Extrusion Dies

“Simulation of the Flow in a Bilayer PVC Window Profile Die with Gradually Changing Calibrator Profiles”, M. Gupta and K. Ryckebosch, Society of Plastics Engineers Annual Technical (ANTEC) Papers, Vol. 68, May 2021.

“Accurate Simulation of the Four Modes of Post-Die Extrudate Shape Distortion”, M. Gupta, International Polymer Processing Journal, January 2021, Vol. 26, 1 – 11.

“Use of Gradually Changing Profile Shape in Extrudate Sizer for Simplification of Extrusion Die Design”, Society of Plastics Engineers Annual Technical (ANTEC) Papers, Vol. 67, March 2020.

“Unified Simulation of Extrudate Distortion Due to Non-uniform Exit Velocity and Cooling Shrinkage”, M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, Vol. 64, May 2018.

“Elastomeric Profile Coextrusion Simulation for Automotive Sealing System”, L. Shi, S. Islam, M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, Vol. 63, 1052 – 1057, May 2017.

“Automatic Optimization of Extrusion Dies”, M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, Vol. 62, 680 – 684, May 2016.

“Virtual Fine-Tuning of a Profile Coextrusion Die Using a Three Dimensional Flow Simulation Software”, K. Ryckebosch and M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, March 2015, Vol. 61, 1108 – 1113.

“Comparison of Mesh Partitioning Technique and Level-Set Method for Coextrusion Simulation”, M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, April 2014, Vol. 60, 1016 – 1023. PDF

“Viscoelastic Simulation of Bi-Layer Coextrusion in a Square Die: An Analysis of Viscous Encapsulation”, M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, April 2013, Vol. 59, 1227 – 1231. PDF

“Effect of Polymer Viscosity on Post-Die Extrudate Shape Change in Coextruded Profiles”, M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, April 2012, Vol. 58. PDF

“Effect of Wall Slip on the Flow in a Flat Die for Sheet Extrusion”, M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, 2011, Vol. 57, 1191 – 1196. PDF

“Observations of Liquid-Liquid Encapsulation in Coextrusion of Inelastic Newtonian Fluids”, J. W. Lee, J. S. Allen and M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 2011, Vol. 57, 1360 – 1366.

“Three Dimensional Simulation of Coextrusion in a Complex Profile Die”, M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 2010, Vol. 56, 2030 – 2036. PDF

“Mesh Partitioning Technique for Three-Dimensional Simulation of Coextrusion”, M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 2008, Vol. 54, 217 – 222. PDF

“A New Non-Conventional Concept for Design of Sheet Extrusion Dies”, M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, 2009, Vol. 55, 1561 – 1565. PDF

“Numerical and Experimental Investigation of Elongational Viscosity effects in a Coat-Hanger Die”, Y. Sun, M. Gupta, J. Dooley, K. A. Koppi, M. A. Spalding, Journal of Plastics Technology, January 2008, Vol. 4, 1 – 14. PDF

“Balancing of a Profile Die for Glass Run Seal of a Car Using Three-Dimensional Flow Simulation”, F. Zacarias, S. Schrader,and M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, 2007, 2403 - 2406. PDF

“Balancing of Profile Dies using Three-Dimensional Flow Simulation”, M. Gupta , F. Zacarias and S. Schrader, Annual Meeting of Polymer Processing Society, July 2006. PDF

“An Analysis of the Effect of Elongational Viscosity in a Spiral Mandrel Die”, Y. Sun and M. Gupta, Advances in Polymer Technology, June 2006, Vol. 25, 90 – 97.

“Experimental and Numerical Investigation of The Elongational Viscosity Effects in a Coat Hanger Die”, Y. Sun and M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, 2005, Vol. 51, 81 - 85. PDF

“Optimization of a Flat Die Including Elongational Viscosity Effects”, Y. Sun and M. Gupta, International Polymer Processing Journal, December 2005, Vol. 20, 380 – 387.

“Optimization of a Flat Die Geometry”, Y. Sun and M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, 2004, Vol. 50, 3307 - 3311. PDF

“Effect of Elongational Viscosity on the Flow in a Spiral Die”, Y. Sun and M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 2004, Vol. 50, 86 - 90. PDF

“Effect of Elongational Viscosity on the Flow in a Flat Die”, Y. Sun and M. Gupta, International Polymer Processing Journal, December 2003, Vol. 18, 356 - 361. PDF

“An Analysis of the Effect of Elongational Viscosity on the Flow in a Flat Die”, Y. Sun and M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 2003, Vol. 49, 290 - 294. PDF

“Effect of Elongational Viscosity on Die Design for Plastic Extrusion”, M. Gupta, Journal of Reinforced Plastics and Composites, November 2001, Vol. 20, 1464 – 1472.

“Further Investigation of the Effect of Elongational Viscosity on Entrance Flow”, D. Sarkar and M. Gupta, Journal of Reinforced Plastics and Composites, 2001, Vol. 20, 1473 - 1484. PDF

“Simulation of Planar Entrance Flow Using Strain-Rate-Dependent Shear and Elongational Viscosities”, M. Gupta, Journal of Reinforced Plastics and Composites, 2001, Vol. 20, 341-355. PDF

“Effect of Elongational Viscosity on Axisymmetric Entrance Flow of Polymers”, M. Gupta, Polymer Engineering & Science, January 2000, Vol. 40, 23-35. PDF

“Effect of Elongational Viscosity on Die Design for Plastic Extrusion”, M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 1999, Vol. 45, 83-87. PDF

“Entrance Flow Simulation using Elongational Properties of Plastics”, M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 1999, Vol. 45, 1254-1259. PDF

Melting in Screw Extruders

“An Investigation of Melting and Metering Sections in a Single Screw Extruder”, A. Altinkaynak, M. Gupta, M. A. Spalding and S. L. Crabtree, Society of Plastics Engineers Annual Technical (ANTEC) Papers, April 2015, Vol. 60.

