5 Most Common Types of FIBC Bulk Bags

FIBCs (Flexible Intermediate Bulk Container) is usually designed for handling dry and flowable materials or substances, and it shows a lot of benefits in the working processing such as storage, transportation, loading and discharging. There are different types of Bulk Bags on the market which may confuse or even annoy those new or less experienced users, therefore, it's getting important to understand the characteristics of FIBCs and choose the most suitable type according to their unique needs.

FIBC bags are primarily used for the storage and transportation of dry, flowable products such as grains, chemicals, minerals, and powders. 

These bags are lightweight but incredibly durable, making them ideal for storing bulk products in large quantities. 

FIBC bags are also widely used for construction materials, like sand or gravel, and in the agricultural sector for packaging fertilizers and seeds. 

Their versatility makes them essential for industries that require efficient material handling solutions, and they are designed to handle weights from 500 kg to 2,000 kg, depending on the specific bag type.

1. Based on shape: U-Panel, 4-Panel, Circular, Baffled, Single Loop, and Double-Loop.

U-Panel

- U-Panel Bulk Bags: Constructed with three main pieces of fabric and Resembls as the letter "U", this type of bag apply one piece of fabric fully shaping the bottom and two sides of the bag. The other two sides are usually sewn with two additional pieces of fabric. 

- U-Panel is an industry standard and the most popular type. After being filled, the U-Panel is able to maintain a square shape which allows for easy stacking and handling. 

- U-Panel is widely used for bulk storage because of their durability and ability to hold their shape.

4-Panel

- 4-Panel Bulk Bags: This type bag is commonly built with 5 pieces of fabrics, 4 side panels and 1 base panel (mostly sewn together). 

- Compare with U-Panel and Circular bags, due to the many stitching holes, 4-Panel bulk bag has a greater risk of leakage.

- Thanks to superior structure and shape retention, 4-Panel can properly hold square shapes after being fully filled, making them ideal for stacking and storage in confined spaces. 

- 4-Panel bags are a favorite choice in industries that value stability, like the food, chemical, and pharmaceutical sectors.

Circular

- Circular Bulk Bags, also known as Tubular Bulk Bags, commonly constructed with two main body components: a whole piece fabric as the body tube sewn with a base panel. 

- This type of structure eliminates seams along the sides body fabric, reduces risk of leakage

- After fully filled, this type bags resemble somewhat like a square or rectangular shape rather than like it's name as circular shape. However, they will not hold their shape as good as U-panel or 4-panel bags.

- Circular FIBC bags are particularly recommended in industries where the bulk material is less dense, as these bags are less likely to bulge or lose their shape when filled compared to other types. 

Baffled

- Baffled Bags are also called Q Bags in some regions they can better maintain a square shape and prevent the bulging or "bellying" sometimes seen in other designs and allow for better stackability and more efficient use of storage space when filled. 

- A Baffle usually formed as a smaller sized fabric panel sewn inside each of a bulk bags 4 corners for reinforcement, and better support the square shape when filled. 

- It can be seen in the structure of a U-panel, 4-panel or circular-style bag and commonly used in applications where material flow needs to be controlled or in situations where space is a premium

Single & Double Loop 

- Single and double-loop FIBC bags are constructed from a single piece of fabric that includes integrated loops for lifting. 

- Single Loop Bulk Bags: As the name indicates, the bag loop is formed by the extension of the bag body fabric, one loop per bag. 

- Double-loop Bulk Bags: Two bag loops are formed by the extension of the body fabric on each side of the bag body. 

- Both single loop type and double-loop type are widely considered as being more cost-effective in all listed construction styles.

- Single and double-loop bags are especially popular in industries as agriculture and construction where the cost-effectiveness of the packaging is important. 

2. Based on material: 

- Polypropylene (PP) woven fabric 

- Polyethylene (PE) woven fabric

3. Based on function:

Based on function, Bulk Bags can be categorized as Anti-static Bags, UV-resistance Bags, Conductive Bags, Ventilated Bags, Food Grade Bags, Pharmaceutical Grade Bags, Aluminum Foil Bags, etc.

4. Recommended Applications:

FIBC Bulk Bags are a prevailing packaging solution in a wide range of industries and scenarios:

- New energy battery materials: The moisture and oxygen sensitive materials such as lithium-ion anode material, cathode material rely heavily on the well sealed packaging bags, and the engineered aluminum foil linered bulk bags can maximum protect the material intact and integrity. 

- Food Industry: bulk packaging of food products such as flour, sugar, and spices

- Agriculture: handling, storing and transporting grains, animal feed, fertilizers, seeds and so on

- Construction materials such as sand, cement and gravel etc.

- Pharmaceuticals: The high purity and strength of FIBC bags make them suitable for pharmaceutical powders and other sensitive materials.

- Chemicals: FIBC bags are widely used for transporting chemicals and powders in large quantities.

Bojin BR6721 is specially designed for constructing FIBC Bags, Bulk Bags, Big Bags, Ton Bags. Excellent adhesion and strength, long-lasting holding power, resists abrasion, scuff and tearing, seamlessly bonding the Inner Liners(e.g. aluminum liner) and the Outer Bags. Keep the liner layer integrity and better prevent moisture and oxygen.