Abstract: Structural front and rear frames, and a rear bulkhead mounted on the rear frame, mount and securely retain a flexible bag as a liner within a freight container, truck trailer or the like, to adapt the container for bulk cargo transport. The front frame retains the front end of the liner bag in generally rectangular configuration and transmits stresses on the bag to structural members of the container, thus supporting the front end of the bag against displacement and possible damage or rupture. The rear frame and a curved bulkhead mounted thereon support the rear end of the bag and similarly prevent its rupture or collapse during loading and tilt-unloading. The laterally curved rear bulkhead also acts as a funnel to completely evacuate the bag contents during tilt-unloading through an opening therethrough. The arrangement is inexpensive and easy to install and, although all of its components may be disposed of after a single use, at least the frame components can be reused.

Abstract: Structural front and rear frames, and a rear bulkhead mounted on the rear frame, mount and securely retain a flexible bag as a liner within a freight container, truck trailer or the like, to adapt the container for bulk cargo transport. The front frame retains the front end of the liner bag in generally rectangular configuration and transmits stresses on the bag to structural members of the container, thus supporting the front end of the bag against displacement and possible damage or rupture. The rear frame and a curved bulkhead mounted thereon support the rear end of the bag and similarly prevent its rupture or collapse during loading and tilt-unloading. The laterally curved rear bulkhead also acts as a funnel to completely evacuate the bag contents during tilt-unloading through an opening therethrough. The arrangement is inexpensive and easy to install and, although all of its components may be disposed of after a single use, at least the frame components can be reused.