... fiber made by PBT has the similar characters with polyester fiber,thr temperature of PBT fibers melting point ... andglassily is more lower than polyester fiber,which improve the softness and elasticity on ... ,abrasion resiatance,crimp,elasticity and better recovery than nylon.3. Easy dyed. And also it has good color ... treatment.Space:30D-300D(DTY) Anti Static PBT polyester yarn