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Aerosol hairspray product comprising a spraying device

  • US 9,986,809 B2
  • Filed: 06/26/2014
  • Issued: 06/05/2018
  • Est. Priority Date: 06/28/2013
  • Status: Active Grant
First Claim
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1. An aerosol hairspray product wherein the product comprises:

  • i. a pressurisable container (118) comprising a container wall (201) which encloses a reservoir (204) for storing a hairstyling formulation and a liquefied gas propellant;

    ii. the hairstyling formulation comprising;

    (a) from about 41% to about 60% water, by total weight of the hairstyling formulation and propellant; and

    (b) from about 5.0% to about 15% hairstyling polymer by total weight of the hairstyling formulation and propellant, wherein the hairstyling polymer is water-soluble; and

    (c) wherein the hairstyling formulation is free of alcohol;

    iii. a spraying device attached to the container (118) for dispensing the hairstyling formulation from the reservoir (204) of the container (118), wherein the spraying device comprises a valve (205) and a nozzle, wherein the valve comprises a valve body (113), a stem (107) and a spring means (108), wherein the valve body (113) houses an insert (109), wherein the insert comprises an insert orifice (109a) and at least two channels (110a, 110b), wherein the channels (110a, 110b) are tangentially disposed about the insert orifice (109a), wherein the valve body (113) comprises at least two vapour taps (211a, 211b), wherein the insert orifice (109a) is capable of being in liquid communication with the hairstyling formulation in the reservoir (204);

    wherein the channels (110a, 110b) converge on the insert orifice (109a); and

    wherein the insert orifice (109a) has a diameter of from about 0.020 inch (0.500 mm) to about 0.070 inch (1.778 mm);

    wherein the hairstyling formulation without propellant has a viscosity of from about 0.5 cSt to about 6 cSt, wherein the viscosity is measured at 20°

    C.+/−

    0.1 C;

    wherein the product comprises from about 40% to about 45% dimethylether, by total weight of the hairstyling formulation and propellant, wherein the spraying device is capable of causing the product to spray and wherein an ejected composition is sprayed, wherein the ejected composition consists of particles having an average particle size distribution (Dv50) of from about 40 microns to about 100 microns.

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