Ultraviolet protection patch and application method thereof

Patent metadata

Field	Value
Publication number	US-12097272-B2
Application number	US-201917292176-A
Country	US
Kind code	B2
Filing date	Nov 8, 2019
Priority date	Nov 8, 2018
Publication date	Sep 24, 2024
Grant date	Sep 24, 2024

Abstract

An ultraviolet protection patch is provided. An ultraviolet protection patch, according to one embodiment of the present invention, is implemented by comprising: an ultraviolet protection layer including a support component and an ultraviolet protection agent; and a first shape-retaining layer which is a fiber web provided on one surface of the ultraviolet protection layer. According to this, as the ultraviolet protection patch comprises the ultraviolet protection layer and the shape-retaining layer which have predetermined properties, an ultraviolet protection material does not directly contact the skin, and thus skin trouble, irritation, and white cast do not occur, and as the patch is excellent in elasticity, the patch has excellent stiffness without inhibiting movement of a site to which the patch is adhered or peeling off even by physical stimuli, and the ultraviolet protection layer and the shape-retaining layer have a predetermined basis weight relationship, thereby having excellent transparency, and thus, there is an effect of not reducing visibility of the site to which the patch is adhered when the patch is adhered to the skin.

First claim

The invention claimed is:

1. An ultraviolet protection patch comprising:
an ultraviolet protection layer including a support component and an ultraviolet protection agent;
a first shape-retaining layer which is a fiber web provided on a first surface of the ultraviolet protection layer; and
a second shape-retaining layer which is a fiber web provided on a second surface of the ultraviolet protection layer, wherein the second surface is opposite to the first surface,
wherein the first shape-retaining layer and the second shape-retaining layer each independently have a thickness of 2 μm to 35 μm and a basis weight of 3 g/m 2 to 30 g/m 2 , and a basis weight ratio of the first shape-retaining layer to the ultraviolet protection layer and a basis weight ratio of the second shape-retaining layer to the ultraviolet protection layer are each independently in a range of 1:0.3 to 1:2.5.

2. The ultraviolet protection patch of claim 1 , wherein the support component includes a hydrophilic resin, and
the ultraviolet protection layer is a porous substrate formed of a plurality of first nanofibers including the hydrophilic resin and the ultraviolet protection agent.

3. The ultraviolet protection patch of claim 2 , wherein the hydrophilic resin includes at least one selected from the group consisting of polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), polyethylene oxide (PEO), carboxymethyl cellulose (CMC), a polyacrylic acid (PAA), carboxyl methyl cellulose (CMC), starch, and a hyaluronic acid.

4. The ultraviolet protection patch of claim 1 , wherein the support component includes a hydrophobic resin, and
the ultraviolet protection layer is a non-porous substrate including the hydrophobic resin and the ultraviolet protection agent.

5. The ultraviolet protection patch of claim 4 , wherein the hydrophobic resin includes at least one selected from the group consisting of thermoplastic polyurethane resin (TPU), polyacrylonitrile, polyethylene, polypropylene, polystyrene, polyvinylidene fluoride, and polymethyl methacrylate.

6. The ultraviolet protection patch of claim 1 , wherein the ultraviolet protection layer includes the ultraviolet protection agent in a content of 5 to 110 parts by weight with respect to 100 parts by weight of the support component.

7. The ultraviolet protection patch of claim 1 , wherein the ultraviolet protection agent includes both an organic ultraviolet protection agent and an inorganic ultraviolet protection agent.

8. The ultraviolet protection patch of claim 1 , wherein the first shape-retaining layer and the second shape-retaining layer are each independently a fiber web formed of a plurality of second nanofibers.

9. The ultraviolet protection patch of claim 1 , wherein the first shape-retaining layer and the second shape-retaining layer are each independently made of a mixture resin which includes an elastic resin including at least one selected from the group consisting of thermoplastic polyurethane resin (TPU), polymethyl methacrylate (PMMA), and polypyrrole (PPy) and a strength reinforcing resin including at least one selected from the group consisting of polyvinylidene fluoride (PVDF), polystyrene (PS), and polyethersulfone (PES).

10. The ultraviolet protection patch of claim 9 , wherein the mixture resin includes the elastic resin and the strength reinforcing resin in a weight ratio of 1:0.2 to 1:4.

11. The ultraviolet protection patch of claim 1 , further comprising a support member provided on one surface of the first shape-retaining layer.

12. A method of applying an ultraviolet protection patch, the method comprising:
performing moisture treatment on at least a portion of the ultraviolet protection patch according to claim 1 to dissolve the ultraviolet protection layer and fill at least some pores of the first shape-retaining layer and the second shape-retaining layer; and
attaching the ultraviolet protection patch to skin.

Assignees

• Amolifescience Co Ltd

Inventors

• Lee Su Yeon
• Kim Ji Young
• Lee Hyo Jung
• Seo In Yong
• Lee Seoung Hoon

Classifications

• A61K8/87

  Polyurethanes · CPC title

• A61K8/40

  containing nitrogen (quinones containing nitrogen A61K8/355) · CPC title

• A61K8/35

  Ketones, e.g. benzophenone · CPC title

• A45D44/22

  Face shaping devices, e.g. chin straps; Wrinkle removers, e.g. stretching the skin (skin stretchers for shaving A45D27/38) · CPC title

• A45D44/002

  Masks for cosmetic treatment of the face · CPC title