The case sealers with glue seal the upper and lower flaps of the case with hot melt glue. They are therefore equipped with a tank for melting the glue, heated tubes and nozzles for dosing the glue. The higher initial cost compared to a adhesive tape carton closer can be amortized during the year due to the lower cost of consumables. Furthermore, this type of machine does not need to be stopped to replace the tape, ensuring uninterrupted operation