Molding Process
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EVA film heat-seal strength is insufficient
Problembeschreibung
EVA film heat seal <4N/15mm, below 8N/15mm
Ursachenanalyse
Heat-sealing temperature <110°C too low, EVA not fully melted for sealing
Lösung
1) Heat sealing at 120-130°C for full melting; 2) Time 0.5-1s; 3) Pressure 0.2-0.3MPa
Wichtigste Erkenntnis
Insufficient EVA heat sealing requires increasing temperature, time, and pressure
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