In the conventional method, when a sheet-like object F to be packaged is packaged, a device for pushing the object in the bag in the direction of the bottom of the bag, a device for tapping the bottom of the bag, and the like are required, and equipment costs are increased. The present invention relates to a bag storage device (1) comprising a bag stock mechanism (2), a bag removal mechanism (3), a bag turning mechanism (5) for turning a bag (W), a bag conveying mechanism (7) for supplying the turned bag (W) to downstream equipment, The bag turning mechanism 5 is provided with a turning suction cup 52 a for sucking the bag W and turning it around the axis, The rotating suction cup 52 a sucks a position displaced from the center P of the bag W to the bag mouth of the bag W to rotate the...

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