METHOD FOR PROCESSING AROMATIC POLYAMIDE FIBER FOR REINFORCING POWER TRANSMISSION BELT

摘要

PURPOSE:To enhance the durability and fatique resistance of a power transmission belt by applying a treatment agent composed of an org. solvent solution of a urethane resin to a cord in an amount of specific % by wt. of the cord and subjecting the treated cord to drying and heat treatment to apply an adhesive thereto. CONSTITUTION:A multifilament composed of aromatic polyamide fibers is subjected to thread twisting of a reinforcing cord being a core material for a belt to obtain a cord and a treatment agent composed of an org. solvent solution of a urethane resin is applied to the cord in an amount of 3-35% by wt. of the cord and the treated cord is dried and heat-treated to be coated with an adhesive. The cord is a plied cord obtained by applying final twisting to several first twist cords. By this method, a power transmission belt wherein fibrilation, compression fatique properties, yarn-yarn abrasion and the lowering of durability or fatique resistance caused by the fray of the power transmission belt are eliminated is obtained.