Refining element
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United States of America Patent
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-
Mar 28, 2000
Grant Date -
N/A
app pub date -
Jun 17, 1998
filing date -
Dec 21, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Refining elements are disclosed for use in refiners in which the refining elements comprise a refining surface with a plurality of raised bars alternating with a plurality of grooves. The raised bars at the inlet of the refining path have a first spacing and form a first angle with respect to a radius or generatrix defining the refining path and the plurality of raised bars at the outlet of the refining path have a second spacing and form a second angle with respect to the radius or generatrix, the first angle being between about 50.degree. and 85.degree. and the second angle being between about -25.degree. and +25.degree., and the first spacing being greater than the second spacing.
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