Blog — Packaging · 5 min read
Bulk bag
handling safety
Restraint, densification and dust containment when filling and discharging FIBCs.
In short
Safe bulk bag (FIBC) handling rests on four disciplines: proper restraint (all four loops on rated equipment, never a forklift tine through one loop), densification during filling so bags stack stably, dust containment through sealed spout connections, and static control — earthing, and the correct FIBC type (A/B/C/D) for the powder and zone.
The post
Restraint — the non-negotiable
A filled FIBC weighs up to two tonnes and has no rigid structure. It must hang from all four loops on a rated frame or lifting beam, or sit square on a pallet — never swing from a single tine, never stand tilted. Fillers and dischargers exist to make correct restraint the only possible way to use them.
The post
Densification — stability engineered in
Powder settles. A bag filled without densification settles in the warehouse instead — leaning, bulging and threatening every stack it joins. Vibrating the bag during filling settles the powder while the bag is still held square, producing a dense, stable, stackable unit and honest volumes.
The post
Dust — seal before you open
The rule for both filling and discharge: make the sealed connection first, move powder second. Filling heads seal the spout with an inflatable collar before product flows; discharge stations clamp the spout into a contained chamber before it is untied. Displaced air goes to extraction, not the room.
The post
Static — the invisible hazard
Powder flowing into or out of a woven plastic bag generates static charge, and many powders form explosive clouds while doing it. FIBC types matter: Type C bags conduct charge to earth (and must actually be earthed); Type D dissipate charge without an earth connection. In zoned areas, bag type, earthing points and equipment certification are specified together — not left to the warehouse.
Common questions
Frequently asked questions.
- How should a bulk bag be lifted safely?
- By all four loops, on rated equipment — a lifting frame, spreader beam or the four-loop hooks of a filler or discharger. Never by one or two loops, never dragged, and never with the load over people. Loop angles should stay near vertical to avoid overloading them.
- What are Type C and Type D bulk bags?
- Static-protection classes. Type C bags are conductive and must be connected to earth during filling and discharge; Type D bags dissipate static safely without earthing. Types A and B offer no or limited protection and don't belong in combustible dust zones.
Related
Related pages.
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