Patent ID: 8894269

Claim:
A method of simultaneously producing two different cosmetics emulsions comprising the steps of: combining a first oil phase and a first water phase of a first cosmetics emulsion in a first vessel, the first vessel having a substantially rectangular cross section; combining a second oil phase and second water phase of a second cosmetics emulsion in a second vessel, the second vessel having a substantially rectangular cross section, the second cosmetics emulsion having a different composition from the first cosmetics emulsion; placing the first vessel and second vessel into a continuous flow mechanical oscillation chamber, the chamber configured to provide ultrasonic cavitation to the first cosmetics emulsion and second cosmetics emulsion, the chamber defining a flow channel in which the first and second vessels are placed, and through which a fluid may flow; selecting the fluid to have a specific acoustic impedance equal or close to an acoustic impedance of the first and second emulsions; filling, at least partially, the flow channel with the fluid, the fluid filling around the first and second vessels placed in the flow channel; controlling a temperature of the fluid; selecting a vibrational amplitude of a wall of the chamber defining the flow channel to exceed a threshold of acoustic cavitation of the first cosmetics emulsion and second cosmetics emulsion; arranging the first vessel to have a major edge arranged parallel to the wall when placed in the chamber; arranging the second vessel to have a major edge arranged parallel to the wall when placed in the chamber; and vibrating the wall of the chamber at the selected vibrational amplitude for a predetermined time period, such that the vibrations form a wave that propegates perpendicularly to the major edge of the first vessel and the major edge of the second vessel, the vibrating causing cavitation of the first emulsion and second emulsion.