This machine was purposely designed to guarantee a safety sealing over five gallon closures, by punching printed labels from a reel and welding them on the top of the cap. However the flexibility of this unit allow to label several other types of closures. The machine can be equipped with up to 5 punching/welding heads. The machine is equipped with PLC system and an AC Converter (Inverter) that makes the machine adapt its speed automatically with the caps feeder’s production. The “Human/Machine Interface” is a “touch screen” through which all functions and parameters can be displayed accessed and modified. All movements are mechanic (no slow and uncertain pneumatic devices except for few secondary functions not directly related with the main operation).