Blow Molding
5 görüntüleme
Insufficient Melt Strength of PBT '2079851475616104457 Parison
Sorun Belirtisi
In PBT extrusion '2079851475616104457, the parison relaxes and sags too quickly, making it impossible to form a uniform wall thickness.
Neden Analizi
The melt strength of PBT is low (especially for unreinforced grades), and the parison sags rapidly under its own weight.
Çözüm
Reduce the processing temperature to increase melt strength; use a high-viscosity PBT grade; increase the parison wall thickness.
Temel Çıkarım
PBT '2079851475616104457 melt strength is a process difficulty.
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