Molds & Tooling
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PETG multi-cavity mold flow imbalance
Fenómeno del problema
The cavities of a multi-cavity mold fill inconsistently, with some short shots and some overflow.
Análisis de la causa
The runner lengths or cross-sections of the cavities differ, causing flow resistance differences, and uneven mold temperature aggravates the imbalance.
Solución
Redesign the runners to achieve natural balance; optimize runners by mold flow analysis; balance the mold temperature.
Conclusión clave
PETG multi-cavity balance requires scientific runner design.
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