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Lesson 4: Edge Gates: Standard, Lapped, and Chisel

Gate placement is an important aspect of mold design in order to achieve optimal part quality. In this lesson we will focus on edge gates, specifically standard, lapped, and chisel styles.

This lesson covers three different types of edge gate systems, including standard, lapped and chisel edge gates. The advantage and disadvantage of each system are discussed as well as how they impact injection pressures, shear rates, pack pressures, and clamp tonnages.


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Mold Design Edge Gates 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: Gates (Level 1): 

  • Learn the basics of mold design and how various design elements impact a molded part
  • Gain an understanding of various gate styles and how they influence the molding process
  • Analyze real-life simulations and learn to determine optimal outcomes

Section Description: 
Gate design and placement are key factors in mold design. Types of gates, placement, and size significantly affect the outcome of molded part so should be understood for maximum benefit. Placement options for gates are often limited by design restrictions and other part-related constraints, understanding and utilizing industry best practices are useful in achieving optimal results.

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.