Roll Feeding square bottom paper bag making machine forming the paper bag in one process from printed forming, bag formation at a stroke. This machine controls by PC programmable servo motor through the have advantages of high speed, quickly replace the paper bag specifications, more wide range adjusting.or unprinted paper roll, side gluing, folding, paper cutting, bottom folding, bottom gluing, bottom human-machine touch screen interface. It can produce various of specifications paper bags. This machine etc. It is an ideal machine for producing food bag & shopping bag.