Analysis of surface unevenness of knitted fabrics made with PTT/PET bi-component filaments

To study the unevenness on the surface of PTT/PET plain knitted fabric,seamless knitted fabrics with PTT/PET were woven on trial basis.The″random strip unevenness″which couldn′t be eliminated by technical adjustments on the surface of PTT/PET plain fabrics was analyzed by studying the original configuration of PTT/PET and the configuration of PTT/PET after simulated finishing process.It was found that the three-dimensional endless spiral crimps of PTT/PET is the cause of″random strip unevenness.″ Based on this,a new kind of PTT/PET filaments was made by improving the spinning process.The″random strip unevenness″was disappeared on the surface of knitted fabric made of the new PTT/PET filaments,and it appears uniform and aesthetic.