Types of Bulk Bags / FIBC

Types of Bags / FIBC

Global-Pak is one of the largest suppliers of FIBCs in North America


There are many common types of FIBCs available in the market place. The most commonly used bulk bags are constructed as either a U-panel or circular construction.We offer a varitey of constructions, such as:
  • U-panel
  • Circular/Tubular
  • Baffle
  • Four Panel

FIBCs are also constructed based on their application. Whether it is being used for food grade, UN rated bags or multi-trip bags, the application is as important as the construction. Common FIBC applications are as follows:
  • Food grade bags
  • UN rated bags
  • Multi-trip bags
  • Chemical bags
  • Conductive or static dissipative bags
  • Valve bags or liquid bags

Each bag has a specific fabric required due to their application. Some bags require antistatic qualities, others do not.
  • Type A Fabric - No electrostatic protection.
  • Type B Fabric - Surface breakdown of <6kV.
  • Type C Fabric - Electrically conductive or groundable.
  • Type D Fabric(Chromiq) - Static dissipative - See Crohmiq bags for further information.
U-panel bag - requires two seams along two opposite sides to create two panels and a U-panel shape. This style of bag has become the industry standard in the United States.

Circular bag - constructed from woven fabric on a circular loom. The fabric is woven into a continuous tube of fabric and cut to the precise height required. The tubular body design is ideal as a linerless option for fine materials. It is also an excellent alternative to the original four panel bag construction.

Four panel bag - considered the original polypropylene design. This construction requires seams along four separate pieces of fabric sewn to create a four panel bag.

Baffle bag - involves pieces of fabric sewn into the corners of the bag to help the bag maintain its cube shape after filling. The baffle design is equipped with holes which allows product to flow through. The baffles helps prevent the bag from bulging and helps sustain the shape of the bag, keeping it upright without losing its shape.
Food grade bags -  are made with resins meeting FDA standards to be used for food purposes. Food grade bags are manufactured in a clean room facility and can be certified by a food safety standard like SQF, AIB and/or BRC. A food grade bag which has been manufactured by a facility that has been audited and is certified by a food safety standard like the American Institute of Baking(AIB), Safe Quality Foods(SQF), or British Retail Consortium(BRC) or others, is considered a certified food grad bag. Our bags are made of resin which meets the FDA food grade requirements.

UN rated bags -  are put through a series of rigorous tests such as, drop test, topple test, and top lift test. The testing is executed by an independent testing facility. Once the bag is UN certified, each bag will be asigned a specific UN number identifying that specific bag. The UN certification usually lasts for one year, or otherwise specified by the testing house, some will certify longer.

Multi-trip bags - ​Most bags are designed with a 5:1 safety factor, meaning the bag is rated to hold 5 times the amount of the bags safe working load. A 5:1 is intended for single use bags. 6:1 bags are designed for multi-uses only.

Chemical bags - used to transport chemicals.

Conductive or static dissipative bags (Anti-static) -  the difference in the two is the flow of the electrical resistance. Conductive bags allow the electrons to flow easily across the bag and charges go to the ground or another conductive object.  Static dissipative bags allow the electrons to move slower and more controlled  through the antistatic fabric, reducing the charge.
 

Valve bags or liquid bags - allow liquid to be stored or transported easily. Valve bags are equipped with a valve port for releasing the liquids in a controlled manner.

Type A Fabric - No electrostatic protection. Type A bags are not treated, nor do they have any requirements as they are not intended for use in potentially explosive atmospheres.

Type B Fabric - Surface breakdown of <6kV. Type B bags are constructed from insulating fabric. Safely uses to transport dry, flammable powders with an MIE of greater than 3mj. Do not use to transport flammable products. No flammable solvents or gas are to be present around the bag.

Type C Fabric - Electrically conductive or groundable. Constructed from fabrics having inter connected conductive threads. These bags must be electrically grounded during the filling and emptying process. However, do not use when ground connection is not present or has become damaged. 

Type D Fabric(Chromiq) - Static dissipative. Constructed from antistatic fabric that includes static dissipative properties, such as the Crohmiq bulk bag. This bag does not require grounding. Do not use when the surface is contaminated or coated with conductive material such as water or grease. Global-Pak offers a Crohmiq bag patented by Texene Packaging Fabrics, which is only produced by a few bulk bag manufacturers in the world.

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