This FIBC selection guide is written for bulk chemical and agri applications where bag type, liner choice, electrostatic control and handling risk must be checked before purchase.
Flexible Intermediate Bulk Containers are not a single product — they are a system specification. The right FIBC for a food-grade powder is different from the right FIBC for a combustible chemical or a heavy-density mineral. Getting this decision wrong has real consequences.
Antistatic Type Selection
The four FIBC types — A, B, C and D — exist because of electrostatic discharge risk. Type A bags are standard woven polypropylene, suitable only for non-flammable, non-combustible products. Type B bags have a controlled breakdown voltage. Type C bags are fully conductive and must be grounded during filling and discharge. Type D bags are dissipative and safe without grounding. Misclassifying your product and using the wrong type is a fire and explosion hazard.
Safety Factor and SWL
Every FIBC has a Safe Working Load and a safety factor — typically 5:1 or 6:1. A 5:1 bag rated at 1,000 kg must withstand 5,000 kg in a drop test without failure. Understand the density and pack weight of your material before specifying capacity.
Food Grade and Pharma Requirements
Food-grade FIBCs require virgin polypropylene, no recycled content, specific liner specifications and documentation confirming food contact compliance. Pharmaceutical applications add GMP requirements and additional documentation protocols.
Fill and Discharge Configuration
Choose spout configurations based on your filling equipment and product flow characteristics. Coated fill spouts reduce moisture ingress. Iris closures on discharge spouts give precise flow control for fine powders.