Tapes, or binders, and fillers are applied to improve flexibility or roundness of the cable, to protect the insulation or sheath, or to ease production. If you've ever wondered how fiber optic cables keep your internet blazing fast—even when buried underground or strung across neighborhoods—there's an invisible hero inside: water blocking binder yarn (WBBY). This clever, high-tech yarn is essential for keeping fiber cables safe, reliable, and. Loose tube fiber optic cablestypically use crisscrossing binder yarns that are counter- helically wrapped about a core of the cable to constrain stranded buffer tubes containing optical fibers, particularly with arrangements of the buffer tubes that include reverse-oscillatory winding patterns of. Benefitting from our knowledge and production of both cable machinery and cable fibers, our binders offer state of the art tension control. Roblon binders allow dual-end binding, as it can operate from one to four yarns simultaneously in one single binding point. Excellent balancing of the binder. With several decades' experience within fiber optic cable machinery and materials, Roblon has established this knowledge and built up a position as market leader on binders and cable machinery and as a recognized supplier of high-performance fiber solutions to the fiber optic cable (FOC) industry. Our Polyester Binder Yarn is available in a dual-end version, enhancing line speed and. More specifically, aspects of the present disclosure relate to a binder film for constraining elements of a cable, such as buffer tubes wound around a central strength member in a core of a fiber optic cable.