Failure Lab
Why is my bulk bag leaking powder?
Fine powder is passing through seams or the woven fabric, or escaping at spouts.
Possible causes
- No sift-proof seams for a fine powder
- Uncoated fabric
- Spouts not tied off
- Abrasion in transport
What to inspect
- Seam construction on the spec
- Coating
- Spout closure
Potential corrective actions
- Specify sift-proof seams or a liner
- Use coated fabric
- Train on spout closure
Related
Educational only — not engineering or regulatory advice. If there's a safety risk or hazardous material involved, stop use and consult a specialist.