Identification of material inclusions in pulp and paper...

Details Identification of material inclusions in pulp and paper... Identification of material inclusions in pulp and paper...

G - Physics

01

N

G01N 33/34 (2006.01) G01N 21/65 (2006.01)

Patent

CA 2464469

Pulp and/or paper samples are scanned with a Laser Raman Spectroscopic probe, utilizing Raman spectroscopic technology, to generate Raman spectroscopic images of all or selected ones of the constituents and/or contaminants contained in the sample, to compare the same with a library of Raman spectroscopic fingerprints of known constituents and/or contaminants, and to identify and communicate data on all or selected ones of the constituents and/or contaminants for purposes of controlling the paper making process and/or determination of the quality of the paper produced.

La présente invention concerne l'utilisation d'une sonde spectroscopique à laser Raman pour ausculter des échantillons de pâte à papier et/ou de papier. En effet, la technique de la spectroscopie Raman permet de produire des images spectroscopiques Raman de l'ensemble ou d'une sélection des impuretés et/ou des constituants contenus dans l'échantillon. On peut ainsi comparer cet échantillon à une bibliothèque d'empreintes caractéristiques de spectroscopie Raman d'impuretés et/ou de constituants connus. On peut également identifier et communiquer des données sur l'ensemble ou une sélection des constituants et/ou des impuretés de façon à contrôler le processus de fabrication du papier et/ou de déterminer la qualité du papier produit.

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