Injection Molding
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POE injection molded product oil spots
Fenómeno del problema
POE injection molded product surface shows oil spots after demolding, mold release agent residue or lubricant exudation
Análisis de la causa
Too much mold release agent sprayed or uneven distribution; POE internal lubricant stearic acid type exudes to the surface; mold lubricating oil seeps into the cavity
Solución
1) Reduce mold release agent dosage or switch to dry film release agent; 2) Use internal lubricant instead of external release agent; 3) Seal mold lubrication parts to prevent oil from seeping into the cavity; 4) Clean product surface to remove oil spots and then detect the source
Conclusión clave
Oil spots are caused by external sources of release agent and lubricant; reducing release agent and sealing mold lubrication are key
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