JPH04326504A - Electric double layer capacitor - Google Patents
Electric double layer capacitorInfo
- Publication number
- JPH04326504A JPH04326504A JP12270291A JP12270291A JPH04326504A JP H04326504 A JPH04326504 A JP H04326504A JP 12270291 A JP12270291 A JP 12270291A JP 12270291 A JP12270291 A JP 12270291A JP H04326504 A JPH04326504 A JP H04326504A
- Authority
- JP
- Japan
- Prior art keywords
- separator
- electrolyte
- melt
- double layer
- electric double
- 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
- 239000003990 capacitor Substances 0.000 title claims abstract description 14
- 239000004744 fabric Substances 0.000 claims abstract description 20
- 239000003792 electrolyte Substances 0.000 claims abstract description 13
- 229910052809 inorganic oxide Inorganic materials 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 11
- 239000004750 melt-blown nonwoven Substances 0.000 claims description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 14
- -1 polytetrafluoroethylene Polymers 0.000 description 18
- 230000014759 maintenance of location Effects 0.000 description 11
- 239000004743 Polypropylene Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 229920001155 polypropylene Polymers 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000008151 electrolyte solution Substances 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910004369 ThO2 Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- ZCUFMDLYAMJYST-UHFFFAOYSA-N thorium dioxide Chemical compound O=[Th]=O ZCUFMDLYAMJYST-UHFFFAOYSA-N 0.000 description 1
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
- Y02E60/13—Energy storage using capacitors
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は電気二重層コンデンサに
関し、さらに詳しく言えば、そのセパレータに関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to electric double layer capacitors, and more particularly to separators thereof.
【０００２】0002
【従来の技術】図１に示されているように、電気二重層
コンデンサ１は皿状のケース本体２と、同ケース本体２
にシール手段としてのガスケット３を介して被せられる
キャップ４とを備えている。2. Description of the Related Art As shown in FIG. 1, an electric double layer capacitor 1 includes a dish-shaped case body 2,
It is provided with a cap 4 which is covered with a gasket 3 as a sealing means.
【０００３】製造に際しては、ケース本体２にガスケッ
ト３を嵌合させた後、同ケース本体２の底部に導電性接
着剤を介してシート状の分極性電極５が取付けられる。
これと並行して、キャップ４の底部にも同じくシート状
の分極性電極６が導電性接着剤を介して取付けられる。During manufacturing, after a gasket 3 is fitted to the case body 2, a sheet-like polarizable electrode 5 is attached to the bottom of the case body 2 via a conductive adhesive. In parallel with this, a sheet-like polarizable electrode 6 is also attached to the bottom of the cap 4 via a conductive adhesive.
【０００４】そして、ケース本体２とキャツプ４に電解
液が注入され、各分極性電極５，６に対する電解液の含
浸が行なわれるとともに、それらの間にセパレータ７が
配置される。[0004] Then, an electrolytic solution is injected into the case body 2 and the cap 4, and each polarizable electrode 5, 6 is impregnated with the electrolytic solution, and a separator 7 is placed between them.
【０００５】しかる後、ケース本体２に対してキャップ
４が被せられ、同ケース本体２の周縁がかしめられて所
定容量のコインセルが作られる。[0005] Thereafter, the cap 4 is placed on the case body 2, and the periphery of the case body 2 is caulked to create a coin cell of a predetermined capacity.
【０００６】分極性電極５，６は、例えば導電性物質と
して活性炭、カーボンの粉末にバインダーとしてのＰＴ
ＦＥ（ポリテトラフルオロエチレン）を混練し、所定の
厚みに圧延してなるシートから例えば円形に打ち抜くこ
とにより得られる。The polarizable electrodes 5 and 6 are made of, for example, activated carbon as a conductive material, carbon powder and PT as a binder.
It can be obtained by kneading FE (polytetrafluoroethylene) and rolling it to a predetermined thickness and punching it into a circular shape, for example.
【０００７】[0007]
【発明が解決しようとする課題】分極性電極５，６への
電解液の含浸時、セパレータ７にも同電解液の含浸が行
なわれるようにするため、セパレータ７には電解液に対
する濡れ性と保液力が要求される。[Problems to be Solved by the Invention] In order to ensure that the separator 7 is also impregnated with the electrolyte when the polarizable electrodes 5 and 6 are impregnated with the electrolyte, the separator 7 is provided with a material that has a wettability to the electrolyte. Liquid retention power is required.
