METHOD OF MANUFACTURING A FRICTION MATERIAL AND ESPECIALLY A CLUTCH FRICTION RING

摘要

The invention relates to a method of manufacturing a friction material, more particularly a friction ring for a clutch friction disc, which includes an operation of impregnating a wire comprising mineral fibres by means of an aqueous impregnation cement containing at least one surfactant-type compound and fillers, characterized in that the surfactant-type compound is a polyvinyl alcohol. Friction ring preferably obtained by said method.