Abstract: A device for folding the edge of a wrapping material wound around a roll against the end of the roll. The device comprises an endless rotating means, such as a chain or a belt, at least one wheel member around which the rotating means is arranged to rotate. Pressing means pivotably attached to the endless rotating means for pressing said edge against the end of the roll when the rotating means is rotated from the circumference of the roll towards the center thereof, and driving means for driving the rotating means characterized in that the pressing means to the rotating means are such that the pressing means when in contact with the end of the roll pivot about an axis parallel with the axis of rotation of the roll (7) to an angle determined by the circumferential velocity of the roll (7) and the speed of movement of the rotating means (1).