Four Panel Bags
“Square geometry. Four independent load faces.”
Four Panel bags are manufactured from four separate vertical fabric pieces joined to a separate base panel. This four-seam structural design creates defined corners and flat planar walls that resist rounding significantly better than circular tubes.
The Engineering Behind This Construction
Constructed from four distinct woven side pieces sewn along each vertical corner seam down to a square base.
The vertical seams act as load-bearing vertical ribs, providing rigidity and shape retention under heavy compaction.
Provides four large, flat external faces ideal for high-definition 4-colour technical labeling, hazardous warnings, and brand graphics.
Best Suited To
- ✓Packaged products requiring clear multi-language instructions and barcode panels
- ✓Chemical and mineral powders requiring rigid upright warehouse positioning
- ✓Bulk agricultural commodities destined for retail re-packaging hubs
Where This is the Wrong Economy
- ✕Extreme ultrafine powders where eliminating vertical seams entirely is preferable (choose Circular)
- ✕Applications with extreme cubic constraints where internal baffles are mandatory (choose Baffle)
Specification Parameters
| Safe Working Load (SWL) | 500 kg to 2,000 kg |
| Safety Factor (SF) | 5:1 or 6:1 |
| Fabric Weight | 140 to 240+ GSM UV-stabilised woven PP |
| Lifting Loops | Heavy webbing cross-corner or sewn along vertical seams |
| Sift Prevention | Single, double or triple felt cord dust-proofing |
| Testing Validation | Cyclic proof testing and break testing on our certified rig |
Distinct Square Profile
Four vertical corner seams establish defined edges that maintain square profile better than seamless tubes.
Superior Print Surfaces
Flat woven side panels can be printed before assembly with up to 4 colours across all four sides.
Corner Seam Reinforcement
Loop attachments stitched into vertical corner seams transfer lifting stresses evenly through the heavy vertical joins.
Dimensional Customisation
Side panels can be independently sized to produce non-standard aspect ratios, ultra-tall bags, or low-profile designs.
Available Lifting:
- • Corner seam loops sewn into vertical joins
- • Cross-corner loops with safety webbing
- • Stevedore sling attachments
Filling & Discharge:
- • Filling spout with swan-neck tie
- • Open top with drawstring closure
- • Bottom discharge spout with star or iris protection flap
Engineer your Four Panel 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.