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An unsteady multifluid flow model: Application to sandwich injection molding process
Author(s) -
Schlatter G.,
Agassant J. F.,
Vincent M.,
Davidoff A.
Publication year - 1999
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.11398
Subject(s) - materials science , displacement (psychology) , flow (mathematics) , molding (decorative) , polymer , lubrication , mechanics , process (computing) , core (optical fiber) , composite material , mold , interface (matter) , computer science , psychology , physics , psychotherapist , operating system , capillary number , capillary action
The sandwich molding process consists of injecting sequentially a skin and core polymers. The thermomechanical model describing the flow of the two polymers into the mold cavity is based on the lubrication approximations. A transport equation characterizes the displacement of the interface between the two fluids. An experimental study has been performed in order to test the influence of processing parameters (viscosities, flow rates, etc.) on the interface location. Numerical simulations are in agreement with measurements.