Patent ID: 11629029

Abstract:
A folding, or interfolding, unit, for folding, or interfolding, a first and a second plurality of sheets of paper in a machine for converting paper, comprises a first and a second folding, or interfolding, counter-rotating rolls configured to rotate about a respective longitudinal rotational axis and providing a plurality of suction holes. A vacuum generation device and a vacuum distribution device are, furthermore, provided for selectively putting into pneumatic communication the vacuum generation device with at least a row of the aforementioned suction holes. The folding, or interfolding, unit, comprises, furthermore, a first and a second cutting device providing, respectively, at least a first and a second cutting blade which cooperates with a first and a second plurality of counter-blades distributed along the folding, or interfolding rolls in order to cut a first and a second web of paper, in the first and in the second plurality of sheets.