1.Physical and mechanical property of cover layer: Property level of cover layertensile strengthtensile yieldabrasion value Mpa%mm3 H24.0450120 D18.0400100 L15.0350200 2.Tensile property of through thickness: A. The longitudinal tensile strength is not lower than the following nominal value: 160 200 250 315 400 B. The through thickness elongation rate of the belt should not less than elongation rate of trough thickness of the belt should no more than 4%, C. Straightness: no more than 25mm. D. Plunger bond strength: Index descriptionstrength between layerscover layer and fabric layer Thickness of cover layer1.5mmthickness of cover layer >1.5mm Sample average value3.2n/mm2.1n/mm2.7n/mm
