Molds & Tooling
5 görüntüleme
EEA extruded film thick at edges and thin in the middle
Sorun Belirtisi
EEA extruded film edges 20-30% thicker than the middle, thickness distributed in a U shape
Neden Analizi
Improper die runner design, low resistance and large flow at the edges; EEA melt elasticity, larger swell at the edges; air ring cooling has different edge effects
Çözüm
1) Adopt coat-hanger die design to balance resistance between the middle and edges; 2) Fine-adjust die gap, slightly larger in the middle and slightly smaller at the edges for compensation; 3) Slightly reduce air ring air volume at the edges; 4) Add restrictor bars to adjust edge flow
Temel Çıkarım
U-shaped thickness is caused by die runner and swell difference; coat-hanger die and gap fine adjustment are the key
Bu faydalı oldu mu?
0 kişi bunu faydalı buldu
Geri bildiriminiz için teşekkürler!