| 摘要 |
The invention provides a performer which can form a tread having a clapboard-shaped cross section in an enough width from a lower end to an upper end through extrusion moulding. In the performer for the extrusion moulding of rubber materials for the tread, a conductive rubber flow path for conductive rubber to flow is arranged in the center, tread rubber flow paths for tread rubber to flow are arranged nearby the two sides of the conductive rubber flow path, the side surface of the tread rubber flow path at the side of the conductive rubber flow path inclines 70-80 degrees toward the downstream side relative to a vertical surface which is perpendicular to the conductive rubber flow path, the front end of the extruding opening side of the conductive rubber flow path is configured to protrude 5mm-15mm toward the downstream side compared with the front ends at the extruding opening sides of the tread rubber flow paths. |
