Modelling and simulation of biaxial stretching of PVC-films

• Autorzy: Zgardzinski K. , Oelschlägel F. , Schnabel R.
• Konferencja: Second International Conference on Engineering Rheology ICER 2003
• Języki publikacji: EN

Abstrakty

EN

The present work attempts to investigate the behaviour of PVC-U films in a simultaneous biaxial stretching process. The numerical simulations of the biaxial stretching were performed using a finite element method for Newtonian and viscoelastic fluids with POLYFLOW-CFD program (FLUENT Inc.). For the rheological modelling of the PVC-U melts, in this problem will be used the different viscoelastic model, where the modes obey the Phan-Thien-Tanner (PTT) constitutive equation. Measurements of density, viscosity and modules and were used to determine the parameters in the model. Simulation results were compared with practicable findings on a laboratory system. We simplified the equations by the assumption obtained the film thickness and mean value of stress and velocity components in the thickness direction as variables. The effect of biaxial extension under various conditions (temperature and deformation rate) on the morphology and mechanical properties of stretched films is investigated.

Słowa kluczowe

EN

film casting; thickness; viscoelastic; stretching; temperature

PL

materiałoznawstwo; lepkosprężystość; rozciąganie; temperatura

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2003
• Tom: Vol. 8, no spec.
• Strony: 325--331
• Opis fizyczny: Bibliogr. 6 poz., rys., wykr.

Twórcy

autor

Zgardzinski K.

• Department of Engineering Sciences, Institute of Process and Material Behaviour Martin-Luther-University Halle-Wittenberg, Geusaer Str., 06217 Merseburg, GERMANY

autor

Oelschlägel F.

• Department of Engineering Sciences, Institute of Process and Material Behaviour Martin-Luther-University Halle-Wittenberg, Geusaer Str., 06217 Merseburg, GERMANY

autor

Schnabel R.

• Department of Engineering Sciences, Institute of Process and Material Behaviour Martin-Luther-University Halle-Wittenberg, Geusaer Str., 06217 Merseburg, GERMANY

Bibliografia

• [1] Siginer D.A., de Kee D. and Chhabra R.P. (1999): Advances in the Flow and Rheology of non-Newtonian Fluids. - New York: Elsevier.
• [2] Beaulne M. and Mitsoulis E. (1993): Numerical simulation of the film casting process. - I. Polymer Processing XIV, No.3, pp.261-275.
• [3] Breil J.: New developments for biaxiale stretched polyolefin films with linear motor driven simultaneous stretching technology. - Bruckner Maschinenbau GmbH, www.bmeckner.de.
• [4] Debbaut B., Hagstrom B. and Karlsson H. (2002): Effect of material properties on thickness, neck-in and edge beadings in coextruded film casting. - Proc. of the XVIII-th Annual Meeting of the Polymer Processing Society (J.A. Covas, Ed.), Guimaraes, Universidade de Minho, paper Id 221.
• [5] Poly flow User’s manual, version 3.9.0. (2002): Fluent Inc. Lebanon NH.
• [6] Satoh N., Tomiyama H. and Kajiwara T. (2001): Viscoelastic simulation of film casting process for a polymer melt. - Polymer Engineering and Science, September 2001, vol.41, No.9, pp.1564-1579.