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FLEXO Magazine : September 2009
74 FLEXO SEPTEMBER 2009 www.flexography.org TECHNOLOGIES & TECHNIQUES The majority of the mirror-like, high-brilliance silver-color finishes are being done with vacuum-metallized films, metallized film lamination to paperboards (also know as foil-laminated boards or foil board) or foil-transferring processes (hot foil stamp and cold foil transfer). The result- ing packaging and display materials from these three main routes are brilliant, eye-catching and serve the purpose of shelf appeal to the consumer. Besides their visual effect, some metallized packages also provide additional barrier properties and anti-counterfeit brand security functions. However, from the sustainable packaging perspective, these conventional options create a significant amount of processing waste or create waste that is very difficult to recycle. In the wake of the sustainable packaging move- ment, UV-curable metallic coatings provide an alternative in-line foil solution with excellent metallic effects, minimum or no capital investment, and cost-effective economics. A Greener Metal Sustainable Packaging with Foil-Like UV Curable Coatings By Dennis Drummond and Dr. Albert Lin FIGURE 2. A color selection guide for use with metallic coatings. • The newest type of innovation in metallics is a a single component, 100-percent solid, UV-curable, silver-color coating. • A foil-like silver coating is pattern applied in the front-end coater, followed by the desired color se- quence. • In some cases, changes in color separation might be advised to maintain the intended visual effect.