What are the differences between type A B C & D fabric in FIBCs?

When FIBCs are filled and discharged, the flowing of the finely powdered substances can cause a buildup of static electricity. Removing and or preventing an electrical charge is imperative in the packaging of flammable and combustible materials OR in an environment where combustible dust is present. National Bulk Bag will work with you to determine the right type of fabric to ensure safe handling of your product.

For more information on types of bags, see our “Static Electricity in FIBCs: How to Avoid the Dangers of Storing Combustible Products” blog post by clicking here. To speak with one of our experts to determine which type of bag is right for your application, click here to fill out our “Get Quote” contact form or call us at 1-888-237-4224.

There are four specific types of bags, each with unique features and safe uses. Please take some time to read about the different types of FIBC fabric and how they should and should not be used.

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It’s our mission to make your buying experience easy, informative, and enjoyable. Our buyer’s guide includes critical information ranging from types of bags to important safety information about handling and transportation.

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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 A Bulk Bags - National Bulk Bag
Type B Bulk Bags - National Bulk Bag

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.

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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