Coating processes – Rumbling or tumbling
Patent
1997-08-19
1999-06-22
Simmons, David A.
Coating processes
Rumbling or tumbling
427421, 118302, 118308, 118418, 134 33, 239110, B05D 102, B05B 716, B05C 300
Patent
active
059141530
ABSTRACT:
A resin application apparatus used in the production of oriented strand board has a rotary atomizer supported within a drum for containing and tumbling wood flakes. A spinning cup is rotatably supported by a housing of the atomizer, with a gap formed between an outer surface of the cup and the housing. A supply line provides resin to the spinning cup for atomization thereof and coating of the tumbling wood flakes. A passageway is formed in the housing terminating in an outlet proximate the spinning cup. Solvent is flowed through the passageway and out of the outlet, sweeping away any accumulated material in the gap and on the spinning cup and housing. The cleaning operation is performed simultaneous with the flow and atomization of the resin, whereby the resin application process continues without interruption.
REFERENCES:
patent: 3749315 (1973-07-01), Crathern
patent: 4214708 (1980-07-01), Lacchia
patent: 4275838 (1981-06-01), Fangmeyer
patent: 4380321 (1983-04-01), Culbertson et al.
patent: 4505430 (1985-03-01), Rodgers et al.
patent: 4887770 (1989-12-01), Wacker et al.
patent: 5358182 (1994-10-01), Cappeau et al.
Jones, III Richard T.
Shaw Robert C.
Swink Miles Glenn
Georgia-Pacific Corporation
Padgett Calvin
Simmons David A.
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