Draw Resonance in Film Casting of Viscoelastic Fluids
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{'SignBlockName': 'Jorn Larsen-Basse', 'PO_EMAI': None, 'PO_PHON': None}
This work involves both theoretical and experimental studies of certain         phenomena in film casting.  A procedure for manufacturing polymer films         involves extrusion of polymer melt through a narrow channel called a            slit die and then take-up by a cylinder called a chill roll (which              quenches and solidifies it).  Take-up velocity at the chill roll is             faster than extrusion velocity and the molten film is thus stretched.           Ideally, the final film produced is of uniform thickness, but often             some flow instability occurs and the product instead has periodic               sustained oscillations in film thickness, even though the extrusion             velocity and the take-up velocity are kept constant.
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[{'Code': '1403', 'Text': 'Proc Sys, Reac Eng & Mol Therm'}, {'Code': '1446', 'Text': 'MATERIALS'}]
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