GFC Binder Yarn is used for binding of SZ-stranded optical fibers at high speed. They are available in Low Shrinkage (LS) and Ultra Low Shrinkage (ULS) versions. Since optical fiber cable designs are becoming more and more compact, Roblon supplies low shrinkage binder yarn as a standard. The small and compact cables offer little or no margin for material shrinkage and, therefore, GFC has introduced the ultra low shrinkage binder yarn. POLYSTRAND Binder Yarn is made of high grade polyester which ensures the constant elongation properties required for precise tension control during production. POLYSTRAND Binder Yarn can be supplied as dual-end versions. I.e. two parallel yarns are being pulled off at the same time, and this makes it possible to increase the speed by up to 50%.