Material Drying
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Internal pores of POM injection molded products
Problem Phenomenon
Internal voids found in POM products.
Cause Analysis
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.
Solution
Drying treatment 80-90°C/2-4h; increase holding pressure; optimize venting.
Key Takeaway
POM pores are mainly related to gas generation and holding pressure.
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