Aerosol dispenser and nozzle with reduced drip

A spray dispenser comprising:

• a container comprising a first end portion, a second end portion, and a sidewall extending between the first end portion and the second end portion, the container defining an interior for containing a composition and a compressed gas propellant, wherein the first end portion comprises a neck defining an opening;
• a valve body disposed at least partially within the opening of the container, the valve body comprising an inner passageway in fluid communication with the container;
• a valve stem extending through the inner passageway, the valve stem having a valve stem channel, the valve stem being movable from a closed position to a fully open position, wherein in the closed position the valve stem channel is not in fluid communication with the interior of the container, and wherein in the fully open position the valve stem channel is in fluid communication with the interior of the container;
• a supply channel in fluid communication with the valve stem, wherein the supply channel defines a supply channel length LSC measured along a central axis fluid flow through the supply channel, wherein the supply channel length LSC is greater than 23 mm;
• an actuator in operative communication with the valve stem, wherein the actuator is movable from resting position to a fully actuated position, wherein in the resting position the valve stem is in the closed position, and wherein in the fully actuated position the valve stem is in the fully open position;
• and
• a nozzle in fluid communication with the supply channel, wherein the nozzle comprises a swirl chamber in fluid communication with a discharge orifice,
• wherein a minimum Dv90 particle size exiting the discharge orifice when the valve stem is either in the fully open position or when the valve stem is displacing from the fully open position to the closed position defines a minimum Dv90 particle size, and wherein a maximum Dv90 particle size exiting the discharge orifice when the valve stem displaces from the fully open position to the closed position defines a closing maximum Dv90 particle size, wherein a ratio of the closing maximum Dv90 particle size to the minimum Dv90 particle size is less than 3.5, measured according to the Dv90 Particle Size Test Method described herein.