Injection molding is a manufacturing process involving the injection of material into a mold for production of the final product. This book offers information regarding injection molding provided by veteran academic experts in this field from across the world. An introductory account on polymer PVT measurements and two important application areas of polymer PVT data in injection molding have been covered: Optimization for injection molding process and Powder Injection Molding, which further consists of Ceramic Injection Molding and Metal Injection Molding. Some special techniques and applications in injection molding have also been elucidated in this book. Vivid presentation of injection molding process and equipment has been provided in this book in order to direct interested readers to understand plastics manufacturing in resolving problems and errors. The aim of this book is to provide the readers with useful information about the injection molding operation and acquaint them with working knowledge on this topic.