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Numerical simulation of polyester coextrusion: Influence of the thermal parameters and the die geometry on interfacial instabilities

Abstract : The polymer coextrusion process is a new method of sheet metal lining. It allows to substitute lacquers for steel protection in food packaging industry. The coextrusion process may exhibit flow instabilities at the interface between the two polymer layers. The objective of this study is to check the influence of processing and rheology parameters on the instabilities. Finite elements numerical simulations of the coextrusion allow to investigate various stable and instable flow configurations.
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Omar Mahdaoui, Jean-François Agassant, Patrice Laure, Rudy Valette, Luisa Silva. Numerical simulation of polyester coextrusion: Influence of the thermal parameters and the die geometry on interfacial instabilities. 10th ESAFORM Conference Material Forming, Apr 2007, Zaragoza, Spain. pp.Pages 873-878 - ISBN 0735404143, ⟨10.1063/1.2729623⟩. ⟨hal-00521598⟩

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