JP2002075298A - Complex packing material for polymer battery and its manufacturing method as well as polymer battery using said complex packing material - Google Patents

Complex packing material for polymer battery and its manufacturing method as well as polymer battery using said complex packing material

Info

Publication number
JP2002075298A
JP2002075298A JP2000266462A JP2000266462A JP2002075298A JP 2002075298 A JP2002075298 A JP 2002075298A JP 2000266462 A JP2000266462 A JP 2000266462A JP 2000266462 A JP2000266462 A JP 2000266462A JP 2002075298 A JP2002075298 A JP 2002075298A
Authority
JP
Japan
Prior art keywords
aluminum foil
polymer battery
metal
packaging material
maleated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2000266462A
Other languages
Japanese (ja)
Inventor
Tsutomu Usami
勉 宇佐見
Hiromichi Hatori
広道 羽鳥
Hisao Sakado
久夫 坂戸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Light Metal Industries Ltd
Sumikei Aluminum Foil Co Ltd
Original Assignee
Sumitomo Light Metal Industries Ltd
Sumikei Aluminum Foil Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Light Metal Industries Ltd, Sumikei Aluminum Foil Co Ltd filed Critical Sumitomo Light Metal Industries Ltd
Priority to JP2000266462A priority Critical patent/JP2002075298A/en
Publication of JP2002075298A publication Critical patent/JP2002075298A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

Landscapes

  • Sealing Battery Cases Or Jackets (AREA)
  • Secondary Cells (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an excellent complex packing material for a polymer battery excellent in heat sealing property and adhesiveness and air-tightness with an electrode terminal in which an aluminum foil and a thermoplastic resin layer do not peeled off from each other even in contact with electrolyte solution, and which has excellent electrolyte resistance characteristics and solvent resistance. SOLUTION: The complex packing material for the polymer battery is made of a complex aluminum foil with an aluminum foil, a maleic anhydride degenerative polypropylene layer (malleinized PP), and a thermoplastic resin layer laminated in that order, the aluminum foil and the malleinized PP bonded together through a surface treatment layer including metal selected from chromium, zirconium, titanium, and silicon, with the above metal adhered to the aluminum surface by an adhesion amount of 1 to 100 mg/m2. In case of adhesion through a surface treatment layer including two or more kinds of metal, an adhesion amount of that metal with the most adhesion amount on the surface of the aluminum foil is 1 to 100 mg/m2.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、ポリマー電池用複
合包材、詳しくは、複合アルミニウム箔からなるポリマ
ー電池用複合包材およびその製造方法、ならびに該複合
包材を使用したポリマー電池に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite wrapping material for a polymer battery, and more particularly, to a composite wrapping material for a polymer battery comprising a composite aluminum foil, a method for producing the same, and a polymer battery using the composite wrapping material.

【0002】[0002]

【従来の技術】ポリマー電池は、携帯電話、ノート型パ
ソコン、ビデオカメラなどの電子機器の電源に使用され
ているリチウムイオン二次電池のうち、導電性ポリマー
などの固体、半固体の電解質を用いた電池はポリマー電
池と呼ばれており、電解液としてPC(プロピレンカー
ボネート)、DEC(ジエチレンカーボネート)、EC
(エチレンカーボネート)、γ−BL(ガンマブチロラ
クトン)などの非水溶媒にLiBF4 、LiPF6 など
の錯フッ化物を添加したものを使用する通常のリチウム
イオン二次電池に比べて、薄肉化、軽量化の達成が可能
で、電解液の液漏れなどの危険性も少なく安全性の面で
も優れているという特徴を有し、今後の発展が期待され
ている。
2. Description of the Related Art Polymer batteries use a solid or semi-solid electrolyte such as a conductive polymer among lithium ion secondary batteries used for power supplies of electronic devices such as mobile phones, notebook computers and video cameras. The battery was called a polymer battery, and PC (propylene carbonate), DEC (diethylene carbonate), EC
(Ethylene carbonate), γ-BL (gamma-butyrolactone), and the like, which are thinner and lighter than ordinary lithium ion secondary batteries using a complex fluoride such as LiBF 4 or LiPF 6 added to a non-aqueous solvent. It is characterized by the fact that it is possible to achieve a high degree of safety, has a low risk of electrolyte leakage and is excellent in terms of safety, and is expected to develop in the future.

【0003】ポリマー電池のケースとしては、従来、ポ
リプロピレンなどの熱可塑性樹脂をヒートラミネートに
よりアルミニウム箔に貼り合わせた複合アルミニウム箔
から形成した包材をヒートシールしてなるものが使用さ
れているが、電解質に前記のLiBF4 、LiPF6
どの錯フッ化物を添加したPC、DEC、EC、γ−B
Lなどの溶剤を含有するものが用いられるため、とくに
溶剤中の錯フッ化物の一部が電極や包材表面に吸着した
水と反応して生じるフッ化水素酸(HF)が、ヒートシ
ール性をもつ熱可塑性樹脂層を透過してアルミニウム箔
の表面に達し、アルミニウム箔を腐食させるため、アル
ミニウム箔と熱可塑性樹脂層との密着性が低下し、熱可
塑性樹脂層の剥離に至ることもある。
Conventionally, as a case of a polymer battery, a case obtained by heat-sealing a packaging material formed of a composite aluminum foil in which a thermoplastic resin such as polypropylene is bonded to an aluminum foil by heat lamination has been used. PC, DEC, EC, γ-B in which complex fluorides such as LiBF 4 and LiPF 6 are added to the electrolyte
Since a solvent containing a solvent such as L is used, hydrofluoric acid (HF), which is generated when a part of the complex fluoride in the solvent reacts with water adsorbed on the surface of the electrode or the packaging material, has a heat sealing property. To reach the surface of the aluminum foil through the thermoplastic resin layer with the aluminum foil and corrode the aluminum foil, the adhesion between the aluminum foil and the thermoplastic resin layer is reduced, and the thermoplastic resin layer may be peeled off .

