Injection Molding
2 views
Burnt yellow spots on injection molded products
Problem Phenomenon
Yellow-brown burnt spots appear locally on the product, accompanied by an odor
Cause Analysis
>260C local overheating causes material decomposition in dead corners, producing HF
Solution
Lower the temperature, check temperature control elements, reduce dead corners, and reduce the injection speed
Key Takeaway
Thermal decomposition produces HF and must be strictly avoided
Was this helpful?
0 people found this helpful
Thank you for your feedback!