Gas assisted injection molding has increasingly become an important process in industry due to its flexibility in design and manufacturing in plastic parts. This is the first book devoted solely to gas-assisted injection molding. The book discusses polymeric materials and properties, the machinery, the theory and practice of the process, different molds, molding faults, control systems for the process, and application of computer aided engineering. The text is well-organized so technical people can find what they need and is easy to understand so non-technical people can grasp what they need to know.