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. Methods of making the bag with the loops of cord are also disclosed.
Claims38
A bulk bag comprising, a pair of end walls 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 the sidewalls extend between the end walls, all the sidewalls being of a flexible material, each sidewall having side edges and a central region between its side edges and 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 a pair of adjacent sidewalls and second portions connected with said pair of adjacent sidewalls in said central regions thereof 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.
A bulk bag comprising, a pair of spaced apart end walls each being generally rectangular, four sidewalls extending between said end walls and each being generally rectangular, each sidewall having side edges and a central region between its side edges, all of said walls being made of a flexible material, and at least two closed loops of cord, and when the bag is expanded and filled said loops of cord being spaced apart and having first portions extending within the bag obliquely between adjacent sidewalls and merging into second portions passing through and extending along the outside of the adjacent sidewalls in the central regions thereof between the side edges thereof with each loop being a predetermined length and constructed and arranged to become taut to restrain and retard bowing and bulging of the sidewalls when the bag is expanded and filled.
A bulk bag which comprises a pair of spaced apart end walls each having a generally rectangular configuration, four sidewalls extending between said end walls and each having a generally rectangular configuration, each sidewall having a pair of side edges and a central region between its side edges, each of said walls being of a flexible material, and at least two loops of cord associated with each pair of adjacent sidewalls and each having a pair of spaced apart first portions extending in the bag obliquely between its associated pair of adjacent sidewalls and merging into a pair of second portions connected with and extending along the outside of the generally central regions of its associated adjacent pair of sidewalls between the side edges thereof when the bag is expanded and filled.
Dependencies are inferred from the claim text.