Process and apparatus for forming particulate layers
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United States of America Patent
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-
Jul 31, 1990
Grant Date -
N/A
app pub date -
May 25, 1988
filing date -
May 28, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A layer of particulate material is formed by forming a foamed dispersion of a particulate material, supplying the foamed dispersion to a predetermined zone of a plane through which a foraminous element is moving, applying a vacuum to said plane across the zone on the other side of the foraminous element, so as to drain foam and form a particulate layer thereon, removing any free air from the drained foam, and continuously recycling the resulting foam for re-use in forming the foamed particulate dispersion. An apparatus is provided for carrying out the process.
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