Bulk bag with stand type pulling up rings

Abstract

Disclosed is a bulk bag having self-standing loops. The bulk bag is configured with a bag-shaped body having a reversed “U”-shaped loop protruding upwardly from an outside thereof and configured to flexibly stand upright by itself from a folded position upon unstacking of bodies, wherein the loop is coupled to the body at a position spaced downwardly apart from a top edge of the body by a predetermined distance, the loop having an air tube having a predetermined length and coupled to an outside of the loop. The loop is configured with a semicircular arc-shaped hook portion and “I”-shaped supporting portions respectively extending from opposite ends of the hook portion, and the air tube is coupled with the hook portion and an at least one supporting portion and is heat-treated and flexibly bent at a portion corresponding to a boundary point between the hook portion and the supporting portion.

1 . A bulk bag having self-standing loops, the bulk bag comprising:
 a bag-shaped body  100  having a reversed “U”-shaped loop ( 200 ) protruding upwardly from an outside of the body, the loop ( 200 ) being coupled to the body ( 100 ) at a position spaced downwardly apart from a top edge of the body by a predetermined distance, the loop having an air tube ( 300 ) having a predetermined length and coupled to an outside of the loop,   wherein the loop ( 200 ) is configured with a semicircular arc-shaped hook portion ( 210 ) and “I”-shaped supporting portions ( 220 ) respectively extending from opposite ends of the hook portion ( 210 ), and   the air tube ( 300 ) is coupled with the hook portion ( 210 ) and an at least one supporting portion ( 220 ) and is heat-treated and flexibly bent at a portion corresponding to a boundary point between the hook portion ( 210 ) and the supporting portion ( 220 ).   
     
     
         2 . The bulk bag of  claim 1 , wherein the air tube ( 300 ) has a margin portion ( 310 ) formed at a side thereof by extending along a longitudinal direction of the air tube, such that the margin portion ( 310 ) and the loop ( 200 ) are coupled to each other. 
     
     
         3 . The bulk bag of  claim 2 , wherein the margin portion ( 310 ) and the loop ( 200 ) are coupled to each other by a zipper to allow replacement or recycling of the air tube ( 300 ). 
     
     
         4 . The bulk bag of  claim 1 , wherein the loop ( 200 ) is divided into a non-fixed portion ( 200   a ) that is not fixed to the body ( 100 ) and extends downwardly from the top edge of the body by the predetermined distance, and a fixed portion ( 200   b ) fixed to the body ( 100 ) and extending downwardly from the non-fixed portion ( 200   a ), and
 the air tube ( 300 ) is coupled to the outside of the loop ( 200 ) to simultaneously pass across the non-fixed portion ( 200   a ) and the fixed portion ( 200   b ).   
     
     
         5 . The bulk bag of  claim 1 , wherein the loop ( 200 ) is configured with the semicircular arc-shaped hook portion ( 210 ) and the “I”-shaped supporting portions ( 220 ) respectively extending from the opposite ends of the hook portion ( 210 ), and
 the air tube ( 300 ) is coupled to each of the supporting portions ( 22 ). 
 
     
     
         6 . The bulk bag of  claim 4 , wherein the body ( 100 ) has a guide strip ( 110 ) at a portion thereof that corresponds to an upper side of the fixed portion ( 200   b ), the guide strip having a predetermined length and being coupled at opposite ends thereof to the body ( 100 ) so as to enclose the loop ( 22 ) and the air tube ( 300 ). 
     
     
         7 . The bulk bag of  claim 1 , wherein the body ( 100 ) has an auxiliary loop ( 400 ) positioned inwardly of the loop ( 200 ) and coupled to a side portion of the body to protrude upwardly. 
     
     
         8 . The bulk bag of  claim 1 , wherein the air tube ( 300 ) is comprised of a bundle of multiple tubes ( 330 ) such that even when a part of the tubes ( 330 ) is damaged, a supporting force acting on the loop ( 200 ) is maintained.