“Melting in a Single-screw Extruder: Experiments and 3D Finite Element Simulation”, A. Altinkaynak, M. Gupta, M. Spalding, S. Crabtree, International Polymer Processing Journal, April 2011, Vol. 26, 182 – 196.

“Estimation of Temperature Increase in a Partially Filled ZSK-90 Co-rotating Twin-Screw Extruder Using Mesh Partitioning Technique”, M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 2011, Vol. 57, 1217 &ndash 1223.

“An Investigation of the Effect of Screw Geometry on Melting in a Single-Screw Extruder”, A. Altinkaynak, M. Gupta, M. A. Spalding, and S. L. Crabtree, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 2010, Vol. 56, 426 – 433.

“An Experimental Study on Shear Stress Characteristics of Polymers in Plasticating Single-Screw Extruders”, A. Altinkaynak, M. Gupta, M. Spalding, and S. Crabtree, Polymer Engineering and Science, March 2009, Vol. 49, 471 – 477.

“Three-Dimensional Finite Element Simulation of Polymer Melting in a Single-Screw Extruder”, A. Altinkaynak, M. Gupta, M. A. Spalding and S. L. Crabtree, Annual Meeting of Polymer Processing Society, July 2006. PDF

Twin-Screw Extruders

“Simulation of Distributive Mixing in a ZSK-90 Co-rotating Twin-Screw Extruder”, Y. Yi, M. Gupta, V. Rohatgi, and R. Kuehn, Society of Plastics Engineers Annual Technical (ANTEC) Papers, April 2013, Vol. 59, 1174 &ndash 1180.

“Estimation of Temperature Increase in ZSK-90 Co-rotating Twin-Screw Extruder using Mesh Partitioning Technique”, M. Gupta, V. Rohatgi, and R. Kuehn, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 2009, Vol. 55, 2350 – 2355.

“Simulation of Distributive and Dispersive Mixing in a Co-rotating Twin-Screw Extruder”, L.Cong and M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 2008, Vol. 54, 300 – 304. PDF

“Non-isothermal Simulation of the Flow in Co-rotating and Counter-rotating Twin-Screw Extruders using Mesh Partitioning Technique”, M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 2008, Vol. 54, 316 – 320. PDF

“Shear Stress and Melting Flux for Polycarbonate Resins”, A. Altinkaynak, M. Gupta, M. A. Spalding, and S. L. Crabtree, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 2008, Vol. 54, 1405 – 1409.

“An Experimental Sutdy on Shear Stress Characteristics of Polymers in Single-Screw Extruders”, A. Altinkaynak, M. Gupta, M. A. Spalding, and S. L. Crabtree, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 2007, Vol. 53, 395 – 399.

“Numerical Investigation of the Effect of Screw Temperature on the Melting Profile in a Single-Screw Extruder”, A. Altinkaynak, M. Gupta, M. A. Spalding, and S. L. Crabtree, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 2007, Vol. 53, 430 – 434.

“Mixing of Pigmented Polymers in a Co-rotating Twin-Screw Extruder”, L. Cong and M. Gupta, Annual Meeting of Polymer Processing Society, July 2006. PDF

“Investigation of Melting in a Single-Screw Extruder”, A. Altinkaynak, M. Gupta, M. A. Spalding, and S. L. Crabtree, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 2006, Vol. 52, 809 – 813.

“Elongational Flow in Multiple Screw Extruders”, J. E. Loukus, A. C. Halonen and M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 2004, Vol. 50, 133 - 137. PDF

“Comparison of the Flow in Co-rotating and Counter-rotating Twin-screw Extruders” A. Shah and M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 2004, Vol. 50, 443 - 447. PDF

“Simulation of Polymeric Flow in a Twin Screw Extruders: an Analysis of the Elongational Viscosity Effects”, A. Shah and M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, 2003, Vol. 49, 322 - 326. PDF

Elongational Viscosity Estimation

“Elongational Viscosity of LDPEs and Polystyrenes using Entrance Loss Data”, K. Walczak, M. Gupta, K. A. Koppi, J. Dooley, and M. A. Spalding, Polymer Engineering and Science, February 2008, Vol. 48, 223 – 232. PDF

“A Comparison of Axisymmetric and Planar Elongational Viscosities of PE-LD”, P. Beaupre and M. Gupta, International Polymer Processing Journal, December 2002, Vol. 17, 370 – 375. PDF

“A Comparison of Axisymmetric and Planar Elongational Viscosities of a Polymer”, P. Beaupre and M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 2002, Vol. 48, 892-896. PDF

“Estimation of Elongational Viscosity of Polymers From Entrance Loss Data Using Individual Parameter Optimization”, M. Gupta, Advances in Polymer Technology, April 2002, Vol. 21, 98 – 107. PDF

“Investigation of the Effect of Elongational Viscosity on Entrance Flow Using a New Elongational Viscosity Model”, D. Sarkar and M. Gupta, Journal of Reinforced Plastics and Composites, November 2001, Vol. 20, 1473 – 1484.

“Estimation of Elongational Viscosity of Polymers for Accurate Prediction of Juncture Losses in Injection Molding”, M. Gupta, Society of Plastics Engineers Annual Technical (ANTEC) Papers, May 2001, Vol. 47, 794 – 798. PDF

“Estimation of Elongational Viscosity Using Entrance Flow Simulation”, D. Sarkar and M. Gupta, CAE and Related Innovations for Polymer Processing, November 2000, MD-Vol. 90, 309 – 318. PDF