PURPOSE: To automatically stack and arrange bag sheet which is excellent in the bendability, and inferior to the self-position holdability by providing a pair of end holding means which wind the bag sheet during the laying and stretching operation of the bag sheet to guide the bag sheet to a laying and stretching passage, and the end of the stacked body of the bag sheets stacked on a receiving surface.

CONSTITUTION: Bag sheets 1 are alternately sorted to the right and left branched carrying passages 2a, 2b in a suspended manner, and fed by a bag sheet sorting and delivering mechanism 10. The bag sheets 1 to be delivered in the suspended manner from the bag sheet sorting and delivering mechanism 10 are decelerated in the stationary suspended condition by a right and left parallel suspending, carrying and stopping mechanism 20. When the bag sheets are laid and stretched on a receiving surface 31a of a bed 31 by the prescribed stroke in Y direction surrounding the upper end on each side edge of the bag sheet 1, the bag sheets 1 are arranged and stacked by a bag sheet arranging and stacking mechanism 30, the bundle of the bag sheets 1 stacked on the receiving surface 31a are held by a pair of end holding mechanisms 35, and the bag sheets are discharged from the stacking zone A to the zone B in X direction by a bag sheet stacking body carrying mechanism 40.