Many companies have had issues with liners coming out of the bulk bags as they discharge or slipping down into the bags as they are filled. Until the 'Perma' Liner® the best answer was an expensive preformed liner with Tabs taped to it. AmeriGlobe did not believe that that was the best answer. We decided that there had to be a way to attach a gusseted liner firmly to the bulk bag. The 'Perma' Liner® was the result. The 'Perma' Liner® uses circumferential glue lines to attach even a normal gusseted liner to a bulk bag.