Injection Molding
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PA12 High-speed Injection and Glass Fiber Surface
Problembeschreibung
【Problem phenomenon】Glass fiber reinforced PA12 products had floating fibers and rough surfaces, and the appearance was not up to standard
Ursachenanalyse
High-speed injection can improve the surface quality of glass fiber filled PA12: rapid filling makes the fibers embed below the surface layer with the melt; at low speed, fibers easily concentrate on the surface and form floating fibers
Lösung
Use high-speed injection for glass fiber grades to improve the surface; cooperate with a high mold temperature of 90-100℃ to improve fiber coating; design the gate to avoid fiber orientation concentration and exposure; after adjustment, take consecutive samples to verify the effect, and resume mass production only after confirming stability
Wichtigste Erkenntnis
Glass fiber PA12 requires high-speed injection to press down floating fibers, with high mold temperature assisting coating; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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