| 摘要 |
PROBLEM TO BE SOLVED: To provide a round belt of low self-rotation property which can maintain a friction coefficient reduction effect for a long time without applying a lubricant to a surface thereof. SOLUTION: The round belt 20 entrained over a pair of drive pulley and driven pulley arranged with revolution surfaces being twisted by predetermined angle is made by adding a first lubricant and a second lubricant both having a bleed characteristic to a thermoplastic elastomer or an thermosetting elastomer and is used without applying a lubricant to the surface of the round belt 10. |
