Method and apparatus for measuring properties of a moving web
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United States of America Patent
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Aug 29, 2000
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N/A
app pub date -
Jul 16, 1998
filing date -
Jul 16, 1998
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Abstract
The invention relates to a method and apparatus for measuring properties of a moving web. A stimulus is directed onto the moving web by an excitation element and the effect of the web on the stimulus is measured with a detection element. At the measuring point the web is supported by a measurement support sheet. The measurement support sheet comprises at least two regions having different but known responsiveness to one or more forms of stimulus or causing different but known transformation to one or more forms of stimulus.
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