Viscous dissipation in die flows
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Howard W. Cox; Christopher W. Macosko
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Article
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1974
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American Institute of Chemical Engineers
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English
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## Abstract The flow of polymer melts in cylindrical, annular, and slit dies has been examined. Large temperature rises at the outer surface of the extrudate were measured with an infrared pyrometer. Calculations show that severe radial temperature gradients exist in these flow geometries under con