Evaluation of a model for predicting the air-permeability of needle-punch and calendered material

@article{Dedov2009EvaluationOA,
  title={Evaluation of a model for predicting the air-permeability of needle-punch and calendered material},
  author={Alexander V. Dedov and I. B. Esmurziev},
  journal={Fibre Chemistry},
  year={2009},
  volume={41},
  pages={246-247}
}
The proposed model has limited use for evaluating the effect of the needle-punching and calendering regimes on the air-permeability of the material. It is somewhat difficult to correct the model to consider the effect of changes in thickness during needle-punching and calendering. The limited use of the model is due to the use of the filling factor and thickness of the material as the structural parameter.