The machine is suitable for closure of horizontal bags. The welding system with PTFE belts allows the closure of bags made of polyethylene, polypropylene, cellophane, coated paper, laminated aluminum, etc. The temperature is controlled by an temperature controller and the feed speed is adjustable. The distance between the welding and the edge of the bag is 10 mm.The distance (width) between the welding head and the conveyor belt is adjustable and is also adjustable the height of the conveyor belt relative to the floor.The machine is equipped with rotary solid ink marker and interchangeable characters (20 characters max height 5 mm.), The system works with inked rollers for easy handling and comes complete with photocell to make the marking at the desired point.