Applicator for Foamed Flux
Original Publication Date: 1984-Dec-01
Included in the Prior Art Database: 2005-Feb-06
Solder flux can be applied to selected strips of a circuit panel surface by passing the panel over one or more openings through which foamed flux rises into contact with the moving panel. A tank of liquid flux, with isopropyl alcohol as a solvent, is provided with an aerator stone to produce foaming. The tank is covered at the top except for desired openings having a length equal to the width of the panel strips to be fluxed. Panels are conveyed in succession over the openings while the aerator is energized. The panel height above the openings and the aerator energy are adjusted to deposit a thin, uniform coating of flux on the panel. Narrow brushes, with their bristles in contact with the moving panels, limit the lateral flux dispersal to define the edges of each coated strip.