Injection Molding
4 조회수
PETG injection molded product obvious weld lines
문제 현상
Obvious weld line marks or grooves appear at the melt convergence of PETG products, affecting appearance and strength.
원인 분석
When the two melt fronts converge, the temperature is low and fusion is poor; insufficient venting and gas hinder welding; molecular chain orientation is unfavorable for bonding.
해결 방법
Increase melt temperature and mold temperature; improve venting; optimize gate position; increase injection speed.
핵심 요약
PETG weld line improvement requires the guarantee of heat and venting.
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