Patent ID: 8496772
Filing Date: 2013-07-30
Classification: B29D

Abstract:
1. A tire building method for obtaining an unvulcanized green tire by laminating a carcass ply on a rubber layer containing an inner liner to build a cylindrical carcass band, setting a bead on the carcass band and turning up the carcass band to build a cylindrical green case, and assembling and combining a cylindrical belt and tread band on which a belt, a tread and the like are laminated on the outer circumference of the green case to build a final shape, characterized in that: (1) a step for building the cylindrical carcass band, a subsequent step for building the cylindrical green case, a step for building the cylindrical belt and tread band, and a step for combining the green case and the belt and tread band to build the final shape are divided as first through fourth building stages S (2) with a fourth building stage S (3) formations in the respective stages S the carcass band built in the first building stage S the green case built in the second building stage S the belt and tread band built in the third building stage S (4) the first building stage S (5) rubber components are built by winding band-shaped rubber strips extruded from extruders E