Injection Molding
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TPE Overmolding Two-Shot '2079851475616104452
Fenómeno do problema
TPE overmolding uses two-shot injection; poor fixation of hard plastic parts causes displacement and flash
Análise das causas
The two-shot injection process fixes the hard plastic part on the overmolding mold; poor fixation causes hard plastic displacement; TPE injection pressure deforms the hard plastic; mold positioning accuracy is the key
Solução
①Precisely fix the hard plastic part with mold positioning; ②Control injection pressure to prevent deformation; ③Overmolding mold design considers hard plastic tolerances; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Conclusão principal
The accuracy of TPE two-shot injection lies in positioning; hard plastic fixation and pressure control are double insurance against displacement; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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