Christian Hopmann – författare

This definitive book provides a comprehensive account of the full range of dies used for extrusion of plastics and elastomers. The distinctive features of the various types of dies are described in detail. Expert advice on the configuration of dies is given, and the possibilities of computer-aided design, as well as its limitations, are demonstrated.Fundamentals and computational procedures are clearly explained so that no special prior knowledge of the subject is required. The mechanical configuration, handling, and maintenance of extrusion dies are described. Calibration procedures for pipes and profiles are also discussed.This book was written for plastics engineers who need daily support in their practical work in industry and science, as well as for students preparing for their professional life.The 4th edition is brought up to date with several important additions, including coverage of multilayer (>15 layer) dies, melt encapsulation, and simulation tools (rheological/thermal CFD simulations).With the purchase of this book, you also receive a free personal access code to download the eBook.

This text- and workbook provides a clearly written, comprehensive introduction to the major topics associated with plastics technology, from basic chemistry and processing methods to the problem of waste and the issue of recycling plastics. Guiding questions at the beginning of each lesson help the reader to work through the material in a targeted manner; success checks at the end of each lesson enable the reader to review what he/she has learned. It thus facilitates independent, self-paced learning, meeting the requirements of modern vocational training.

This first comprehensive overview of reactive extrusion technology for over a decade combines the views of contributors from both academia and industry who share their experiences and highlight possible applications and markets. They also provide updated information on the underlying chemical and physical concepts, summarizing recent developments in terms of the material and machinery used.As a result, readers will find here a compilation of potential applications for reactive extrusion to access new and cost-effective polymeric materials, while using existing compounding machines.

Die im Rahmen von EU-Regularien geforderten Rezyklatanteile in Verpackungen stellen Kunststoffverarbeiter aktuell vor Herausforderungen, da sich die Werkstoffeigenschaften von Rezyklaten oftmals von Neuware unterscheiden.Um die Nachhaltigkeit von Kunststoffverpackungen zu verbessern, werden in diesem Bericht interdisziplinäre Forschungsarbeiten vorgestellt, die auf drei Schwerpunkten basieren: Die Untersuchung des erhöhten Rezyklateinsatzes in Verpackungen bei gleichzeitiger Gewährleistung der Recyclingfähigkeit, einem Bewertungsmodell zur Beurteilung der ökologischen Nachhaltigkeit und der Entwicklung eines plattformgestützten Informationssystems für den Austausch relevanter Nachhaltigkeitsdaten. Die Erkenntnisse zu den Einsatzmöglichkeiten von Rezyklaten werden auf ein Demonstratorprodukt übertragen. Das Ergebnis ist eine Mono-PE-Pouch mit Ausgießer mit einem Rezyklatanteil von >60 %.

This book gathers the proceedings of the International Symposium on Plastics Technology, which was held on March 10, 2020 in Aachen, Germany, and was organised by the Institute for Plastics Processing (IKV) in Industry and Craft at RWTH Aachen University.