Photoelectric control dotting-off roll film bag-making machine Features: 1) Used for sealing and cutting low density polyethylene (LDPE) and high density polyethylene (HDPE) natural color bags and color printed bags 2) Automatic bag-making counter and automatic alarm 3) With accurate photoelectric eye tracking, machine automatically stops when bag-making error exceeds 4 pieces 4) Bag making length controlled by button switch 5) Widely used for packing food, garments, industrial products and electrical appliances