Molds & Tooling
3 조회수
PC Thin-Wall Transparent Part Flow Marks
문제 현상
Thin-wall transparent PC parts show striped flow marks, visible in transmitted light.
원인 분석
Front instability or shear streaks under high-speed filling; shear overheating in the gate area also causes visible marks; thin-wall transparent parts have the highest requirements for flow stability; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience.
해결 방법
①Optimize the injection speed curve; ②Enlarge the gate; ③Appropriately increase the mold temperature to improve the melt's replication and fit to the cavity surface; ④Make the hot runner temperature uniform; ⑤Reduce shear through the gate.
핵심 요약
PC thin-wall transparent parts 'have the highest requirements for flow stability': fine matching of speed and shear is the key; transparent parts amplify even tiny flow fluctuations; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence.
이 정보가 도움이 되었나요?
0 명이 도움이 되었다고 합니다
의견 주셔서 감사합니다!