Belt

A belt which prevents generation of cracks and noises at a joint part of a canvas. Tooth faces of tooth parts (4) of a synchronous belt are covered with the canvas (5). A warp yarn (6a,6b) of the canvas is such formed that a necessary number of spun yarns or filament yarns are gathered and given a final twist at many twisting times of 1000-3000 per meter. The warp yarns (6a,6b) of the canvas is so composed that a first pair of warp yarns made of an S twist yarn and a Z twist yarn and a second pair of warp yarns made of a Z twist yarn and an S twist yarn are arranged alternately in a belt-width direction. A weft yarn (7) of the canvas is composed of well known spun yarns or filament yarns. The canvas (5) is woven by the warp yarns and the weft yarns and shrunk in hot water so as to stretch in a belt-length direction. As compared with the conventional belt in which a canvas with high-stretchable crimp yarns for weft yarns is such used that the direction of the crimp yarns accords with a longitudinal direction of the belt, the number of joint parts of the canvas by which cracks are caused is reduced.