Apparatus and method for determining the integrity of coated...

Details Apparatus and method for determining the integrity of coated... Apparatus and method for determining the integrity of coated...

G - Physics

01

N

G01N 21/88 (2006.01) D21H 23/78 (2006.01) G01N 21/49 (2006.01) G01N 29/28 (2006.01) G01N 33/34 (2006.01)

Patent

CA 2122319

Described is apparatus and a method for measuring the integrity of coated paper, which apparatus comprises, a reservoir for a test liquid, e.g., water, retaining means for holding a sample of coated paper which is in liquid communication with the test liquid reservoir, means for applying ultrasonic energy to the sample of coated paper, photoelectric means for continuously measuring the turbidity of the test liquid, the photoelectric means being in liquid communication with the test liquid reservoir and the paper sample, recording means electrically connected to the photoelectric means for continuously recording the turbidity measurements, and means, including pumping means, for circulating test liquid between the reservoir, photoelectric means and paper sample retaining device.

L'invention porte sur une méthode et un appareil de mesure de l'intégrité de papier enduit. L'appareil comprend un réservoir de stockage d'un liquide d'essai, par exemple de l'eau; un dispositif de retenue pour tenir un échantillon de papier enduit, ce dispositif étant en communication fluide avec le réservoir de liquide d'essai; un dispositif d'application sur l'échantillon de papier d'une forme d'énergie constituée d'ultrasons; un dispositif photoélectrique servant à mesurer continuellement la turbidité du liquide d'essai, ce dispositif étant en communication fluide avec le réservoir de liquide d'essai et l'échantillon de papier; un dispositif d'enregistrement relié électriquement au dispositif photoélectrique afin d'enregistrer en continu les lectures de la turbidité; et un dispositif, notamment un dispositif de pompage, qui assure l'acheminement du liquide d'essai entre le réservoir, le dispositif photoélectrique et le dispositif de retenue de l'échantillon de papier.

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