Molding Process
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PSU Gamma Sterilization Color Change
문제 현상
【Problem Phenomenon】PSU medical parts show color change after gamma sterilization, while the customer requires maintaining transparency after sterilization
원인 분석
Gamma sterilization causes color shift in some materials (PC requires adding purple compensation), PESU maintains transparency under all sterilization methods; PSU's transparency retention is inferior to PESU
해결 방법
Prefer PESU for gamma-sterilized transparent parts; perform post-sterilization color verification for PSU parts; re-evaluate color stability when the sterilization method changes; after adjustment, continuously sample to verify the effect, confirm stability before resuming mass production
핵심 요약
Maintaining transparency under gamma sterilization is PESU's strength, PSU parts must have color verified; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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