Injection Molding
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TPE Overmolding Thickness Design
Problembeschreibung
TPE overmolding layer too thin gives low bonding strength, too thick causes shrinkage and bubbles, with poor feel
Ursachenanalyse
TPE overmolding layer thickness of 1.5-3.0mm gives the best bonding effect; too thin makes injection difficult with low bonding strength and poor feel; too thick is costly and prone to shrinkage and bubbles
Lösung
①Design the overmolding layer thickness at 1.5-3.0mm; ②Uniform wall thickness; ③Gradual thick-to-thin transitions; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Wichtigste Erkenntnis
TPE overmolding thickness has a clear window; 1.5-3.0mm is the best balance of bonding, feel, and cost; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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