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1. Machine for the packaging of paper rolls with a packaging sheet which wraps the rolls inferiorly, superiorly and in correspondence of two lateral ends, comprising: a station for the entry of the rolls to be packaged and of the packaging sheet, folding means for the upper and lower edges of each packaging sheet around the rolls to be packaged, lateral folding means for folding the packaging sheet on the lateral ends, means for the thermal welding of the packaging sheet at the said folds, handling means for moving the rolls along a predetermined direction, and an exit station for the packages, wherein said lateral folding means comprise a plurality of independent lateral folding devices moved along two horizontal circuits each of which has a forward part along the direction followed by the packages inside the machine and a return part in the opposite direction, wherein said circuits are on opposite sides of the rolls to be packaged, such that the movement of each lateral folding device of each circuit is independent from the movement of the other folding devices of the same circuit and, depending on the packages to be made, more lateral folding devices of a same circuit can be placed side by side to form a contact surface with the packaging film whose extension along said direction is defined by the number of the folding elements arranged side by side.
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