exponent 2 features a combination of rollprints awardwinning clearfoil and a coextruded noncrystalline polyester sealant. the material targets pharmaceutical and other chemicallysensitive applications which require exceptional barrier and clarity. exponent 2 offers improved sealing characteristics over barex due to easiertocreate hermetic seals and improved line speeds.when compared to traditional foilbased highbarrier structures, exponent 2s reduced number of layers and gauge offer costsavings and create an improved environmental profile for a wide variety of pharmaceutical products. exponent 2 has been engineered to provide a chemically neutral, ultrahigh oxygen and water vapor barrier with chemical resistance. sourcehttpwww.rollprint.comproductsclearfoil.asp