THESE SEMI-RIGID LINERS IN POLYETHYLENE WITH LOW DENSITY FOR OPEN-HEAD PLASTIC DRUMS, REALIZED BY A PROCESSING IN A SINGLE BODY, THEREFORE WITHOUT WELDINGS, ARE PREFORMED TO BETTER SUIT THE PARTICULAR SHAPE TO BARREL OF THE CONTAINERS TO PROTECT. THEY ARE AVAILABLE FOR OPEN-HEAD HD-PE DRUMS WITH A CAPACITY OF 60, 120 AND 150 LITERS AND THEY ARE EQUIPPED BY POLYETHYLENE SHEETS FOR THE PROTECTION OF THE DRUM LID. THEY PROTECT THE PACKING AND KEEP IT CLEANED ALLOWING AN EASIER DISPOSAL AFTER THE USE, SO THAT THE ONLY POLLUTED PART TO DISPOSE OF IS THE LINER, THE WEIGHT OF FEW HUNDRED GRAMS.