Injection Molding
11 조회수
Cushion Control in PBT '2079851475616104452
문제 현상
The cushion (melt reserve) at the front end of the barrel is insufficient or unstable.
원인 분석
The metering stroke is set improperly; the non-return ring is worn and leaks; the back pressure is insufficient and the melt density is low.
해결 방법
Ensure the cushion amount is 3-6mm; check and replace the non-return ring; appropriately increase the back pressure.
핵심 요약
The PBT cushion is the reserve of holding pressure.
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