Type A Bulk Bags
The most basic bulk bags fall under the Type A FIBC category. These all‑purpose bags are made of plain‑woven polypropylene and offer no static protection, so they should only be used for non‑flammable products. Keep any flammable materials far from these bags.
Type C Bulk Bags
Also known as conductive FIBC bags, Type C FIBC bags have conductive threads woven through the bag that dissipate static energy from the bag’s surface. These are also connected to tabs that have to be grounded during the filling and unloading process. Type C bulk bags are used to store and transport flammable powders or when flammable gasses, dust, or vapors are present.
Type B Bulk Bags
Type B FIBC bags are made of non-conductive materials and can be used to store and transport dry, flammable powders — but not to store flammable vapors. In fact, flammable vapors should not be near Type B bags. These bags should also not be used in the presence of combustible dusts with MIE of greater than 3mj.
Type D Bulk Bags
These static-dissipating bags are similar to Type C, but don’t require grounding. The fabric of Type D FIBC bags has special additives to avoid brush discharges and incendiary sparks. They are best used to store and transport flammable powders or when flammable dust or gasses are present.