Injection Molding
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Severe burr flash on PPS products
Problem Phenomenon
PPS injection molded products have much flash and it is difficult to remove.
Cause Analysis
PPS melt has low viscosity and extremely good fluidity, easily overflowing the parting line to produce flash; the flash is hard and brittle and difficult to remove.
Solution
Increase clamping force; fine parting line fitting; appropriately reduce injection pressure.
Key Takeaway
PPS low-viscosity flash is the norm and needs to be addressed through mold precision.
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