Sealing at broader temperature ranges, with better seal-through contamination helps ensure stronger, more consistent seal integrity on all sides of a package and avoids the weak seal spots that cause leaks. DuPont Packaging offers a wide variety of resin combinations and additives that can withstand broad temperature ranges during production and allow you to achieve better seal integrity despite the presence of liquids, particles or other materials that might interrupt the sealing surface. 

For example, the high melt flow and mechanical toughness of DuPont™ Surlyn® ensures adequate sealing characteristics even amid fat, bones and juices in meat packaging in dry food packaging;  or powders and particles helping to increase productivity with fewer failures at the packaging machine and reduced leakers in store.