Material Drying 4 조회수

Shot weight fluctuation makes product dimensions and weight uneven

문제 현상

원인 분석

Screw stroke set improperly, metering deviation Screw check ring worn, material leakage, inaccurate metering Screw pullback distance unstable Melt density change in the barrel (PA moisture absorption affects density) V-P switchover position inaccurate

해결 방법

Precisely set the screw stroke to ensure stable metering Replace the worn check ring Stabilize the screw pullback distance Cellulose acetate butyrate density 1.15-1.22g/cm³, stable melt needed Optimize the V-P switchover position

핵심 요약

Metering requires an intact check ring and stable stroke

meteringcheck ringscrew strokeV-P switchover

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Shot weight fluctuation makes product dimensions and weight uneven

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