JPH10157008A - Laminate film and cell using the laminate film - Google Patents
Laminate film and cell using the laminate filmInfo
- Publication number
- JPH10157008A JPH10157008A JP8317749A JP31774996A JPH10157008A JP H10157008 A JPH10157008 A JP H10157008A JP 8317749 A JP8317749 A JP 8317749A JP 31774996 A JP31774996 A JP 31774996A JP H10157008 A JPH10157008 A JP H10157008A
- Authority
- JP
- Japan
- Prior art keywords
- film
- laminated
- aluminum foil
- laminate film
- polyester film
- 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
Links
Classifications
-
- 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
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Packages (AREA)
- Laminated Bodies (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、成形性、耐久性に
優れたラミネートフイルムに関し、更に詳しくは、１
次、２次電池等の外容器に好適なヒートシール用ラミネ
ートフイルムに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminate film having excellent moldability and durability.
Next, the present invention relates to a laminated film for heat sealing suitable for an outer container such as a secondary battery.
【０００２】[0002]
【従来の技術】近年、ペイジャー、携帯電話、電子手
帳、形態情報端末等の携帯して移動できる情報機器が普
及し始め、ビジネス或はライフスタイルの変革期を迎え
ようとしている。2. Description of the Related Art In recent years, portable and portable information devices such as pagers, mobile phones, electronic organizers, and portable information terminals have begun to spread, and the business or lifestyle is about to change.
【０００３】これらの情報機器の携帯性を向上するた
め、より一層の小型化・軽量化が求められている。一
方、機器の駆動用の電源は、近年リチウム１次電池、リ
チウムイオン２次電池、ニッケルカドミウム２次電池、
ニッケル水素２次電池等の開発、改良により高エネルギ
ー密度化、小型化が進められている。しかし、電池の形
状についてはその生産性、品質の安定性から、円筒型、
角型、コイン型等に限定されていた。情報機器の小型化
を進める上で、電源の形状が固定されていることは回路
設計上の大きな制約となってきた。必要な容量が維持で
きた上で、電源形状に自由度が増えると回路設計上の自
由度が増し、回路以外の空間に電源をあわせて組み込む
ことが可能となる。[0003] In order to improve the portability of these information devices, further miniaturization and weight reduction are required. On the other hand, in recent years, power supplies for driving devices have been lithium primary batteries, lithium ion secondary batteries, nickel cadmium secondary batteries,
High energy density and miniaturization are being promoted by the development and improvement of nickel hydride secondary batteries and the like. However, regarding the shape of the battery, due to its productivity and quality stability,
It was limited to square type, coin type and the like. In order to reduce the size of information equipment, the fixed shape of the power supply has been a major constraint in circuit design. If the required capacity can be maintained and the degree of freedom in the shape of the power supply increases, the degree of freedom in circuit design also increases, and the power supply can be integrated into a space other than the circuit.
【０００４】電源となる各種の１次、２次電池は電解液
として弗素化合物や強アルカリを用いてるため、電解液
の漏洩防止のためのフイルムのバリヤー性と耐薬品性、
また、シール部分の強度が必要である。また、形状を自
由に変えるためには真空成形や打ち出し成形が容易に実
施できることが生産性の点から必要である。Since various types of primary and secondary batteries serving as power sources use a fluorine compound or a strong alkali as an electrolytic solution, the film has barrier properties and chemical resistance to prevent leakage of the electrolytic solution.
Further, the strength of the seal portion is required. Further, in order to freely change the shape, it is necessary from the viewpoint of productivity that vacuum forming and stamping can be easily performed.
【０００５】[0005]
【発明が解決しようとする課題】本発明はこのような問
題を解決しようとするものであり、バリヤー性、耐薬品
性、シール性、成形性にすぐれたラミネートフイルムを
提供することを課題とするものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a laminate film having excellent barrier properties, chemical resistance, sealability and moldability. Things.
【０００６】[0006]
【課題を解決するための手段】本発明者らは、上記課題
を解決すべく検討を重ねた結果、ポリエチレンフイル
ム、アルミ箔及び、ポリエステルフイルムとを、接着剤
でラミネートすることにより解決されることを見い出し
て、本発明に到達した。Means for Solving the Problems As a result of repeated studies to solve the above problems, the present inventors have found that polyethylene film, aluminum foil and polyester film can be solved by laminating with an adhesive. And arrived at the present invention.
