Each textile fiber offers a distinct cross sectional appearance when seen under a microscope.
Though the majority of synthetic fibers have a circular cross section, but the shape could be altered or engineered during the manufacturing process.
[1][2] The cross-section of a fiber has an effect on the appearance, hand, drape, flexibility, and moisture wicking properties.
Numerous physical characteristics such as hand, bulkiness, and luster are associated with cross sectional shape.
[4][5][6][7] Different shapes have their own significance; for example, the trilobal cross section contributes several physical properties to the fibres, including strength and static properties, in addition to providing brightness..[8] Furthermore, the trilobal cross sectional shape of filament aids in the reduction of manufacturing defects.