Clear Barrier at Atmospheric Pressure, 2006 PLACE Conference



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The barrier properties of transparent layers deposited on flexible plastic substrates are of interest to many in the packaging industry. Numerous methods have been used to manufacture transparent barrier coatings with varying degrees of success to address evolving environmental laws requiring the reduction or elimination of volatile organic compounds (VOCs), which are the byproduct of curing liquid topcoats. This paper will present evidence of the potential for clear barrier at atmospheric pressure through the use of PECVD of various precursors, either alone or as an integral step in a composite process for plasma polymerization. XPS analysis of polymerized film showed presence of silicon, carbon and oxygen in ratios different from the monomer, and in fact approaching a Si:O atomic ratio of 1:2 confirming cross linking effects, and the plasma polymerized organo-silicon films displayed good functional barrier properties without the environmental concerns of VOCs.

Author: Rory A. Wolf and Rick Elwanger
Clear Barrier at Atmospheric Pressure
Clear Barrier at Atmospheric Pressure, 2006 PLACE Conference
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