POLYVINYL ALCOHOL BASED SYNTHETIC FIBER FOR RUBBER REINFORCING

摘要

PURPOSE:To obtain the title fiber for rubber reinforcing remarkably improved in fatigue resistance by subjecting a high-strength PVA based synthetic fiber having strength of specific value or above to crosslinking treatment with an organic titanium and then treating the fiber with an adhesive. CONSTITUTION:A high-strength PVA based synthetic fiber having >=15g/d dope strength is treated with a liquid for crosslinking treatment obtained by diluting an organotitanium with water or an organic solvent to give a synthetic fiber containing 0.01-0.1wt.% organic titanium, which is then treated with a normal RFL adhesive to provide the PVA based synthetic fiber for rubber reinforcement causing no lowering of strength of the fiber (or tire cord) also after practical running when the fiber is applied to air tire and having excellent effects.