a method of securing a flexible plastics liner within a cargo container uses a plurality of plastic retaining cords . each cord is either attached to the liner at a suitable position , or is passed through a loop or other receptor secured to the liner . each cord has a self - jamming cleat secured at or adjacent one end , to permit the cord to be coupled to a member provided within the container and then tensioned so as to suspend the liner therewithin . the cord may be passed through a hole in the member or a loop may be formed around the member or .