Determining the amount of starch

Details Determining the amount of starch Determining the amount of starch

G - Physics

01

N

G01N 21/35 (2006.01) D21H 19/54 (2006.01) D21H 21/16 (2006.01) G01N 33/34 (2006.01)

Patent

CA 2736016

The invention relates to a method and arrangement for determining the amount of starch used in surface-sizing a cellulose product. In the solution according to the invention, the amount of starch is determined with a transmission method utilizing IR spectroscopy by using absorption wavelengths of cellulose. Absorption values are measured before adding a coating and after it, whereby the amount of starch is determined from the difference between these absorption values.

L'invention concerne un procédé et un agencement pour déterminer la quantité d'amidon utilisée dans le traitement superficiel d'un produit de cellulose. Dans la solution selon l'invention, la quantité d'amidon est déterminée avec un procédé de transmission utilisant la spectroscopie IR grâce à des longueurs d'ondes d'absorption de la cellulose. Les valeurs d'absorption sont mesurées avant d'ajouter un revêtement et après, la quantité d'amidon étant déterminée à partir de la différence entre ces valeurs d'absorption.

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