Processing Machinery
3 조회수
ESCR stress cracking of PP products
문제 현상
PP containers in contact with detergents or oils develop cracks during use.
원인 분석
Although PP's stress cracking resistance is better than PE's, products with high internal stress still crack when contacting specific media; improper grade selection carries higher risk.; during on-site investigation, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience
해결 방법
①Reduce the internal stress of the product; ②select a stress-cracking-resistant grade; ③perform media compatibility verification; ④avoid sharp corner design.; after adjustment, continuously sample and verify the effect, and resume mass production after confirming stability
핵심 요약
Products in contact with media must undergo ESCR verification; both a low-stress process and correct material selection are important.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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