WO2006126370A1 - 電池ケース用包材及び電池用ケース - Google Patents
電池ケース用包材及び電池用ケース Download PDFInfo
- Publication number
- WO2006126370A1 WO2006126370A1 PCT/JP2006/308994 JP2006308994W WO2006126370A1 WO 2006126370 A1 WO2006126370 A1 WO 2006126370A1 JP 2006308994 W JP2006308994 W JP 2006308994W WO 2006126370 A1 WO2006126370 A1 WO 2006126370A1
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- WIPO (PCT)
- Prior art keywords
- layer
- battery case
- film
- packaging material
- heat
- Prior art date
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- 239000005022 packaging material Substances 0.000 title claims abstract description 60
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 26
- 239000011888 foil Substances 0.000 claims abstract description 25
- 229920006015 heat resistant resin Polymers 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 94
- 238000000465 moulding Methods 0.000 claims description 23
- 229920005989 resin Polymers 0.000 claims description 23
- 239000011347 resin Substances 0.000 claims description 23
- -1 polyethylene terephthalate Polymers 0.000 claims description 21
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 15
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 15
- 239000012790 adhesive layer Substances 0.000 claims description 14
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 8
- 229920001169 thermoplastic Polymers 0.000 claims description 7
- 239000004416 thermosoftening plastic Substances 0.000 claims description 7
- 239000004952 Polyamide Substances 0.000 claims description 5
- 229920002647 polyamide Polymers 0.000 claims description 5
- 229920006302 stretch film Polymers 0.000 claims description 4
- 229920006290 polyethylene naphthalate film Polymers 0.000 claims description 2
- 229920005992 thermoplastic resin Polymers 0.000 abstract description 9
- 239000004677 Nylon Substances 0.000 description 15
- 229920001778 nylon Polymers 0.000 description 15
- 239000004743 Polypropylene Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 239000011112 polyethylene naphthalate Substances 0.000 description 8
- 229920001155 polypropylene Polymers 0.000 description 8
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 7
- 229910001416 lithium ion Inorganic materials 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229910018084 Al-Fe Inorganic materials 0.000 description 1
- 229910018192 Al—Fe Inorganic materials 0.000 description 1
- 239000004823 Reactive adhesive Substances 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000005487 naphthalate group Chemical group 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
- H01M50/1243—Primary casings; Jackets or wrappings characterised by the material having a layered structure characterised by the internal coating on the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—Metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/121—Organic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
- H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
- H01M50/129—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers with two or more layers of only organic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
- H01M50/133—Thickness
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1303—Paper containing [e.g., paperboard, cardboard, fiberboard, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1355—Elemental metal containing [e.g., substrate, foil, film, coating, etc.]
- Y10T428/1359—Three or more layers [continuous layer]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
- Y10T428/2495—Thickness [relative or absolute]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
- Y10T428/2495—Thickness [relative or absolute]
- Y10T428/24967—Absolute thicknesses specified
- Y10T428/24975—No layer or component greater than 5 mils thick
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
- Y10T428/31692—Next to addition polymer from unsaturated monomers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31725—Of polyamide
- Y10T428/31765—Inorganic-containing or next to inorganic-containing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
Definitions
- the present invention relates to a packaging material for a battery case such as a lithium ion secondary battery.
- aluminum is used to include aluminum and its alloys.
- Lithium ion secondary batteries are widely used as a power source for notebook computers, video cameras, mobile phones, electric vehicles, and the like.
- this lithium ion secondary battery one having a structure in which the periphery of the battery body is surrounded by a case is used.
- this packaging material for cases for example, an outer layer having a stretched polyamide film force, an aluminum foil layer, and an inner layer having an unstretched polypropylene film force are bonded and integrated in this order (Patent Document 1). reference).
- the surface of the outer layer film is coated with a fatty acid amide-based slipperiness-imparting component to improve the sliding of the material into the mold during molding (patent Reference 2) and a structure in which the thickness of the outer layer film is increased relative to the thickness of the aluminum foil layer.
- Patent Document 1 Japanese Patent Laid-Open No. 2001-6631
- Patent Document 2 Japanese Patent Laid-Open No. 2002-216714
- the present invention has been made in view of a strong technical background, and it is possible to ensure excellent formability without coating a slipperiness-imparting component and to obtain a sufficient volume-volume ratio.
- An object of the present invention is to provide a battery case packaging material and a battery case.
- the present inventors have conducted intensive research and found that the shrinkage rate of the heat-resistant stretched resin film layer as the outer layer of the packaging material affects the moldability of the packaging material. It came to discover knowledge and came to complete this invention. That is, the present invention provides the following means.
- a battery case comprising a heat resistant stretched resin film layer as an outer layer, a thermoplastic unstretched film layer as an inner layer, and an aluminum foil layer disposed between the two film layers.
- a packaging material for a battery case wherein a heat resistant resin stretch film having a shrinkage rate of 2 to 20% is used as the heat resistant resin stretch film.
- a battery case including a heat-resistant, stretched resin film layer as an outer layer, a thermoplastic unstretched film layer as an inner layer, and an aluminum foil layer disposed between the two film layers
- a heat-resistant, stretched resin film layer as an outer layer
- a thermoplastic unstretched film layer as an inner layer
- an aluminum foil layer disposed between the two film layers
- a biaxially stretched polyamide film having a shrinkage rate of 2 to 20% As the heat-resistant stretched resin film layer, a biaxially stretched polyamide film having a shrinkage rate of 2 to 20%, a biaxially stretched polyethylene naphthalate film having a shrinkage rate of 2 to 20%, or a shrinkage rate of 2 to 20% 2
- the heat-resistant resin stretched film layer has a thickness of 12 to 50 ⁇ m
- the thermoplastic resin unstretched film layer has a thickness of 20 to 80 m
- the aluminum foil layer The battery case packaging material according to any one of items 1 to 3, wherein the thickness of the battery case is 5 to 50 ⁇ m.
- the heat-resistant stretched resin film having a shrinkage rate of 2 to 20% is used as the heat-resistant stretched resin film layer constituting the outer layer. It is excellent in moldability such as overhang forming, and it is possible to form a sharp shape with a deep molding height. In this way, excellent formability can be ensured without coating with a slipperiness-imparting component, so that it is excellent in productivity without having to provide a step for coating the slipperiness-imparting component as in the prior art. In addition, since it is not necessary to make the thickness of the outer layer film particularly thick with respect to the thickness of the aluminum foil layer as in the prior art, a sufficient volume volume ratio can be obtained.
- a biaxially stretched polyamide film having a shrinkage rate of 2 to 20% a biaxially stretched polyethylene having a shrinkage rate of 2 to 20% Naphthalate film or biaxially stretched polyethylene terephthalate film with a shrinkage rate of 2 to 20% is used. Therefore, it is particularly excellent in moldability such as deep drawing and stretch molding, and is sharper and has a higher molding strength. The shape can be molded deeply. In this way, excellent formability can be secured without coating with a slipperiness-imparting component, so that it is excellent in productivity without having to provide a step for coating the slipperiness-imparting component as in the prior art. Further, since it is not necessary to make the thickness of the outer layer film particularly thick with respect to the thickness of the aluminum foil layer as in the prior art, a sufficient volume volume ratio can be obtained.
- FIG. 1 is a cross-sectional view showing one embodiment of a packaging material for a battery case according to the present invention.
- FIG. 2 is a diagram showing an example of a method for producing a battery case packaging material according to the present invention.
- FIG. 1 shows an embodiment of a battery case packaging material (1) according to the present invention.
- This packaging material is used as a packaging material for a lithium ion secondary battery case.
