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Journal of Plastics Technology 2020/03

Novel die designs for blown film extrusion involving additive manufacturing

Novel die designs for blown film extrusion involving additive manufacturing

For years, proven concepts such as spiral mandrel dies for blown film extrusion, have been used in extrusion die design. In the case of complex variants, the design also depends on the manufacturability. However, with today's possibilities of additive manufacturing technology, there is potential to optimize this design of the melt-carrying flow channels from a thermo-rheologically point of view. Structures and flow channels that cannot be manufactured conventionally can have a positive influence on the flow behavior. In this paper, a demonstrator tool is presented, which was designed on the basis of numerical flow simulations and manufactured mostly additively. The focus of the design was primarily an improved temperature balance through radial mixing elements.

Bastian Neubrech, M.Sc.1 , Prof. Dr.-Ing. Johannes Wortberg1 , Prof. Dr.-Ing Reinhard Schiffers1 , Dr.-Ing. Stefan Kleszczynski2 , Prof. Dr.-Ing Gerd Witt2
1 Lehrstuhl für Konstruktion und Kunststoffmaschinen (KKM), Universität Duisburg-Essen, Institut für Produkt Engineering (IPE)
2 Lehrstuhl für Fertigungstechnik (FT), Universität Duisburg-Essen, Institut für Produkt Engineering (IPE)

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The Journal of Plastics Technology is a peer reviewed internet periodical published under the auspices of the Scientific Alliance of Polymer Technology (WAK)


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International Polymer Processing

International Polymer Processing, the journal of the Polymer Processing Society, is a discussion forum for the world-wide community of engineers and scientists in the field of polymer processing.

The journal covers research and industrial application in the very specific areas of designing polymer products, processes, processing machinery and equipment.


International Polymer Processing


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The Journal of Plastics Technology is indexed in SCOPUS, the largest abstract and citation database of peer-reviewed literature.