Injection Molding
11 조회수
PLA Injection Mold Design
문제 현상
PLA products have special shrinkage behavior in the mold, and dimensions are out of tolerance when designed per general plastics
원인 분석
PLA shrinkage rate is about 0.3-0.6%, relatively low, but the crystallization degree affects the actual shrinkage; the mold allowance is per grade data; fast cooling causes low crystallization, slow cooling causes high crystallization and large shrinkage
해결 방법
①Mold allowance per grade shrinkage data; ②Crystallization strategy linked with shrinkage calculation; ③Correct after mold trial; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
핵심 요약
PLA mold allowance must be linked with the crystallization strategy; corrected per crystallinity on the 0.3-0.6% baseline; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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