Product Description
Sling FIBC bag is bulk bags designed and engineered specifically around their lifting system — the heavy-duty woven polypropylene sling straps or loops that run through, around, or over the bag body to distribute the lifting load across the entire bag structure rather than concentrating it at four small corner attachment points. The result is a bag that handles heavier, more awkward, and more demanding lifting scenarios than standard corner-loop FIBCs — while offering the operational flexibility of crane lifting, forklift handling, and single-hook discharge in a single packaging format.
At Tam Tam Packaging, we manufacture sling FIBC bags across the full loop configuration range: standard 4-corner loops, single-loop crane bags, double-loop symmetrical bags, and stevedore-strap port handling bags. Every sling bag is produced from virgin polypropylene to ISO 21898 standards and is available in the full range of sizes, SWL ratings, top and bottom configurations, and optional liner specifications to match your product and operational requirements.
Sling FIBC Loop Types — Quick Comparison Guide
| Loop Type | Lifting Method | Best SWL | Best For |
| 4-Corner loops | Forklift (standard tines) | 500–2,000 kg | General industrial — most versatile |
| Single loop | Crane / single hook | 500–1,500 kg | Fast cycle, vertical space, crane ops |
| Double loop (2) | Crane / 2-hook / forklift | 500–1,500 kg | Heavy / long loads, balanced lift |
| Cross-corner loops | Forklift + crane (hybrid) | 500–2,000 kg | Circular bags, flexible operations |
| Stevedore straps | Crane in port / container ops | 500–2,000 kg | Shipping, ports, container handling |
Why Choose This Bag?
- Sling straps distribute lifting load across the full bag width — reducing stress concentration at individual attachment points vs corner-only loops
- Compatible with crane hooks, forklift tines, and overhead lifting equipment — operational flexibility across different facility layouts
- Heavy-duty reinforced sling stitching rated to full bag SWL with 5:1 or 6:1 safety factor as standard
- Available in all standard construction styles (circular, U-panel, 4-panel) with any top/bottom combination
- Multi-trip durability — sling construction is particularly suited to repeated crane-lift cycles in heavy industrial environments
| 💡 BUYER TIP: When specifying a sling FIBC bag for crane operations, measure the headroom available in your facility from the floor to the crane hook in its highest position — this determines the maximum combined bag height plus sling length that will fit. Bags that are too tall for the available headroom require the crane to be repositioned, slowing operations significantly. |
Typical Applications Industries
- Construction and civil engineering: sand, gravel, crushed stone, and cement handling
- Mining and quarrying: ore concentrates, mineral aggregates, and mine waste
- Port and logistics operations: crane loading and container stuffing
- Industrial manufacturing: raw material input to production lines via overhead crane
- Waste and recycling: heavy waste collection and transport by crane-equipped vehicles
Technical Specifications
| Construction | Circular / U-Panel / 4-Panel (all available with sling/loop options) |
| Loop Configuration | 4-corner loops (standard) / Single loop / Double loop / Cross-corner / Stevedore |
| Loop Material | Heavy-duty woven PP — same material as bag body, reinforced stitching |
| Safe Working Load | 500 kg – 2,000 kg |
| Safety Factor | 5:1 (single-use) / 6:1 (multi-trip) |
| Loop SWL | Each loop / strap rated to full bag SWL minimum |
| Fabric | 100% Virgin PP woven, UV-stabilised |
| Fabric Weight (GSM) | 100 – 250 gsm |
| Coating | Coated or Uncoated |
| Top Options | Open top / Spout top / Duffle top |
| Bottom Options | Flat bottom / Discharge spout / Conical discharge |
| Liner | Optional PE tube, form-fit, or PE/AL foil liner |
| UV Stabilisation | Standard — rated to 2,500 hours |
| Printing | Up to 4-colour flexographic |
| MOQ | 500 bags per specification |
| Certification | ISO 21898; SGS tested |
Frequently Asked Questions
Q1: What is the difference between a sling FIBC bag and a standard 4-loop FIBC bag?
In common usage, the term sling bag refers to FIBC bags where the lifting slings run continuously through or under the bag body — distributing the lifting load across the full bag width rather than at four discrete corner attachment points. This differs from standard 4-loop FIBCs where corner loops are sewn only to the seam area at each corner. In practice, both designs can carry the same SWL, but the sling/loop construction distributes stress more evenly, which is particularly important for crane-lifted applications with dynamic loading.
Q2: Which loop type should I choose for crane operations?
For crane operations using a single hook, choose a single-loop bag — the centralised loop positions the bag correctly under the hook for balanced lifting. And for operations where the same bag is lifted by both cranes and forklifts at different points in the supply chain, choose cross-corner loops which are compatible with both lifting methods.
Q3: Can sling FIBC bags be used for multi-trip operations in mining?
Yes. For mining applications, we recommend specifying bags with 6:1 safety factor for multi-trip rating, UV stabilisation for outdoor exposure, and 180–250 gsm heavy-duty fabric for abrasion resistance from coarse aggregates and ore. The sling construction is particularly suited to multi-trip crane lifting because the distributed load reduces fatigue on individual stitching attachment points compared to concentrated corner-loop designs.
Q4: What is the maximum SWL available for sling FIBC bags?
Our standard sling FIBC range goes to 2,000 kg SWL. For applications requiring higher SWL (up to 4,000 kg), we manufacture custom heavy-duty sling bags with increased fabric weight, reinforced sling construction, and higher safety factor ratings. Contact our sales team with your SWL requirement for an engineering review and quotation.
Contact Us
| Find the right sling FIBC configuration for your lifting equipment and application. Contact us with your SWL, loop preference, and product details for a tailored quote.
→ Request a Sling FIBC Quote |