Molding Process
5 views
EVA film heat-seal strength is insufficient
Problem Phenomenon
EVA film heat seal <4N/15mm, below 8N/15mm
Cause Analysis
Heat-sealing temperature <110°C too low, EVA not fully melted for sealing
Solution
1) Heat sealing at 120-130°C for full melting; 2) Time 0.5-1s; 3) Pressure 0.2-0.3MPa
Key Takeaway
Insufficient EVA heat sealing requires increasing temperature, time, and pressure
Was this helpful?
0 people found this helpful
Thank you for your feedback!