Flexible Intermediate Bulk Containers (FIBCs) are relied on for transporting and storing bulk materials safely and efficiently. But depending on the application, the type of coating applied to the bag can significantly influence its performance. Whether it’s protecting against moisture, preventing contamination, or improving durability, choosing the right coating is essential.
Coated vs Uncoated FIBCs
Uncoated FIBCs are breathable and ideal for transporting materials like grains or seeds that require air circulation. However, they offer little protection against dust, moisture, or cross-contamination.
Coated FIBCs have an additional polypropylene film laminated to the inside or outside of the bag. This helps seal the fabric’s weave, offering:
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Moisture resistance
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Dust containment
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Barrier against fine powders
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Protection during outdoor storage
Common Types of Coating
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Laminated Polypropylene
Most common coating, it creates a waterproof barrier. Suitable for hygroscopic materials like cement, flour, or powdered chemicals. -
Anti-Static Coating
For FIBCs used in explosive or flammable environments, anti-static coatings can prevent ignition from electrostatic discharge. -
UV-Coated Fabric
Bags stored outdoors benefit from UV-resistant coatings that prevent degradation caused by sun exposure.
When to Use Coated FIBCs
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Shipping or storing moisture-sensitive materials
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Preventing product loss from fine powders escaping
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Protecting goods in high-humidity or outdoor environments
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Enhancing shelf life of packaged contents
If you’re transporting dry, free-flowing materials in a closed environment, uncoated FIBCs may still be a better, more cost-effective choice.
Consider Liners for Extra Protection
While coatings offer external protection, liners are inserted inside FIBCs for direct product contact and superior containment. In cases where moisture protection or chemical resistance is critical, using both a liner and a coated bag provides a dual barrier.
Conclusion
Choosing the right FIBC coating is not just about material preference—it’s about aligning your packaging choice with the nature of your product and its journey. Whether it’s a need for waterproofing, UV resistance, or anti-static protection, there’s a coating solution designed to preserve product quality and safety throughout the supply chain.
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