Optimizing Cold Runner Sizes, Part 2: Mold Design

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Lesson 3: Optimizing Cold Runner Sizes, Part 2

Designing cold runner systems is as important as designing and optimizing a molded part. After choosing the proper gate location on 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.

The second part of this lesson covers optimizing cold runner systems, how different systems influence injection pressures, cooling behavior, and clamp tonnages, and how runner and overall shot volume are related to material usage and cost.

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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 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
Gain an understanding of cold runners and how they influence the molding process
Analyze real-life simulations and learn to determine optimal outcomes

Section Description:
Cold runner systems are an essential 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 also be made more efficient.

This section covers explanations, simulations, cause-and-effect analyses, and the uses of various design features. Understanding these design features is important because they influence a part’s moldability, function, appearance, and quality.

Recommendation: Entry-Level Operators, Technicians, & Designers

Length: Lessons are approximately 15-20 minutes long each

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