Abstract: A flexible bulk container for the handling and storage of flowable materials having structural maintenance means attached to the inside surfaces of the container for providing structural support to the walls which comprise the container. The container is comprised of a plurality of walls attached together and defining an enclosure having a bottom and a top panel attached to the encircling enclosure. Several embodiments of the structural maintenance means are enclosed, the first one comprising a loops and rope combination attached to the inner surfaces of the flexible container. Loops are attached to each side of the flexible container on the inside surface at a plurality of levels. A rope is threaded through the loops on each level and its ends are attached. The rope is drawn through and adjusted in size so that it holds the container walls in a substantially vertical orientation.

Abstract: A stackable flexible bulk container includes a bag portion of woven polypropylene and is comprised of a bottom wall, a top wall and an encircling side wall. At least two lifting strap loops are provided so that the container can be lifted by the tongs of a forklift truck. To enable the tongs to enter the loops without manual assistance, relatively rigid devices are associated with the ends of the loops to hold them upright and opened. The loops are also held outwardly away from the center of the bag so that similar containers can be stacked without interfering with the loops of the container below.