The standard work presented here was written by expert authors with proven practical experience. This fulfills the book's goal of providing the reader with a connection between theoretical process modeling and practical equipment description. The first part of the technical book deals with fundamental process engineering relationships and aims to help the reader solve practical problems. The single and twin-screw extruder, possible drive concepts, and control systems are discussed. The second part of the book addresses the specific characteristics of the processes. Here, pipe extrusion, profile extrusion, flat film and sheet extrusion, cast film extrusion, and blow film extrusion are discussed. The modeling of cooling processes in extrusion systems is also addressed. The rheological tool design is presented in detail.