Problem & answerC-03
Powder Segregation
Likely causes
- Differences in particle size or density
- Vibration during transport
- Over-mixing or prolonged stoppage
- Incorrect blending process
- Improper hopper loading
How to fix it
- 1Stop production immediately.
- 2Check batch blending records.
- 3Inspect the hopper powder for visible separation.
- 4Re-blend only if approved by QA.
- 5Load powder evenly and avoid excessive vibration.
- 6Restart and verify fill-weight consistency.
It is fixed when
Samples from the start, middle and end of the run meet blend uniformity and weight specifications.
Stop it coming back
- Use validated blending procedures.
- Refill the hopper evenly.
- Minimise idle time with powder in the hopper.
Did this solve the problem?