ENDLESS FLAT BELT AND MANUFACTURING METHOD FOR THE SAME

PROBLEM TO BE SOLVED: To provide an endless flat belt which can suppress an adhesive failure caused by variations in pressure at the time of pressure-bonding a belt, a higher load on a machine caused by high pressure-bonding the belt in order to prevent the variations in pressure, increase in abrasion loss of the belt, reduction in service life caused by breakage and the like.SOLUTION: An endless flat belt 17 comprises: a tension member layer 18 including an inner rubber layer 1 and a cord core wire 11 buried in the inner rubber layer 1 and wound around spirally at prescribed pitch in a belt width direction; a reinforcement cloth 2 adhered to the inner rubber layer 1; and a surface rubber layer 3 laminated on the surface of the reinforcement cloth 2. A tensile elastic modulus in a belt circumference direction and a tensile elastic modulus in a belt width direction of the tension member layer 18 are 100-5000 MPa and 1-2000 MPa respectively, and a tensile elastic modulus in the belt circumference direction and a tensile elastic modulus in the belt width direction of the reinforcement cloth 2 are 0.1-2000 MPa and 200-2000 MPa respectively.SELECTED DRAWING: Figure 3 【課題】ベルト圧着時の圧力ムラによる接着不良や、圧力ムラをなくすために高圧着させることによってひき起こされる機械への高負荷、ベルトの摩耗量増加、破断による短寿命化等を抑制することができる無端状平ベルトを提供する。【解決手段】内部ゴム層１とこの内部ゴム層１内に埋設されかつベルト幅方向に所定のピッチで螺旋状に巻回されたコード心線１１とを含む心体層１８と、内部ゴム層１に貼付された補強布２と、この補強布２の表面に積層された表面ゴム層３とを備えた無端状平ベルト１７であり、心体層１８のベルト周方向の引張弾性率が１００〜５０００ＭＰa、ベルト幅方向の引張弾性率が１〜２０００ＭＰa、かつ、補強布２のベルト周方向の引張弾性率が０．１〜２０００ＭＰa、ベルト幅方向の引張弾性率が２００〜２０００ＭＰaである。【選択図】図３