The RPB-05 heavy duty case sealer is designed to seal heavy cartons and cases effectively. Thanks to top and bottom drive belts, even heavy cases can be efficiently passed to the next step of packaging. The carton sealing machine is made of robust parts, which enable stable performance. Parameters should be changed manually to make the case sealing machine applicable for different sizes of cases. User's convenience is considered throughout the design and production of this case sealing machine, so that operator can use this case sealer without professional training, thus preventing costly production downtimes while enhancing productivity.