Patent ID: 8524327

Claim:
A method of dispensing a liquid adhesive onto a moving substrate comprising the steps of: directing a metered supply liquid adhesive to a liquid spray nozzle having body formed with a liquid adhesive flow passage, a nose portion extending from a downstream end of said nozzle body which defines a liquid adhesive discharge orifice, and an air cap mounted in surrounding relation to said nozzle body and having a central discharge orifice coaxially aligned with said nozzle nose portion and at least partially surrounding to said nozzle nose portion for defining a foaming/atomizing air passageway; controlling the rate of metered supply of liquid adhesive to the spray nozzle proportional to the rate of movement of the substrate; and communicating pressurized air to said foaming/atomizing air passageway for directing pressurized air in surrounding relation to liquid adhesive discharging from said nose portion discharge orifice for atomizing the liquid adhesive into a foam of fine bubbles having an average bubble size of 100 microns or less which is uniformly discharged onto the moving substrate regardless of the speed of the moving substrate within an operating range.