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Bulk bags or Flexible Intermediate Bulk Containers (FIBC’s) have many options available to customize, pending what requirements you need.

Bulk Bags come in 4 different electrostatic classifications based on the fabric type:

• Type A: No electrostatic protection. Type A bulk bags are the most common type of bags sold worldwide. 
• Type B: Surface breakdown voltage of <6kV. Less common but has some applications.
• Type C: Electrically Conductive / Groundable.  
• Type D: Static Dissipative. These bags do not require grounding.   

Bulk Bags have several different types of basic construction that can vary depending on your application and product:

• U-Panel Bag: A U-Panel bag requires 2 seams along 2 opposite sides to create 2 panels and a "U" Panel shape. This style of bulk bag has become the industry standard in the United States.
• Tubular or Circular Bag: Circular bags are made from fabric that has been woven on a circular loom. The fabric is woven into a continuous tube of fabric and then cut to the correct size height. The tubular body design is ideal for fine materials when a liner is not desired. It is also an excellent alternative to the original four panel bag construction. Capacity is up to 4000 lbs.
• 4-Panel-Bag: A four panel bag is the original polypropylene design. This design requires seams along four separate pieces of fabric sewn to create a four-panel bag. Capacity is up to 4400 lbs.
• Baffle Bag: Baffles are pieces of fabric that are sewn to the inside corners of a bag to maintain its cube shape after filling. The baffles have holes that allow the product to flow freely through them. The baffles also prevent the bag from bulging, which makes it stand up straight and in turn allows the bag to be more efficient in their use of space. Net and tie baffles are another type of baffle option, they are not as common but recently have been growing in popularity. 
• U.N. Certified Bags: U.N. bags are to handle hazardous material. UN Certification involves a testing certification done by an independent testing facility, that puts the specified bulk bag through a set of rigorous tests (i.e. drop test, topple test, and top lift test). These certifications are good for up to 3 years. 

There are also some bags available for various specific use cases, such as:

• Agriculture Bags: These bags are designed for use in the agriculture business for products such as potatoes, onions, and even shellfish. They are ventilated to allow moisture to escape and reduce rot.
• Peanut Bags: Peanut bags are designed specifically by the American Peanut Council to transport in-shell peanuts. 
• Drum Bags: Drum bags can be used in place of steel drums for some materials, or 
• Lined Bags: Bags can have liners installed to help prevent product leakage and reduce moisture. If your product is sensitive to oxidation or requires a more protective liner, foil lined FIBCs are available as well. 
• Food Grade or Pharma Grade Bags: These bags are made in a clean room facility and each bag is inspected for cleanliness to be used in food grade or pharmaceutical applications.

The information above is designed to help you see what the properties are of each type of bag. Our sales and customer service team are technically trained, and they will be glad to help you design or redesign a bag that suites your company specific application. If you have any questions, please do not hesitate to reach out to your sales rep or customer service representative.