Appliance Design - April 2008 - (Page 36)

DECORATION Cla y Glass Fig. 1A. The silver, semi-mirror appearance of LustReflex printed onto PPG Graylite 31. Fig. 1B. The burnished silver appearance of LustReflex printed onto PPG Graylite 31. Fig. 1C. The blue interference color of LustReflex printed onto PPG Graylite 31. Reflective coatings for glass create new design options. F by e. a. “andy” axtell, III and klaus-dieter fritsche Andy Axtel is a scientist IV at Ferro Corp., Washington, Pa., and Klaus-Dieter Fritsche is a senior chemist at Ferro GmbH, Frankfurt am Main, Germany. 36 applianceDESIGN April 2008 or many years, glass coatings have served to brighten and beautify the world. Myriad soft drink and beer bottles have been coated, allowing customers to immediately recognize their favorite brands. Recent building designs are incorporating more coated glass with both color and functional properties. The design of appliances should be no different. New designs and decorating techniques will imbue appliances with novel appearances, allowing consumers new choices when contemplating appliance purchases. Several methods exist for applying coatings to glass substrates. Methods such as screen printing, roll-coating, dip-coating, pad-printing, and curtain-coating are useful for applying glass enamels to glass substrates. The glass enamels can be dried and fired to give permanent, colored coatings to the glass. If screen-printing is used, the decorator has the ability to print any desired pattern on glass by carefully designing the screen pattern. Roll-coating, dip-coating, and curtain-coating allow large areas to be coated in a rapid manner. Reflective coatings can also be applied by several means. Chemical Vapor Deposition (CVD) and plasma coating can be used to deposit thin layers of various coatings such as metals and metal oxides. The layers thus deposited can display both visual and functional properties such as visible and IR light reflecting properties. Unfortunately, CVD and plasma coating techniques generally require high vacuum conditions. Patterning of the coating with these methods is also difficult. To address these challenges, Ferro Corp. has developed a new line of coatings called LustReflex that allow large areas of glass, glass-ceramic and porcelain to be printed with a semi-mirror coating. The coatings do not have to be applied under high vacuum, and the substrate can be fired in conventional decoration heating cycles. These reflective coatings can be printed in a patterned manner limited only by the imagination of the screen-designer. The LustReflex coatings also allow for the application of imitation, brushed stainless-steel coatings in a multistep process. The application of the LustReflex coating www.applianceDESIGN www.applianceDESIGN.com http://www.appliancedesign.com

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Appliance Design - April 2008 Contents Editorial Shipments/Forecasts News Watch A Variant of Thermoacoustic Refrigeration Known as Acoustic-Stirling is Expanding Its Range Outside Cryocooling Into More Conventional Applications Such As Refrigeration and Air Conditioning Free-Piston, Stirling Coolers Are Now Showing Up in Mainstream Applications As Costs Come Down and Heat Transport Solutions Are Devised Heat Exchanger Innovations Are Helping To Improve the Overall Efficiency of Vapor Compression Systems Environmental Concerns Have Once Again Ignited a Debate Over Refrigerants A New Glass Ceramic Material for Induction Cooktops Can Be Decorated In a Variety of Glimmering Metallic, 3-D Looks That Can Employ a Number of Shades, Patterns, Styles, Colors, Intensities, and Textures Colorful, Reflective Coatings for Glass Create a Variety of Design Options To Help Designers Establish a Unique Look for Their Products Appliance Designers Faced With Different Motor and Drive Options Need To Understand the Differences and Tradeoffs Before Choosing A New MEMS Valve Offers a Number of Advantages Over Solenoids In Certain Applications, Including the Opportunity To Cut Energy Use The AHR Expo Set Attendance Records and Showcased Thousands of Innovative New Products Classifieds Design Marts Advertiser’s Index Association Report: CEA

Appliance Design - April 2008

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