Welcome Guest!

Select Level

Lesson 3a: Optimizing Cold Runner Sizes, Part 1

Designing effective cold runner systems is as important as designing a molded part. After determining the gate location for a new part designs, the next step is optimizing cold runner sizes. Cold runner size will influence overall part quality, molding cycle time, and overall profits.

Topics covered in the first part of this lesson include: factors to consider in cold runner designs, how to optimize cycle time using different gate runner designs, how different gate designs and sizes influence injection pressures, cooling behavior, and clamp tonnages, and how reducing runner volume can save money.

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

Mold Design Optimizing Cold Runner Sizes Play Screen

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: Cold Runners (Level 1): 

  • Learn the basics of mold design and how various design elements impact a molded part
  • Learn how to optimize different runner systems to achieve high quality molded parts
  • Analyze real-life simulations and learn to determine optimal outcomes

Section Description: 

Cold runner systems are an important aspect of mold design. By optimizing cold runner shapes and sizes, important molding processes such as pressure drops, polymer shearing, packing and cooling behavior, gate sealing time, and overall cycle time can be made more efficient as well.

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.