Injection Molding
6 조회수
PET mold temperature 70-80℃
문제 현상
PET engineering injection molded parts warp and deform, or their heat resistance fails to meet the standard due to insufficient crystallization
원인 분석
PET injection mold temperature affects the crystallinity: low mold temperature leads to insufficient crystallization, poor product heat resistance, and post-crystallization deformation; an injection mold temperature of 70-80℃ combined with a cooling mold temperature of 40-50℃ can balance crystallization and cycle
해결 방법
①Mold temperature 70-80℃ in the injection stage; ②mold temperature 40-50℃ in the cooling stage; ③for products with high heat resistance requirements, ensure sufficient crystallinity; after adjustment, take consecutive samples to verify the effect, and resume mass production only after confirming stability
핵심 요약
PET mold temperature is managed in stages; high temperature in injection ensures crystallization and low temperature in cooling ensures the cycle, and the two-stage combination is the standard practice for engineering parts; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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