... , bottom punching , heating , knurling , curling and cup discharge . This kind of cup can be for tea , coffee , milk , ice ... -working station. It produces two-side film-coated paper cup through the procedure of automatic paper feeding , ultrasonic welding ... oil silicon lubrication , bottom punching , heating , knurling , curling and cup discharge . The sealing system is ultrasonic sealer, so this model ...