Specifying polymer nozzle shutoff in Gas analysis

During a Gas-assisted Fill+Pack analysis, you may want to terminate polymer injection before gas injection begins.

For example, you may want to inject polymer to 80% of the total cavity volume, and wait 2 seconds before injecting the gas. To simulate the polymer nozzle shut-off at a specified percentage of fill, you need to set the velocity/pressure switch-over to a %volume filled, and then set a packing profile duration of zero, as indicated below.

  1. Click Process Settings (Home tab > Molding Process Setup panel > Process Settings), or double-click the Process Settings icon in the Study Tasks pane.
  2. In the Velocity/pressure switch-over drop-down list, select by %volume filled.
  3. Enter the required percentage of fill to reach before gas injection begins.
  4. In the Pack/holding control drop-down list, select % Filling pressure vs time, and click Edit profile....
  5. Enter Duration = 0, % Filling pressure = 0 into the first row. If other values are entered in the table, select the row number and then press delete
  6. Click OK.
  7. Click OK to close the Process Settings Wizard when you have finished specifying process settings.
Parent topic: Gas injection control