【０００７】すなわち、本発明によれば、以下のラミネ
ートフイルムが提供される。That is, according to the present invention, the following laminated film is provided.
【０００８】（１） （ａ）未延伸ポリエチレンフイル
ム、（ｂ）アルミ箔及び（ｃ）延伸ポリエステルフイル
ムがこの順次に積層、接着されているヒートシール用フ
イルムであって、該（ｂ）と（ｃ）とが、その積層界面
において、ホットメルト接着剤でドライラミネートされ
ていることを特徴とするラミネートフイルム。(1) A heat-sealing film in which (a) an unstretched polyethylene film, (b) an aluminum foil and (c) a stretched polyester film are sequentially laminated and adhered. c) is dry-laminated with a hot melt adhesive at the lamination interface.
【０００９】（２） （ａ）未延伸ポリエチレンフイル
ム、（ｂ）アルミ箔及び（ｃ）延伸ポリエステルフイル
ムの厚みが、それぞれ３０〜１００μｍ、５〜５０μ
ｍ、８〜３０μｍであり、かつ全体の厚みが５０〜１５
０μｍである上記（１）記載のラミネートフイルム。(2) The thicknesses of (a) unstretched polyethylene film, (b) aluminum foil and (c) stretched polyester film are 30 to 100 μm and 5 to 50 μm, respectively.
m, 8 to 30 μm, and the total thickness is 50 to 15
The laminated film according to the above (1), which is 0 μm.
【００１０】更に又、本発明によれば、以下の電池が提
供される。Further, according to the present invention, the following battery is provided.
【００１１】（３） 上記（１）記載のラミネートフイ
ルムを熱成形してなる密閉容器内に、電極及び電解質が
配設されている電池。(3) A battery in which an electrode and an electrolyte are provided in a sealed container formed by thermoforming the laminate film according to (1).
【００１２】[0012]
【発明の実施の形態】本発明のラミネートフイルムは
（ａ）未延伸ポリエチレンフイルム、（ｂ）アルミ箔及
び（ｃ）延伸ポリエステルフイルムがこの順次に積層、
接着されているヒートシール用フイルムである。ここで
（ａ）未延伸ポリエチレンフイルムは、該ラミネートフ
イルムを熱成形して電池用密閉容器を形成するに際して
良好なヒートシール性を得るのに必要である。又（ｂ）
アルミ箔は電池用電解質に対するバリヤー性、耐薬品性
の為に必要である。更に、（ｃ）延伸ポリエステルフイ
ルムは、該ラミネートフイルムを任意の形状の電池用密
閉容器に熱成形するに際して、良好な成形性を得るのに
必要である。これら３成分の材料は、該ラミネートフイ
ルムを電池用密閉容器に熱成形する際の、ヒートシール
性及び熱成形性の為に、アルミ箔を中間層として、その
片面に未延伸ポリエチレンフイルム、他の片面に延伸ポ
リエステルフイルムを積層することが必要である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The laminated film of the present invention comprises (a) an unstretched polyethylene film, (b) an aluminum foil and (c) a stretched polyester film laminated in this order.
This is a bonded film for heat sealing. Here, (a) the unstretched polyethylene film is necessary for obtaining good heat sealability when the laminate film is thermoformed to form a closed container for a battery. (B)
Aluminum foil is necessary for barrier properties to battery electrolytes and chemical resistance. Further, (c) the stretched polyester film is necessary for obtaining good moldability when the laminate film is thermoformed into a closed container for a battery of any shape. These three-component materials are composed of an aluminum foil as an intermediate layer, an unstretched polyethylene film on one side, and other materials for heat sealing and thermoforming properties when the laminate film is thermoformed into a battery sealed container. It is necessary to laminate the stretched polyester film on one side.
【００１３】本発明のラミネートフイルムを構成する材
料の厚みは以下のものが好ましく選定される。（ａ）未
延伸ポリエチレンフイルムとしては低密度ポリエチレン
フイルムで、厚み３０〜１００μｍ、望ましくは５０〜
７０μｍのものを用いる。厚みが３０μｍ未満では、熱
シールを行った時に十分な密着力が出ない。１００μｍ
を越えると、成形時の可撓性が低下する。又（ｂ）アル
ミ箔の厚みは５〜５０μｍ、望ましくは１０〜３５μｍ
のものを用いる。厚みが５μｍ未満では、バリヤー性が
低下する。５０μｍを超えると成形時にピンホールが発
生しやすくなる。又（ｃ）延伸ポリエステルフイルムの
厚みは８〜３０μｍ、望ましくは１０〜２０μｍであ
る。厚みが８μｍ未満の時は成形時に切断することがあ
り、厚み３０μｍを越えると成形時の可撓性が低下す
る。The thickness of the material constituting the laminated film of the present invention is preferably selected from the following. (A) The unstretched polyethylene film is a low-density polyethylene film having a thickness of 30 to 100 μm, preferably 50 to 100 μm.
