Material Drying
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Internal pores of POM injection molded products
Fenómeno del problema
Internal voids found in POM products.
Análisis de la causa
POM is not sensitive to hydrolysis, but if it contains trace moisture or degradation gas, pores will form in the product; insufficient holding pressure is also a cause.
Solución
Drying treatment 80-90°C/2-4h; increase holding pressure; optimize venting.
Conclusión clave
POM pores are mainly related to gas generation and holding pressure.
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