Processing Machinery 4 조회수

EVA material changeover residue

문제 현상

After EVA material changeover, the first 5-10 products contain residue of the previous material with color difference and performance deviation

원인 분석

Large amount of previous material residue in the barrel and screw; incomplete purging with residue in dead zones; insufficient purging compound amount

해결 방법

1) Increase purging compound amount to 2-3 times the barrel capacity; 2) Increase rotation speed and temperature during purging to accelerate removal; 3) Disassemble the screw to thoroughly clean dead zones

핵심 요약

Changeover residue is caused by incomplete purging; thorough purging and disassembly are key

EVA changeover residue purging compound screw disassembly dead zone cleaning

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EVA material changeover residue

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