the whole machine adopts microcomupter control and step motor for material feeding . 2,arbitrary fixed length accurate and stable step photo electric tracking .stopp automatically when the any mark is lost . 3.automatic pressure synchronous punching and synchronous sealing . 4.automatic counting ,automatic alarming when reaching preset number . 5.heat sealing decrative border ,automatic constant temperature ,firm and smooth sealing . Model:RDL-800B Max. width of film roll:800mm Max. cutting length:50-700mm Max. bag-making width:780mm Production capacity:40-150pcs/min Total power: 3.6kw Weight of machine:1200kg Overall dimensions (LxWxH):4500x1200x1750mm