【0004】上記の問題を解決するために、先に、発明
者の一部は、アルミニウム箔、マレイン化PP層および
押出コートポリプロピレン層の順で積層された複合アル
ミニウム箔からなるポリマー電池用包装材料を提案した
(特願平11−275827号)。この包材によれば、
アルミニウム箔と熱可塑性樹脂層との間にマレイン化P
Pを介挿させることにより、耐電解液特性、耐溶剤性が
改善され、フッ化水素酸の透過によるアルミニウム箔と
熱可塑性樹脂層との密着性の低下を低減することができ
るが、使用条件によっては、なお、耐電解液特性、耐溶
剤性が十分でない場合があり、アルミニウム箔と熱可塑
性樹脂層との間の密着性低下による剥離が生じることが
経験されている。
[0004] In order to solve the above problems, some of the inventors have previously described a packaging material for a polymer battery comprising a composite aluminum foil laminated in the order of an aluminum foil, a maleated PP layer and an extrusion-coated polypropylene layer. (Japanese Patent Application No. 11-275827). According to this packaging material,
Maleated P between aluminum foil and thermoplastic resin layer
By interposing P, the electrolyte resistance and the solvent resistance are improved, and the decrease in the adhesion between the aluminum foil and the thermoplastic resin layer due to the permeation of hydrofluoric acid can be reduced. In some cases, the electrolyte resistance and the solvent resistance may not be sufficient, and it has been experienced that peeling occurs due to a decrease in adhesion between the aluminum foil and the thermoplastic resin layer.

【0005】[0005]

【発明が解決しようとする課題】本発明は、複合アルミ
ニウム箔からなるポリマー電極用包材における上記の問
題点を解消するために、上記の特願平11−27582
7号に記載されるポリマー電極用包装材料をベースと
し、ポリマー電池用包装材に要求される特性、とくに耐
電解液特性、耐溶剤性と複合アルミニウム箔の層間の密
着性との関係を再検討した結果としてなされたものであ
り、その目的は、一層優れた耐電解液特性、耐溶剤性を
そなえ、電解液に接触してもアルミニウム箔と熱可塑性
樹脂層とが剥離することがなく、ヒートシール性、電極
端子との接着性、密着性に優れたポリマー電池用複合包
材およびその製造方法、ならびに該複合包材を使用した
ポリマー電池を提供することにある。
SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems in a polymer electrode packaging material made of a composite aluminum foil.
Based on the polymer electrode packaging material described in No. 7, the characteristics required for the polymer battery packaging material, especially the relationship between the electrolyte resistance, the solvent resistance, and the adhesion between the layers of the composite aluminum foil are reviewed. The purpose is to provide better electrolyte resistance and solvent resistance, and the aluminum foil and thermoplastic resin layer do not peel off even when in contact with the electrolyte. An object of the present invention is to provide a composite packaging material for a polymer battery having excellent sealing properties, adhesion to electrode terminals, and adhesion, a method for producing the same, and a polymer battery using the composite packaging material.

【0006】[0006]

【課題を解決するための手段】上記の目的を達成するた
めの本発明の請求項1によるポリマー電池用複合包材
は、アルミニウム箔、無水マレイン酸変性ポリプロピレ
ン層(マレイン化PP)および熱可塑性樹脂層の順で積
層された複合アルミニウム箔からなり、前記アルミニウ
ム箔とマレイン化PPとがクロム、ジルコニウム、チタ
ン、ケイ素のうちから選ばれた金属を含む表面処理層を
介して接着され、該金属がアルミニウムの表面に1〜1
00mg/m2 の付着量で付着していることを特徴とす
る。
According to a first aspect of the present invention, there is provided a composite packaging material for a polymer battery comprising an aluminum foil, a maleic anhydride-modified polypropylene layer (maleated PP), and a thermoplastic resin. A composite aluminum foil laminated in the order of layers, wherein the aluminum foil and the maleated PP are bonded via a surface treatment layer containing a metal selected from chromium, zirconium, titanium, and silicon, and the metal is 1-1 on aluminum surface
It is characterized in that it is attached in an amount of 00 mg / m 2 .

