Description
The single-sling FIBC big bag has one central lifting loop sewn to the top panel of the bag for lifting by crane, hook loader, or single-arm forklift attachment. It is the most compact FIBC design, widely used on construction sites and in operations where a single overhead lift point is more practical than managing four corner loops or two slings.
NovoPacks supplies single-sling FIBC bags — also called sling bags, crane bags, one-loop FIBCs, or sometimes builders bags — direct from the manufacturer to European buyers. Safe working loads range from 500 kg up to 2,000 kg at a 5:1 safety factor.
When to Use a Single-Sling FIBC
The single central loop makes these bags fast to attach in overhead crane operations. A crane operator hooks the single sling in one movement, compared to threading two or four loops onto a spreader bar. In construction and aggregates, single-sling bags are typically loaded by machine (excavator or skip loader), lifted and placed precisely by crane or hook loader, and emptied at the point of use by discharge spout or by cutting the bottom seam.
Single-sling FIBCs are also used in agricultural and industrial settings where a fixed overhead crane handles bags rather than a wheeled forklift, and in waste management and recycling where bags need to be lifted, moved, and tipped by crane or hook vehicle.
For operations using a standard forklift with twin tines, a four-sling or double-sling FIBC is more appropriate. The single-sling design is specifically suited to hook and crane applications.
Construction and Specifications
Single-sling FIBCs are manufactured from high-tenacity woven polypropylene. The single lifting loop is stitched across the full width of the top panel, distributing the load across the entire top seam rather than concentrating it at one point. Standard fabric weight: 100 to 180 GSM.
Top options: open top, duffle or skirt top for dust containment, or fill spout for nozzle filling. Bottom options: flat bottom for standard pallet placement, or discharge spout with closure for controlled emptying. PE liners from 60 to 150 microns are available where moisture or contamination protection is required.
Certifications
Food-grade single-sling FIBCs compliant with EU Regulation 10/2011 are available for food applications. Standard and food-grade PE liners are available. For hazardous goods, UN-certified single-sling bags with UN 13H3 markings are available at 6:1 safety factor.
Frequently Asked Questions
What is a single-sling FIBC big bag?
A single-sling FIBC is a flexible intermediate bulk container with one central lifting loop on the top. It is designed for crane, hook loader, or single-point lifting. Also called a one-loop FIBC, crane bag, or sling bag, it is the most common FIBC format in construction, aggregates, and waste management where overhead crane or hook handling is used.
What is the difference between a single-sling FIBC and a builders bag?
In the UK market, a builders bag typically refers to a 500 kg to 1,000 kg woven sack for sand, gravel, and garden materials — these are functionally single-sling FIBCs. The term FIBC tends to be used for the larger industrial versions (up to 2,000 kg) with more specification options. A NovoPacks single-sling FIBC covers both the smaller builders bag range and the larger industrial sizes, all with the same single central loop design.
Can a single-sling FIBC be used with a standard forklift?
Not easily. A standard forklift with twin tines is designed for two-loop or four-loop FIBC bags. A single-sling bag is best suited to crane hook, hook loader vehicle, or a dedicated single-arm forklift attachment. For standard forklift operations, a four-sling or double-sling FIBC will give better results.
What loads are single-sling FIBCs typically used for?
The most common applications in Europe are construction aggregates (sand, gravel, rubble), garden and landscaping materials (topsoil, bark, compost), waste and recycling streams, and agricultural commodities in overhead crane-fed filling stations. The single-loop design suits these applications because precise crane placement and fast hook attachment matter more than multi-directional forklift access.
How long does delivery to Europe take?
A full truck of single-sling FIBC big bags typically reaches most EU destinations within 14 days of order confirmation. Stock sizes can be held in Europe for rapid dispatch. Contact us for volume pricing and call-off delivery arrangements.