these polyurethane blends, they are also used as a coating for the interior of boats HMW/UHMW Medium to heavy duty poly dump bedliners Super heavy duty UHMW asphalt liner The “most versatile” dump bedliner can handle hot asphalt one day and rock/concrete the next, maximizing the usage of your dump equipment and lowering maintenance costs. Heavy duty UHMW liner “Heavy Duty” dump body bedliners allow for low scope dumping, less sticking and freezing while protecting the bed from heavy, abrasive loads in steel and aluminum dump bodies and trailers. Origin of the polyurethane liner It was created in 1983, by American Made Liner Systems, now a division of American Made Systems, Inc. Purpose of the original dump bedliner Permanent protection for dump bodies Lower scope dumping reduces chances of roll-over Less sticking and freezing of loads Higher profits with less carry-backs and more hauls per day References Trucks