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Lesson 5: Baffle and Bubbler Circuits

There are various ways to design mold cooling circuits. One common method is to drill straight lines into a core and cavity plates, but complex part designs require more innovative solutions. In this lesson we will learn how to integrate baffles and bubblers into cooling circuit designs.

This lesson contains: the general function and use of baffle and bubbler circuits; how to evaluate coolant flow behavior and resulting mold temperature distribution for a part with a baffle and bubbler coolant circuit design; and how to compare single and serial bubbler circuit designs.

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Baffles and Bubbler Circuits

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.