Troubleshooting extrusion problems is one of the most challenging tasks for everyone involved in extrusion operations. It requires a good understanding of the extrusion process, knowledge of the material properties, good instrumentation, good analysis tools, and a systematic and logical approach. This book addresses all issues crucial in extrusion troubleshooting. In addition, industrial case studies, richly illustrated with photographs and photomicrographs, are used to provide exemplary approaches to efficient problem analysis and problem solving. Contents - Requirements for Efficient Troubleshooting - Tools for Troubleshooting - Systematic Troubleshooting - Case Studies: Film Coextrusion - Degradation in the Middle Layer - Film Coextrusion with Interfacial Problems - Lines in E