Bag bundle transfer system and bag bundle transfer method

A bag bundle transfer method of transferring a bag bundle from a first movement position toward a second movement position and placing the bag bundle on a placement unit arranged in the second movement position, the bag bundle transfer method comprising the steps of:

• causing a holding device to hold a support part of the bag bundle arranged in the first movement position, the support part being a part of the bag bundle;
• moving the bag bundle from the first movement position toward the second movement position together with the holding device in a state where the support part is held by the holding device;
• causing a movable member to move from a second orientation position to a first orientation position in a state where the support part is held by the holding device before the bag bundle is placed on the placement unit, the movable member being moved from the first movement position toward the second movement position together with the holding device in an integrated manner;
• and
• placing the bag bundle released from the holding device, on the placement unit, wherein:
• the movable member arranged in the first orientation position in a state where the holding device holds the support part supports from below a part of the bag bundle which is located on an end portion side in a first direction from the support part, and
• the movable member arranged in the second orientation position in a state where the holding device holds the support part does not support from below a part of the bag bundle which is located on an end portion side in the first direction from the support part.