Two-component liquid dispenser gun and system

A liquid dispenser gun adapted to mix first and second liquid components of a two-component mixture and dispense the two-component mixture on a substrate, the liquid dispenser gun comprising:

• a gun body including a first gun body inlet adapted to receive the first component, a second gun body inlet adapted to receive the second component, and a third gun body inlet adapted to receive a liquid flushing component, the gun body further including a gun body fluid passage in fluid communication with the first gun body inlet, the second gun body inlet, and the third gun body inlet, wherein the gun body fluid passage is a non-linear passage including a downstream segment and an upstream segment such that the first component is introduced into the gun body fluid passage at the downstream segment, the second component is introduced into the gun body fluid passage between the downstream segment and the upstream segment with a laminar flow through the gun body fluid passage toward the downstream segment, and the flushing component is introduced into the gun body fluid passage at the upstream segment and at an angle to the laminar flow of the second component to thereby produce turbulence in the flushing component as the flushing component flows toward the downstream segment;
• a mixing manifold coupled to the gun body and including a mixer passage in fluid communication with the gun body fluid passage and a plurality of mixing elements disposed in the mixer passage;
• and
• a nozzle plate coupled to the mixing manifold and including at least one nozzle with a plurality of liquid outlets, the nozzle plate providing fluid communication between the mixer passage and the at least one nozzle.