Molds & Tooling
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PAEK insufficient mold filling flow
Problem Phenomenon
Thin-wall cavity underfilled
Cause Analysis
Processing temperature <350°C, near the melting point the melt viscosity is extremely high; mold temperature low and the melt solidifies quickly
Solution
Increase the melt temperature to 370-390°C; keep the mold temperature at 180-200°C
Key Takeaway
PAEK requires a processing temperature sufficiently above Tm to ensure flowability
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