Method and apparatus for painting the surfaces of wood chips
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United States of America Patent
Stats
-
Oct 25, 1994
Grant Date -
N/A
app pub date -
Mar 31, 1993
filing date -
Mar 31, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The surfaces of masses of wood chips are painted to pre-selected colors by conveying the chips along an elongated path in an auger-type screw conveyor and, simultaneously, spraying predetermined amounts of a liquid colorant or paint, upon the mass of moving chips. The rotating screw is arranged within a U-shaped, in cross-section, trough. The conveyor is divided into a closed paint application zone, within which the paint is sprayed upon the moving mass of chips, and a following paint spreading and paint drying zone, in which the trough is open to the atmosphere to allow air circulation and evaporation to enhance the drying process of the paint. The paint is spread upon the surfaces of the chips by the autogenous action of the tumbling chips contacting and rubbing against each other as they are conveyed along the path from the feed end of the screw to the discharge end thereof. The paint is sprayed into the mass of chips at separated locations along the length of the first zone and the total amount of paint applied is correlated to the amount needed for covering the surfaces of the wood chips without substantially soaking beneath the surfaces of the chips to avoid saturating the chips.
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Cited Art Landscape
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