Nonwoven Fabric Studies: Part III: The Anisotropy of Nonwoven Fabrics

Abstract

The anisotropy of nonwoven fabrics of various types has been studied in terms of modulus, strength, breaking extension, and fiber orientation. Polar diagrams for these quantities are given. Another important factor is the degree of curl in the fibers, and results are compared from different types of fabric and different directions. The variations in mechanical properties with direction are explained in terms of the structural features.