| abstract |
The present invention relates to a power transmission belt. A power transmission belt (10, 30) includes a compression section (16, 36), a tension section (12, 32), and a load transmission section (14, 34). The load transmission part (14, 34) has a plurality of reinforcing cords (22, 42). The reinforcing cords (22, 42) are made of polyparaphenylene-2,6-benzobisoxazole (PBO). In each reinforcing cord (22, 42), the cord has a yarn having a greater number of twists than its own number of twists, the cord twist number being in the range of one-quarter to one-half of the ply twist number. Is done. [Selection] Figure 1 |