Since 1990's the Nanoparticulates have shown promise in coating formulations and recently have shown exciting properties when made into barrier formulations. In packaging applications, they most notably improved barrier to gases, aroma and UV light. One of the more interesting applications has been in providing oxygen barrier coatings for packaging. Early problems with instabilities and poor coverage have been for the most part eliminated with improved formulations and press techniques. Functional oxygen barriers of less than .006 cm~3/100 inch~2 over 24 hours at 23° C and 50% RH on polyester are now routine.
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