Welcome Guest!

Select Level

Lesson 3: Wall Thickness and Packing Pressure

Designing a high-quality injection molded part requires a coordinated effort between mold designers, part designer, and process engineers. The first step is to optimize the part design for molding. Wall thickness and packing pressure are the focus of this lesson.

Nominal wall thickness of a part is an important part design criterion for achieving uniform process behavior, from filling to packing to cooling. Wall thickness, polymer materials, and process are all inter-connected and each aspect should be understood to achieve the highest part quality possible.

This lesson reviews how to evaluate the polymer material used for simulations, the impact of different wall thickness on filling and packing a part, and how clamp tonnages and volumetric shrinkages are affected by wall thicknesses.

You are not signed up for this course. Subscribe here!

Wall Thickness and Packing Pressure

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.