Material Drying
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Internal pores in PPS products
Problem Phenomenon
Internal voids appear in PPS products affecting sealing and strength.
Cause Analysis
Trace moisture or volatiles in PPS material produce gas; insufficient holding pressure.
Solution
Dry at 150°C/3-4h; increase holding pressure and time; optimize venting.
Key Takeaway
PPS pores seriously affect the reliability of sealing parts.
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