Problem & answerI-02
Weak or Partial Seal
Likely causes
- Power too low
- Conveyor too fast
- Head too high
- Cap loose
- Liner inserted incorrectly
How to fix it
- 1Stop the machine.
- 2Confirm the foil liner is correctly seated in the cap.
- 3Confirm caps are tightened to specification.
- 4Lower the head with the handwheel to the correct gap (typically about 3 mm / 1/8 in between cap top and head, or as the sealer manufacturer specifies); test 2–3 bottles after each change.
- 5Centre bottles under the head.
- 6Increase power or reduce conveyor speed in small steps.
- 7Clean the head; check connections and cooling fans.
- 8Run a sealing test and pass the seal check before resuming.
Photos
It is fixed when
Foil bonds fully with a clean, even peel.
Stop it coming back
- Use the validated settings for each bottle and cap combination.
Did this solve the problem?