ANNULAR CONCENTRICALLY TWISTED BEAD CORD

摘要

PROBLEM TO BE SOLVED: To provide consistent corrosion resistance to an annular core of an annular concentrically twisted bead cord at low cost for a long period. SOLUTION: A thick Al-Zn alloy plating or thick Zn plating layer 3 is formed on the surface of a steel wire of an annular core 1 so that the surface of the steel wire is hardly exposed even when fretting occurs between the annular core 1 and a side wire 2, or a stainless steel is used as a material of the annular core 1 to ensure consistent corrosion resistance of the annular core 1 at low cost for a long period. COPYRIGHT: (C)2006,JPO&NCIPI