70 μm is used. If the thickness is less than 30 μm, sufficient adhesion will not be obtained when heat sealing is performed. 100 μm
If it exceeds, flexibility at the time of molding decreases. (B) The thickness of the aluminum foil is 5 to 50 μm, preferably 10 to 35 μm
Use If the thickness is less than 5 μm, the barrier properties will decrease. If it exceeds 50 μm, pinholes are likely to occur during molding. The thickness of the (c) stretched polyester film is 8 to 30 μm, preferably 10 to 20 μm. If the thickness is less than 8 μm, it may be cut during molding, and if it exceeds 30 μm, the flexibility during molding decreases.
【００１４】更に本発明のラミネートフイルムの全体の
厚みは５０〜１５０μｍであることが好ましい。５０μ
ｍ未満では、耐久性に乏しく、１５０μｍを越えると可
撓性が低下する。Further, the total thickness of the laminated film of the present invention is preferably 50 to 150 μm. 50μ
If it is less than m, the durability will be poor, and if it exceeds 150 μm, the flexibility will decrease.
【００１５】本発明のラミネートフイルムを構成する
（ｃ）延伸ポリエステルフイルムとしては、該ラミネー
トフイルムの熱成形性の点から、熱成形性の良好な、共
重合ポリエステルよりなる延伸フイルムを用いることが
好ましい。一般的には、ポリエステルフイルムはポリエ
チレンフイルム、アルミ箔に比べて成形性が劣る。この
ためラミネートフイルムの成形性についてもポリエステ
ルフイルムの成形性により左右されることになる。本発
明では、特に成形性を重視しており、成形性に優れたポ
リエステルフイルムを使用することが発明上有用であ
る。このようなポリエステル延伸フイルムとしては、例
えば特開平３―１１０１２４号公報に記載された成形加
工用ポリエステルフイルムを用いることが有用である。
即ち、以下の構成（イ、ロ、ハ及びニ）よりなる延伸ポ
リエステルフイルムが好ましく選定される。As the (c) stretched polyester film constituting the laminate film of the present invention, it is preferable to use a stretched film made of a copolyester having good thermoformability from the viewpoint of thermoformability of the laminate film. . In general, the moldability of a polyester film is inferior to that of a polyethylene film or an aluminum foil. Therefore, the moldability of the laminate film also depends on the moldability of the polyester film. In the present invention, the moldability is particularly emphasized, and it is useful in the invention to use a polyester film having excellent moldability. As such a stretched polyester film, it is useful to use, for example, a polyester film for molding described in JP-A-3-110124.
That is, a stretched polyester film having the following configuration (a, b, c, and d) is preferably selected.
