Bulk bag with restrainer
AssigneeCustom Packaging Systems, Inc.
InventorLee LaFleur
Life of this patent
Estimating the term…
Abstract
A collapsible bulk bag which when filled with material has a generally cubical configuration with a pair of end walls and rectangular sidewalls extending between them with all of the walls being of a flexible material. Bowing and bulging of the sidewalls from a planar configuration is retarded and restrained by loops of cord operably connected with the sidewalls. Preferably the loops of cord having portions inside the bag extending obliquely between adjacent sidewalls when the bag is filled. Method and apparatus for making the bag with the double knotted loops of cord are also disclosed.
Claims26
A bulk bag comprising, a pair of end walls and at least two pair of sidewalls constructed and arranged so that when the bag is expanded and filled with material the sidewalls of each pair are in generally opposed relation and all the sidewalls extend between the end walls, all the sidewalls being of a flexible material, and at least two closed loops of cord associated with each pair of opposed sidewalls and being spaced apart between the end walls, each closed loop having first portions within the bag which when the bag is filled extend between its associated pair of opposed sidewalls and second portions operably connected with said associated opposed sidewalls so that when the bag is filled the loops of cord restrain and substantially retard the sidewalls from bowing and bulging outwardly from a generally planar configuration.
A bulk bag comprising,
- a first member having at least two pair of sidewalls and a second member having at least two pair of sidewalls and at least one end wall, said first and second members being constructed and arranged so that the sidewalls of each pair are in generally opposed relation, all the sidewalls being of a flexible material, each sidewall having side edges and a central region between its side edges, wherein the sidewalls of one of said first and second members are nested within the sidewalls of the other of said first and second members so that the side edges of said first member are secured to the side edges of said second member at spaced locations, and sidewall anti-bulging means comprising at least two closed loops of cord which have first portions within the bag which when the bag is expanded and filled extend obliquely between each pair of adjacent sidewalls and second portions operably connected with each said pair of adjacent sidewalls in said central regions so that when the bag is expanded and filled the loops of cord restrain and substantially retard the sidewalls from bowing and bulging outwardly from a generally planar configuration.
In a bulk bag comprising, at least one end wall and at least two pair of side walls constructed and arranged so that the sidewalls of each pair are in generally opposed relation and all of the sidewalls extend from the perimeter of said one end wall, all the sidewalls being of a flexible material, each sidewall having side edges and a central region between its side edges, and a plurality of means secured one to each adjacent pair of sidewalls within the bag and when the bag is expanded and filled extending obliquely one between each pair of adjacent sidewalls to restrain and substantially retard the sidewalls from bowing and bulging outwardly from a generally planar configuration, the improvement in combination therewith wherein each of said means comprises an array of spaced apart flexible tension-resistant members each of relatively thin cross section constructed and arranged to provide relatively wide open spaces therebetween in each said array, said means being collapsible with said bag walls when the bag is empty.
A bulk bag anti-bulging support construction comprising a plurality of collapsible sidewalls made of a flexible material, each sidewall having side edges connected to a mutually adjacent side edge of an adjacent one of said sidewalls and each sidewall having a central region between its side edges,
- a plurality of flexible, collapsible tension-resistant supports attached to the central region of each sidewall such that when said bulk bag support construction is expanded and full of a bulk load, the supports extend obliquely between each pair of mutually adjacent sidewalls to restrain and substantially retard the sidewalls from bowing and bulging outwardly from a generally planar configuration, each of said supports comprising
- an array of spaced apart flexible tension-resistant members, each of relatively thin cross section and constructed arranged to provide relatively wide open spaces therebetween in each said support array, each said support array being collapsible with said sidewalls when said bulk bag support construction is empty.
Dependencies are inferred from the claim text.