Expandable bag assemblies with an integral support structure for filling

Abstract

Expandable bag assemblies and associated methods are disclosed herein. Certain aspects of the invention are directed toward an expandable bag assembly that includes a flexible bag with closed and open ends and collapsible sidewalls disposed between the ends. The assembly beneficially includes an integrated support structure provided with stiffeners and a mechanism for attachment to help hold a mouth of the bag in an open position while filling the bag. The assembly can be compressed for easy packaging and storage and be expanded into a self-supported, open position without memory folds. The assembly is also configured to retract during closure of the open end of the bag.

1 . An expandable bag assembly with support aid for filling the bag assembly comprising:
 a flexible bag having a closed end portion, an open end portion, and collapsible sidewalls that define an internal cavity, the open end portion defining a mouth of the bag and being moveable to an open position to receive fill material into the internal cavity and being moveable to a closed position; and   one or more stiffeners attached to the sidewalls of the bag, wherein each of the stiffeners is adjacent to other ones of the stiffeners and is moveable relative to the adjacent ones of the stiffeners, the stiffeners defining a positionable self-supporting structure configured to define a portion of the internal cavity proximate to the mouth of the bag and to retain the mouth of the bag and the portion of the internal cavity in the open position to receive fill material therein.   
     
     
         2 . The assembly of  claim 1  wherein each of the stiffeners is spaced apart from and adjacent to other ones of the stiffeners. 
     
     
         3 - 13 . (canceled) 
     
     
         14 . The assembly of  claim 1  wherein the stiffeners includes an integral fold line about which the stiffener can be folded. 
     
     
         15 - 26 . (canceled) 
     
     
         27 . A disposable bag assembly, comprising:
 a body portion having a first longitudinal axis, an internal cavity, sidewalls and an open end portion that defines a mouth of the bag moveable to an open position to receive fill material into the internal cavity and being moveable to a closed position; and   one or more stiffeners attached to the sidewalls of the bag proximate to the open end portion, the stiffeners having a second longitudinal axis and being moveable with a portion of the flexible sidewall relative to the adjacent ones of the stiffeners, each of the stiffeners being corrugated with ridges substantially parallel to the second longitudinal axis, the stiffeners forming a conformable, self-supporting structure configured to be positionable to retain the mouth of the bag and the portion of the internal cavity in the open position to receive fill material therein.   
     
     
         28 . The assembly of  claim 27  wherein each of the stiffeners is spaced apart from the adjacent to other ones of the stiffeners. 
     
     
         29 - 34 . (canceled) 
     
     
         35 . The assembly of  claim 27  wherein the flexible bag has a first longitudinal axis, and the stiffeners have a second longitudinal axis substantially skewed relative to the first longitudinal axis. 
     
     
         36 . (canceled) 
     
     
         37 . (canceled) 
     
     
         38 . A disposable bag assembly comprising:
 a flexible bag having a closed end and open end; and   an integrated support structure having one or more stiffeners spaced apart from each other and configured to hold and maintain the open end of the bag assembly in a self-supporting open fillable position and configured to fold with the flexible bag to form a substantially planar configuration such that the stiffeners are aligned to form a compact stack when the bag and stiffeners are in a folded condition.   
     
     
         39 . The assembly of  claim 38  wherein the stiffeners are spaced apart from each other. 
     
     
         40 . (canceled) 
     
     
         41 . (canceled) 
     
     
         42 . The assembly of  claim 38  wherein the flexible bag has a first longitudinal axis, and the stiffeners have a second longitudinal axis substantially skewed relative to the first longitudinal axis. 
     
     
         43 . (canceled) 
     
     
         44 . (canceled)