Provided is a packaging material for electrochemical cells which has an identification mark that can be recognized from the outside and that is difficult to forge. The packaging material comprises a multilayer film which has a structure formed by laminating a base layer ( 11 ), an adhesive layer ( 13 ), a metal foil layer ( 12 ), an acid-modified polyolefin layer ( 14 ), and a heat-sealable layer ( 15 ) in this order, wherein the base layer ( 11 ) comprises both a oriented polyester film ( 11 b ) and a oriented nylon film ( 11 e ) with a printed layer ( 11 c ) provided on the surface of the oriented polyester film ( 11 b ) that faces the oriented nylon film ( 11 e ).

Claims

9 · 1 independent · depth 3

9 granted claims

›1.independentAn electrochemical cell packaging material for housing an electrochemical cell body, the electrochemical cell body including a positive electrode comp…+8

›2.↳ 1The electrochemical cell packaging material according to claim 1, characterized in thatnsaid base layer has an oriented polyester film and an oriented…d2

›3.↳ 1The electrochemical cell packaging material according to claim 1, characterized in thatnsaid base layer has an oriented polyester film and an oriented…d2+2

›4.↳ 1The electrochemical cell packaging material according to claim 1, characterized in thatnsaid base layer comprises a colored oriented nylon film.d2

›5.↳ 1The electrochemical cell packaging material according to claim 1, characterized in that an unevenness is applied to a metal foil surface that constitu…d2

›8.↳ 1The electrochemical cell packaging material according to claim 1, characterized in that a matte varnish layer is formed on said base layer.d2

›9.↳ 1The electrochemical cell packaging material according to claim 1, characterized in that a matte treatment is applied on said base layer to impart a pr…d2

Classifications

4 codes

IPC · International Patent Classification

Section H — Electricity

H01M2/02
H01M2/00

USPC · US Patent Classification

429/163429/122

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Pendency

4.2 y

1,538 days filing → grant

Office actions

non-final + final

Responses

2 RCE

Examiner

Barbara Gilliam

art unit 1727 · TC 1700

Law firm

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Citations: 29 back · 0 forward

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Priority chain

1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20120135301 A1	31 May 2012

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