The endless conveyor belt is a jointless endless conveyor belt during the production process. It is characterized by no joints and no impact on the service life due to early damage to the joint. The surface of the tape is flat and the tension is uniform. Small growth rate. The endless conveyor belt will stretch during use, and part of it is elastically stretched, and can return to its original shape after the external force is withdrawn. Among the commonly used fabric core conveyor belts, the elongation of the EP conveyor belt is relatively small, and the NN conveyor belt has a relatively large elongation. In addition, during use, the NN conveyor belt has a relatively large creep after the nylon fiber is stressed. , The elongation ratio is increased, and because the fiber creeps, after the external force is withdrawn, the amount that can shrink back is much smaller than the elongation.