Coating processes – Measuring – testing – or indicating
Patent
1997-09-11
2000-02-22
Beck, Shrive
Coating processes
Measuring, testing, or indicating
427421, 738659, B05D 102
Patent
active
060277599
ABSTRACT:
A method and apparatus for evaluating a paint filter. The apparatus includes a duct, air supply, spray gun, target, filter holder and particle sensing device. The spray gun and target are disposed within the duct to simulate actual paint spraying conditions, including production of overspray. The filter holder maintains a test filter downstream of the target such that overspray interacts with the test filter. The particle sampling device is associated with the filter holder and is configured to sense and provide information indicative of paint filter efficiency and preferably includes a time-of-flight particle measurement instrument. During use, the spray gun sprays paint particles at the target. Overspray from the target interacts with the test filter. The particle sampling device senses data upstream and downstream of the filter, from which a filter evaluation is made.
REFERENCES:
patent: 5356334 (1994-10-01), Gray
patent: 5561515 (1996-10-01), Hairston et al.
patent: 5743958 (1998-04-01), Shutic
Method 319: Determination of Filtration Efficiency for Paint Overspray Arrestors, 61 Federal Register 55862, pp. 55862-55869, Oct. 26, 1996.
Kwok Kui-Chiu
Vatine Ali Reza
Beck Shrive
Calcagni Jennifer
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