Method for the application of a filter on a web
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United States of America Patent
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Dec 4, 2012
Grant Date -
Apr 7, 2011
app pub date -
Dec 9, 2010
filing date -
Mar 1, 2004
priority date (Note) -
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Abstract
A Fabry-Perot filter is applied as a thin coating on a film, for example, a packaging film, and permits interesting color effects. The coating has a layered construction in which both reflecting layers of the filter may be made of aluminum and the intermediate layer between the reflecting layers may be made of aluminum oxide.
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