Patent ID: 6027759
Filing Date: 2000-02-22
Classification: B01D,B05B

Abstract:
A method of evaluating fractional efficiency of a filter intended to filter particles of paint, the method including:simulating a spray painting process, including providing a spray gun and producing a spray of a paint, positioning a target downstream of the spray gun, wherein the target is configured to retain at least a portion of paint particles generated from the spray gun, and allow a remaining portion of the particles to flow toward a paint filter placed downstream of the target as overspray, wherein the overspray is comprised of the particles of paint intended to be filtered and the filter is positioned to interact with the overspray;sensing a first parameter relating to particle concentration or size at a point upstream of the paint filter;sensing a second parameter relating to particle concentration or size at a point downstream of the paint filter; andcorrelating the first parameter with the second parameter to determine fractional efficiency of the paint filter.