【００１６】（イ）共重合割合が６〜２０％の共重合ポ
リエステルであること、 （ロ）平均粒径が２．５μｍ以下であり、かつ粒径比
（長径／短径）が１．０〜１．２である球状単分散の滑
剤を含有すること （ハ）面配向係数が０．１０〜０．１６であること （ニ）１５０℃の乾熱収縮率が１０％以下であること 本発明のラミネートフイルムは、上記３成分の材料が、
積層されかつ各積層界面が接着されているが、特に
（ｂ）アルミ箔と（ｃ）延伸ポリエステルフイルムとの
積層界面がホットメルト接着剤でドライラミネートされ
ていることが必要である。（ａ）未延伸ポリエチレンフ
イルムと（ｂ）アルミ箔との接着は、未延伸ポリエチレ
ンフイルムによるヒートシール後においても、アルミ箔
による電池内の電解質に対するバリヤー性、耐薬品性を
高める上で重要である。しかしながら未延伸ポリエチレ
ンフイルムとして、低密度ポリエチレンよりなり厚さ３
０〜１００μｍのものを使用することにより、充分な接
着性が得られるので、アルミ箔上に、接着剤を介して、
ポリエチレンを押出しラミネートしてもよい。勿論ホッ
トメルト接着剤で未延伸ポリエチレンフイルムとアルミ
箔とをドライラミネートしてもよい。一方アルミ箔と延
伸ポリエステルフイルムとの接着は、ポリエステルフイ
ルムが延伸されているが故に、接着性に劣りその積層界
面の接着性を強固にするために、ホットメルト接着剤を
塗布後、ドライラミネートすることが必要である。(A) a copolymerized polyester having a copolymerization ratio of 6 to 20%; (b) an average particle diameter of 2.5 μm or less and a particle diameter ratio (major axis / minor axis) of 1.0. (C) the plane orientation coefficient is 0.10 to 0.16; and (d) the dry heat shrinkage at 150 ° C. is 10% or less. In the laminate film of the invention, the above three-component material is:
The layers are laminated and the respective laminating interfaces are adhered. In particular, it is necessary that the laminating interface between (b) the aluminum foil and (c) the stretched polyester film is dry-laminated with a hot melt adhesive. The adhesion between (a) the unstretched polyethylene film and (b) the aluminum foil is important even after heat sealing with the unstretched polyethylene film, in order to enhance the barrier properties and chemical resistance to the electrolyte in the battery by the aluminum foil. . However, the unstretched polyethylene film is made of low-density polyethylene and has a thickness of 3
By using a material having a thickness of 0 to 100 μm, sufficient adhesiveness can be obtained.
Polyethylene may be extrusion laminated. Of course, the unstretched polyethylene film and the aluminum foil may be dry-laminated with a hot melt adhesive. On the other hand, the adhesion between the aluminum foil and the stretched polyester film is inferior in adhesiveness because the polyester film is stretched. It is necessary.
【００１７】本発明のラミネートフイルムの各積層界面
を接着する接着剤としては以下のものが好ましく選定さ
れる。アルミ箔と延伸ポリエステルフイルムとの接着に
関して、熱可塑性樹脂系接着剤であるポリ酢酸ビニル
（ＰＶＡＣ）、ポリビニルアルコール（ＰＶＡ）、ポリ
アクリレート（アクリル）、ポリ塩化ビニル（ＰＶ
Ｃ）、ポリスチレン、石油樹脂、ポリアミド（ナイロ
ン）、熱硬化性樹脂系接着剤であるフェノール樹脂、エ
ポキシ樹脂、ポリウレタン樹脂、キシレン樹脂、アルキ
ッド樹脂、ポリエステル樹脂系、ゴム系接着剤である天
然ゴム、再生ゴム、ポリクロロプレン（ＣＲ）、ニトリ
ルゴム（ＮＢＲ）、スチレン―ブタジエンゴム（ＳＢ
Ｒ）、ブチルゴム、ポリイソブチレン、エチレン―プロ
ピレンゴム（ＥＰＲ）、その他天然系接着剤であるデン
プン、アラビアゴム、セラチン、ロジン（松脂）等の接
着剤を用いることができる。The following adhesives are preferably selected as the adhesive for bonding the respective laminating interfaces of the laminated film of the present invention. Regarding the adhesion between the aluminum foil and the stretched polyester film, thermoplastic resin-based adhesives such as polyvinyl acetate (PVAC), polyvinyl alcohol (PVA), polyacrylate (acryl), and polyvinyl chloride (PVC)
C), polystyrene, petroleum resin, polyamide (nylon), thermosetting resin-based adhesive phenolic resin, epoxy resin, polyurethane resin, xylene resin, alkyd resin, polyester resin-based, rubber-based natural rubber, Reclaimed rubber, polychloroprene (CR), nitrile rubber (NBR), styrene-butadiene rubber (SB
R), butyl rubber, polyisobutylene, ethylene-propylene rubber (EPR), and other natural adhesives such as starch, gum arabic, seratin, and rosin (pine resin) can be used.
【００１８】アルミ箔とポリエチレンフイルムとの接着
に関しては、１次、２次電池の電解質である強アルカリ
または弗素化合物によりこの界面が剥離しやすくなるの
で接着性、耐薬品性が良好である熱硬化性樹脂系接着
剤、すなわち、フェノール樹脂、エポキシ樹脂、ポリウ
レタン樹脂、キシレン樹脂、アルキッド樹脂、ポリエス
テル樹脂系等の接着剤を用いることが更に好ましい。Regarding the adhesion between the aluminum foil and the polyethylene film, the interface is easily peeled off by the strong alkali or fluorine compound which is the electrolyte of the primary and secondary batteries, so that the thermosetting which has good adhesion and chemical resistance is provided. It is more preferable to use a conductive resin adhesive, that is, an adhesive such as a phenol resin, an epoxy resin, a polyurethane resin, a xylene resin, an alkyd resin, and a polyester resin.
