Molds & Tooling
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PTFE Mold Sticking
Fenómeno del problema
PTFE compression molding has demolding difficulty, product surfaces are scratched, and mold cleaning is frequent.
Análisis de la causa
Insufficient mold cavity surface polishing Ra>0.8μm; microscopic adhesion between PTFE powder and mold; insufficient demolding angle; improper mold material selection.; When troubleshooting on site, verify item by item according to this mechanism, avoiding blind machine adjustment based only on experience
Solución
①Polish mold cavity to Ra≤0.8μm to reduce sticking; ②Select stainless steel material; ③Reasonable demolding angle; ④Use mold release agent assistance when necessary.; After adjustment, continuously sample to verify the effect, confirm stability before resuming mass production
Conclusión clave
PTFE mold's Ra0.8 polishing standard is the anti-sticking foundation; stainless steel material is the standard choice; demolding design is considered upfront.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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