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Lesson 4: Switch-Over from Filling to Packing

In this lesson you will learn to evaluate the switch-over point from filling to packing. The switch-over point from a flow-control to pressure-control is one of the most important set points in the molding process.

This lesson covers how timing the switch-over point setting from fill to pack impacts a part and determining the optimal switch-over point by evaluating injection pressure, clamp tonnage, and flow rate graphs.

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Begin with the basics! Learn what happens inside a mold during the injection molding process. Build your  Circle of Knowledge lesson by lesson. 

Goals of Molding Fundamentals: Inside the Mold (Level 1): 

  • Learn the fundamentals of what goes on inside a mold during the injection molding process
  • Get a basic understanding of how a molding machine functions and its various components
  • Analyze real-life molded parts and learn the cause-and-effect behaviors of design and process

Section Description: 
Understanding what happens inside a mold during the injection molding process is key to a successful career in the plastics industry. From part designers to mold designers to process engineers, having a good grasp of these molding fundamentals is essential to designing and producing high-quality parts.

This section covers explanations, simulations, cause-and-effect analyses, and the introduction of various injection molding concepts. It evaluates and analyzes the relationship between multiple factors inside the mold during injection molding. Fundamental training is essential to understand the complex parts and mold designs commonplace in the injection molding industry.

Recommendation: Entry-Level Operators & Technicians

Length: Lessons are approximately 15-20 minutes long each

The Kruse Training platform delivers knowledge and expertise developed over three decades in plastic injection molding. Now, companies and individuals can access a state-of-the-art online training program suited for all levels of expertise.