Baffle Bags
“The bag that refuses to bulge.”
A standard filled FIBC rounds outward, taking the shape of what is inside it. Every rounded bag in an export container pays freight for dead air. Baffle bags integrate internal perforated fabric baffles stitched corner-to-corner, restraining the walls to maintain a square, cubic form from filling through discharge.
The Engineering Behind This Construction
Baffles are fabric panels stitched into the four internal corners of the bag. As material fills the chamber, baffles come under tension and pull inward against outward hydrostatic pressure.
Internal panels are precision-perforated to ensure free-flowing movement between all four corners during filling, preventing material bridging during high-speed discharge.
By maintaining square geometry, baffle bags eliminate pallet overhang and reduce ocean freight cost per metric ton by up to 15-25%.
Best Suited To
- ✓High-volume maritime container export programmes where freight is a major share of landed cost
- ✓Warehouses stacking 2 to 3 tiers high on racking or flat floor
- ✓Free-flowing granular chemicals, minerals, plastic resins and seeds
- ✓Automated packaging lines requiring exact dimensional repeatability
Where This is the Wrong Economy
- ✕Very coarse, highly abrasive aggregates that require simple open containment
- ✕Materials with severe bridging tendencies where internal panels impede gravitational drop
- ✕Single-tier domestic shipments where freight volume optimisation is secondary
Specification Parameters
| Safe Working Load (SWL) | 500 kg to 2,000 kg |
| Safety Factor (SF) | 5:1 (Single-trip) / 6:1 (Multi-trip heavy duty) |
| Fabric Construction | Flat woven polypropylene with ultrasonic/punched baffle panels |
| Fabric Coating | Uncoated, or coated 1 side / 2 sides (25–35 GSM PE) |
| Seam Sealing | Standard dust-proof, double dust-proof or triple cord sift-proof |
| Printing | Up to 4 colours across exterior panels |
Container Utilisation
Square bags sit flush against each other and against container walls, converting dead air into payload volume.
Stacking Stability
Vertical planar walls distribute weight evenly, allowing stable two-high and three-high warehouse stacking without tilting.
Pallet Discipline
Bags stay within standard pallet boundaries (1100x1100mm / 1200x1000mm), eliminating forklift puncture and racking friction.
Reduced Storage Footprint
Square vertical profiles allow warehousing facilities to store more metric tons within the same floor square-footage.
Available Lifting:
- • Corner seam loops with reinforcement pads
- • Cross-corner loops for fast forklift tine entry
- • Stevedore straps for crane and vessel handling
Filling & Discharge:
- • Top filling spout with dust tie
- • Top duffle skirt for high-volume mechanical drop
- • Discharge spout with iris safety closure and petal lock
Engineer your Baffle Bags specification.
Provide your cargo weight, target bulk density, and facility handling requirements. We evaluate your application and supply an itemized quotation within 24 business hours.