Paper bag machine series is applied to produce many types of paper bags without handles, such as food paper bag, shopping bags and so on. It is an ideal equipment for producing mid-size and big-size paper bags fast. This machine is side gluing, roll folding, roll paper cutting, bottom folding, bottom gluing, bottom forming, bag out in one line. It is easy to operate, highly efficient, stable, and effectively save labor costs. The equipped photoelectric detector can correct cutting length, to ensure cutting precision. The equipped PLC system ensures that the machine can perform quickly and stably. Special bags collection platform and counting function, improve packing efficiency of paper bags packing. This machine can produce paper bags of varying greatly sizes at a high speed, thus is especially suitable for being applied in food and clothing industries.