Servo PLC is used to centrally control the touch screen to set parameters, imported alloy smokeless knife is used for hot cutting, and servo motor is used to control flying knife for cold cutting. It has two functions of cold cutting and hot cutting, one key conversion. Discharge pneumatic lifting, automatic deviation correction, automatic bench marking, automatic length setting, cutting, automatic folding, automatic sewing, automatic thread breaking, automatic printing, counting and bag folding of cylinder cloth. Automatic mouth rubbing after hot rolling, the mouth of the bag is not sticky and easy to open. It adopts manipulator transportation, with fast speed and stable performance. A series of functions such as automatic alarm or shutdown when the line is broken. Accurate printing color registration, uniform ink transfer, equipped with automatic drying device. Simple and fast operation, high output and less energy consumption.