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 language | English |
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Pages (from-to) | 2929-2938 |
Number of pages | 10 |
Journal | Polymer |
Volume | 52 |
Issue number | 13 |
DOIs | |
Publication status | Published - 2011 Jun 8 |
Keywords
- Meltblowing
- Multiple polymer jets
- Turbulent flow field
ASJC Scopus subject areas
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry