.jpg">One of the world’s largest merchandisers of tea manufactures, fills and packages selected tea blends from all over the globe. In a move to enhance their product, the company decided to abandon the use of foil packaging for tea cartons and changeover to other materials to seal in the flavor. Such a change made it necessary to rethink the control concept for the existing packaging and transport system.The operation is large for such processes, spanning some 250 feet and functioning as a link between 20 automatic filling machines and the final packaging station. Before the tea specialties, such as rose hip, peppermint, and chamomile teas, are transported to the final packaging station by the conveyor line, it is necessary to seal the cartons using a carton sealer.While the filling system is operating, cartons are folded and glued in carton aligning stations. The f