Material Analysis
9 views
PMMA Burnt
Problem Phenomenon
Black spots and burn marks at the end.
Cause Analysis
Trapped air diesel effect; or excessive melt temperature decomposition.
Solution
①Open vents (depth 0.02~0.05mm); ②Decelerate at the end; ③Lower the melt temperature; ④Multi-stage injection (slow-fast-slow).
Key Takeaway
Burnt = venting + temperature.
Was this helpful?
0 people found this helpful
Thank you for your feedback!