Square packaging bag making (also called eight-edge sealing) machines are widely used currently on both the domestic and foreign markets. Feeding at the organ part is generally realized
by Yamaha mechanical hand or servo direct feeding. Corresponding electrical system includes such main modules as traction, location, spot pressing and cutting modules.The main controller for this part
is composed of a PLC system and a man-machine interface (i.e. touch screen) together with such subsystems as temperature control, tension, correction and feeding subsystems to realize operation based on integrated optical-mechanical-electronic functions.