An apparatus for opening sealed packaging, including three parts, a pouring nozzle having a flange, a cylindrical cutting element and a screwcap. The sheet conveying apparatus has a first roller which feeds sheets at predetermined sheet intervals, and a second roller which conveys a plurality of sheet fed from the first roller. A second camera may be used to view at least a portion of the first component andor at least a portion of the second component using visible light. A monitor unit monitors the level of the optical signal and outputs a monitor signal.