【0007】請求項2によるポリマー電池用複合包材
は、アルミニウム箔、マレイン化PPおよび熱可塑性樹
脂層の順で積層された複合アルミニウム箔からなり、前
記アルミニウム箔とマレイン化PPとがクロム、ジルコ
ニウム、チタン、ケイ素のうちの2種以上の金属を含む
表面処理層を介して接着され、該金属がアルミニウム箔
の表面に付着しており、アルミニウム箔の表面に付着し
ている金属のうち最も付着量の多い金属の付着量が1〜
100mg/m2 であることを特徴とする。
According to a second aspect of the present invention, there is provided a composite wrapping material for a polymer battery, comprising a composite aluminum foil laminated in the order of an aluminum foil, a maleated PP and a thermoplastic resin layer, wherein the aluminum foil and the maleated PP are chromium, zirconium. , Titanium, and silicon are bonded through a surface treatment layer containing two or more types of metals, the metal is attached to the surface of the aluminum foil, and the metal is most attached to the surface of the aluminum foil. The amount of metal deposition is 1 to
It is characterized in that it is 100 mg / m 2 .

【0008】請求項3によるポリマー電池用複合包材
は、請求項1〜2において、前記ポリマー電池用複合包
材のアルミニウム箔面に、熱可塑性樹脂フィルム層を設
けたことを特徴とする。
A composite packaging material for a polymer battery according to a third aspect is characterized in that, in the first and second aspects, a thermoplastic resin film layer is provided on an aluminum foil surface of the composite packaging material for a polymer battery.

【0009】請求項4によるポリマー電池用複合包材の
製造方法は、アルミニウム箔の表面を、クロム、ジルコ
ニウム、チタン、ケイ素のうちの1種または2種以上の
金属の金属塩を含む塗布型表面処理剤で処理し、加熱乾
燥することにより、アルミニウム箔の表面にクロム、ジ
ルコニウム、チタン、ケイ素のうちの1種または2種以
上が付着した表面処理層を形成して、アルミニウム箔の
表面に付着している前記金属のうち最も付着量の多い金
属の付着量を1〜100mg/m2 とし、ついで、表面
処理層を形成したアルミニウム箔の表面にマレイン化P
P、熱可塑性樹脂層の順に積層することを特徴とする。
According to a fourth aspect of the present invention, in the method for producing a composite packaging material for a polymer battery, the surface of the aluminum foil is coated with a metal salt of one or more of chromium, zirconium, titanium and silicon. By treating with a treating agent and drying by heating, a surface treatment layer in which one or more of chromium, zirconium, titanium, and silicon adheres to the surface of the aluminum foil and adheres to the surface of the aluminum foil The amount of the metal that has the largest amount of adhesion is 1-100 mg / m 2, and then the surface of the aluminum foil on which the surface treatment layer is formed is
It is characterized in that P and a thermoplastic resin layer are laminated in this order.

【0010】また、請求項5によるポリマー電池は、請
求項1〜3のいずれかに記載のポリマー電池用複合包材
をヒートシールしてなることを特徴とする。
A polymer battery according to a fifth aspect is characterized in that the composite packaging material for a polymer battery according to any one of the first to third aspects is heat-sealed.

【0011】[0011]

【発明の実施の形態】本発明のポリマー電池用複合包材
においては、図1に示すように、アルミニウム箔3、マ
レイン化PP層4、熱可塑性樹脂層5の順に積層された
複合アルミニウム箔であって、アルミニウム箔3とマレ
イン化PPとがクロム、ジルコニウム、チタン、ケイ素
のうちから選ばれた金属を含む表面処理層6を介して接
着された複合アルミニウム箔2により複合包材1を構成
する。
BEST MODE FOR CARRYING OUT THE INVENTION In the composite wrapping material for a polymer battery of the present invention, as shown in FIG. 1, a composite aluminum foil laminated in the order of an aluminum foil 3, a maleated PP layer 4, and a thermoplastic resin layer 5 is used. The composite packaging material 1 is constituted by the composite aluminum foil 2 in which the aluminum foil 3 and the maleated PP are bonded via a surface treatment layer 6 containing a metal selected from chromium, zirconium, titanium and silicon. .

【0012】アルミニウム箔3としては、厚さが6〜3
00μmの純アルミニウム系のアルミニウム箔(JIS
H4160 1N30など)、Al−Fe合金箔など
の調質O〜H18のものが使用される。
The aluminum foil 3 has a thickness of 6 to 3 mm.
00μm pure aluminum-based aluminum foil (JIS
H4160 1N30, etc.), and heat-treated O-H18 materials such as Al-Fe alloy foils are used.

【0013】アルミニウム箔3の表面に形成される表面
処理層6は、アルミニウム箔の表面をクロム、ジルコニ
ウム、チタン、ケイ素のうちから選ばれた1種または2
種以上の金属の金属塩を含む塗布型表面処理剤で処理す
ることにより得られる。塗布型表面処理剤は、前記金属
塩の他、還元剤、無機酸、有機化合物などを組合わせて
調製される。
The surface treatment layer 6 formed on the surface of the aluminum foil 3 is made of a material selected from the group consisting of chromium, zirconium, titanium and silicon.
It is obtained by treating with a coating type surface treatment agent containing a metal salt of at least one kind of metal. The coating type surface treatment agent is prepared by combining a reducing agent, an inorganic acid, an organic compound, and the like in addition to the metal salt.

【0014】金属塩としては、6価クロム(Cr
3 )、3価クロム(KCr(SO4 2)のクロム酸
塩、ジルコニウム、チタン、ケイ素のフッ化物の塩(Z
rF4 2- 、TiF6 2- 、SiF6 2- )、ケイ酸塩などが
使用され、還元剤としては、アルコール類、多糖類など
で水酸基を有する有機化合物、例えばタンニン酸、メタ
ノール、ヒドラジン、ショ糖など、無機酸としては、リ
ン酸、フッ化水素酸、ケイ酸など、有機化合物として
は、ポリアクリル酸、ポリメタクリル酸、アクリル酸お
よびメタクリル酸の共重合物、セルロース、ポリビニル
アルコールなどが挙げられる。耐食性向上のために、気
相シリカ、コロイダルシリカなどのシリカ粒子を含有さ
せることもできる。なお、本発明で使用する塗布型表面
処理剤としては、特開2000−119865号公報に
記載される薬剤が好適に使用し得る。
As the metal salt, hexavalent chromium (Cr
O 3 ) trivalent chromium (KCr (SO 4 ) 2 ) chromate, zirconium, titanium and silicon fluoride salts (Z
rF 4 2− , TiF 6 2− , SiF 6 2− ), silicate and the like are used. As the reducing agent, organic compounds having a hydroxyl group such as alcohols and polysaccharides, such as tannic acid, methanol, hydrazine, Examples of inorganic acids, such as sucrose, include phosphoric acid, hydrofluoric acid, and silicic acid. Examples of organic compounds include polyacrylic acid, polymethacrylic acid, copolymers of acrylic acid and methacrylic acid, cellulose, and polyvinyl alcohol. No. For improving corrosion resistance, silica particles such as gas-phase silica and colloidal silica can be contained. In addition, as the coating type surface treatment agent used in the present invention, the agent described in JP-A-2000-119865 can be suitably used.

【0015】アルミニウム箔の表面に前記表面処理層を
介して積層されるマレイン化PP層4は、耐電解液特
性、耐溶剤性の役割を果たすものであり、マレイン化P
Pのアルミニウム箔3面へのコーティングは、トルエ
ン、キシレンなど、芳香族有機溶媒に溶解または分散し
たマレイン化PPをアルミニウム箔の表面に塗布するこ
とにより行われる。塗布方法としては、量産性の観点か
らはグラビアコート法が好ましいが、その他、ロールコ
ート法、カーテンフロー法、浸漬法なども適用される。
塗布量は0.2〜10g/m2 が好ましく、0.2g/
2 未満の塗布では均一に塗布するのが難しく、塗布量
が10g/m2 を越えると密着性向上の効果が飽和する
から、10g/m2 を越える塗布は経済的にも不利とな
る。
The maleated PP layer 4 laminated on the surface of the aluminum foil with the above-mentioned surface treatment layer plays the role of electrolytic solution resistance and solvent resistance.
P is coated on the surface of the aluminum foil 3 by applying maleated PP dissolved or dispersed in an aromatic organic solvent such as toluene or xylene to the surface of the aluminum foil. As a coating method, a gravure coating method is preferable from the viewpoint of mass productivity, but in addition, a roll coating method, a curtain flow method, a dipping method, and the like are also applied.
The coating amount is preferably 0.2 to 10 g / m 2 , and 0.2 g / m 2
If the coating amount is less than m 2 , it is difficult to apply uniformly, and if the coating amount exceeds 10 g / m 2 , the effect of improving the adhesion is saturated. Therefore, the coating amount exceeding 10 g / m 2 is economically disadvantageous.

【0016】マレイン化PP層4への熱可塑性樹脂層5
の積層は、ポリエチレン、ポリプロピレン、アイオノマ
ー樹脂などのフィルムを熱ラミネート法により熱圧着す
ることにより行われ、あるいは、溶融した樹脂をダイス
から押出して成膜する押出コート法により行われる。熱
可塑性樹脂層5は、耐熱ヒートシール性、電極端子との
接着性に優れ、ポリマー電池用複合包材1に、固体電解
質、電極を包み、電極端子を含めて包材をヒートシール
ためのヒートシール層としての役割を果たす。熱可塑性
樹脂層5は15〜100μm厚さで形成するのが好まし
い。
The thermoplastic resin layer 5 on the maleated PP layer 4
Is performed by thermocompression bonding a film of polyethylene, polypropylene, ionomer resin, or the like by a heat laminating method, or by an extrusion coating method in which a molten resin is extruded from a die to form a film. The thermoplastic resin layer 5 is excellent in heat-resistant heat sealability and adhesiveness to electrode terminals. The composite packaging material 1 for a polymer battery wraps the solid electrolyte and the electrode, and heats the package material including the electrode terminals for heat sealing. Plays a role as a seal layer. The thermoplastic resin layer 5 is preferably formed with a thickness of 15 to 100 μm.

【0017】ポリマー電池用複合包材においては、アル
ミニウム箔3の表面(電池の外側)に、ナイロンフィル
ムやポリエチレンテレフタレートフィルムなど、熱可塑
性樹脂の耐熱性二軸延伸フィルム層(例えば厚さ6〜1
00μm)を、ウレタン系接着剤などの接着剤でドライ
ラミネートすることにより形成してもよく、熱可塑性樹
脂フィルムの形成により耐突き破り性を向上させること
ができる。
In the composite packaging material for a polymer battery, a heat-resistant biaxially stretched film layer (for example, having a thickness of 6 to 1) of a thermoplastic resin such as a nylon film or a polyethylene terephthalate film is formed on the surface of the aluminum foil 3 (outside of the battery).
(00 μm) may be formed by dry lamination with an adhesive such as a urethane-based adhesive, and the formation of a thermoplastic resin film can improve puncture resistance.

