Effects of Filament Fineness and Weft Sett on the Permeability Properties of Microfilament Woven Fabrics

In this study, it is intended to investigate the effects of weft sett and filament fineness on woven fabric permeability properties of water repellent finished microfilament woven fabrics. For this purpose, 1/1 plain weave and 3/2 hopsack weave types were selected and different weft sett values were applied with the same warp sett. Different filament finenesses were applied as 1,14 dtex, 0,76 dtex, 0,57 dtex and 0,33 dtex in weft direction with 110 dtex yarn linear density. Water repellency treatment was applied to samples in same conditions. Contact angle and spray rating water repellency tests were applied to samples to determine the water repellency properties of samples. On the other hand, air permeability and water resistance tests were performed in order to assess the permeability properties. For both weave types, air permeability was decreased by increasing weft sett and using finer filaments in yarn structure. On the other hand, for hopsack weave samples there was no effect of weft sett and filament linear density on water resistance whereas for plain weave samples water resistance was increased by increasing weft sett and using finer filaments