Patent ID: 8122692

Claim:
An empty bag supply method that separates and feeds out an empty bag that is uppermost of a group of empty bags stacked on a conveyor in such a format that bag bottoms of the empty bags face forward and upper bags are shifted forward, feeds the empty bag forward so that the empty bag comes into contact with a first positioning stopper thus being positioned by a bag bottom thereof, then transports the empty bag along a predetermined bag transportation path, and then transfers the empty bag to a gripper of a bag packaging apparatus; said empty bag supply method comprising the steps of: changing an attitude of the empty bag being positioned by the bag bottom, so that the empty bag is brought substantially vertical with the bag bottom facing upward, transporting the empty bag with a bag mouth thereof facing forward and bringing the bag mouth into contact with a second positioning stopper, thus positioning the empty bag by the bag mouth, changing the attitude of the empty bag being positioned by the bag mouth, so that the empty bag takes a substantially vertical attitude with the bag mouth facing upward, and transferring the empty bag to said gripper of said bag packaging apparatus.