| 摘要 |
<p>A method for manufacturing a pneumatic tire including insert plies (35) in its sidewall portions, wherein said insert plies are formed on an outer peripheral side of a carcass band (31), said method comprising the steps, for forming a green tire, of radially outwardly expanding a widthwise center portion of a substantially cylindrical carcass band (31) having marginal portions to which bead rings (32) are attached, by moving the bead rings axially toward each other; forming the insert plies (35) by applying, on both side portions of the carcass band (31) separated from each other with the center portion therebetween, reinforcing cords (34) to extend approximately in parallel with the circumferential direction; and enhancing a degree of radial expansion of the carcass band (31) by further moving the bead rings (32) axially toward each other, so as to increase a tension of the reinforcing cords (34) and thereby bring an outer face of a resultant crown portion into contact with a belt and a tread for joining. <IMAGE></p> |
