Abstract: A textile woven glass-PTFE fabric is disclosed. The fabric consists of multifil threads composed of filaments which are coated with fully sintered PTFE. The interstices between the filaments are completely filled with fully sintered PTFE, and the outer surfaces of the threads are formed by the coatings on the filkaments.

Abstract: The invention pertains to a method for producing heavy-duty yarn prepregs of glass fibers or aramide fibers or carbon fibers, wherein the fibers are soaked in a PTFE dispersion, subsequently conveyed through a nozzle and simultaneously pressure-impregnated, and wherein the air that is still situated between the individual filaments of the fibers is pressed out and the individual filaments are completely encased with PTFE and then dried. The objective of the invention consists of achieving an additional increase in the strength of the yarns, in particular, in the resistance to abrasion, with a method of this type.

Abstract: An improved method for producing impregnated reinforcing threads is disclosed. The method involves impregnating glass, carbon or aramid fibers with a twist ≦120 turns/m with a polymer dip, drawing the impregnated threads through a nozzle, drying the threads superficially in a first heating zone where they are kept moist in the core, and then providing them with a twist up to 400 turns/m in a second heating zone in which they are heated to fix this twist. The fibers are intimately impregnated with polymer, so that the impregnated threads have high fatigue strength, and a compact, constant cross section throughout their length. The impregnated threads are particularly suitable for reinforcing driving belts and high pressure hoses; they can be made into wovens and scrims which, in turn, can be used for reinforcing tires, conveyor belts and the like.