Problem & answerD-01
Capsules Not Closing Properly
Also covers: Open or partially closed capsules
Likely causes
- Locking pressure too low
- Closing plate gap out of specification or plate misaligned
- Closing plate, pins or locking segments worn
- Capsule size does not match the change parts
- Room humidity or temperature outside the controlled range
- Capsules not seated correctly
- Powder trapped between cap and body; closing station dirty
- Powder too fluffy, so the slug is too large for the capsule
- Damaged capsule shells
How to fix it
- 1Stop the machine. Do not keep running while capsules are visibly open: rejects rise and defective product may leave the area unnoticed.
- 2Pull 20–30 capsules and look for a pattern. A consistent fault points to a machine setting; random failures point to capsule or material variation.