【0018】本発明のポリマー電池用複合包材の製造に
ついて説明すると、まず、アルミニウム箔を、必要に応
じて脱脂、洗浄、下地処理した後、前記のように調製さ
れた塗布型表面処理剤をロールコート法、グラビアコー
ト法、浸漬法などを適用して塗布する。塗布温度は、と
くに限定されないが、室温〜40℃の温度で行うのが好
ましい。塗布後、アルミニウム箔の最高温度が60〜2
50℃の温度に達するように加熱して乾燥する。60℃
未満では十分な造膜ができず、250℃を越えると十分
な密着性付与効果が得られなくなる。
The production of the composite wrapping material for a polymer battery of the present invention will be described. First, after the aluminum foil is degreased, washed and ground-treated as required, the coating type surface treatment agent prepared as described above is used. Coating is performed by applying a roll coating method, a gravure coating method, a dipping method, or the like. The application temperature is not particularly limited, but it is preferable to perform the application at a temperature of room temperature to 40 ° C. After coating, the maximum temperature of the aluminum foil is 60-2
Heat and dry to reach a temperature of 50 ° C. 60 ° C
If the temperature is less than 250 ° C., a sufficient effect of imparting adhesion cannot be obtained.

【0019】アルミニウム箔の表面を、クロム、ジルコ
ニウム、チタン、ケイ素のうちから選ばれた金属の金属
塩を含む塗布型表面処理剤で処理することにより、アル
ミニウム箔の表面にクロム、ジルコニウム、チタン、ケ
イ素のうちの1種または2種以上が付着した表面処理層
が形成されるが、処理後に、アルミニウム箔の表面に付
着している前記金属のうち最も付着量の多い金属の付着
量が1〜100mg/m2 となるように塗布量を選択す
るのが好ましい。1mg/m2 未満では十分な密着性が
得られず、100mg/m2 を越えると、密着性向上効
果が飽和するため、100mg/m2 を越える塗布は経
済的にも不利となる。
By treating the surface of the aluminum foil with a coating type surface treating agent containing a metal salt of a metal selected from chromium, zirconium, titanium and silicon, the surface of the aluminum foil is treated with chromium, zirconium, titanium, A surface treatment layer to which one or two or more of silicon adheres is formed. After the treatment, the amount of metal having the largest amount of adhesion among the metals adhering to the surface of the aluminum foil is 1 to 1. It is preferable to select a coating amount so as to be 100 mg / m 2 . If it is less than 1 mg / m 2 , sufficient adhesiveness cannot be obtained, and if it exceeds 100 mg / m 2 , the effect of improving the adhesiveness is saturated, so that coating exceeding 100 mg / m 2 is economically disadvantageous.

【0020】マレイン化PP粒子を溶解または分散させ
たコーティング剤を調製して、マレイン化PPを、前記
にように、グラビアコート法などにより塗布し、180
〜250℃程度の温度で5〜10秒程度乾燥して、アル
ミニウム箔の表面に表面処理層を介してマレイン化PP
層4を形成する。
A coating agent is prepared by dissolving or dispersing the maleated PP particles, and the maleated PP is applied by the gravure coating method or the like as described above,
It is dried at a temperature of about 250 ° C. for about 5 to 10 seconds, and the maleated PP is formed on the surface of the aluminum foil through a surface treatment layer.
The layer 4 is formed.

【0021】つぎに、マレイン化PP層4に、ポリエチ
レン、ポリプロピレン、アイオノマー樹脂などのフィル
ムを熱ラミネート法により熱圧着、あるいは、溶融した
樹脂を押出コート法によりダイスから押出して成膜する
ことにより、熱可塑性樹脂層5を積層する。
Next, a film of polyethylene, polypropylene, ionomer resin or the like is thermocompression-bonded to the maleated PP layer 4 by a heat laminating method, or the molten resin is extruded from a die by an extrusion coating method to form a film. The thermoplastic resin layer 5 is laminated.

【0022】得られた複合アルミニウム箔2に、必要に
応じて、アルミニウム箔3の外面(電池の外側)に、ウ
レタン系の接着剤を介してナイロンフィルムやポリエチ
レンテレフタレートフィルムなどの熱可塑性樹脂フィル
ムをドライラミネートする。
If necessary, a thermoplastic resin film such as a nylon film or a polyethylene terephthalate film may be applied to the outer surface of the aluminum foil 3 (outside of the battery) via the urethane-based adhesive. Dry laminate.

【0023】本発明のポリマー電池用複合包材を、ポリ
マー電池の包装材として使用する場合には、Al、Cu
またはNiからなる電極板の両面にマレイン化PP層を
被覆した電極端子を適用し、本発明の複合包材で電解質
を挟むとともに、当該複合包材で電極端子をヒートシー
ルするのが好ましく、この構成により、ヒートシール部
における複合包材と電極端子の接着強度を高めることが
できる。
When the composite packaging material for a polymer battery of the present invention is used as a packaging material for a polymer battery, Al, Cu
Alternatively, it is preferable to apply an electrode terminal coated with a maleated PP layer on both surfaces of an electrode plate made of Ni, sandwich the electrolyte with the composite packaging material of the present invention, and heat seal the electrode terminal with the composite packaging material. According to the configuration, the adhesive strength between the composite packaging material and the electrode terminal in the heat seal portion can be increased.

