Air Permeability of Fabrics Made from Unique and Conventional Yarns

Air permeabilities for two woven fabric constructions having common warps but different filling yarns were measured. The filling yarns were produced by ring spinning, open-end spinning, core-wrapping with filament, and a no-twist process. Comparison of air permeabilities of the woven fabrics were made in the gray and bleached states. The effects of yarn structure, yarn twist, yarn crimp, and filament wrapping are discussed in relation to their effects on the air permeability of the two woven fabrics.