Bulk cargo bag including an inner container body with reinforcing folds

Abstract

A bulk cargo bag includes: an outer container body having an outer surrounding wall; and an inner container body having an inner bottom wall, and an inner surrounding wall extending upwardly from the inner bottom wall. The inner surrounding wall has a plurality of spaced apart reinforcing folds, and a plurality of fixing members. Each of the reinforcing folds has an outwardly bent portion, and a folded back portion. Each of the fixing members fixes the outwardly bent portion and the folded back portion of one of the reinforcing folds to the outer surrounding wall.

1 . A bulk cargo bag comprising:
 an outer container body having an outer surrounding wall; and   an inner container body disposed within said outer container body and having an inner bottom wall, and an inner surrounding wall extending upwardly from said inner bottom wall, said inner surrounding wall having a plurality of spaced apart reinforcing folds that extend in a top-to-bottom direction and that project outwardly from an outer surface of said inner surrounding wall, and a plurality of fixing members, each of said reinforcing folds having an outwardly bent portion, and a folded back portion, each of said fixing members fixing said outwardly bent portion and said folded back portion of one of said reinforcing folds to said outer surrounding wall.   
     
     
         2 . The bulk cargo bag of  claim 1 , wherein said outer surrounding wall has a plurality of spaced apart couplers, each of said fixing members fixing said outwardly bent portion and said folded back portion of one of said reinforcing folds to one of said couplers. 
     
     
         3 . The bulk cargo bag of  claim 2 , wherein each of said couplers is formed as a U-shaped fold that projects outwardly from said outer surrounding wall, each of said reinforcing folds being inserted into said U-shaped fold of one of said couplers, each of said fixing members being a stitch line extending in the top-to-bottom direction and through one of said reinforcing folds and one of said U-shaped folds. 
     
     
         4 . The bulk cargo bag of  claim 3 , wherein said inner container body further has a plurality of hot press fluid-seals each of which seals said outwardly bent portion and said folded back portion of one of said reinforcing folds and extends in the top-to-bottom direction. 
     
     
         5 . The bulk cargo bag of  claim 4 , further comprising a plurality of retention plates disposed within said inner container body, said inner container body having a plurality of corners, each of said retention plates having two opposite ends secured to said inner surrounding wall respectively on two sides of one of said corners. 
     
     
         6 . The bulk cargo bag of  claim 5 , wherein said opposite ends of each of said retention plates are inserted respectively into two of said reinforcing folds and are hot pressed together with said outwardly bent portions and said folded back portions of said reinforcing folds to form two of said hot press fluid-seals. 
     
     
         7 . The bulk cargo bag of  claim 6 , wherein each of said fixing members is disposed outwardly of one of said hot press fluid-seals, and further extends through a respective one of said opposite ends of said retention plates. 
     
     
         8 . The bulk cargo bag of  claim 5 , wherein each of said fixing members extends through one of said hot press fluid-seals. 
     
     
         9 . The bulk cargo bag of  claim 5 , wherein each of said opposite ends of each of said retention plates is hot pressed to an inner surface of said inner surrounding wall. 
     
     
         10 . The bulk cargo bag of  claim 3 , further comprising a plurality of embracing pieces each of which covers one of said reinforcing folds within a respective one of said U-shaped folds. 
     
     
         11 . The bulk cargo bag of  claim 3 , wherein each of said reinforcing folds further has two opposite hot-pressed ends that respectively extend from said outwardly bent portion and said folded back portion and that are hot pressed to said outer surface of said inner surrounding wall. 
     
     
         12 . The bulk cargo bag of  claim 11 , further comprising a plurality of retention plates disposed within said inner container body, each of said retention plates having two opposite ends which are hot pressed to an inner surface of said inner surrounding wall.