INTERWOVEN BELT FABRIC
An interwoven belting fabric (100, 200) for use in conveyors, including treadmills, is constructed of a dual layer of weft yarns (105, 106, 206, 207) comprising adjacent couplets (110-119, 210-219), a plurality of middle warp yarns (107, 208), and a plurality of binder warp yarns (120-122, 220-222). Each middle warp yarn is heat set under tension so that it is sufficiently straight and inelastic to bear loads under tension without twisting or stretching.