The primary focus of the book is to analyze defects on the finished extruded plastic product. Consequently, the emphasis throughout the book is how various stages involved in the production of the finished Product influences its properties. For example, which manufacturing process will be preferable for a given plastic? Having decided on the manufacturing process, which type of process will give optimum product properties? What is the best type of processing technique to reduce defects? How do processing conditions affect the properties of the part produced and which plastic material is most suitable for a particular application? The book addresses the elements that must be considered to come up with appropriate answers to these types of questions. The distinguishing features of the book are intended to address certain problems associated with plastic extrusion defects. This work is a practical guide, bringing together both defect and materials-processing considerations. It can be used as a reference for operators, engineers, and managers, or in educational courses.