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A general non‐isothermal model for one‐dimensional multilayer coextrusion flows
Author(s) -
Puissant S.,
Vergnes B.,
Demay Y.,
Agassant J. F.
Publication year - 1992
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760320308
Subject(s) - materials science , isothermal process , computation , mechanics , flow (mathematics) , thermal , die (integrated circuit) , constant (computer programming) , rheology , volumetric flow rate , composite material , isothermal flow , thermodynamics , physics , computer science , nanotechnology , open channel flow , algorithm , programming language
Abstract A general computation of multilayer coextrusion flow in a flat die geometry is presented. For any given number of layers of different polymers, characterized by their thermal and rheological behaviors, the model permits computation of velocity and temperature fields along the flow in constant or slightly varying geometries. The influence of different operating parameters (wall regulation temperature, flow rate, initial temperatures) on the interface positions and temperature evolutions is evaluated. Theoretical predictions of interface positions are in agreement with experiments carried out on an industrial multimanifold flat die.