- the packaging material for battery case (1) has a heat-resistant stretched resin film layer (outer layer) (2) laminated on the upper surface of the aluminum foil layer (4) via the first adhesive layer (5).
- a thermoplastic resin unstretched film layer (inner layer) (3) is laminated and integrated on the lower surface of the aluminum foil layer (4) via a second adhesive layer (6). .
- the heat-resistant stretched resin film layer (outer layer) (2) is a member that mainly plays a role of ensuring good moldability as a packaging material, that is, fracture by necking of an aluminum foil during molding. It plays the role of preventing
- a biaxially stretched polyamide film having a shrinkage rate of 2 to 20% a biaxially stretched polyethylene naphthalate having a shrinkage rate of 2 to 20% (PEN )
- PEN biaxially stretched polyethylene naphthalate having a shrinkage rate of 2 to 20%
- PET biaxially stretched polyethylene terephthalate
- the "shrinkage ratio” means the test piece before and after immersion when the test piece (10 cm ⁇ 10 cm) of the heat resistant resin-stretched stretched film (2) is immersed in hot water at 95 ° C for 30 minutes. This is the dimensional change rate in the stretching direction, and is calculated by the following formula.
- shrinkage rate in the case of employing a biaxially stretched film is the average value of the dimensional change rates in the two stretching directions.
- the shrinkage of the heat-resistant reinforced resin stretched film (2) can be controlled, for example, by adjusting the heat setting temperature during stretching.
- the thickness of the heat-resistant stretched resin film layer (2) is set to 12 to 50 ⁇ m.
- thermoplastic resin unstretched film layer (inner layer) (3) has strong corrosiveness used in lithium ion secondary batteries and the like, and has excellent chemical resistance against electrolytes and the like. At the same time, it plays a role of imparting heat sealability to the packaging material.
- thermoplastic resin unstretched film layer (3) is not particularly limited, but includes a group consisting of polyethylene, polypropylene, olefinic copolymers, acid-modified products thereof, and ionomers. It is preferably constituted by an unstretched film composed of at least one selected type of thermoplastic resin.
- the thickness of the thermoplastic resin unstretched film layer (3) is preferably set to 20 to 80 ⁇ m. By setting it to 20 m or more, pinholes can be sufficiently prevented, and by setting it to 80 ⁇ m or less, the amount of resin used can be reduced and the cost can be reduced. In particular, the thickness of the thermoplastic resin unstretched film layer (3) is particularly preferably set to 30 to 50 ⁇ m.
- the heat-resistant, stretched resin film layer (2), the thermoplastic resin-unstretched film layer ( All of 3) may be a single layer or a multilayer.
- the aluminum foil layer (4) plays a role of imparting a gas barrier property to prevent oxygen and moisture from entering the packaging material.
- a foil having a thickness of 5 to 50 m and having a pure A or Al—Fe alloy power is preferably used.
- the first adhesive layer (5) is not particularly limited, and examples thereof include a urethane adhesive layer and an acrylic adhesive layer. Among them, the first adhesive layer (5)
- the urethane-based adhesive layer is formed by a urethane-based two-component reactive adhesive, which makes it possible to perform sharper molding.
- the second adhesive layer (6) is not particularly limited.
- acid-modified polyolefins such as maleic anhydride-modified polyethylene and maleic anhydride-modified polypropylene
- urethane-based adhesive examples thereof include an adhesive layer formed of fat, acrylic resin, resin containing thermoplastic elastomer, and the like.
- These second adhesive layers (6) are formed, for example, by laminating an adhesive resin film (for example, acid-modified polyolefin film) on one side of the thermoplastic resin unstretched film layer (3). .
- the battery case packaging material (1) of the present invention is a force suitably used as a lithium ion secondary battery case packaging material that requires a high volumetric energy density. is not.
- a battery case can be obtained by molding (deep drawing molding, stretch molding, etc.) the battery case packaging material (1) of the present invention.