【0024】[0024]

【実施例】以下、本発明の実施例を比較例と対比して説
明する。なお、本実施例は、本発明の好ましい一実施態
様を説明するためのものであって、これにより本発明が
制限されるものではない。
Hereinafter, examples of the present invention will be described in comparison with comparative examples. It should be noted that the present example is for describing a preferred embodiment of the present invention, and the present invention is not limited thereto.

【0025】実施例1 アルミニウム箔(JIS H4160、8021、調質
O材、厚さ50μm)の一方の面(艶面)に、塗布型表
面処理剤をロールコート法により塗布し、200℃の温
度で1分間加熱、乾燥することにより表面処理層を形成
した。塗布型表面処理剤の種類(含有金属)および当該
金属の付着量を表1に示す。
Example 1 A coating type surface treatment agent was applied to one surface (glossy surface) of an aluminum foil (JIS H4160, 8021, tempered O material, thickness 50 μm) by a roll coating method, and the temperature of 200 ° C. For 1 minute and dried to form a surface treatment layer. Table 1 shows the types of the coating-type surface treatment agents (containing metals) and the amounts of the attached metals.

【0026】ついで、表面処理層を介して、マレイン化
PPを乾燥塗布量が1g/m2 となるようロールコート
法により塗布し、200℃で30秒間乾燥して、マレイ
ン化PP層を形成し、さらに、マレイン化PP層上にポ
リプロピレンフィルム(厚さ40μm)を熱圧着するこ
とにより積層して複合アルミニウム箔を得た。
Next, the maleated PP is applied via a surface treatment layer by a roll coating method so that the dry coating amount is 1 g / m 2, and dried at 200 ° C. for 30 seconds to form a maleated PP layer. Further, a polypropylene film (thickness: 40 μm) was laminated on the maleated PP layer by thermocompression bonding to obtain a composite aluminum foil.

【0027】得られた複合アルミニウム箔(試験材)を
15mm幅の短冊に切断して接着試験片を作製した。電
解液として、ECとDECの混合溶媒(混合比は、容積
比でEC:DEC=1:1)にLiPF6 を1モル/リ
ットル溶解したものを使用した。接着試験片を、60℃
の電解液中に浸漬し、アルミニウム箔とポリプロピレン
フィルム層が剥離するまでの日数を調査した。結果を表
1に示す。
The obtained composite aluminum foil (test material) was cut into a strip having a width of 15 mm to prepare an adhesive test piece. As the electrolytic solution, a solution obtained by dissolving 1 mol / liter of LiPF 6 in a mixed solvent of EC and DEC (the mixing ratio was EC: DEC = 1: 1 by volume ratio) was used. Adhesion test piece
And the number of days until the aluminum foil and the polypropylene film layer were peeled off was examined. Table 1 shows the results.

【0028】表1にみられるように、本発明に従う複合
アルミニウム箔からなる複合包材によれば、層間、とく
にアルミニウム箔とマレイン化PPとの接着性が良好な
ため剥離が生じ難く、優れた耐電解液特性、耐溶剤性を
そなえていることが認められた。
As can be seen from Table 1, according to the composite packaging material comprising the composite aluminum foil according to the present invention, the adhesion between the layers, especially the aluminum foil and the maleated PP is good, so that the peeling does not easily occur, so that it is excellent. It was confirmed that the electrolyte solution and the solvent resistance were provided.

【0029】[0029]

【表1】 [Table 1]

【0030】比較例1 アルミニウム箔(JIS H4160、8021、調質
O材、厚さ50μm)の一方の面(艶面)に、塗布型表
面処理剤をロールコート法により塗布し、200℃の温
度で1分間加熱、乾燥することにより表面処理層を形成
した。塗布型表面処理剤の種類(含有金属)および当該
金属の付着量を表2に示す。
Comparative Example 1 A coating type surface treating agent was applied to one surface (glossy surface) of an aluminum foil (JIS H4160, 8021, tempered O material, thickness 50 μm) by a roll coating method, and the temperature was 200 ° C. For 1 minute and dried to form a surface treatment layer. Table 2 shows the types of the coating surface treatment agents (metals contained) and the amounts of the metals attached.

【0031】ついで、表面処理層を介して、マレイン化
PPを乾燥塗布量が1g/m2 となるようロールコート
法により塗布し、200℃で30秒間乾燥して、マレイ
ン化PP層を形成し、さらに、マレイン化PP層上にポ
リプロピレンフィルム(厚さ40μm)を熱圧着するこ
とにより積層して複合アルミニウム箔を得た。
Then, the maleated PP was applied by a roll coating method via a surface treatment layer so that the dry coating amount was 1 g / m 2, and dried at 200 ° C. for 30 seconds to form a maleated PP layer. Further, a polypropylene film (thickness: 40 μm) was laminated on the maleated PP layer by thermocompression bonding to obtain a composite aluminum foil.

