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Lesson 4: Polymer Flow During Packing

Understanding the impact of packing pressures on polymer flow is an important aspect of successful processing. Our goal in this lesson is to evaluate the predominant polymer flow during packing. We will take a detailed look at the areas of continuous polymer flow, specifically during packing and cooling.

Topics in this lesson include: modify filling-to-packing switch-over points and packing profiles, how to understand the predominant polymer packing flow path by evaluating tracer results, melt core, packing pressure and clamp tonnages, and volumetric shrinkage development.

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Polymer Flow During Packing

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: Packing and Cooling Phase (Level 1): 

  • Learn the fundamentals of process optimization by analyzing the packing and cooling 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 packing and cool 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.