Influence of Layer Orientation upon Textile Systems Tensile Properties. Part 2. Investigation of Tensile Energy and Linearity

Abstract

The paper presents further analysis results concerning layer orientation effect upon textile systems tensile properties. In
the first part investigations of tensile strain and tensile resilience were presented. In the second part tensile energy WT
and linearity LT is discussed. Tensile properties were investigated using KES-F (Kawabata Evaluation System for
Fabrics) automatic tensile/shear system at garment wearing level loads. Bilayer textile systems composed of outer
fabrics and interlinings were investigated. Tests were performed with four outer fabrics and two interlinings (warp
knitted and non-woven). Three types of fused textile systems were prepared by changing orientation of fusible
interlinings, i.e. in parallel, in bias and perpendicularly to outer fabric warp direction. Tensile properties were
investigated in longitudinal and transverse directions (in respect to outer fabrics warp direction) and on the basis of
obtained results recommendations were given to achieve the desirable mechanical reaction of fused textile system.
Influence of layers’ orientation upon textile systems tensile behaviour, i.e. tensile energy WT and linearity LT at low
tensile loads is significant for fused systems, which are tensioned in transverse direction and insignificant for systems,
tensioned in longitudinal direction in respect to outer fabric’s warp direction.