Injection Molding
6 조회수
PBT surface floating fibers
문제 현상
Glass fiber texture visible on the surface of reinforced PBT products, poor gloss.
원인 분석
Low melt temperature or mold temperature causes the surface resin to not fully coat the fibers; slow injection speed and insufficient holding pressure make fibers close to the surface.; when troubleshooting on site, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
해결 방법
①Appropriately increase melt and mold temperature; ②increase injection speed; ③strengthen holding pressure; ④polish the cavity to improve replication.; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
핵심 요약
Floating fibers affect appearance and coating; increasing temperature and speed to improve coating ability is the universal countermeasure.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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