An injection mold is effectively a heat exchanger. Molten polymer material that is injected must be cooled by the mold cooling system. As part designs become more complex, cavitation requirements increase, and larger overall mold bases are needed. Mold designers have several options when designing effective heat removal systems. In this lesson we focus on different types of coolant line layouts, specifically parallel and serial coolant circuits.
Topics included in this lesson are: the difference between parallel and serial coolant circuits; how different coolant circuits affect coolant pressures, Reynolds numbers, and coolant temperatures; and the importance of evaluating a plant’s coolant supply to determine whether they can deliver appropriate coolant flow for a tool.