DEVICE FOR SPRAYING A COSMETIC COMPOSITION WHILE BLOWING HOT OR COLD AIR

• US 20090200392A1
• Filed: 02/12/2009
• Published: 08/13/2009
• Est. Priority Date: 02/13/2008
• Status: Active Grant

• Current Assignee: L'Oreal SA
• Original Assignee: L'Oreal SA
• Inventors: DURU, NICOLAS, PRUNIER, MARION
• Granted Patent: US 8,746,586 B2
• Time in Patent Office: Days
• US Class Current: 239/13
• CPC Class Codes: A45D 20/12 Details thereof or accessories therefor, e.g. nozzles, stands
• CPC Class Codes: A45D 2200/057 Spray nozzles; Generating atomised liquid
• CPC Class Codes: B05B 17/0623 coupled with a vibrating horn
• CPC Class Codes: B05B 17/063 having an internal channel for supplying the liquid or other fluent material
• CPC Class Codes: B05B 7/066 with an inner liquid outlet surrounded by at least one annular gas outlet

Abstract

A device for spraying a cosmetic or dermatological composition may comprise an ultrasound or electrostatic spray head, an airflow generator for entraining a spray of composition particles atomized by the spray head and a conditioning device, the conditioning device arranged to modify the temperature of the outgoing stream of air.

Claims

1. A device for spraying a cosmetic or dermatological composition, comprising:

an ultrasound or electrostatic spray head;

an airflow generator for creating a stream of air for entraining a spray of composition particles atomized by the spray head; and

a conditioning device for modifying the temperature of the outgoing stream of air, the conditioning device being placed upstream from the airflow generator.

6. A device according to claim 1, the conditioning device enabling the temperature of the outgoing air stream to be raised or lowered, the spray head being located downstream from the conditioning device.

7. A device according to claim 1, the spray head, the airflow generator, and the conditioning device being in alignment.

8. A device according to claim 1, arranged to raise the temperature of the outgoing stream of air to more than 30°

C.

9. A device according to claim 1, the device being arranged to raise the temperature of the outgoing stream of air to more than 35°

C.

10. A device according to claim 1, the temperature of the outgoing stream or air being less than or equal to 40°

C.

11. A device according to claim 1, said airflow generator being a fan.

12. A device according to claim 1, the conditioning device including a heater device having a heater resistance.

13. A device according to claim 1, the flow rate of the outgoing stream of air lying in the range 4 m³/h to 7 m³/h.

14. A device according to claim 1, the composition being a makeup composition, a self-tanning agent, a composition including a hair agent, or a sunscreen composition.

15. A device according to claim 14, the composition being a foundation.

16. A device according to claim 1, the spray head including a sonotrode.

17. A method of cosmetically treating human keratinous materials, wherein a composition is sprayed and entrained towards the materials to be treated by a stream of hot or cold air by means of a device as defined in claim 1.

18. A method according to claim 17, the composition being a foundation and the composition being sprayed onto the skin.

19. A method according to claim 17, the composition being a hair agent and being sprayed onto the hair.

20. A method according to claim 17, the flow rate of the composition lying in the range 0.5 g/min to 10 g/min.

21. A method according to claim 17, the mean size of the droplets of composition lying in the range 20 μ

m to 30 μ

m.

22. A method according to claim 1, the temperature of the blown air lying in the range 30°

C. to 40°

C.

23. A method according to claim 17, the method comprising the following steps and the composition being atomized by a sonotrode:

i) putting a fan into operation to create a stream of air for entraining particles of composition,

ii) after a predefined delay, setting the sonotrode into vibration by means of a transducer, and

iii) after another delay setting a pump into operation for feeding the sonotrode with composition.

2. A device for spraying a cosmetic or dermatological composition, the device comprising a box suitable for handling by a user to spray the composition onto the skin or onto other human keratinous materials, and further comprising:

an ultrasound or electrostatic spray head;

an airflow generator for entraining a spray of composition particles atomized by the spray head; and

a heater device arranged to raise the temperature of the outgoing stream of air to more than 30°

C. or a cooler device for modifying the temperature of the outgoing stream of air.

3. A device for spraying a cosmetic or dermatological composition, the device comprising a box suitable for handling by a user to spray the composition onto the skin or onto other human keratinous materials, and further comprising:

an ultrasound or electrostatic spray head;

airflow generator for entraining a spray of composition particles atomized by the spray head; and

a conditioning device for modifying the temperature of the outgoing stream of air;

the conditioning device including a resistance heater.

4. A device for spraying a cosmetic or dermatological composition, the device comprising a box suitable for handling by a user to spray the composition onto the skin or onto other human keratinous materials, and further comprising:

an ultrasound or electrostatic spray head;

an airflow generator for entraining a spray of composition particles atomized by the spray head; and

a conditioning device for modifying the temperature of the outgoing stream of air;

the temperature of the outgoing air being regulated by the presence of a temperature sensor exposed to the stream of hot or cold air and an electronic regulator loop.

5. A device for spraying a cosmetic or dermatological composition, the device comprising a box suitable for handling by a user to spray the composition onto the skin or onto other human keratinous materials, and further comprising:

an ultrasound or electrostatic spray head;

an airflow generator for entraining a spray of composition particles atomized by the spray head; and

a conditioning device for modifying the temperature of the outgoing stream of air;

the device being arranged in such a manner as to enable the user to select between operation in which the air blown by the device is heated, and operation in which it is not heated.