This common type of mold structure with three plates, or large molds need more long nozzle, or for many long molding mold. Plastic funnel system usually trapezoid or trapezium correction in the horizontal cross-section to ease work and insert latch pull nozzle when opening mold. The advantage of this type is able to arrange many nozzle into the mold for molding large heart, help to fill quickly and better. However, that can cause overheating for structured materials long fibre and inferior-viscosity
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