Injection Molding
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EMA surface orange peel
Fenómeno del problema
Orange-peel-like uneven texture on EMA product surface with rough hand feel
Análisis de la causa
Mold temperature too low <30°C; product surface cools and solidifies quickly, then interior continues to shrink causing surface unevenness; injection speed too low
Solución
1) Increase mold temperature to 40-50°C to delay surface solidification; 2) Appropriately increase injection speed; 3) Increase holding pressure to reduce internal shrinkage
Conclusión clave
Orange peel is caused by rapid cooling and solidification; increasing mold temperature and holding pressure are key
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