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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.
The first lesson in the Cold Runners section includes how cold runner shapes affect material flow, the impact of cold runner shapes and sizes on injection pressures, filling velocity, shear rates, and temperatures.
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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):
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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