- the maleic anhydride-modified polypropylene layer (21) with a thickness of 3 m and the thickness
- Example 1 except that a biaxially stretched film made of nylon 15 / ⁇ ⁇ and a shrinkage rate of 15% was used instead of the biaxially stretched film of nylon 25m thick and shrinkage 10%. In the same manner, a battery case packaging material was obtained.
- Example 1 except that a biaxially stretched film made of nylon 15 / ⁇ ⁇ and a shrinkage rate 7% was used instead of the biaxially stretched film of nylon 25m thick and shrinkage 10%. In the same manner, a battery case packaging material was obtained.
- Example 1 except that a biaxially stretched film with a thickness of 25 / ⁇ ⁇ and a shrinkage rate of 1% was used instead of the biaxially stretched film with a nylon force of 25 m and a shrinkage rate of 10%. In the same manner, a battery case packaging material was obtained.
- Example 1 except that a biaxially stretched film having a thickness of 25 m and a shrinkage rate of 25% was used instead of a biaxially stretched film having a nylon force of 25 m and a shrinkage rate of 10%. In the same manner, a battery case packaging material was obtained.
- a biaxially stretched film made of polyethylene terephthalate (PET) with a thickness of 12 m and shrinkage of 18% was used instead of a biaxially stretched film made of nylon with a thickness of 25 ⁇ m and shrinkage of 10%.
- a battery case packaging material was obtained in the same manner as in Example 1. ⁇ Example 5>
- a biaxially stretched film made of polyethylene terephthalate (PET) with a thickness of 20 m and a shrinkage rate of 5% was used instead of a biaxially stretched film made of nylon with a thickness of 25 ⁇ m and a shrinkage rate of 10%.
- a battery case packaging material was obtained in the same manner as in Example 1.
- a biaxially stretched film with a thickness of 25 ⁇ m and a shrinkage rate of 10% made of nylon a biaxially stretched film with a thickness of 12 m with a polyethylene terephthalate (PET) force and a shrinkage rate of 8% was used.
- PET polyethylene terephthalate
- a biaxially stretched film made of polyethylene terephthalate (PET) with a thickness of 12 m and a shrinkage rate of 25% was used instead of a biaxially stretched film made of nylon with a thickness of 25 ⁇ m and shrinkage rate of 10%.
- a battery case packaging material was obtained in the same manner as in Example 1.
- a biaxially stretched film made of polyethylene naphthalate (PEN) with a thickness of 25 ⁇ m and a shrinkage rate of 10% was used in place of a biaxially stretched film made of polyethylene naphthalate (PEN).
- PEN polyethylene naphthalate
- a biaxially stretched film made of polyethylene naphthalate (PEN) with a thickness of 15 ⁇ m and shrinkage of 15% was used instead of a biaxially stretched film of nylon made of 25 ⁇ m and shrinkage of 10%.
- PEN polyethylene naphthalate
- a biaxially stretched film made of polyethylene naphthalate (PEN) with a thickness of 25 ⁇ m and shrinkage of 1% was used instead of a biaxially stretched film of nylon 25 ⁇ m and shrinkage of 10%.
- PEN polyethylene naphthalate
- a biaxially stretched film made of polyethylene naphthalate (PEN) with a thickness of 25 ⁇ m and shrinkage of 25% was used instead of a biaxially stretched film made of nylon with a thickness of 25 ⁇ m and shrinkage of 10%.
- PEN polyethylene naphthalate
- the packaging material was made into a blank shape of 110 x 180mm, and deep drawing was performed in a single step using a straight mold free of molding height, and the moldability was evaluated for each molding height (6mm, 5mm, 4mm, 3mm). . “O” indicates that no crack was generated at all, “ ⁇ ” indicates that a crack occurred in a very small part, but “ ⁇ ” indicates that almost no crack occurred, and “X” indicates that the crack occurred almost entirely.
