Injection molding is a process of heat exchange – the heat that goes into a mold must also be removed. The coolant medium is the most critical element in this process. In this lesson we will discuss various cooling systems and then look at how the coolant from these systems is used within a mold to regulate temperature.
This lesson provides a cooling system overview. In this lesson you will learn about the different types of molding plant cooling equipment; follow the pathway of heat from the injected polymer through the cavity and mold, to the coolant circuit and then into the coolant itself; learn about coolant supply lines, distribution manifold designs and circuits, and coolant fluid characteristics; and evaluate coolant flow and distribution inside a mold from the temperature controller though the water distribution manifold and into the individual mold coolant circuits.