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المشاكل والحلول

إجابات عملية على التحديات الشائعة في مواد البلاستيك

1506 سؤال
Q
EVOH '2079851475616104452 demolding difficulty
A
Q
EVA surface periodic corrugations
A
Corrugations are caused by unstable injection; equipment overhaul and PID control are key
Injection Molding EVA surface corrugation injection stability equipment overhaul PID control
Q
EVA surface tiger-skin pattern
A
Tiger-skin pattern is caused by unstable injection front; multi-stage injection and high mold temperature are key
Injection Molding EVA tiger-skin pattern injection speed multi-stage injection mold temperature control
Q
EVA surface color difference is obvious
A
Color difference is caused by uneven dispersion and orientation; masterbatch method and stable processing are key
Injection Molding EVA color difference color masterbatch dispersion pigment orientation temperature stability
Q
EVA surface orange peel texture
A
Orange peel texture is caused by rapid cooling and solidification; increasing mold temperature and holding pressure are key
Injection Molding EVA orange peel texture mold temperature holding pressure surface solidification
Q
EVA internal stress concentration is severe
A
Internal stress is caused by fast injection and uneven cooling; reducing speed, uniform cooling, and annealing are key
Injection Molding EVA internal stress orientation stress annealing treatment uniform cooling
Q
Cold slug marks in EVA '2079851475616104452
A
Cold slug marks are caused by solidified residual material in nozzle; raising nozzle temperature and cold slug well design are key
Injection Molding EVA injection cold slug marks nozzle temperature cold slug well injection pressure
Q
Flow marks in EVA '2079851475616104452
Q
Sink marks in EVA '2079851475616104452
Q
Unbalanced multi-cavity filling in EVA '2079851475616104452
A
Unbalanced multi-cavity filling is caused by runner design; balanced runner and mold flow analysis are key
Injection Molding EVA injection multi-cavity balance runner design gate size mold flow analysis
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