Injection Molding
4 조회수
Jetting marks/snake patterns on products
문제 현상
Twisted snake-like patterns appear on the product surface, extending from the gate
원인 분석
Gate size is too small, causing a melt jetting effect; the melt jets when entering the cavity instead of advancing smoothly; injection speed is set improperly
해결 방법
Enlarge gate size to eliminate jetting; change to a fan gate or side gate; adjust injection speed to achieve advancing filling (slow first, then fast)
핵심 요약
Jetting marks are a sign of improper filling flow pattern
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