Applicator having improved contents transfer ability

Patent metadata

Field	Value
Publication number	US-10869533-B2
Application number	US-201615570150-A
Country	US
Kind code	B2
Filing date	Apr 22, 2016
Priority date	Apr 30, 2015
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

Abstract

The present invention relates to a cosmetic composition applicator comprising a urethane foam obtained by foaming a polyurethane, wherein the urethane foam has a structure comprising a membrane structure and a net structure. According to the present invention, the cosmetic composition applicator has improved transfer ability due to the simple absorption and discharge of a cosmetic composition and, simultaneously, can smoothly apply a cosmetic composition to the skin without caking.

First claim

The invention claimed is:

1. An applicator for a cosmetic composition, which comprises urethane foam obtained by foaming polyurethane, wherein the urethane foam has a structure comprising a membrane structure and a net structure, and comprises pores having an average pore size of 70-300 μm,
wherein the urethane foam has a multi-layered structure which comprises a plurality of urethane foam layers having a different pore size or a plurality of urethane foam layers made of a different material, and
wherein the urethane foam of the membrane structure has an average pore size of 70-150 μm and the urethane foam of the net structure has an average pore size of 100-300 μm.

2. The applicator for a cosmetic composition according to claim 1 , wherein the urethane foam is at least one type of foam selected from polyether-based polyurethane, polyester-based polyurethane and polycarbonate-based polyurethane.

3. The applicator for a cosmetic composition according to claim 1 , wherein the urethane foam is foam of polyether-based polyurethane.

4. The applicator for a cosmetic composition according to claim 1 , wherein the urethane foam comprises the membrane structure and the net structure at an area ratio of 9:1-3:7.

5. The applicator for a cosmetic composition according to claim 1 , which has a delivery ratio of a cosmetic composition of 30%-100%, wherein the delivery ratio is calculated by the following Mathematic Formula 1:
Delivery ratio (%)=(amount of cosmetic composition taken up by applicator to target for application (discharged amount)/amount of cosmetic composition absorbed by applicator (absorbed amount))×100.  [Mathematical Formula 1]

6. The applicator for a cosmetic composition according to claim 1 , which has an Asker F hardness of 30-80.

7. The applicator for a cosmetic composition according to claim 1 , which has a thickness of 0.05 mm-8 mm.

8. The applicator for a cosmetic composition according to claim 1 , which has a density of 0.05-0.2 g/cm 3 .

9. The applicator for a cosmetic composition according to claim 1 , wherein the urethane foam comprises pores and has a pore number per inch (ppi) of 5-500 per inch of the urethane foam.

10. The applicator for a cosmetic composition according to claim 1 , which further comprises at least one type of foam selected from acrylonitrile butadiene rubber (NBR), styrene-butadiene rubber (SBR), natural rubber (NR), polyvinyl chloride, polyethylene, ethylene-vinyl acetate rubber (EVA), latex, silicone, styrene-isoprene-styrene (SIS), styrene-ethylene-butylene-styrene (SEBS), polyvinyl alcohol (PVA), nitrile rubber, butyl rubber, chloroprene rubber, polyolefin, ether-based polyurethane, ester-based polyurethane, ethylene-based polyurethane, polyethylene terephthalate and polylactic acid, in combination with the urethane foam.

11. The applicator for a cosmetic composition according to claim 1 , which further comprises a polyurethane film layer on at least one surface of the urethane foam.

12. The applicator for a cosmetic composition according to claim 1 , which further comprises a string, loop or grip fixed thereto.

13. A cosmetic product comprising:
the applicator for a cosmetic composition as defined in claim 1 ; and
a cosmetic composition.

14. The cosmetic product according to claim 13 , wherein the cosmetic composition comprises a water-in-oil (W/O) type, oil-in-water (O/W) type, oil dispersed, water dispersed or solubilized composition.

15. The cosmetic product according to claim 13 , which further comprises a carrier for supporting the cosmetic composition.

Assignees

• Amorepacific Corp

Inventors

• Choi Jung Sun

Classifications

• A45D33/34 Primary

  Powder-puffs, e.g. with installed container · CPC title

• A45D33/36

  with handle · CPC title

• A45D2200/1009

  Applicators comprising a pad, tissue, sponge, or the like · CPC title

• A45D34/04 Primary

  Appliances specially adapted for applying liquid, e.g. using roller or ball · CPC title

• A45D37/00 Primary

  Sachet pads specially adapted for liquid toiletry or cosmetic substances · CPC title