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Lesson 1: Cooling System Overview

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.

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Cooling System Overview

Learn the basics of mold design and how various design elements impact a molded part. Build your own Circle of Knowledge lesson by lesson. 

Goals of Mold Design: Cooling (Level 1): 

  • Learn why the cooling phase of a molding cycle is the logical phase to optimize
  • Gain an understanding of the various type of cooling options to remove heat from a mold
  • Analyze real-life simulations and learn to determine optimal outcomes

Section Description: 

Injection molding is a process of heat exchange – the heat that goes into a mold must also be removed. Understanding the thermal behavior of polymers and the pathway of heat inside a mold is important for designing and processing a successful molding project.

Explanations, simulations, cause and effect analyses, and the uses of various design features are covered in this section. Understanding these design features is important because they influence the moldability, function, appearance, and quality of a part.

Recommended For: Entry Level Personnel, All Personnel

Length: Lessons are approximately 15-20 minutes long each

The Kruse Training platform delivers knowledge and expertise developed over two decades in the plastic injection molding industry. Now companies and individuals can access a state-of-the-art online training program, suited for all levels of knowledge.