Multilayer Barrier Coating for Reducing Gas & Moisture Transport An Ultra-thin & Optically Transparent Barrier Coating Solution GVD's Multilayer Barrier coating provides increased level of protection against corrosion or contamination, by serving as a universal barrier against the ingress of gases (e.g. oxygen, water vapor, hydrogen, acids) and liquids. The coating can provide similar water vapor and oxygen transport reductions as metallized films with much higher optical transparency, to a variety of flexible and rigid substrates. - High performing gas transport barrier with no added mass and minimal added thickness (<2 microns). Superior to parylene and comparable to metallized polymer film. - Suitable for delicate substrates and flexible substrates - Optically transparent down to 200 nm. - Barrier performance achieved with minimal thickness (2 microns or less) and fully conformal. Competitive Comparison Coating Type Property - Water vapor transmission rate (85% humidity) - Oxygen transmission rate - UV transmission 350 nm - Conformality GVD Barrier (2 microns) - 0.38 g /m 2/day - 1.8cc/m 2/day - 90% Parylene - 0.75 g /m 2/day (Parylene C @ 25 microns) - 110 cc /m 2/day (Parylene C @ 25 microns) - 50% (Parylene N/C) - (Parylene N/C) Metallized PET - 0.75 g /m 2/day 0.1 g /m 2/day - 0.9 cc/m 2/day - <5% - Not possible Multilayer Barrier Coating can be Utilized in: Food Packaging Flexible Electronics Thin-film Solar Cells Printed Circuit Boards Parts That Would be Damaged by Excessive Moisture The coating system is likely to be stable up to 200 degrees C. Substrate temperatures are maintained near room temperature during the coating process.
