# US 2013/0157086 A1 · Pressure-sensitive adhesive tape for battery, battery using the pressure-sensitive adhesive tape and process for manufacturing a battery

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- Number: US 2013/0157086 A1
- Document ID: US20130157086A1
- Status: Published application
- Kind: A1
- Application number: 13/722,161
- Filed: 2012-12-20
- Published: 2013-06-20
- Earliest claimed: 2011-12-20
- Assignees: Nitto Denko Corporation
- Inventors: Shigeki KAWABE; Hiroomi HANAI; Shunsuke NOUMI; Hiroyoshi TAKE
- Web page: https://patentgrep.com/patent/US20130157086A1

## CPC

- C09J 7/381: {based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds}
- C09J 151/04: grafted on to rubbers
- H01M 50/124: having a layered structure
- H01M 50/193: Organic material
- H01M 50/198: characterised by physical properties, e.g. adhesiveness or hardness
- C09J 2203/33: for batteries or fuel cells
- C09J 2451/00: Presence of graft polymer
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- Y10T 156/10: Methods of surface bonding and/or assembly therefor
- Y10T 428/263: Coating layer not in excess of 5 mils thick or equivalent
- 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)
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The present invention relates to a pressure-sensitive adhesive tape for battery containing a substrate and a pressure-sensitive adhesive layer provided on at least one surface of the substrate, in which the pressure-sensitive adhesive layer has a thickness of from 2 μm to 100 μm, and in which the pressure-sensitive adhesive tape has a 180° peeling adhesive force toward an aluminum foil after pressure bonding at 25° C. being 0.05 N/10 mm or more and a 180° peeling adhesive force toward an aluminum foil after thermocompression bonding at a temperature of 30° C. or higher to lower than 200° C. being 0.5 N/10 mm or more.

## Claims

### Claim 1

A pressure-sensitive adhesive tape for battery comprising:
a substrate and
a pressure-sensitive adhesive layer provided on at least one surface of the substrate,
wherein the pressure-sensitive adhesive layer has a thickness of from 2 μm to 100 μm, and
wherein the pressure-sensitive adhesive tape has a 180° peeling adhesive force toward an aluminum foil after pressure bonding at 25° C. being 0.05 N/10 mm or more and a 180° peeling adhesive force toward an aluminum foil after thermocompression bonding at a temperature of 30° C. or higher to lower than 200° C. being 0.5 N/10 mm or more.

### Claim 2 (depends on 1)

The pressure-sensitive adhesive tape for battery according to claim 1, wherein the pressure-sensitive adhesive layer contains a thermoplastic elastomer.

### Claim 3 (depends on 2)

The pressure-sensitive adhesive tape for battery according to claim 2, wherein the thermoplastic elastomer is an acid-modified thermoplastic elastomer.

### Claim 4 (depends on 2)

The pressure-sensitive adhesive tape for battery according to claim 2, wherein the pressure-sensitive adhesive layer further contains a tackifier.

### Claim 5 (depends on 4)

The pressure-sensitive adhesive tape for battery according to claim 4, wherein the pressure-sensitive adhesive layer contains the tackifier in an amount of from 5 parts by weight to 50 parts by weight based on 100 parts by weight of the thermoplastic elastomer.

### Claim 6 (depends on 1)

A battery obtained by attaching the pressure-sensitive adhesive tape for battery according to claim 1 to a battery constituent member.

### Claim 7 (depends on 1)

A process for manufacturing a battery comprising a step of attaching the pressure-sensitive adhesive tape for battery according to claim 1 to a battery constituent member and subjecting them to thermocompression bonding at a temperature of 30° C. or higher to lower than 200° C.