Barrier materials useful for packaging

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C - Chemistry, Metallurgy

23

C

117/157, 117/236

C23C 14/10 (2006.01) B32B 17/10 (2006.01) C08J 7/06 (2006.01) C23C 14/20 (2006.01)

Patent

CA 2040638

TITLE FILM COATED WITH GLASS BARRIER LAYER WITH METAL DOPANT ABSTRACT Improvements to silicon oxide coatings on polymeric substrates are disclosed, which provide improved barrier properties. One improvement involves doping an SiO2 coating with one or more of certain metals. Another improvement involves first, forming an SiO coating on the substrate, followed by an SiO2 coating. Another improvement involves the combination of the SiO/SiO2 coatings plus the incorporation of certain metal dopant into the SiO2 layer.

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