【0032】得られた複合アルミニウム箔(試験材)を
15mm幅の短冊に切断して接着試験片を作製し、実施
例1と同じ電解液を使用し、接着試験片を、60℃の電
解液中に浸漬して、アルミニウム箔とポリプロピレンフ
ィルム層が剥離するまでの日数を調査した。結果を表2
に示す。
The obtained composite aluminum foil (test material) was cut into strips having a width of 15 mm to prepare an adhesive test piece. The same electrolytic solution as in Example 1 was used. The aluminum foil and the polypropylene film layer were immersed in the film and the number of days until the aluminum film and the polypropylene film layer were peeled was examined. Table 2 shows the results
Shown in

【0033】表2に示すように、本発明の条件を外れた
試験材から採取した接着試験片はいずれも、短期間で剥
離が生じた。
As shown in Table 2, all of the adhesive test pieces taken from the test materials out of the conditions of the present invention peeled off in a short period of time.

【0034】[0034]

【表2】 [Table 2]

【0035】[0035]

【発明の効果】本発明によれば、一層優れた耐電解液特
性、耐溶剤性をそなえ、電解液に接触してもアルミニウ
ム箔と熱可塑性樹脂層とが剥離することがなく、ヒート
シール性、電極端子との接着性、密着性に優れたポリマ
ー電池用複合包材およびその製造方法、ならびに該複合
包材を使用したポリマー電池が提供される。
According to the present invention, the aluminum foil and the thermoplastic resin layer do not peel off even when they come into contact with the electrolytic solution, having better electrolytic solution properties and solvent resistance, and have a good heat sealing property. A composite packaging material for a polymer battery having excellent adhesion and adhesion to an electrode terminal, a method for producing the same, and a polymer battery using the composite packaging material are provided.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明のポリマー電池用複合包材の一実施例を
示す断面図である。
FIG. 1 is a sectional view showing one embodiment of a composite packaging material for a polymer battery of the present invention.

【符号の説明】[Explanation of symbols]

1 ポリマー電池用複合包材 2 複合アルミニウム箔 3 アルミニウム箔 4 マレイン化PP層 5 熱可塑性樹脂層 6 塗布型表面処理剤による表面処理層 DESCRIPTION OF SYMBOLS 1 Composite packaging material for polymer batteries 2 Composite aluminum foil 3 Aluminum foil 4 Maleated PP layer 5 Thermoplastic resin layer 6 Surface treatment layer by coating type surface treatment agent

フロントページの続き (72)発明者 羽鳥 広道 東京都千代田区内神田1丁目9番13号 住 軽アルミ箔株式会社内 (72)発明者 坂戸 久夫 東京都千代田区内神田1丁目9番13号 住 軽アルミ箔株式会社内 Fターム(参考) 5H011 AA02 AA09 AA10 AA17 CC02 CC06 CC10 DD09 DD13 DD14 DD17 KK02 5H029 AJ15 AM03 AM05 AM07 AM16 BJ04 CJ02 CJ03 CJ22 DJ02 EJ01 EJ12 HJ01 Continued on the front page (72) Inventor Hiromichi Hatori 1-9-13 Uchikanda, Chiyoda-ku, Tokyo Residence within Light Aluminum Foil Co., Ltd. (72) Inventor Hisao Sakado 1-9-13-1 Uchikanda, Chiyoda-ku, Tokyo Residence Light aluminum foil Co., Ltd. F term (reference) 5H011 AA02 AA09 AA10 AA17 CC02 CC06 CC10 DD09 DD13 DD14 DD17 KK02 5H029 AJ15 AM03 AM05 AM07 AM16 BJ04 CJ02 CJ03 CJ22 DJ02 EJ01 EJ12 HJ01

