For the first time, both the art and science of designing runners and gates are presented in a concise format that highlights all critical issues. This book will help determine the optimum design, when to use what type of runner systems, and how to isolate molding problems generated from the gate and runner vs. other molding issues. Full color 3-D graphics, illustrations and photographs as well as charts, checklists, and troubleshooting guides complete this handbook.
Chapter 1 : Overview of Runners, Gates, and Gate Positioning
Chapter 2 : Rheology of Plastics
Chapter 3 : Filling and Packing Effects on Material and Molded Part
Chapter 4 : Gate Positioning and Molding Strategies
Chapter 5 : The Melt Delivery System
Chapter 6 : Filling and Melt Imbalances Developed in Multi-Cavity Molds
Chapter 7 : Managing Shear-Induced Melt Variations for Successful Molding
Chapter 8 : Cold Runner Molds
Chapter 9 : Hot Runner Molds
Chapter 10 : Hot Runner Flow Channel Design
Chapter 11 : Hot Runner Drops, Nozzles, and Gates
Chapter 12 : Thermal Issues of Hot Runner Systems
Chapter 13 : The Mechanics and Operation of Hot Runners
Chapter 14 : Process of Designing and Selecting a Runner System (Gate and Runner) : A Summary
Chapter 15 : Troubleshooting
