# US 12,016,168 B2 · Web for absorbing electromagnetic wave and housing of electronic parts using the same

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- Number: US 12,016,168 B2
- Document ID: US12016168B2
- Status: Granted
- Kind: B2
- Application number: 14/468,012
- Filed: 2014-08-25
- Published: 2015-06-25
- Granted: 2024-06-18
- Earliest claimed: 2013-12-19
- Assignees: Hyundai Motor Company
- Applicants: Hyundai Motor Company
- Inventors: In Chang Chu; Jin Woo Kwak
- Web page: https://patentgrep.com/patent/US12016168B2

## CPC

- H05K 9/009: {comprising electro-conductive fibres, e.g. metal fibres, carbon fibres, metallised textile fibres, electro-conductive mesh, woven, non-woven mat, fleece, cross-linked}
- H05K 5/03: Covers
- Y10T 442/10: Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An electromagnetic wave-absorbing web for controlling interference by electromagnetic wave at a low frequency band generated from various electric and electronic parts and for securing strength without added material and achieving lightweight is provided. The web is manufactured of a mixture solution in the form of a fabric having a mesh structure, wherein the mixture solution is made by mixing a conductive nanomaterial, a magnetic nanofiller, a binder, and a solvent.

## Claims

### Claim 1

A web for absorbing an electromagnetic wave manufactured of a mixture solution in the form of a fabric having a mesh structure,
wherein the mixture solution is a mixture of a conductive nanomaterial, a magnetic nanofiller, a binder, and a solvent,
wherein the magnetic nanofiller comprises a magnetic metal having a magnetic permeability different from that of the conductive nanomaterial, and
wherein the magnetic metal is in the form of nanowire or particles and filled in gaps of the conductive nanomaterial, and wherein the web has a yarn-shape and the mesh structure is formed within the yarn-shaped web.

### Claim 2 (depends on 1)

The web of claim 1, wherein the binder comprises one or more selected from a group of polyester, acryl, polyvinyl chloride (PVC), polyurethane, polypropylene, polyethylene, epoxy, polyamide, and nylon.

### Claim 3 (depends on 1)

The web of claim 1, wherein the solvent comprises one or more selected from a group of water, halogenated hydrocarbon, alcohol, ester, ketone, and ether.

### Claim 4 (depends on 1)

The web of claim 1, wherein the fabric is made of one selected from a group of melt blown, spun bond, and electro spun web.

### Claim 5 (depends on 1)

A housing for an electric part manufactured using a panel which is manufactured by coating plastic on one side or both sides of the web for absorbing the electromagnetic wave of claim 1.

### Claim 6 (depends on 1)

A housing for an electric part manufactured using a panel which is manufactured by coating plastic on one side or both sides of the web for absorbing the electromagnetic wave of claim 1.

### Claim 7 (depends on 2)

A housing for an electric part manufactured using a panel which is manufactured by coating plastic on one side or both sides of the web for absorbing the electromagnetic wave of claim 2.

### Claim 8 (depends on 3)

A housing for an electric part manufactured using a panel which is manufactured by coating plastic on one side or both sides of the web for absorbing the electromagnetic wave of claim 3.

### Claim 9 (depends on 4)

A housing for an electric part manufactured using a panel which is manufactured by coating plastic on one side or both sides of the web for absorbing the electromagnetic wave of claim 4.

### Claim 10

A web for absorbing an electromagnetic wave manufactured of a mixture solution in the form of a fabric having a mesh structure,
wherein the mixture solution is a mixture of a conductive nanomaterial, a magnetic nanofiller, a binder, and a solvent, and wherein the web has a yarn-shaped tissue,
wherein the magnetic nanofiller comprises a magnetic metal having a magnetic permeability different from that of the conductive nanomaterial, and
wherein the magnetic metal is in the form of nanowire or particles and filled in gaps of the conductive nanomaterial such that a filling factor of the whole functional materials is increased, and the shield effect against the electromagnetic waves is increased.

### Claim 11 (depends on 10)

The web of claim 10, wherein the conductive nanomaterial comprises one or more selected from the group consisting of a ceramic bead, a ceramic fiber, a carbon nanotube, and a graphite nanoplate.

### Claim 12 (depends on 1)

The web of claim 1, wherein the conductive nanomaterial comprises one or more selected from the group consisting of a ceramic bead, a ceramic fiber, a carbon nanotube, and a graphite nanoplate.