Specially designed to make square bottom paper bags. It can form the paper bag in one process from the paper roll, printing, side gluing, paper patching, tube forming & cutting, bottom creasing & gluing and forming to bags collection in the control of servo motor system (Mitsubishi brand, imported from Japan) to ensure the high precision and stability, simple maintenance and high efficiency, bags length adjustment and collection can be operated through touch screen. Thus it is an ideal equipment for printing factories and paper bag manufacturers.