Twelve sets of servo motors (mould servo 17KW 22KW) for the whole machine ensure high-speed and stable operation of the equipment. Using the material saving device (no waste on the edge), each bag saves 6MM material. The equipment structure is U-shaped, covering an area of only 5.3 meters * 7.5 meters, saving site costs. The function of automatic deviation correction of bag mouth and strip center distance is adopted to ensure that the bag mouth of each bag is flat and the strip is centered, which greatly improves the qualified rate of finished products. The degree of automation is high, and the mold changing machine is automatically positioned, which greatly improves the efficiency.