Effect of fibre orientation on mechanical and functional properties of needle-punched nonwoven

321-328An attempt has been made to study the effect of fibre orientation, measured by the structural characteristics, on mechanical and functional properties of needle-punched nonwoven by varying the carding machine and punching parameters. It is observed that all measured physical, mechanical and functional properties of nonwovens have strong correlation with the proposed structural characteristics. Cylinder speed, punch density and needle depth penetration have significant effect on fabric thickness, air permeability, pore diameter, filtration efficiency and pressure drop