【０００８】この意味からすれば、ポリプロピレンやポ
リエチレンなどの不織布が好ましいが、そのままでは機
械的強度が弱い。そこで、ガラス繊維を混入している。
ガラス繊維はその線径を細くすることができるため、機
械的強度が高められることに加えて全体としての表面積
が拡大され、その分保液力が高められる。[0008] From this point of view, nonwoven fabrics such as polypropylene and polyethylene are preferable, but they have low mechanical strength as they are. Therefore, glass fiber is mixed in. Since the wire diameter of glass fibers can be made thinner, the mechanical strength is increased and the overall surface area is expanded, thereby increasing the liquid retention capacity.
【０００９】しかしながら、製造上次のような問題があ
る。すなわち、ガラス繊維を混入した後、ローラがけを
行なうのであるが、その際抜け落ちることがあり、ピン
ホール発生の原因となる。また、マザーシートからセパ
レータ７を型で打ち抜くのであるが、ガラス繊維が混入
されているため、その打ち抜き型の消耗が激しい。However, there are the following problems in manufacturing. That is, after glass fibers are mixed in, rollers are applied, but at that time they may fall out, causing pinholes. Further, the separator 7 is punched out from the mother sheet using a die, but since glass fiber is mixed in, the punching die is subject to considerable wear and tear.
【００１０】これに代わる素材としてメルトブローン不
織布がある。メルトブローンとは、ポリマーを溶解（メ
ルト）し、吹き飛ばす（ブロー）の意味である。[0010]An alternative material is meltblown nonwoven fabric. Melt-blowing refers to melting and blowing a polymer.
【００１１】すなわち、このメルトブローン不織布は、
溶解した熱可塑性ポリマー、例えばポリプロピレン、ポ
リエチレン、ポリエチレンテレフタレートなどを押出機
のノズルダイから捕集機に高速加熱ガスで吹き出すこと
により得られる。[0011] That is, this melt-blown nonwoven fabric is
It is obtained by blowing a melted thermoplastic polymer, such as polypropylene, polyethylene, polyethylene terephthalate, etc., from a nozzle die of an extruder to a collector with high-speed heated gas.
【００１２】メルトブローン不織布は成形性および機械
的強度の点では好ましいと言えるが、その線径が太いた
め表面積が小さく、電解液に対する濡れ性および保液力
が余り良くない。[0012] Melt-blown nonwoven fabrics are preferable in terms of moldability and mechanical strength, but because of their large wire diameters, their surface area is small, and their wettability and liquid retention ability with respect to electrolytic solutions are not very good.
【００１３】このメルトブローン不織布をセパレータと
して使用する場合、一枚で使用されたり、あるいは複数
枚、例えば二枚重ねて使用する場合があるが、いずれに
しても電解液不足となり、コンデンサの短命化を招来す
るおそれがある。[0013] When this melt-blown nonwoven fabric is used as a separator, it may be used as a single piece or in multiple pieces, for example, two pieces stacked, but in either case, the electrolyte becomes insufficient and the life of the capacitor is shortened. There is a risk.
【００１４】[0014]
【課題を解決するための手段】本発明は上記従来の欠点
を解消するためになされたもので、その構成上の特徴は
、分極性電極に所定の電解液を含浸させるとともに、そ
れら分極性電極の間にセパレータを介在してなる電気二
重層コンデンサにおいて、セパレータとしてメルトブロ
ーン不織布に無機酸化物の粉末を塗布したものを用いた
ことにある。[Means for Solving the Problems] The present invention has been made to eliminate the above-mentioned conventional drawbacks, and its structural features include impregnating polarizable electrodes with a predetermined electrolyte and In an electric double layer capacitor having a separator interposed therebetween, a melt-blown nonwoven fabric coated with inorganic oxide powder is used as the separator.
