The study is used polyester and nylon mixed with 40%and 30% modified polyester ,through opening and combing by roller card ,the static random arrnngement fiber system was added under the doffer.By changing the voltage(±5kV、±10kV、±15kV、±20kV、±25kV),then t o heat -pressed .Discussing the tensile strength and tear strength at MD,CD at different angular(0°、30°、45°、60°、90°)and different voltage.