LAYERED PRODUCT FOR FUEL BATTERIES - TOYOBO FILM SOLUTIONS LTD

Title:

LAYERED PRODUCT FOR FUEL BATTERIES

Document Type and Number:

WIPO Patent Application WO/2021/044940

Kind Code:

A1

Abstract:

Provided is a layered product that is for fuel batteries and that, when applied to a fuel battery stack, improves the uniformity of distances between separators.　This layered product is for fuel batteries and has an outer peripheral shape corresponding to the outer peripheral shape of a fuel battery cell, and has a resin base film and a heat seal layer provided on both surfaces of the resin base film, wherein the resin base film has a storage modulus of 2,000-8,000 MPa, the resin base film has an average thickness of 30-300 μm, a maximum value T1max and a minimum value T1min of the thickness of the resin base film as measured at a peripheral portion of the resin base film satisfy the relationship T1max - T1min ≤ 12 μm, a maximum value T2max and a minimum value T2min of the average value of the thicknesses of the resin base film as measured at 10 adjacent points on a peripheral portion of the resin base film satisfy the relationship T2max - T2min ≤ 6 μm, and the heat seal layer has an average thickness of 25-100 μm.

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Inventors:

KURAGAKI MASAHIRO (JP)
KOGANEMARU AI (JP)
TANAKA YOSHITAKA (JP)
WATANABE SHIGEYUKI (JP)

Application Number:

PCT/JP2020/032374

Publication Date:

March 11, 2021

Filing Date:

August 27, 2020

Export Citation:

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Assignee:

TOYOBO FILM SOLUTIONS LTD (JP)

International Classes:

H01M8/0273; B32B27/08; H01M8/028; H01M8/0284; H01M8/10

Domestic Patent References:

WO2001017048A1

2001-03-08

Foreign References:

JP2014120248A	2014-06-30
JP2009081118A	2009-04-16
JP6285701B2	2018-02-28
JP6375523B2	2018-08-22
JP2017162795A	2017-09-14
JP2014120248A	2014-06-30

Other References: