Melt temperature variations in the barrels of an injection moulder and a twin screw extruder |
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| Authors: | N. Sombatsompop W. Chaiwattanpipat M. Panapoy |
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| Affiliation: | (1) Division of Materials Technology, School of Energy and Materials, King Mongkut’s University of Technology Thonburi (KMUTT), Bangmod, 10140, Bangkok, Thailand e-mail: inarmpop@cc.kmutt.ac.th Fax: 662-4279062, TH |
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| Abstract: | This article investigated temperature variations of a polypropylene melt in the barrels of an injection moulding and a twin screw extruder under an isothermal state. The melt temperature profiles in the barrel of an injection moulding machine were observed to be different from those a twin screw extruder, this being associated with differences in the flows occurring in the barrels of each processing equipment. The major parameters influencing the melt temperature profiles were shear heating and heating conduction effects, residence time, flow length and the flow patterns of the flowing PP melt in the barrel. Received: 4 January 2000 / Reviewed and accepted: 15 February 2000 |
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| Keywords: | Melt temperature Polymer melts Injection moulding Twin screw extruder Shear heating effect Heat conduction Flow patterns Polymer rheology Residence time Polymeric materials |
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