FIBC Bulk Bag Safe Working Load & Lifting Loop Check

Fill volume is the rectangular box of base x fill height. A filled U-panel or circular bag bulges, and a product settles in transit, so the real volume and mass differ; weigh a trial bag before relying on the result. Loops are assumed to share the load equally, which holds only when every loop is lifted at once as the bag was designed. A bag with fewer loops in use, or loops gathered onto one hook, is outside its tested condition unless the label says otherwise. The safety factor here concerns the lifting loops only: seams, the body fabric, the base and the discharge spout each carry load too. In the US, a UN flexible IBC design type must pass a top lift test filled to six times its maximum net mass, held clear of the floor for five minutes with no loss of contents (49 CFR 178.812). **This is a decision-support estimate only.** Never fill beyond the SWL on the label, never stand under a suspended bag, and follow the maker's handling instructions and your local lifting rules.