Material Drying
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Internal pores of POM injection molded products
Fenómeno do problema
Internal voids found in POM products.
Análise das causas
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.
Solução
Drying treatment 80-90°C/2-4h; increase holding pressure; optimize venting.
Conclusão principal
POM pores are mainly related to gas generation and holding pressure.
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