FIBC

A Flexible Intermediate Bulk Container, commonly abbreviated as FIBC or big bag, is a large, flexible container designed for storing and transporting dry bulk goods. Made from woven polypropylene fabric, FIBCs are lightweight, can be single-use or reusable, and are used for products such as grains, powders, pellets, and granules. They are designed to protect contents from moisture, contamination, and loss during transport and can be stacked during storage.

Construction and variants: Most FIBCs have four lifting loops attached at the corners, a square or rectangular base, and a top opening or discharge spout. Optional features include an inner liner for moisture or gas barriers, and filling or discharge spouts. Variants include standard non-conductive bags and specialized versions intended to manage static electricity or hazards in flammable atmospheres, such as electrostatic dissipative or conductive bags.

Materials and liners: The base fabric is typically polypropylene, formed from filament or tape yarn. Some bags incorporate coatings or barrier films to improve moisture or gas resistance. Inner liners may be made from polyethylene film or foil laminates to protect sensitive contents. There are single-use (disposable) and multi-trip (reusable) designs, and some FIBCs are certified for food-contact or pharmaceutical use where hygiene standards apply.

Sizes, capacities, and handling: FIBCs commonly have nominal volumes around 1,000 to 2,000 liters and payload ratings from about 500 kg up to 2,000 kg or more per bag. They vary in height and width but are designed for forklift handling, palletization, and efficient bulk transport.

Standards and safety: International standards govern their construction, labeling, testing, and use. Labels typically include weight limits, material, batch information, and warnings. Safe handling requires respecting load limits, avoiding sharp edges, proper stacking, and using appropriate liners and closure methods. Food-contact and other industry-specific bags may meet additional hygiene and regulatory requirements.