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 アルミニウム箔、無水マレイン酸変性ポ
リプロピレン層(マレイン化PP、以下同じ)および熱
可塑性樹脂層の順で積層された複合アルミニウム箔から
なり、前記アルミニウム箔とマレイン化PPとがクロ
ム、ジルコニウム、チタン、ケイ素のうちから選ばれた
金属を含む表面処理層を介して接着され、該金属がアル
ミニウムの表面に1〜100mg/m2 の付着量で付着
していることを特徴とするポリマー電池用複合包材。
An aluminum foil, a maleic anhydride-modified polypropylene layer (maleated PP, the same applies hereinafter) and a composite aluminum foil laminated in the order of a thermoplastic resin layer, wherein the aluminum foil and the maleated PP are chromium, A polymer, which is adhered via a surface treatment layer containing a metal selected from zirconium, titanium, and silicon, and the metal adheres to the surface of aluminum at an amount of 1 to 100 mg / m 2. Composite packaging material for batteries.
【請求項2】 アルミニウム箔、マレイン化PPおよび
熱可塑性樹脂層の順で積層された複合アルミニウム箔か
らなり、前記アルミニウム箔とマレイン化PPとがクロ
ム、ジルコニウム、チタン、ケイ素のうちの2種以上の
金属を含む表面処理層を介して接着され、該金属がアル
ミニウム箔の表面に付着しており、アルミニウム箔の表
面に付着している金属のうち最も付着量の多い金属の付
着量が1〜100mg/m2 であることを特徴とするポ
リマー電池用複合包材。
2. A composite aluminum foil laminated in the order of an aluminum foil, a maleated PP and a thermoplastic resin layer, wherein the aluminum foil and the maleated PP are at least two of chromium, zirconium, titanium and silicon. The metal is adhered to the surface of the aluminum foil through the surface treatment layer containing the metal of the metal, the amount of the metal with the largest amount of adhesion of the metal adhered to the surface of the aluminum foil is 1 to 1 A composite packaging material for a polymer battery, which is 100 mg / m 2 .
【請求項3】 前記ポリマー電池用複合包材のアルミニ
ウム箔面に、熱可塑性樹脂フィルム層を設けたことを特
徴とする請求項1または2記載のポリマー電池用複合包
材。
3. The composite packaging material for a polymer battery according to claim 1, wherein a thermoplastic resin film layer is provided on an aluminum foil surface of the composite packaging material for a polymer battery.
【請求項4】 アルミニウム箔の表面を、クロム、ジル
コニウム、チタン、ケイ素のうちの1種または2種以上
の金属の金属塩を含む塗布型表面処理剤で処理し、加熱
乾燥することにより、アルミニウム箔の表面にクロム、
ジルコニウム、チタン、ケイ素のうちの1種または2種
以上が付着した表面処理層を形成して、アルミニウム箔
の表面に付着している前記金属のうち最も付着量の多い
金属の付着量を1〜100mg/m2 とし、ついで、表
面処理層を形成したアルミニウム箔の表面にマレイン化
PP、熱可塑性樹脂層の順に積層することを特徴とする
ポリマー電池用複合包材の製造方法。
4. The aluminum foil is treated by coating the surface of the aluminum foil with a coating type surface treating agent containing one or more metal salts of chromium, zirconium, titanium and silicon, and drying by heating. Chrome on the foil surface,
Forming a surface treatment layer to which one or more of zirconium, titanium, and silicon are adhered, and setting the adhesion amount of the metal having the largest adhesion amount to 1 to 2 among the metals adhering to the surface of the aluminum foil. and 100 mg / m 2, then, the production method of the polymer battery composite packaging material characterized by laminating on the surface of the aluminum foil to form a surface treatment layer maleated PP, in order of the thermoplastic resin layer.
【請求項5】 請求項1〜3のいずれかに記載のポリマ
ー電池用複合包材をヒートシールしてなることを特徴と
するポリマー電池。
5. A polymer battery obtained by heat-sealing the composite packaging material for a polymer battery according to claim 1.
JP2000266462A 2000-09-04 2000-09-04 Complex packing material for polymer battery and its manufacturing method as well as polymer battery using said complex packing material Pending JP2002075298A (en)

Priority Applications (1)

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JP2000266462A JP2002075298A (en) 2000-09-04 2000-09-04 Complex packing material for polymer battery and its manufacturing method as well as polymer battery using said complex packing material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000266462A JP2002075298A (en) 2000-09-04 2000-09-04 Complex packing material for polymer battery and its manufacturing method as well as polymer battery using said complex packing material

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2012098563A Division JP5414832B2 (en) 2012-04-24 2012-04-24 Method for producing composite packaging material for polymer battery

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Publication Number Publication Date
JP2002075298A true JP2002075298A (en) 2002-03-15

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ID=18753546

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Country Link
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005343105A (en) * 2004-06-07 2005-12-15 Sumitomo Light Metal Ind Ltd Aluminum laminate material
JP2007073402A (en) * 2005-09-08 2007-03-22 Sumitomo Light Metal Ind Ltd Aluminum laminate structure for battery housing
CN103811703A (en) * 2014-02-26 2014-05-21 江苏安博瑞新材料有限公司 Aluminum-plastic composite film for lithium battery as well as preparation method and lithium battery
CN111244335A (en) * 2020-01-20 2020-06-05 江西明冠锂膜技术有限公司 Method for reducing surface friction of aluminum-plastic film and aluminum-plastic film prepared by method
CN113381102A (en) * 2021-05-07 2021-09-10 厦门大学 Aluminum plastic film with excellent heat dissipation performance for battery packaging and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000357494A (en) * 1999-06-14 2000-12-26 Nippon Foil Mfg Co Ltd Armouring material for secondary battery and manufacture of armouring material
JP2002050325A (en) * 2000-08-01 2002-02-15 Dainippon Printing Co Ltd Laminate for battery outer package and its manufacturing method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000357494A (en) * 1999-06-14 2000-12-26 Nippon Foil Mfg Co Ltd Armouring material for secondary battery and manufacture of armouring material
JP2002050325A (en) * 2000-08-01 2002-02-15 Dainippon Printing Co Ltd Laminate for battery outer package and its manufacturing method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005343105A (en) * 2004-06-07 2005-12-15 Sumitomo Light Metal Ind Ltd Aluminum laminate material
JP4628697B2 (en) * 2004-06-07 2011-02-09 住友軽金属工業株式会社 Aluminum laminate for mounting on the outer surface of secondary battery containers
JP2007073402A (en) * 2005-09-08 2007-03-22 Sumitomo Light Metal Ind Ltd Aluminum laminate structure for battery housing
CN103811703A (en) * 2014-02-26 2014-05-21 江苏安博瑞新材料有限公司 Aluminum-plastic composite film for lithium battery as well as preparation method and lithium battery
CN111244335A (en) * 2020-01-20 2020-06-05 江西明冠锂膜技术有限公司 Method for reducing surface friction of aluminum-plastic film and aluminum-plastic film prepared by method
CN113381102A (en) * 2021-05-07 2021-09-10 厦门大学 Aluminum plastic film with excellent heat dissipation performance for battery packaging and preparation method thereof

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