U-shaped, Tubular type, square type These 3 kinds of container bag body structure, have you chosen correctly?
If you are looking for flexible FIBCs, there are many things to consider, bag top structure, bag bottom structure, stretched ribs or no stretched ribs, coated film or non-coated film… Wait a minute. However, there is a less considered point is the structure of the FIBC bag, which refers to the way the woven sheet cloth is stitched to form the bag. There are several different bag structures, and these bag structures can greatly affect safe load-bearing, industrial applications, and safe lifting of bags.
U-shaped container bag body mechanism
The U-shaped bag body consists of three pieces of bag body – one of which is a piece of cloth that forms the two sides of the bag body and the bottom of the bag, and the other two pieces of cloth are stitched together to form the other two sides of the bag body. Similar to some other bag structure types, U-shaped FIBCs are also square when filled, especially U-shaped FIBCs with stretched ribs. The U-FIB is an industry standard FIBC that is popular for providing a high safe load capacity (SWL) and durability.
Tubular container bag body mechanism
The round FIBC consists of a piece of cloth forming the four sides of the FIB, with which the top and bottom of the FIBA are stitched. Although a tubular cloth is used, it is also square when the ribbed round FIBC is filled. There is a common misconception that round FIBCs must be round when filled. They don’t have to be round, they just use a round tubular cloth to form the four sides of the FIBC.
Square FIBC bag body mechanism
Square FIBCs are made up of four separate sheets of cloth stitched together to form a square structure. When filled, the square FIBC remains square, similar to other bag body types. In general, square FIBCs hold their shape better than U-shaped FIBCs, and U-FIBCs hold their shape better than round FIBS. The biggest disadvantage of square FIBC bags is that they require a large amount of sewing and stitching to form finished bags, which makes more places in the FIBC bag body have the risk of breaking and leaking. Because square bags can keep square after filling, square bags are ideal for storing and transporting raw materials for container bags.
