing a bag according to  claim 2 , comprising the following steps at the completion of filling a product into the bag through the open top ends of the inner and outer bags: 
 (a) sealing the inner bag through the outer bag to form a customer seal which closes the inner bag; and    (b) folding the upper flap against the second wall portion of the outer bag.    
   
   
       15 . The method according to  claim 14 , wherein the adhesive is a hot melt glue and the method further comprises, between step (a) and step (b), a step of heating the adhesive.  
   
   
       16 . The method according to  claim 14 , wherein step (a) of sealing comprises the step of heating the inner bag through the outer bag with heating elements.  
   
   
       17 . A bag comprising: 
 an outer bag comprising: 
 an open top end  
 a closed bottom end;  
 a first wall portion,  
 a second wall portion opposite the first wall portion;  
 an upper flap on the first wall portion extending above a top edge of the second wall portion, and being foldable against the second wall portion, the upper flap having two opposite side edges;  
 an adhesive along the upper flap for closure of the upper flap against the second wall portion after being folded; and  
 a ripping strip extending along the upper flap in an area between a location above the top edge of the second wall portion and the adhesive; the ripping strip having at least one end exceeding one of said side edges of the flap; and  
   an inner bag of heat sealable plastic material removably attached to the outer bag, comprising: 
 a closed bottom end removably bonded on an inside surface of the outer bag adjacent the closed bottom end of the outer bag; and  
 an open top end removably bonded on the inside surface of the outer bag adjacent the open top end of the outer bag, the inner bag being sized such that a top edge thereof extends at a same level with or below the top edge of the second wall portion of the outer bag.