Standup bag and method of manufacturing same

Abstract

A standup bag for granular products or the like and a method of manufacturing the bag. The standup bag is manufactured from an extruded heat sealable material and includes both an integral handle and a perforation to facilitate opening and pouring out the contents of the bag.

1 - 34 . (canceled)  
   
   
       35 . A bag made by the method for manufacturing from a single piece of film, a bag having front and rear walls, two side walls, a top portion, and a bottom portion upon which the bag stands when filled, comprising the steps of: 
 wrapping a heat sealable film, having top and bottom edges and first and second side edges, around a tube to continuously form the front wall, the two side walls, and the rear wall;    heat sealing, without using a cooling medium for controlling temperature of the film, the first and second side edges to each other to close the rear wall;    heat sealing and folding, without using a cooling medium for controlling temperature of the film, the bottom edge to seal the bottom portion;    filling the bag with a predetermined material;    folding the two side walls inwardly between the front and rear walls so as to form gussets in the top portion and the bottom portion;    heat sealing, without using a cooling medium for controlling temperature of the film, the top edge to seal the top portion;    and coating the heat sealable film with an overcoating on an outer layer of the heat sealable film.    
   
   
       36 . (canceled)  
   
   
       37 . A method of manufacturing a bag from a non-laminated extruded heat sealable film, comprising the step of continuously heat sealing the film in predetermined areas without using a cooling medium for controlling temperature of the film and wherein the heat sealable film has an inside layer and an outer later, the inside later having a lower seal initiation point and a higher hot tack than the outer layer.  
   
   
       38 . A bag made by the method of  claim 37 .  
   
   
       39 . A method for manufacturing a bag from a single piece of non-laminated extruded heat sealable film, comprising the step of continuously heat sealing the film in predetermined areas without using a cooling medium for controlling temperature of the film.  
   
   
       40 . A bag made by the method of  claim 39 .  
   
   
       41 - 55 . (canceled)  
   
   
       56 . A method for manufacturing a bag from non-laminated extruded heat sealable film, comprising the step of coating the film with a lacquer coating over all areas of the film that contact heat sealing jaws.  
   
   
       57 . A bag made by the method of  claim 56 .  
   
   
       58 - 87 . (canceled)