【００１５】上記無機酸化物として、シリカ（ＳｉＯ２
）、アルミナ（Ａｌ２Ｏ３）、ＺｒＯ２、ＴｈＯ２、Ｔ
ｉＯ２、ＭｇＯ、Ｆｅ２Ｏ３、ＣａＯ、ＮａＯ、Ｓｂ２
Ｏ５、タルク、マイカ、硅砂やカオリンなどを例示する
ことができ、これらはその単体で使用してもよく、また
混合物として使用してもよい。[0015] As the inorganic oxide, silica (SiO2
), alumina (Al2O3), ZrO2, ThO2, T
iO2, MgO, Fe2O3, CaO, NaO, Sb2
Examples include O5, talc, mica, silica sand, and kaolin, which may be used alone or as a mixture.
【００１６】[0016]
【作用】無機酸化物の粉末を塗布したことにより表面積
が拡大され、電解液に対する濡れ性および保液力が大幅
に改善される。[Action] By applying the inorganic oxide powder, the surface area is expanded, and the wettability and liquid retention ability for the electrolyte are greatly improved.
【００１７】[0017]
【実施例】本発明の実施例を比較例とともに説明する。[Example] Examples of the present invention will be explained together with comparative examples.
【００１８】《実施例１》ポリプロピレンからなるメル
トブローン不織布（厚さ１５０μｍ、目付量４５ｇ／平
方ｍ）にシリカの粉末を塗布した。Example 1 Silica powder was applied to a melt-blown nonwoven fabric made of polypropylene (thickness: 150 μm, basis weight: 45 g/m 2 ).
【００１９】《実施例２》ポリプロピレンからなるメル
トブローン不織布（厚さ１５０μｍ、目付量４６ｇ／平
方ｍ）にアルミナの粉末を塗布した。Example 2 Alumina powder was applied to a melt-blown nonwoven fabric made of polypropylene (thickness: 150 μm, basis weight: 46 g/m 2 ).
【００２０】《実施例３》ポリエチレンからなるメルト
ブローン不織布（厚さ２００μｍ、目付量４０ｇ／平方
ｍ）にシリカの粉末を塗布した。Example 3 Silica powder was applied to a melt-blown nonwoven fabric made of polyethylene (thickness 200 μm, basis weight 40 g/m 2 ).
【００２１】《実施例４》ポリエチレンからなるメルト
ブローン不織布（厚さ１２０μｍ、目付量３５ｇ／平方
ｍ）にシリカ、アルミナの混合の粉末を塗布した。Example 4 A mixed powder of silica and alumina was applied to a melt-blown nonwoven fabric made of polyethylene (thickness 120 μm, basis weight 35 g/m 2 ).
【００２２】《実施例５》ポリエチレンテレフタレート
からなるメルトブローン不織布（厚さ１８０μｍ、目付
量５５ｇ／平方ｍ）にシリカの粉末を塗布した。<<Example 5>> Silica powder was applied to a melt-blown nonwoven fabric (thickness 180 μm, basis weight 55 g/m2) made of polyethylene terephthalate.
【００２３】《実施例６》ポリプロピレンからなる第１
のメルトブローン不織布（厚さ１００μｍ、目付量５０
ｇ／平方ｍ）と、同第１のメルトブローン不織布と同一
の第２のメルトブローン不織布とを積層し、これにシリ
カの粉末を塗布した。<<Example 6>> First layer made of polypropylene
melt-blown nonwoven fabric (thickness 100 μm, basis weight 50
g/m2), the same first melt-blown nonwoven fabric, and the same second melt-blown nonwoven fabric were laminated, and silica powder was applied thereto.
【００２４】〈比較例１〉ポリプロピレンからなるメル
トブローン不織布（厚さ１２０μｍ、目付量４０ｇ／平
方ｍ）で無機酸化物の塗布なし。Comparative Example 1 Melt-blown nonwoven fabric made of polypropylene (thickness 120 μm, basis weight 40 g/m2) without coating of inorganic oxide.
【００２５】〈比較例２〉ポリエチレンからなるメルト
ブローン不織布（厚さ１５０μｍ、目付量３２ｇ／平方
ｍ）で無機酸化物の塗布なし。Comparative Example 2 Melt-blown nonwoven fabric made of polyethylene (thickness 150 μm, basis weight 32 g/m2) without coating of inorganic oxide.
