A conveyor comprising: a supply roll on which a belt-shaped cell material is wound, the cell material being the material for an electrode (20 or 30) or a separator; a corrective holding part for conveyably holding the cell material fed out from the supply roll while bending one surface of the cell material that lies against the outer peripheral side of the supply roll into a concave shape; and another holding part for conveyably holding the cell material while bending the other side of the cell material, which is different from the one side, into a concave shape; the radius of curvature of the surface of the corrective holding part that is in contact with the cell material being less than the radius of curvature of the surface of the other holding part that is in contact with the cell material; characterized by: draw-out means for drawing out the cell material from the supply roll by pulling the cell material; and processing means in the cutting section for processing the cell material, comprising cutting means, the processing means in the cutting section being provided farther downstream in the cell material conveying direction than the draw-out means; and the corrective holding part being provided between the draw-out means for drawing out the cell material and the processing means in the cutting section. a supply roll on which a belt-shaped cell material is wound, the cell material being the material for an electrode (20 or 30) or a separator; a corrective holding part for conveyably holding the cell material fed out from the supply roll while bending one surface of the cell material that lies against the outer peripheral side of the supply roll into a concave shape; and another holding part for conveyably holding the cell material while bending the other side of the cell material, which is different from the one side, into a concave shape; the radius of curvature of the surface of the corrective holding part that is in contact with the cell material being less than the radius of curvature of the surface of the other holding part that is in contact with the cell material; a corrective holding part for conveyably holding the cell material fed out from the supply roll while bending one surface of the cell material that lies against the outer peripheral side of the supply roll into a concave shape; and another holding part for conveyably holding the cell material while bending the other side of the cell material, which is different from the one side, into a concave shape; the radius of curvature of the surface of the corrective holding part that is in contact with the cell material being less than the radius of curvature of the surface of the other holding part that is in contact with the cell material; characterized by: draw-out means for drawing out the cell material from the supply roll by pulling the cell material; and processing means in the cutting section for processing the cell material, comprising cutting means, the processing means in the cutting section being provided farther downstream in the cell material conveying direction than the draw-out means; and the corrective holding part being provided between the draw-out means for drawing out the cell material and the processing means in the cutting section. draw-out means for drawing out the cell material from the supply roll by pulling the cell material; and processing means in the cutting section for processing the cell material, comprising cutting means, the processing means in the cutting section being provided farther downstream in the cell material conveying direction than the draw-out means; and the corrective holding part being provided between the draw-out means for drawing out the cell material and the processing means in the cutting section.