Automatic Four-corner Carton Sealer. After the carton is finished middle top-and-bottom sealing by the front-end sealer, it is rotated by the 90-degree turning mechanism and fed into the corner-edge sealer. When the carton is detected by photoelectric sensor, the pusher plate pushes it into position. The conveyor belt and tape applicator simultaneously seal four top and bottom corners of the carton with high sealing efficiency. Two rows of brushes smooth the tape to attach closely to the carton, achieving wrinkle-free folded corners with beautiful and firm sealing. It is suitable for customers and manufacturers with high requirements on outer packaging, especially for export products and food industry. Widely used in food, pharmaceutical, beverage, tobacco, daily chemical, automobile, cable, electronics and other industries.