Abstract: In a device for double folding leaves, the device is provided with two conveyor belts that are located against one another such that leaves can be clasped between the conveyor belts with the exception of a strip that protrudes between the conveyor belts, whereby the conveyor belts are aligned with respect to one another along the side of the strip and with two or more folding elements along the conveyor belts that can fold the aforementioned strip, whereby the device. is equipped such that leaves are guided with their strip alongside the folding elements by the driving of the conveyor belts, whereby at least one folding element folds the strip in one direction and at least one folding element folds the strip in the other direction.