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.