# US 11,439,540 B2 · Breathable adhesive bandages

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- Number: US 11,439,540 B2
- Document ID: US11439540B2
- Status: Granted
- Kind: B2
- Application number: 17/400,051
- Filed: 2021-08-11
- Published: 2021-12-02
- Granted: 2022-09-13
- Earliest claimed: 2019-02-27
- Applicants: Lucas Hector Izard Smith
- Inventors: Lucas Hector Izard Smith
- Web page: https://patentgrep.com/patent/US11439540B2

## CPC

- A61F 13/0243: {characterised by the properties of the skin contacting layer, e.g. air-vapor permeability}
- A61F 13/0206: with absorbent fibrous layers, e.g. woven or non-woven absorbent pads or island dressings
- A61F 13/0236: {characterised by the application/handling support layer}
- A61F 13/025: {having a special distribution arrangement of the adhesive}
- A61F 13/0289: {manufacturing of adhesive dressings}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)

## Abstract

A breathable adhesive bandage, sticking plaster or plaster includes a fabric layer, a pad and an adhesive. The adhesive may provide only partial coverage of the fabric layer, allowing breathability. The pad and/or fabric layer may be formed from wool, such as merino wool. A backing may be applied to the adhesive layer.

## Claims

### Claim 1

A breathable adhesive bandage, comprising:
a fabric layer formed entirely of wool, the fabric layer comprising wool fibers that have a fiber thickness in a range of 13 to 25 microns; wherein the fabric layer has a weight in a range of 5 to 15 ounces per square yard and includes oppositely disposed first and second surfaces, wherein the first surface is a brushed outer surface that is formed by brushing or distressing the first surface after formation of the fabric layer to provide extra thickness and padding or cushioning to the fabric layer;
an adhesive layer applied to the second surface of the fabric layer in a discontinuous pattern such that the adhesive layer is configured to cover 40% to 70% of the second surface of the fabric layer;
a pad attached to the second surface of the fabric layer or to the adhesive layer; and
a removable backing, wherein the removable backing is configured to cover the pad and removably attach to the adhesive layer.

### Claim 2 (depends on 1)

The breathable adhesive bandage as claimed in claim 1, wherein the pad is formed from wool.

### Claim 3 (depends on 2)

The breathable adhesive bandage as claimed in claim 2, wherein the pad is formed from merino wool.

### Claim 4 (depends on 1)

The breathable adhesive bandage as claimed in claim 1 wherein the fabric layer is a woven layer.

### Claim 5 (depends on 1)

The breathable adhesive bandage as claimed in claim 1 wherein the fabric layer is a non-woven layer.

### Claim 6 (depends on 1)

The breathable adhesive bandage as claimed in claim 1, wherein the fabric layer is formed from merino wool.

### Claim 7 (depends on 1)

The breathable adhesive bandage as claimed in claim 1, wherein the fabric layer is brushed or distressed only on the first surface.

### Claim 8 (depends on 1)

The breathable adhesive bandage as claimed in claim 1, wherein the pad is a woven fabric pad.

### Claim 9 (depends on 1)

The breathable adhesive bandage as claimed in claim 1, wherein the pad is a non-woven fabric pad.

### Claim 10 (depends on 1)

The breathable adhesive bandage as claimed in claim 1, wherein the pad is formed from a fabric with a weight in a range of 4 to 10 ounces per square yard.

### Claim 11 (depends on 1)

The breathable adhesive bandage as claimed in claim 1, wherein the removable backing is one or more of: a paper backing, a biodegradable plastic material backing, a cotton or recycled cotton backing.

### Claim 12 (depends on 1)

The breathable adhesive bandage as claimed in claim 1, wherein the removable backing comprises an inner surface, and wherein the inner surface is coated to limit adhesion between the removable backing and the adhesive layer.

### Claim 13

A method of manufacturing a breathable adhesive bandage, comprising:
providing a fabric layer formed entirely from wool, the fabric layer comprising wool fibers that have a fiber thickness in a range of 13 to 25 microns; wherein the fabric layer has a weight in a range of 5 to 15 ounces per square yard and includes oppositely disposed first and second surfaces;
after formation of the fabric layer, brushing the first surface of the fabric layer to distress the first surface of the fabric layer to form a brushed outer surface of the fabric layer and to provide extra thickness and padding or cushioning to the fabric layer;
applying an adhesive layer onto the second surface of the fabric, layer in a discontinuous pattern such that the adhesive layer covers 40% to 70% of the second surface of the fabric layer;
attaching a pad to the second surface of the fabric layer or to the adhesive layer;
attaching a removable backing to the adhesive layer, wherein the removable backing covers the pad and removably attaches to the adhesive layer.

### Claim 14 (depends on 13)

The method as claimed in claim 13, further comprising sterilizing one or more of the pad and the fabric layer.

### Claim 15 (depends on 14)

The method as claimed in claim 14, wherein sterilizing one or more of the pad and the fabric layer is performed by irradiation.