Injection Molding
5 görüntüleme
PETG injection molded product obvious weld lines
Sorun Belirtisi
Obvious weld line marks or grooves appear at the melt convergence of PETG products, affecting appearance and strength.
Neden Analizi
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.
Çözüm
Increase melt temperature and mold temperature; improve venting; optimize gate position; increase injection speed.
Temel Çıkarım
PETG weld line improvement requires the guarantee of heat and venting.
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