| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyurethane-made toothed belt capable of restraining decoloration even in use or storage under exposure to a ultraviolet ray, having little appearance change with the lapse time, for restraining sound in meshing to a pulley, and to be used in the quiet environment such as an office. SOLUTION: In a polyurethane-made toothed belt 1 in which tooth parts 5 and groove parts 6 are alternately formed on the inner side at a specified pitch, a tensile body 3 is embedded in the pitch line position, and light resistant stabilizer formed by blending benzotriazol-based ultraviolet ray absorbent, hindered amine-based ultraviolet ray stabilizer and hindered phenolic antioxidant is added to a polyurethane elastic body lard is added as a lubricant. |
