Method and device for measuring the amount of coating on a...

Details Method and device for measuring the amount of coating on a... Method and device for measuring the amount of coating on a...

G - Physics

01

N

G01N 21/35 (2006.01) G01N 21/86 (2006.01)

Patent

CA 2320941

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 (4a). 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.

L'invention concerne un procédé et un dispositif de mesure de la quantité de revêtement sur un substrat en mouvement. Dans cette invention, on utilise la mesure par réflexion pour mesurer les propriétés d'un revêtement (4a). On mesure la quantité de carbonate de calcium dans le revêtement en mesurant une crête d'absorption du carbonate de calcium à une longueur d'onde d'environ 3,95 micromètres et/ou on mesure la quantité de kaolin en mesurant une crête d'absorption du kaolin à une longueur d'onde d'environ 2,7 micromètres.

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