Asian. Description: The product has the black spot fires.
? B. Cause?
- Apply spray output is too high.
? - The temperature of the resin is too high.
? - The air trapped within.
? C. Remedial measures?
- Reduce injection pressure, injection speed.
? - Check the exhaust system.
? - Right before the molding material drying, moisture content of the material <0.1%.
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