Why a bag needs internal bracing
Without internal baffles, a filled FIBC bulges into a barrel shape: it wastes container space, stacks poorly and can destabilise a pallet. Baffles are internal fabric panels that restrain the side walls. The right baffle depends on whether the bag has a form-fitted liner.
Mesh baffle
Suitable for all FIBCs without an integral form-fitted liner, with no base-fabric matching requirement. The open mesh lets material flow freely during filling and discharge, while shaping the bag to reduce bulging and improve stack stability.
PP baffle
For all FIBCs without a form-fitted liner; the baffle fabric must match the bag body fabric. High strength and wear resistance strongly restrict expansion, keeping the bag square and rigid under full load — suited to multi-layer stacking and long transport.
Form-fitted-liner baffle
A dedicated structure for bags with an integral form-fitted liner. Mesh and PP baffles cannot be substituted: the baffle material fully matches the liner, preserving sealing, moisture and oxygen barrier while preventing liner wrinkles and local bulging.
Comparison
| Mesh baffle | PP baffle | Form-fitted-liner baffle | |
|---|---|---|---|
| Bag type | No form-fitted liner | No form-fitted liner | Only with form-fitted liner |
| Fabric match | Not required | Must match body fabric | Must match liner film |
| Material flow | Excellent | Good | Good |
| Shape control | Good | Strongest | Liner-safe, uniform |
| Best for | Fast filling / discharge | Heavy loads, export stacking | Foil / PE barrier bags |
Continue in the Knowledge Hub
