Patent ID: 8196778

Claim:
A process air-assisted dispensing system for dispensing liquid hot melt adhesive streams onto a substrate moving relative to the dispensing system, the dispensing system comprising: a heated liquid manifold; a first dispensing module connected with said heated liquid manifold, a first nozzle connected with said first dispensing module, said first nozzle capable of dispensing a first liquid hot melt adhesive stream onto the substrate and capable of dispensing process air toward the first liquid hot melt adhesive stream dispensed from said first nozzle to impart a motion to the first liquid hot melt adhesive stream; a second dispensing module connected with said liquid manifold and positioned in a side-by-side relationship with said first dispensing module across the width of the dispensing system; a second nozzle connected with said second dispensing module, said second nozzle capable of dispensing a second liquid hot melt adhesive stream onto the substrate and capable of dispensing the process air toward the second liquid hot melt adhesive stream dispensed from said second nozzle to impart a motion to the second liquid hot melt adhesive stream; a heated hot air manifold capable of receiving the process air and coupled in fluid communication with said first and second nozzles; and a control operative to independently adjust a pressure or a flow rate of the process air dispensed by said first nozzle compared to the pressure or the flow rate of the process air dispensed by said second nozzle so that the pressure or the flow rate of the process air dispensed by said first nozzle is different than the pressure or the flow rate of the process air dispensed by said second nozzle.