| abstract |
A filter-manufacturing machine comprises spray nozzlesnlocated on both sides of a feeding path of sheet materialnmade of filter fibers, respectively, and the spray nozzlesneach have a line of spray holes of a liquid binder withnhigh viscosity and a plurality of air jetting openings fornjetting compressed air. The liquid binder sprayed from thenlines of the spray holes is subdivided into particles bynthe compressed air, thereby spraying the particles of thenliquid binder evenly on both surfaces of the sheet material. |