【００１９】アルミ箔とポリエステルフイルムとの層
間、アルミ箔とポリエチレンフイルムとの層間の接着剤
は上記の種類であれば同じでも良いし、また、異なって
いても良い。The adhesive between the aluminum foil and the polyester film and between the aluminum foil and the polyethylene film may be the same or different as long as it is of the above-mentioned type.
【００２０】本発明のラミネートフイルムを用いて１
次、２次電池を作成するには、該ラミネートフイルムの
未延伸ポリエチレンフイルム面を、内面に、延伸ポリエ
ステルフイルムが外面になるように、熱成形して任意の
形状の密閉容器を形成する。その際該密閉容器内に所望
の電極と、電解質を配設することにより容易に電池を作
成することができる。Using the laminated film of the present invention,
Next, in order to prepare a secondary battery, a hermetically sealed container having an arbitrary shape is formed by thermoforming the unstretched polyethylene film surface of the laminated film on the inner surface and the stretched polyester film on the outer surface. At that time, a battery can be easily prepared by disposing a desired electrode and an electrolyte in the closed container.
【００２１】[0021]
【発明の効果】本発明のラミネートフイルムは、ヒート
シール性に優れた未延伸ポリエチレンフイルム（ａ）、
バリヤー性に優れたアルミ箔（ｂ）及び成形性に優れた
延伸ポリエステルフイルム（ｃ）から構成されており、
且つ、各積層界面が強固に接着処理されているので、該
ラミネートフイルムを熱成形して１次・２次電池等の外
容器として有用であり、且つ外容器を成形するときの成
形性及び外容器の耐久性が極めて優れているので、産業
上極めてその意義が大きい。The laminate film of the present invention comprises an unstretched polyethylene film (a) having excellent heat sealability,
It is composed of aluminum foil (b) with excellent barrier properties and stretched polyester film (c) with excellent moldability.
In addition, since each lamination interface is firmly bonded, the laminated film is useful as an outer container for a primary / secondary battery by thermoforming, and the moldability and the outer shape when forming the outer container. Since the durability of the container is extremely excellent, its significance is extremely large in industry.
【００２２】[0022]
【実施例】以下、実施例を挙げ本発明をさらに具体的に
説明するが、以下の実施例に限定されるものではない。EXAMPLES Hereinafter, the present invention will be described more specifically with reference to Examples, but it should not be construed that the invention is limited thereto.
【００２３】［実施例１］厚さ１５μｍの共重合ポリエ
ステルよりなる延伸ポリエステルフイルム（帝人株式会
社製、商標「テトロンフイルム」成型タイプ）厚さ２５
μｍのアルミ箔および厚さ６０μｍの低密度ポリエチレ
ンよりなる未延伸ポリエチレンフイルム（日本コニカ株
式会社製の低密度ポリエチレン、商標「ＮＵＣ―８００
７」を使用）を飽和ポリエステル系の接着剤（日立化成
ポリマー株式会社製：商標「ハイボン７６６２」）を用
いてドライラミネートし合計の厚さが１００μｍである
ラミネートフイルムを得た。[Example 1] A stretched polyester film made of a copolymerized polyester having a thickness of 15 μm (trade name “Tetron film” manufactured by Teijin Limited), thickness 25
Unstretched polyethylene film (low-density polyethylene manufactured by Nippon Konica Co., Ltd., trade name "NUC-800
7) was dry-laminated using a saturated polyester-based adhesive (trade name: “Hybon 7662”, manufactured by Hitachi Chemical Co., Ltd.) to obtain a laminated film having a total thickness of 100 μm.
【００２４】このラミネートフイルムの小片を６０％Ｈ
Ｆ水溶液中に浸して様子の変化を追跡した。室温で１週
間追跡したが、外観状の変化は認められなかった。A small piece of this laminated film is
It was immersed in an F aqueous solution and the change in appearance was tracked. After tracking at room temperature for one week, no change in appearance was observed.
