Abstract: Apparatus for producing a wrapper closed by a weld seam from a plastics bag open at one side, for balls of yarn or the like, wherein the balls are insertable from a collecting duct into the uppermost bag of a stack of bags arranged in a magazine and the bag opening is closable by means of a welding device after the formation of lateral folds by means of two folder members, wherein the collecting duct is movable at least partly into the stationarily held bag and the welding device is reciprocable between an operative position and an inoperative position, and wherein the magazine which is located in the displacement path of the welding device together with the remainder of the stack located thereon may be tilted out of this path in the operative position of the welding device.