Flexible Intermediate Bulk Containers (FIBCs), also known as bulk bags, super sacks, or big bags, are practical solutions for storing and transporting dry bulk materials. Made from woven polypropylene, FIBCs are cost-effective and designed for handling large quantities efficiently, reducing labor compared to other containers.

FBIC bags come in several styles:

  • Circular: Ideal for fine products and often used without a liner.
  • 4-Panel: Versatile for various applications.
  • U-Panel: Economical and widely used in construction.

FIBC types:

  • Type A: Basic polypropylene, not for flammable materials.
  • Type B: Prevents static discharges but not anti-static.
  • Type C: Contains conductive threads and is safe for flammable powders.
  • Type D: Handles static electricity in hazardous environments.

Choosing the right FIBC is crucial. The experts at UBI are here to help you find the best solution for your needs.

Type A FIBC Bags

fibc bag

Type A Flexible Intermediate Bulk Containers (FIBCs) are constructed from plain woven polypropylene and other non-conductive materials. Unlike other FIBCs, Type A bags do not offer electrostatic protection, making them unsuitable for transporting combustible or unstable materials. These bags are designed to handle bulk dry goods where static electricity is not a concern.

The woven polypropylene material can generate friction against the inner lining of the bag, leading to electrostatic buildup. This buildup poses a risk in events where flammable substances are present. Therefore, Type A FIBCs should not be used in such hazardous conditions.

Type A FIBCs are ideal for industries handling non-combustible materials, such as agriculture, construction, and mining. They offer a durable, cost-effective solution for storing and transporting bulk items safely in non-hazardous environments.

For environments requiring static protection, consider exploring other types of FIBCs designed to address electrostatic risk.

Type B FIBC Bags

pp woven bags

Flexible Intermediate Bulk Containers (FIBCs) are classified as Type B when they have a breakdown voltage of less than 4kV. Made from materials designed to prevent propagating brush discharges (PBD), Type B FIBCs help mitigate the risk of high-energy static charges caused by friction. While Type B bags, like Type A, are prone to electrostatic charges, the materials used in their construction reduce the risk of highly energetic charges caused by friction.

While Type B bags are not suitable for highly flammable items, they are appropriate for environments where minor combustible dust with a minimal ignition energy (MIE) of more than 3mj is present, provided that flammable vapors or gases are absent. Common applications include chemical industry, food processing, and pharmaceuticals, where these bags safely handle non-flammable products with lower risk factors.  

Industries dealing with materials that pose a minor combustible dust hazard can benefit from Type B FIBCs. They offer a safer alternative for transporting and storing bulk materials, aligning with safety standards while enhancing handling and efficiency.  

Type C FIBC Bags

Type C FIBC bags are designed with safety in mind, featuring a conductive and groundable construction. These bags are made from woven non-conductive polypropylene combined with an outer grid of conductive materials. This conducive grid allows the bags to be grounded, which is essential for dissipating static electricity and reducing the risk of sparks that could ignite flammable powders, vapors, gases, dust or solvents.

The grounding capability of Type C FIBCs is particularly beneficial in industries where static control is crucial. They are ideal for applications in petrochemicals, pharmaceuticals, and mining, where safely handling powdered substances is a priority. The grounding feature helps to ensure safe and efficient handling, minimizing the risk of static-related incidents.

However, Type C FIBC bags are not recommended for high-voltage environments or situations where static electricity control is unnecessary.

Type C FIBCs provide a dependable solution for static-sensitive environments, enhancing safety and efficiency in the transportation and storage of bulk materials.

Type D FIBC Bags

super sacks on pallets

Type D FIBC bags, also known as antistatic bags, are engineered to handle static electricity with advanced safety features. These bags are made from non-conductive polypropylene fabric interwoven with conductive threads, creating a grid pattern that facilitates the safe dissipation of static charges. This design minimizes the risk of sparks or ignition, making Type D FIBCs ideal for transporting combustible materials in environments with flammable gases, vapors, dust, or solvents.

Unlike Type C bags, which require grounding to manage static electricity, Type D FIBCs inherently resist static buildup without needing additional grounding equipment. This built-in static control feature enhances safety and convenience, especially in industries such as chemical industry, pharmaceuticals, and food processing, where handling flammable or explosive materials is common.

However, Type D FIBC bags may not be the most economical choice if static control is not a primary concern. In less hazardous environments where static electricity is not a significant issue, other FIBC types might offer more cost-effective solutions without compromising safety.

For operations where managing static electricity is crucial, Type D FIBCs provide a reliable and efficient option, ensuring safe and effective handling and transport of bulk materials.

Get FIBC Bags That Are Just Your Type

Discover FIBC bags that perfectly meet your needs. Flexible Intermediate Bulk Containers (FIBCs) are versatile solutions for bulk storage and transport across various industries. They come in four types: 

  • Type A: Basic polypropylene, ideal for non-flammable materials.
  • Type B Prevent static discharges but in not anti-static. 
  • Type C: Features conductive threads, suitable for flammable powders. 
  • Type D: Safe for environments with static electricity and flammable materials.  

At United Bags, we offer top-quality FIBCs to ensure you always have the right bag on hand. Explore our selection of FIBCs and use our bag builder to find the perfect fit. For personalized assistance, contact us today.