Blow Molding
4 조회수
Insufficient Melt Strength of PBT '2079851475616104457 Parison
문제 현상
In PBT extrusion '2079851475616104457, the parison relaxes and sags too quickly, making it impossible to form a uniform wall thickness.
원인 분석
The melt strength of PBT is low (especially for unreinforced grades), and the parison sags rapidly under its own weight.
해결 방법
Reduce the processing temperature to increase melt strength; use a high-viscosity PBT grade; increase the parison wall thickness.
핵심 요약
PBT '2079851475616104457 melt strength is a process difficulty.
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