The drying oven is equipped with the high-efficiency axial flow blower featuring the high drying efficiency and also designed with the multi-zone temperature control so as to accurately control the temperature at each zone of the oven in accordance with the processing requirements. Multi-stage tension control; the variable-frequency or digital DC speed control system is employed and the multi-point synchronous controller is used to control synchronous operation of the unit. EPC is adopted so as to ensure that the edges of finished product are orderly and regular. With two Mayer-Bars rewinding and unwinding unit can automatically cut and join the tape without stopping the system to feed paper and also have a higher efficiency.