- the punch shapes used were 60mm long side, 45mm short side, corner R: 1-2mm, punch shoulder R: 1-2mm, and die shoulder R: 0.5mm.
- the battery case packaging materials of Examples 1 to 9 of the present invention are excellent in moldability, are sharper, have a higher molding height, and are molded into a shape. At the same time, no peeling of the outer surface layer occurred.
- the packaging material for a battery case of the present invention is used as a packaging material for a case of a battery such as a lithium ion secondary battery.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/915,589 US8129008B2 (en) | 2005-05-27 | 2006-04-28 | Packaging material for battery case and battery case |
DE112006001372.6T DE112006001372B4 (de) | 2005-05-27 | 2006-04-28 | Material für ein Batteriegehäuse und Batteriegehäuse |
KR1020077027444A KR101230734B1 (ko) | 2005-05-27 | 2006-04-28 | 전지 케이스용 포장재 및 전지용 케이스 |
US13/299,017 US8541080B2 (en) | 2005-05-27 | 2011-11-17 | Packaging material for battery case and battery case |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005154883A JP5519895B2 (ja) | 2005-05-27 | 2005-05-27 | 電池ケース用包材及び電池用ケース |
JP2005-154883 | 2005-05-27 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/915,589 A-371-Of-International US8129008B2 (en) | 2005-05-27 | 2006-04-28 | Packaging material for battery case and battery case |
US13/299,017 Continuation US8541080B2 (en) | 2005-05-27 | 2011-11-17 | Packaging material for battery case and battery case |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006126370A1 true WO2006126370A1 (ja) | 2006-11-30 |
Family
ID=37451798
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/308994 WO2006126370A1 (ja) | 2005-05-27 | 2006-04-28 | 電池ケース用包材及び電池用ケース |
Country Status (6)
Country | Link |
---|---|
US (2) | US8129008B2 (ja) |
JP (1) | JP5519895B2 (ja) |
KR (1) | KR101230734B1 (ja) |
CN (1) | CN100547826C (ja) |
DE (1) | DE112006001372B4 (ja) |
WO (1) | WO2006126370A1 (ja) |
Cited By (3)
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US20090110888A1 (en) * | 2007-10-31 | 2009-04-30 | Sam Edward Wuest | Barrier Packaging Webs Having Metallized Non-Oriented Film |
WO2011132545A1 (ja) * | 2010-04-23 | 2011-10-27 | 大倉工業株式会社 | 電池又はキャパシタ用外包材、およびその製造方法 |
JPWO2020027089A1 (ja) * | 2018-07-31 | 2021-08-26 | ユニチカ株式会社 | ポリアミド系積層フィルム及びその製造方法 |
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- 2006-04-28 DE DE112006001372.6T patent/DE112006001372B4/de active Active
- 2006-04-28 CN CNB2006800182910A patent/CN100547826C/zh active Active
- 2006-04-28 WO PCT/JP2006/308994 patent/WO2006126370A1/ja active Application Filing
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090110888A1 (en) * | 2007-10-31 | 2009-04-30 | Sam Edward Wuest | Barrier Packaging Webs Having Metallized Non-Oriented Film |
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Also Published As
Publication number | Publication date |
---|---|
KR101230734B1 (ko) | 2013-02-07 |
US8129008B2 (en) | 2012-03-06 |
KR20080021612A (ko) | 2008-03-07 |
JP2006331897A (ja) | 2006-12-07 |
CN100547826C (zh) | 2009-10-07 |
JP5519895B2 (ja) | 2014-06-11 |
DE112006001372B4 (de) | 2017-07-27 |
DE112006001372T5 (de) | 2008-04-10 |
US20090130407A1 (en) | 2009-05-21 |
CN101185180A (zh) | 2008-05-21 |
US8541080B2 (en) | 2013-09-24 |
US20120064319A1 (en) | 2012-03-15 |
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