# US 10,307,996 B2 · Nano thin-film transfer sheet, method for manufacturing nano thin-film transfer sheet, and method for transferring nano thin-film layer into adherend

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- Number: US 10,307,996 B2
- Document ID: US10307996B2
- Status: Granted
- Kind: B2
- Application number: 14/766,305
- Filed: 2013-06-06
- Published: 2016-02-04
- Granted: 2019-06-04
- Earliest claimed: 2013-02-08
- Assignees: Hitachi Chemical Company, Ltd.
- Applicants: Hitachi Chemical Company, Ltd.
- Inventors: Kazuyuki Kamo; Nobuaki Takane
- Web page: https://patentgrep.com/patent/US10307996B2

## CPC

- B32B 27/08: of synthetic resin
- A45D 44/22: Face shaping devices, e.g. chin straps; Wrinkle removers, e.g. stretching the skin (skin stretchers for shaving A45D27/38)
- A61K 8/02: characterised by special physical form
- A61K 8/0233: {Distinct layers, e.g. core/shell sticks}
- A61K 8/736: {Chitin; Chitosan; Derivatives thereof}
- A61K 8/8129: {Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers or esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers, e.g. polyvinylmethylether}
- A61K 8/85: Polyesters
- A61Q 19/00: Preparations for care of the skin
- A61Q 19/08: Anti-ageing preparations
- B32B 5/028: {Net structure, e.g. spaced apart filaments bonded at the crossing points}
- B32B 7/06: permitting easy separation
- B32B 37/0038: {involving application of liquid to the layers prior to lamination, e.g. wet laminating (B32B37/12 takes precedence)}
- B32B 37/025: {Transfer laminating}
- B32B 38/10: Removing layers, or parts of layers, mechanically or chemically
- A61K 2800/413: Nanosized, i.e. having sizes below 100 nm
- A61K 2800/5424: anionic
- A61K 2800/5426: cationic
- B32B 2038/168: {Removing solvent}
- B32B 2307/726: Permeability to liquids, absorption
- B32B 2307/732: Dimensional properties
- B32B 2307/748: Releasability
- B32B 2555/00: Personal care
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- A45D: HAIRDRESSING OR SHAVING EQUIPMENT (wigs, toupees or the like A41G3/00, A41G5/00; hairdressers' chairs A47C1/04; hair cutting appliances, razors B26B); EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS

## Abstract

The present invention relates to a nano thin-film transfer sheet comprising a permeable base, a soluble support layer, and a nano thin-film layer in this order, wherein the permeable base is a base which allows a solvent dissolving the soluble support layer to permeate or penetrate therethrough.

## Claims

### Claim 1

A nano thin-film transfer sheet comprising a mesh cloth, a soluble support layer, and a nano thin-film layer in this order,
wherein the mesh cloth allows a solvent dissolving the soluble support layer to permeate or penetrate therethrough, and
wherein the mesh cloth includes a cloth selected from the croup consisting of a polyethylene terephthalate mesh cloth, a nylon mesh cloth, a carbon mesh cloth, a fluorine resin mesh cloth, and a polypropylene mesh cloth.

### Claim 2 (depends on 1)

The nano thin-film transfer sheet according to claim 1, wherein the soluble support layer is a layer formed of a polymer dissolvable in water or alcohol.

### Claim 3 (depends on 1)

The nano thin-film transfer sheet according to claim 1, wherein the nano thin-film layer comprises a layer A formed by using a solution containing a polycation; and a layer B formed by using a solution containing a polyanion.

### Claim 4 (depends on 3)

The nano thin-film transfer sheet according to claim 3, wherein the nano thin-film layer is a layer in which the layer A and the layer B are laminated alternately.

### Claim 5 (depends on 3)

The nano thin-film transfer sheet according to claim 3, wherein the polycation is a cationic polymer having two or more amino groups in one molecule.

### Claim 6 (depends on 3)

The nano thin-film transfer sheet according to claim 3, wherein the polyanion is an anionic polymer having two or more carboxyl groups or carboxylate groups in one molecule.

### Claim 7 (depends on 1)

The nano thin-film transfer sheet according to claim 1, wherein a thickness of the nano thin-film layer is from 1 nm to 300 nm.

### Claim 8 (depends on 1)

The nano thin-film transfer sheet according to claim 1, further comprising a cover film on a surface of the nano thin-film layer opposite to a surface on which the soluble support layer is provided.

### Claim 9 (depends on 1)

The nano thin-film transfer sheet according to claim 1, wherein the nano thin-film transfer sheet is for adhesion onto the skin.

### Claim 10 (depends on 1)

The nano thin-film transfer sheet according to claim 1, wherein the nano thin-film transfer sheet is for cosmetic use.