How Type C Bulk Bags Work
Type C bulk bags use interwoven conductive threads within the polypropylene fabric. These threads are all electrically interconnected and designed to be attached to a grounding point during use.
Once grounded, the bag safely dissipates any static electricity generated during filling or discharge, preventing brush discharges, spark discharges, or propagating brush discharges that could ignite combustible materials in the surrounding environment.
Without grounding, the bag functions like a Type B, offering no meaningful ESD protection. That’s why proper grounding procedures are critical for safe operation.
FIBC Type C vs Other Bulk Bags
To help guide your purchasing decision, use the table below to understand how Type C FIBC bags compare to Types A, B, and D across key safety categories:
| FIBC Type | Static Protection | Use With Flammable Dust | Use With Flammable Gases/Vapors |
|---|---|---|---|
| Type A | None | ❌ No | ❌ No |
| Type B | Low breakdown voltage | ✅ Yes | ❌ No |
| Type C | Groundable conductive fabric | ✅ Yes | ✅ Yes |
| Type D | Static-dissipative material | ✅ Yes | ✅ Yes |
Use the chart to help identify which type of bulk bag is appropriate for your end use, depending on the sensitivity to ignition of the product and the surrounding atmosphere.
Need help choosing the right FIBC type? Contact us for application-specific guidance from our team of bulk packaging experts.
General Information Relating to Our Type C Bulk Bags
The Risk of Static Ignition
Electrostatic discharge is a leading cause of ignition in combustible dust explosions, especially in powder handling environments. That’s why selecting the right FIBC isn’t just a matter of preference, it’s a key part of your facility’s risk mitigation strategy.
At Palmetto Industries, we don’t just sell bags, we help buyers navigate complex decisions. We’ll walk you through the ESD considerations, grounding protocols, and zone classification requirements to ensure your operation stays compliant and safe.
The Grounding Process Explained
Proper grounding is the most critical factor when using Type C bags. Here’s how it works:
- Attach the conductive loop or grounding tab of the FIBC to a known ground point.
- Use a verified ground monitoring system when available to ensure the connection is continuous.
- Inspect the loop, fabric integrity, and any terminals before every use.
- Train staff to never fill or empty a Type C bag unless it is actively grounded.
This process is simple but essential, and is often overlooked in operations that haven’t standardized their grounding procedures.
Request a Quote for Our Type C FIBC Bulk Bags
Palmetto Industries provides Type C bulk bags built for high-risk environments and tested for safe performance under the most demanding static-sensitive conditions. Whether you're in chemical production, food manufacturing, or powder processing, we’ll make sure your bags meet regulatory and operational expectations.
Ready to get started? Request a quote or contact our team to review your application and compliance requirements.
