These film sealing device is used for closing heavy and duty bags. Thank’s to heating wire 4 mm wide, positioned on both jaws, it’s possible to seal any types of thermoplastic thickness bags. The sealing starts for a few seconds when the pedal is lowered and the sealing time can be regulated in according to the bag’s gouge. STP 400 can be suitable with bead heating band in order to achieve separation with a wider sealing seam.