Processing Machinery
4 조회수
Insufficient LDPE Film ESCR
문제 현상
Packaging film in contact with contents such as detergents shows environmental stress cracking.
원인 분석
The material's environmental stress crack resistance (ESCR) grade is insufficient; internal stress and the medium act together to induce cracks.; During on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience.
해결 방법
①Select a high-ESCR grade; ②Reduce processing internal stress; ③Conduct medium compatibility verification; ④Evaluate blend modification.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability.
핵심 요약
ESCR is a mandatory test item for medium-contact packaging; advancing material selection verification can avoid batch failure.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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