Method and device for measuring the amount of coating on a moving substrate
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United States of America Patent
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app pub date -
Oct 29, 2002
filing date -
Feb 12, 1998
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Abandoned
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Abstract
The invention relates to a method and a device for measuring the amount of coating on a moving substrate. Reflection measurement is used in the invention for measuring the properties of a coating. The amount of calcium carbonate in the coating is measured by measuring an absorption peak of calcium carbonate at a wavelength of about 3.95 micrometers and/or the amount of kaolin is measured by measuring an absorption peak of kaolin at a wavelength of about 2.7 micrometers.
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