Method and apparatus for measuring properties of paper
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United States of America Patent
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Dec 17, 2002
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N/A
app pub date -
Mar 14, 2000
filing date -
Sep 15, 1997
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Abstract
The invention relates to a method and an apparatus for measuring the properties of paper from a moving paper web in a paper machine. An infrared beam is directed to the paper web. The infrared beam, passed through or reflected from the paper web, is split into wavelength components with a spectrograph, and signals of the different wavelength components are measured, and the properties of paper are determined on the basis of the signals.
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