About this result
The Confidence of Fill result indicates this area of the part may be difficult to fill with plastic. This is because the pressure drop is too high at the point you selected, compared to the maximum injection pressure.
The pressure drop is the drop in pressure from the initial injection pressure to the pressure recorded at the moment the part was filled, for the entire model.
The lower the pressure drop values recorded, the more chance you have of the part filling completely.
What problems can high pressure drop cause?
If the pressure drop is greater than 80% of the injection pressure, there may be filling problems. In particular, the part may short shot.
What to do next
When the pressure drop is high, there are a number of ways you can improve the moldability of the part:
- Increase the maximum injection pressure for this part
- The pressure drop is greater than 80% of the set maximum injection pressure. To improve the confidence of this part filling, you could increase the injection pressure slightly to compensate for the high pressure drop through the cavity.
- Alter part geometry
- If the part consists of a complex and thin geometry, this can cause filling difficulties which require high injection pressure to complete the filling. If altering injection pressure is not possible, you may need to change the part geometry.
- Alter the processing conditions of the currently selected material
- The recommended processing conditions can be changed. To improve this Confidence of Fill result, you could increase the melt temperature of the current material.
- Select a different material
- If you choose a material with a higher melt flow rate, less injection pressure will be required to fill the part.
- Move the polymer injection location
- You can improve the likelihood of all sections of a part filling by moving the polymer injection locations closer to the problem area. Also, adding more injection points can improve the likelihood of all sections of a part filling.