: injection troubleshooter :

machine

· clamping pressure too low
· injection pressure too high
· injection speed too fast

mould

· inadequate mould supports
· clamping force too low
· damaged mould surface: parting line
· excessive projected area

material

· melt too hot
· viscosity too low

1st

reduce injection speed

2nd

reduce injection pressure and/or booster time

3rd

increase clamping force

4th

check mould for proper mould support and/or parallelism

5th

reduce melt temperature

6th

reduce mould temperature

7th

check excessive vent depths

8th

change to higher clamping machine