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Design of an extrusion die with a variable choker bar
Author(s) -
Wu PingYao,
Liu TaJo,
Chang HsuMing
Publication year - 1994
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1994.070510605
Subject(s) - extrusion , die (integrated circuit) , bar (unit) , lubrication , flow (mathematics) , material flow , variable (mathematics) , materials science , production (economics) , mechanical engineering , engineering drawing , composite material , mechanics , mathematics , engineering , physics , mathematical analysis , ecology , meteorology , biology , macroeconomics , economics
A novel approach is proposed to adjust flow nonuniformities caused by production variations from an extrusion die. A mathematical model that is based on the lubrication approximation was developed, and the effect of four types of production variations was examined separately. To each production variation, a specially designed choker bar was constructed and inserted into the extrusion die to correct flow nonuniformities. © 1994 John Wiley & Sons, Inc.