Abstract
Knitted fabrics have superior expansion and contraction properties because of their loop structure. Light transmission factor is changed by extension. Light transmission properties of plain knitted fabrics stretched by uniaxial load and by biaxial load were measured, and relationship between stretch and anisotropic light transmission properties was studied. In uniaxial load, when the samples were stretched at the same extension rate along the wale direction and the course direction, they showed different light transmission factors because the stitch densities of wale and course changed with Poisson's ratio. Light transmission factor at front of a fabric was estimated from stitch densities of wale and course, Poisson's ratio of knitted fabric and diameter of yarn in stretch. In biaxial load, when the samples were extended in the same area, they showed same light transmission factors. Light transmission factor at front of a fabric was estimated from stitch densities of wale and course and diameter of yarn in stretch. It was confirmed that anisotropic light transmission properties were different by tensile conditions.