【００２５】［実施例２］実施例１において、アルミ箔
上に、実施例１に使用した低密度ポリエチレンをフイル
ム状に押出しコーティング（この際両面の接着剤として
日立化成ポリマー株式会社製、商標「ハイポンＡＣ―６
３」を使用）する以外は実施例１と同様に行いラミネー
トフイルムを得た。Example 2 In Example 1, the low-density polyethylene used in Example 1 was extruded and coated on an aluminum foil in the form of a film. Hypon AC-6
3) was performed in the same manner as in Example 1 except that a laminated film was obtained.
【００２６】このラミネートフイルムの小片を６０％Ｈ
Ｆ水溶液中に浸して様子の変化を追跡した。室温で１週
間追跡したが、外観状の変化は認められなかった。A small piece of this laminated film is
It was immersed in an F aqueous solution and the change in appearance was tracked. After tracking at room temperature for one week, no change in appearance was observed.
【００２７】［比較例１］厚さ２５μｍのアルミ箔の両
側に、厚さ１５μｍに調節したナイロンフイルム（帝人
株式会社製ナイロン６ポリマー使用）および厚さ６０μ
ｍに調節したポリエチレンフイルム（実施例１に使用し
た低密度ポリエチレンを使用）を押出しコーティングし
て合計１００μｍのラミネートフイルムを得た。この
際、アンカーコーティング剤としてポリエチレンイミン
系の「トヨバイン２１０Ｓ」（東洋曹達工業株式会社
製）を用いた。Comparative Example 1 A nylon film (using a nylon 6 polymer manufactured by Teijin Limited) having a thickness of 15 μm and a thickness of 60 μm were formed on both sides of an aluminum foil having a thickness of 25 μm.
The polyethylene film adjusted to m (using the low-density polyethylene used in Example 1) was extrusion coated to obtain a laminated film having a total of 100 μm. At this time, polyethyleneimine-based "Toyobain 210S" (manufactured by Toyo Soda Kogyo Co., Ltd.) was used as an anchor coating agent.
【００２８】このラミネートフイルムの小片を実施例１
と同様にＨＦ６０％水溶液に浸し、変化を追跡した。室
温で１週間放置後ポリエチレンフイルムとアルミ箔の界
面側に剥離が認められた。A small piece of this laminated film was used in Example 1.
As in the above, the sample was immersed in a HF 60% aqueous solution, and the change was tracked. After standing at room temperature for one week, peeling was observed on the interface side between the polyethylene film and the aluminum foil.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｈ０１Ｍ 2/02 Ｈ０１Ｍ 2/02 Ｋ // Ｂ２９Ｋ 23:00 Ｂ２９Ｌ 9:00 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI H01M 2/02 H01M 2/02 K // B29K 23:00 B29L 9:00
Claims (3)
（ｂ）アルミ箔及び（ｃ）延伸ポリエステルフイルムが
この順次に積層、接着されているヒートシール用フイル
ムであって、該（ｂ）と（ｃ）とが、その積層界面にお
いて、ホットメルト接着剤でドライラミネートされてい
ることを特徴とするラミネートフイルム。(1) an unstretched polyethylene film,
(B) An aluminum foil and (c) a stretched polyester film are laminated and adhered in this order, and the film for heat sealing, wherein (b) and (c) form a hot melt adhesive at the lamination interface. A laminated film characterized by being dry-laminated with.
（ｂ）アルミ箔及び（ｃ）延伸ポリエステルフイルムの
厚みが、それぞれ３０〜１００μｍ、５〜５０μｍ、８
〜３０μｍであり、かつ全体の厚みが５０〜１５０μｍ
である請求項１記載のラミネートフイルム。(A) an unstretched polyethylene film,
(B) The thickness of the aluminum foil and the thickness of the (c) stretched polyester film are 30 to 100 μm, 5 to 50 μm, and 8 respectively.
３０30 μm, and the entire thickness is 50-150 μm
The laminated film according to claim 1, wherein
成形してなる密閉容器内に、電極及び電解質が配設され
ている電池。3. A battery in which an electrode and an electrolyte are provided in a sealed container obtained by thermoforming the laminated film according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8317749A JPH10157008A (en) | 1996-11-28 | 1996-11-28 | Laminate film and cell using the laminate film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8317749A JPH10157008A (en) | 1996-11-28 | 1996-11-28 | Laminate film and cell using the laminate film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10157008A true JPH10157008A (en) | 1998-06-16 |
Family
ID=18091615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8317749A Pending JPH10157008A (en) | 1996-11-28 | 1996-11-28 | Laminate film and cell using the laminate film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10157008A (en) |
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