Method and apparatus for applying thin coatings of fluid droplets
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United States of America Patent
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May 24, 1994
Issued Date -
N/A
app pub date -
Oct 4, 1993
filing date -
Apr 20, 1992
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method and apparatus for applying thin coatings of fluid droplets to an adjacent surface includes a pickup roll rotating in a supply of fluid and a rapidly rotating brush roll having a surface formed by bristles thereon. The two rolls rotate with an interference between them whereupon the bristles are bent as the tips thereof pick up a droplet of fluid. After passing out of inteference, the bristles snap forwardly and project the droplets in a mist form against the adjacent surface. The spray pattern is maintained with uniformity in both a cross-machine direction and a machine- direction by a windage control device which may incorporate, selectively, a spray-doctor, a knife doctor blade, windage control mechanism including end-cavity windage dams, spacers, brush windage knife, mist eliminator, brush end rings, seals and spacers.
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