Compressed gas propelled aerosol devices
AssigneeReckitt & Colman Products Limited
InventorsRodney Thomas Fox, Neale Mark Harrison, John Farrell Hughes, Lindsey Faye Whitmore
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Abstract
A method of reducing the droplet sizes of a composition sprayed from an aerosol spray device comprising a compressed gas propellant, which method comprises imparting a unipolar charge to the liquid droplets by double layer charging during the spraying of the liquid droplets from the aerosol spray device, the unipolar charge being at a level such that the said droplets have a charge to mass ratio of at least +/−1×10−4 C/kg.
Claims13
A method of reducing the droplet size of a composition sprayed from an aerosol spray device comprising a compressed gas propellant, which method comprises imparting a unipolar charge to the liquid droplets by double layer charging during the spraying of the liquid droplets from the aerosol spray device, the unipolar charge being at a level such that the said droplets have a charge to mass ratio of at least +/−1×10−4 C/kg.
Apparatus for spraying a liquid composition capable of forming charged droplets, the apparatus comprising:
- (1) a reservoir for accommodating the liquid composition;
- (2) a liquid composition contained within the reservoir and including a compressed gas propellant;
- (3) a spray head for expelling the composition in the form of a spray of droplets;
- and
- (4) a conduit system for feeding the composition from the reservoir to the spray head,
- wherein the composition is formulated and the apparatus is constructed in order to achieve a charge to mass ratio of at least +/−1×10−4 C/kg by double layer charging imparting a unipolar charge to the droplets during the spraying of the droplets from the aerosol spray device.
Dependencies are inferred from the claim text.