초록 ▼

A green tire building process comprises: the steps of: jointing both longitudinal ends of a belt-like tread rubber for producing an endless tread band, and applying the endless tread band on an inner periphery of an annular face: jointing both longitudinal ends of a belt-like breaker ply for produci

A green tire building process comprises: the steps of: jointing both longitudinal ends of a belt-like tread rubber for producing an endless tread band, and applying the endless tread band on an inner periphery of an annular face: jointing both longitudinal ends of a belt-like breaker ply for producing an endless breaker band, and disposing the endless breaker band within said endless tread band with its mid-circumferential plane being aligned with that of said endless tread band; expanding the endless breaker band radially and applying the endless breaker band on the inner periphery of the endless tread band for building a tread breaker assembly; disposing a cylindrical green case within and in coaxial relation with the tread breaker assembly; deforming the cylindrical green case toroidally to be applied on the inner periphery of the endless breaker band for integrally building the cylindrical green case and the tread breaker assembly.

대표청구항 ▼

A green tire building process, comprising: the steps of: jointing both longitudinal ends of a belt-like tread rubber for producing an endless tread band which has a circumferential length substantially equal to a final circumferential length at a time when said endless tread band is to be assembled

A green tire building process, comprising: the steps of: jointing both longitudinal ends of a belt-like tread rubber for producing an endless tread band which has a circumferential length substantially equal to a final circumferential length at a time when said endless tread band is to be assembled with a cylindrical green case having at least a carcass ply and a pair of beads embedded in both axial end portions of said carcass ply, and applying said endless tread band on an inner periphery of an annular face; jointing both longitudinal ends of a belt-like breaker ply for producing an endless breaker band which has a circumferential length shorter than a final building circumferential length at a time when said endless breaker ply is to be applied on an inner periphery of said endless tread band, and disposing said endless breaker band within said endless tread band with its mid-circumferential plane being aligned with that of said endless tread band; expanding said endless breaker band radially to its final building circumferential length and applying said endless breaker band on the inner periphery of said endless tread band for building a tread breaker assembly; disposing said cylindrical green case within and in coaxial relation with said tread breaker assembly; deforming said cylindrical green case toroidally to be applied on the inner periphery of said endless breaker band for integrally building said cylindrical green case and said tread breaker assembly.