| 摘要 |
PROBLEM TO BE SOLVED: To provide a method capable of efficiently molding a bead apex. SOLUTION: A rubber material 2 is extruded from an extruder 3. This rubber material 2 is spirally wound around the outer peripheral side of a bead core 1 to be stacked so as to control the rubber material 2 so as to gradually reduce the cross-sectional area thereof. COPYRIGHT: (C)2005,JPO&NCIPI
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