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Lesson 3a: Temperature Behavior, Part 1

Understanding polymer temperature behavior inside a mold during the filling phase is an important aspect of successful molding. In the different parts of this lesson we will cover the effect of temperature distribution on packing, cooling, and shrinkage behavior using different polymer materials.

Topics in this lesson include: how polymer material characterizations influence temperature in a cavity during the filling phase, a review of specific heat capacity, thermal conductivity, no-flow temperature, and PVT, how variable wall thicknesses affect flow-front temperatures and cavity filling temperatures, and how to analyze a part cross-section with sensor data to evaluate wall thickness and filling temperatures.

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Temperature Behavior Play Screen

Learn the fundamentals of process optimization by understanding how different phases in the injection molding cycle will influence the overall part quality. Build your own Circle of Knowledge lesson by lesson. 

Goals of Processing: Filling Phase (Level 1): 

  • Learn the fundamentals of process optimizing by analyzing the filling phase of molding a part
  • Gain an understanding of how part design, mold design, and process are connected and interdependent
  • Analyze real-life molded parts and learn the cause and effect behaviors of design and process

Section Description: 

Molding high-quality parts is dependent on many factors, including skillful part and mold design, an understanding of polymer material behavior, and an optimized process. It is important for injection molding processing engineers to follow key steps to ensure consistently high-quality molded parts.

Explanations, simulations, cause and effect analyses, and various filling phase variables are covered in this section.

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.