A holding region (41) includes opposite skirt portions in a revolution direction of a holding pad (40) each of which has at least opposite ends in a specific direction that extend along a first curve (P1) when the holding pad (40) is at a first revolution position (E1). The holding region (41) includes a second area bearing on at least part of one side portion and at least part of the other side portion in a revolution direction of the holding pad (40) when the holding pad (40) is at a second revolution position (E2) that extends along a second curve (P2). A delivery side holding region (69) includes opposite side portions in the specific direction each of which has at least opposite ends in a rotational direction, each end being formed with a first recess (62a, 62a). The first recess (62a, 62a) having a bottom surface that extends along an arc of the first curve (P1).
