# US 10,864,701 B2 · Stretchable conductive film for textiles

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- Number: US 10,864,701 B2
- Document ID: US10864701B2
- Status: Granted
- Kind: B2
- Application number: 15/779,579
- Filed: 2016-10-19
- Published: 2020-03-19
- Granted: 2020-12-15
- Earliest claimed: 2015-11-30
- Assignees: Tatsuta Electric Wire & Cable Co., Ltd.
- Applicants: Tatsuta Electric Wire & Cable Co., Ltd.
- Inventors: Akio Takahashi; Tsunehiko Terada
- Web page: https://patentgrep.com/patent/US10864701B2

## CPC

- H01B 5/14: comprising conductive layers or films on insulating-supports
- A61B 5/318: Heart-related electrical modalities, e.g. electrocardiography [ECG]
- A61B 5/6803: {Head-worn items, e.g. helmets, masks, headphones or goggles}
- B32B 7/025: Electric or magnetic properties
- B32B 7/06: permitting easy separation
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 25/02: with fibres or particles {being present as additives in the layer}
- B32B 27/00: Layered products comprising {a layer of} synthetic resin {(fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18)}
- B32B 27/20: using fillers, pigments, thixotroping agents
- B32B 27/40: comprising polyurethanes
- C09J 7/20: characterised by their carriers
- C09J 7/203: {characterised by the structure of the release feature on the carrier layer}
- C09J 7/35: Heat-activated
- C09J 7/405: {characterised by the substrate of the release liner}
- C09J 9/02: Electrically-conducting adhesives
- H01B 1/22: the conductive material comprising metals or alloys
- A61B 5/6804: {Garments; Clothes}
- A61B 2562/125: characterised by the manufacture of electrodes
- B32B 2264/105: Metal
- B32B 2307/202: Conductive
- C09J 2203/326: for bonding electronic components such as wafers, chips or semiconductors
- C09J 2301/41: additives as essential feature of the carrier layer
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)

## Abstract

A stretchable conductive film for textiles 1 includes a stretchable conductive layer 3, and a hot-melt adhesive agent layer 4 formed on one surface of the stretchable conductive layer 3. The stretchable conductive film for textiles 1 may also include a first peel film 2 formed on a surface of the stretchable conductive layer 3 on the opposite side from the hot-melt adhesive agent layer 4 side, and a second peel film 5 formed on a surface of the hot-melt adhesive agent layer 4 on the opposite side from the stretchable conductive layer 3 side.

## Claims

### Claim 1

A stretchable conductive film for textiles, comprising:
a stretchable conductive layer having stretch properties;
a hot-melt adhesive agent layer formed on one surface of the stretchable conductive layer; and
a stretchable protection layer having stretch properties and formed on at least a part of a surface of the stretchable conductive layer on an opposite side from the hot-melt adhesive agent layer side, wherein
the stretchable conductive layer is configured from a conductive composition including an elastomer and a conductive filler filling the elastomer, and
the stretchable protection layer is configured from a composition including the elastomer that is filled with carbon black.

### Claim 2 (depends on 1)

The stretchable conductive film for textiles according to claim 1, further comprising a peel film formed on a surface of the hot-melt adhesive agent layer on an opposite side from the stretchable conductive layer side.

### Claim 3 (depends on 1)

The stretchable conductive film for textiles according to claim 1, further comprising:
a first peel film formed on a surface of the stretchable conductive layer on an opposite side from the hot-melt adhesive agent layer side; and
a second peel film formed on a surface of the hot-melt adhesive agent layer on an opposite side from the stretchable conductive layer side.

### Claim 4 (depends on 1)

The stretchable conductive film for textiles according to claim 1, further comprising:
a first peel film formed on a surface of the stretchable conductive layer on an opposite side from the hot-melt adhesive agent layer side so as to cover the stretchable protection layer; and
a second peel film formed on a surface of the hot-melt adhesive agent layer on an opposite side from the stretchable conductive layer side.

### Claim 5 (depends on 1)

The stretchable conductive film for textiles according to claim 1, wherein the conductive filler is dendritic.

### Claim 6 (depends on 5)

The stretchable conductive film according to claim 5, wherein the conductive filler is a dendritic silver powder.

### Claim 7 (depends on 5)

The stretchable conductive film according to claim 5, wherein the conductive filler is a silver-coated copper powder comprising a dendritic copper powder coated with silver.

### Claim 8 (depends on 1)

The stretchable conductive film for textiles according to claim 1, wherein the conductive filler has a coil shape.

### Claim 9 (depends on 1)

The stretchable conductive film for textiles according to claim 1, wherein the hot-melt adhesive agent layer has a melting point of not more than 130° C., durometer hardness of not more than 95 A, and rupture elongation of not less than 300%.