Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
권호 표지
DOI QR코드

DOI QR Code

Numerical Simulation of Die Characteristics for Different Dies in Film Casting Extrusion Processes

  • Kim, Ju Hyun (Department of Mechanical Design Engineering, Andong National University) ;
  • Kim, See Jo (Department of Mechanical Design Engineering, Andong National University)
  • Received : 2020.11.15
  • Accepted : 2020.11.30
  • Published : 2020.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, three different die geometries were selected to understand the die characteristics in the film casting extrusion processes. First, large and small-scale T-dies were numerically simulated to observe the scaled-down effect on the flow inside the dies. Second, three different dies-keyhole, linear tapper coat-hanger die (LTCD), and curved tapper coat-hanger die (CTCD)-were numerically observed and discussed according to the mass flow rate. Finally, the die exit velocity profiles and die characteristics were observed and discussed based on the power-law index for the LTCD die. These numerical simulations and numerical data will aid the optimization of the die design in industrial fields.

Keywords

References

  1. H. J. Kwon, "Experimental and numerical study on the tire tread swelling in the single-screw extrusion process", Master thesis, Andong National (2014).
  2. S. J. Kim and T. H. Kwon, "A simple approach to determining three-dimensional screw characteristics in the metering zone of extrusion processes using a total shape factor", Polym. Eng. Sci., 35, 274 (1995). https://doi.org/10.1002/pen.760350308
  3. J. H. Mun, J. H. Kim, S. H. Mun, and S. J. Kim, "Modeling and numerical simulation of multiflux die in the multilayer co-extrusion procces", Korea-Australia Rheology J., 29, 51 (2017). https://doi.org/10.1007/s13367-017-0006-2
  4. A. W. Birley, B. Haworth, and J. Batchelor, "Single-Screw Extrusion The Extruder characteristics", Properties and Materials Engineering, Chapter 4, 1992.
  5. Walter Michaeli, "Extrusion Dies for Plastics and Rubber", Hanser, NY (1992).
  6. G. L. Jin, W.-G. Ahn, S. J. Kim, J. Nam, H. W. Jung, and J. C. Hyun, "Effect of shim configuration on internal die flows for non-Newtonian coating liquids in slot coating process", Korea-Australia Rheology Journal, 28, 159 (2016). https://doi.org/10.1007/s13367-016-0015-6
  7. POLYFLOW User Guide.
  8. Manish Kumar, N. Shanmuga Priya, S. Kanagaraj, and G. Pugazhenthi, "Melt rheological behavior of PMMA nanocomposites reinforced with modified nanoclay", Journal of Nanocomposites, 2, 109 (2016). https://doi.org/10.1080/20550324.2016.1221876