Meltblowing: Multiple polymer jets and fiber-size distribution and lay-down patterns

A. L. Yarin, S. Sinha-Ray, B. Pourdeyhimi

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

In this work a comprehensive model of three-dimensional configurations of polymer jets in meltblowing from die exit to deposition screen is developed. In addition, multiple jets were modeled simultaneously, as well as deposition on a screen moving normally to the principal jet direction was accounted for. All important properties of polymer melts are used in the simulations, namely density, zero-shear viscosity and the viscoelastic relaxation time. In addition, the material parameters responsible for the temperature-dependent variation of the material properties are used. All the other parameters are the operational parameters characterizing gas flow. The results include prediction of the fiber deposition patterns and fiber-size distributions in the resulting nonwovens. The angular distributions in lay-down nonwovens are also predicted. Comparisons with the experimental data suggest that the model captures main trends rather accurately.

Original languageEnglish
Pages (from-to)2929-2938
Number of pages10
JournalPolymer
Volume52
Issue number13
DOIs
Publication statusPublished - 2011 Jun 8

Keywords

  • Meltblowing
  • Multiple polymer jets
  • Turbulent flow field

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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