A cutter apparatus for cutting a workpiece of an absorbent article that is being transported in a transport direction, comprising, a cutter roller that has a cutter blade projecting from an outer circumfer-ential surface of the cutter roller; an anvil roller that receives the cutter blade on an outer circumferential surface of the anvil roller disposed to face the outer circumferential surface of the cutter roller, the cutter roller and the anvil roller cutting the workpiece by allow-ing the workpiece to pass between the cutter roller and the anvil roller while the cutter roller and the anvil roller are both rotating in the transport direction; and the cutter roller and the anvil roller are arranged vertically, characterized in that a hole is provided as a dynamic-balance correction section that, for at least one roller of the cutter roller and the anvil roller, corrects the dynamic balance of the at least one roller so that a sum of values of balance quality at one end and another end of the at least one roller in a rotational-axis direction is 6 or less, the balance quality (mm/sec) being defined in JIS B 0905, a rotational direction in which the cutter roller rotates about its rotational axis is opposite to a rotational direction in which the anvil roller rotates about its rotational axis, both the cutter roller and the anvil roller have their respective predetermined reference positions facing each other on their respective outer circumferential surfaces, positions on each of the cutter roller and the anvil roller along their respective rotational direction corresponds to 0° to 360° rotational-angular positions from their respective start positions which are the predetermined reference positions, wherein in use when cutting the workpiece by allowing the workpiece to pass between the cutter roller and the anvil roller, the cutter roller and the anvil roller are rotated so that their rotational-angular positions match with each other, the values of the balance quality at the one end and the other end are calculated based on residual unbalance amounts measured using a two-plane balancing machine defined in JIS B 7737, and assuming that the one of the cutter roller and the anvil roller is a first roller and the other roller is a second roller, both an unbalance position related to the residual unbalance amount at one end of the first roller and an unbalance position related to the residual un-balance amount at the other end of the first roller fall within a range of 90° to 270° rotational-angular positions, and both an unbalance position related to the residual unbalance amount at one end of the second roller and an unbalance position related to the residual unbalance amount at the other end of the second roller fall within a range of 270° to 360° or 0° to 90° rotational-angular positions.. a cutter roller that has a cutter blade projecting from an outer circumfer-ential surface of the cutter roller; an anvil roller that receives the cutter blade on an outer circumferential surface of the anvil roller disposed to face the outer circumferential surface of the cutter roller, the cutter roller and the anvil roller cutting the workpiece by allow-ing the workpiece to pass between the cutter roller and the anvil roller while the cutter roller and the anvil roller are both rotating in the transport direction; and the cutter roller and the anvil roller are arranged vertically, characterized in that a hole is provided as a dynamic-balance correction section that, for at least one roller of the cutter roller and the anvil roller, corrects the dynamic balance of the at least one roller so that a sum of values of balance quality at one end and another end of the at least one roller in a rotational-axis direction is 6 or less, the balance quality (mm/sec) being defined in JIS B 0905, a rotational direction in which the cutter roller rotates about its rotational axis is opposite to a rotational direction in which the anvil roller rotates about its rotational axis, both the cutter roller and the anvil roller have their respective predetermined reference positions facing each other on their respective outer circumferential surfaces, positions on each of the cutter roller and the anvil roller along their respective rotational direction corresponds to 0° to 360° rotational-angular positions from their respective start positions which are the predetermined reference positions, wherein in use when cutting the workpiece by allowing the workpiece to pass between the cutter roller and the anvil roller, the cutter roller and the anvil roller are rotated so that their rotational-angular positions match with each other, the values of the balance quality at the one end and the other end are calculated based on residual unbalance amounts measured using a two-plane balancing machine defined in JIS B 7737, and assuming that the one of the cutter roller and the anvil roller is a first roller and the other roller is a second roller, both an unbalance position related to the residual unbalance amount at one end of the first roller and an unbalance position related to the residual un-balance amount at the other end of the first roller fall within a range of 90° to 270° rotational-angular positions, and both an unbalance position related to the residual unbalance amount at one end of the second roller and an unbalance position related to the residual unbalance amount at the other end of the second roller fall within a range of 270° to 360° or 0° to 90° rotational-angular positions..