Premium
Numerical analysis of polymer melt flow in the nipping region
Author(s) -
Takase M.,
Katsumoto R.,
Kegasawa T.,
Kihara S.,
Funatsu K.
Publication year - 2002
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.10995
Subject(s) - extrusion , materials science , rheology , shear thinning , composite material , polymer , coating , flow (mathematics) , extrusion moulding , melt flow index , die (integrated circuit) , computer simulation , thinning , mechanics , copolymer , nanotechnology , ecology , physics , biology
In the extrusion coating process, it has never been revealed how a polymer melt flows near the nipping region and how the cooling process occurs. We created a numerical simulation program for the polymer melt flow near the nipping region using the finite element method. Numerical results showed the effects of many individual factors (e.g. line speed, melt thickness, extrusion temperature, shear‐thinning property, etc.) on the cooling process and polymer melt flow near the nipping region. It was found that a polymer melt buildup that can be observed between two calender rolls in the sheet forming process also formed in the extrusion coating process, and that the amount of polymer melt buildup (bank) depended upon the coating condition. It was found that not only line speed and melt thickness contribute to the extrusion coating process significantly, but also the rheological property has an effect on the process.