Dependence of Air Permeability on Fabric Porosity and Integrated Fabric Firmness Factor ϕ

Abstract

Synthetic filtering materials are quite widely used for the air filtering, and the filtering characteristics depend on the structure of fabrics. The air permeability of fabrics may be kept as one of characteristics of filtering parameters of the fabric. This property is also important for the fabrics used in aviation industry. In this article features of the technical fabrics, dependence of the air permeability from various parameters of the structure of fabrics are analysed. In the article the fabrics woven from various polyester multifilament yarns with different sets of yarns, dependencies of air yield permeating from the areas of fabric pores are presented. It has been found that yield of air permeating in fabrics also depends on the integrated fabric firmness factor ϕ. In the article dependencies of air permeability on the integrated fabric firmness factor ϕ is analysed.