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304 31 Flow Lines
Figure 31.2 Uneven flow progression resulting in a meld line that was called out as a flow line
Computer flow analysis will help identify areas that will be prone to experiencing
flow pattern issues. Running an analysis before a mold is built will help minimize
the risk of fill pattern problems. If the mold has already been built flow leaders or
flow restrictions may need to be added to compensate for the flow issues.
31.3.3 Flow Lines Troubleshooting Machine Issues
Machine impacts on flow line defects include:
Velocity to pressure (V to P) transfer
Machine performance