Method to move containers in a line for processing said containers, and corresponding processing line

Method to move containers in a processing line that comprises a station for storing and picking up said containers and a station at least for filling said containers, said method providing, in said storage and pick-up station, to:

• supply a container-holding tray containing a plurality of said containers disposed resting in an orderly manner, according to a pattern defined by a positioning matrix, on said container-holding tray with their mouth facing toward a bottom wall of said container-holding tray,
• upend said containers disposed in said container-holding tray by means of upending means comprising an upending tray configured to couple with said container-holding tray so as to engage, according to said pattern defined by said positioning matrix, at least one part of said containers, said upended containers being supported at the bottom by said upending tray,
• said method being characterized in that it also provides to move, with respect to said upending tray, extraction means to pick up, from said upending tray, at least two containers disposed in two parallel and consecutive rows of said positioning matrix, of which a first container said at least two containers is positioned in a first row (I) and a second container of said at least two containers is positioned in a second row (II), wherein said extraction means are moved in a pick-up direction on a substantially horizontal plane, so that the extraction means first encounter the first container to be picked up and then the second container to be picked up, which is therefore further downstream, when said extraction means move toward the container-holding tray in the pick-up direction, and subsequently to move said at least two containers picked up with said extraction means toward said at least filling station.