A deep-drawing packaging machine includes a sealing device that clamps and seals a top film and a bottom film by an upper mold and a lower mold, clamping tabs that clamp both-side edges of at least one of the top film and the bottom film, and a carrying device that carries at least one of the top film and the bottom film clamped by the clamping tabs. The clamping tabs are configured such that a gap is generated between the clamping tabs and the top film and the bottom film, positioned in a range clamped by the upper mold and the lower mold, when the upper mold and the lower mold of the sealing device are closed.

An electrode stacking apparatus provided with a planar motor device (B) comprised of a flat plate-shaped stator (50) and a plurality of movers (40) able to move on a flat surface (51) of the stator in any direction along the flat surface (51) and able to rotate about a perpendicular axis of the flat surface (51) in a state magnetically floating from the flat surface (51). When stacking a new sheet-shaped electrode (1) held by an electrode conveyor device (A) arranged above the planar motor device (B) on a stacked electrode holder (60) of a mover (40), the mover (40) is made to move in synchronization with movement of the new sheet-shaped electrode (1) so that the new sheet-shaped electrode (1) continues to face the sheet-shaped electrode stacking position on the stacked electrode holder (60).