Types of FIBC Bulk Bags A B C & D (2024)

Type A Bulk Bags

Type A FIBCs are made of plain-woven polypropylene and other non-conductive fabrics. Static electricity is generated as products move over or rub against the inside surface of the bulk bag when they are filled/emptied. There is no static protection provided by Type A FIBCs.

Type A bulk bags can be used to safely transport non-flammable products. There should not be any flammable solvents or gases present around a Type A FIBC.

Safe use for type A bulk bags:

• To transport non-flammable products.
• No flammable solvents or gases present around the bag.

Do not use type A bulk bags for:

• Transporting flammable products.
• When flammable solvents or gases are present around the bag.
• Should not be used where a flammable atmosphere with a minimum ignition energy ≤1,000mJ is present.

Type B Bulk Bags

Type B FIBCs are similar to Type A bulk bags in that they are made of plain-woven polypropylene fabrics or other non-conductive material. Also like Type A bulk bags, Type B bags do not have any mechanism for dissipating static electricity.

The difference between Type A & B FIBCs is Type B are made from materials that have a low breakdown voltage to prevent an incident where highly energetic, and dangerous propagating brush discharges occur. Although Type B bulk bags can prevent propagating brush discharges, they are not considered anti-static bulk bags because they do not dispel an electrostatic charge.

Safe use for type B bulk bags:

• To transport dry, flammable powders.
• No flammable solvents or gases present around the bulk bag
• Intended to be used in environments with dust with ignition energies less than 3mJ.

Do not use type B bulk bags for:

• When flammable solvents or gases are present around the bulk bag.

Type C Bulk Bags

Type C FIBCs, also known as conductive FIBCs or ground-able FIBCs, are made from non-conductive polypropylene fabrics interwoven with conducting threads traditionally sewn in a grid pattern. These conducting threads must be electrically interconnected as well as connected to a designated ground/earth during filling and discharging. This connection to the ground/earth during filling and discharging is imperative to the safe use of Type C bulk bags.

Safe use for type C bulk bags:

• To transport flammable powders.
• When flammable vapors, gases, or combustable dusts are present.

Do not use type C bulk bags for:

• When ground connection is not present or has become damaged.
• Resistance from any location FIBC to ground-able point.

Type D Bulk Bags

Type D FIBCs are made from antistatic and static dissipative fabrics designed to safely prevent the occurrence of incendiary sparks, brush discharges and propagating brush discharges without the need for a connection from the FIBC to a designated ground/earth.

Type D bulk bags such as Crohmiq™ bulk bags are manufactured with fabric containing quasi-conductive yarns that safely dissipate static electricity into the atmosphere via safe, low-energy corona discharge. Type D FIBCs can be used to safely package combustible products and handle products in combustible and flammable environments.

Safe use for Type D bulk bags:

• To transport flammable powders.
• When flammable vapors, gases, or combustable dusts are present.

Do not use type D bulk bags for:

• When surface of FIBC is contaminated or coated with conductive material such as grease or other flammable and or combustible materials.

Download National Bulk Bag’s Official FIBC Safety Guide

At National Bulk Bag, safety and reliability are our top priorities. National Bulk Bag’s Official FIBC Safety Guide is split up into four sections for your convenience and contains comprehensive safety information, best practices, and key safety tips.

Click the button below to download National Bulk Bag’s Official FIBC Safety Guide!

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