Tire manufacturing method

Abstract

A green tire (20) is put into a mold (16) in which an insert core (18) and a bladder (22) are accommodated. In the putting operation, a diameter of the insert core (18) is reduced and the bladder (22) is contracted. After the putting operation, the diameter of the insert core (18) is increased so that an inner surface of a bead (8) of the green time (20) abuts on an insert core plate (36). The bead is interposed between the insert core (18) and a cavity surface (34). By filling a gas, the bladder (22) is gradually expanded. The mold (16) is clamped so that an internal pressure of the bladder (22) is further raised. A portion of an inner peripheral surface of the green tire (20) which does not abut on the insert core (18) abuts on the bladder (22). The green tire (20) is heated by a thermal conduction from the mold (16) and the bladder (22).

Dependencies are inferred from the claim text.