Use: It is used for blowing various plastic films of low-high density polythylene natural colour bag and colour printing bag, which are widely used for packing food ,garments, industrial products and electric appliances etc.Characteristics: 1.Automatic bag-making counting and automatic alarm. 2.with accurate photoelectric eye tracking, the machine can be automatically stopped when bag making error exceeds 2 pieces. 3.The length of the bag is controlled by the button switch.