【００２６】〈比較例３〉ポリエチレンテレフタレート
からなるメルトブローン不織布（厚さ１８０μｍ、目付
量５０ｇ／平方ｍ）で無機酸化物の塗布なし。Comparative Example 3 Melt-blown nonwoven fabric made of polyethylene terephthalate (thickness 180 μm, basis weight 50 g/m2) without coating of inorganic oxide.
【００２７】〈比較例４〉ポリプロピレンからなる通常
の不織布（厚さ１５０μｍ、目付量５０ｇ／平方ｍ）で
無機酸化物の塗布なし。Comparative Example 4 A normal nonwoven fabric made of polypropylene (thickness 150 μm, basis weight 50 g/m2) without coating of inorganic oxide.
【００２８】〈比較例５〉ポリエチレンからなる通常の
不織布（厚さ１８０μｍ、目付量６０ｇ／平方ｍ）で無
機酸化物の塗布なし。Comparative Example 5 A normal non-woven fabric made of polyethylene (thickness 180 μm, basis weight 60 g/m2) without coating of inorganic oxide.
【００２９】上記実施例１〜５および比較例１〜５につ
いてその保液率を測定した結果を表１に示す。Table 1 shows the results of measuring the liquid retention rates of Examples 1 to 5 and Comparative Examples 1 to 5.
【００３０】[0030]
【表１】 この測定方法は次のとおりである。[Table 1] The measurement method is as follows.
【００３１】（１）まず、大きさ５０×５０ｍｍの試験
片をとり、これをプロピレンカーボネイト中に浸漬し、
十分に含浸させる。(1) First, a test piece with a size of 50 x 50 mm was taken and immersed in propylene carbonate.
Soak thoroughly.
【００３２】（２）試験片の端をピンセットではさんで
取り出し、４５度に傾けたガラス板に３分間放置した後
、液滴を取り除き重量を測定し、次式によって保液率を
算出する。(2) Take out the end of the test piece with tweezers, leave it on a glass plate tilted at 45 degrees for 3 minutes, remove the droplets, measure the weight, and calculate the liquid retention rate using the following formula.
【００３３】
保液率（％）＝（Ｗ２−Ｗ１）／Ｗ１×１００式中、Ｗ
１は浸漬前の重量、Ｗ２は浸漬後の重量である。Liquid retention rate (%)=(W2-W1)/W1×100 In the formula, W
1 is the weight before immersion, and W2 is the weight after immersion.
【００３４】（３）しかる後、試験片を２枚のろ紙には
さみ、おもりを載せる。おもりとしては、５×２５ｃｍ
の治具（６５０ｇ）を用いた。(3) After that, the test piece is sandwiched between two pieces of filter paper, and a weight is placed on it. As a weight, 5 x 25 cm
A jig (650 g) was used.
【００３５】（４）１分後に試験片を取り出し、重量を
測定し、上記の式によって保液率を求める。(4) After 1 minute, take out the test piece, measure its weight, and determine the liquid retention rate using the above formula.
【００３６】（５）（３）、（４）を２回繰り返す。(5) Repeat (3) and (4) twice.
【００３７】（６）（２）で求めた保液率を３分値とし
た。(6) The liquid retention rate determined in (2) was taken as a 3-minute value.
【００３８】（７）（３）、（４）および（５）で求め
た保液率をそれぞれ４，５，６分値とした。(7) The liquid retention rates obtained in (3), (4), and (5) were taken as 4, 5, and 6 minute values, respectively.
【００３９】この測定結果から分かるように、本発明に
よると、いずれの実施例においても高い保液率を示し、
コンデンサの長寿命化が図れる。[0039] As can be seen from the measurement results, according to the present invention, a high liquid retention rate was exhibited in all the examples.
Capacitor life can be extended.
【００４０】[0040]
【発明の効果】以上説明したように、本発明によれば、
セパレータとしてメルトブローン不織布に無機酸化物の
粉末を塗布したものを用いたことにより、電解液に対す
る濡れ性および保液力が改善され、コンデンサの長寿命
化が達成される。[Effects of the Invention] As explained above, according to the present invention,
By using a melt-blown nonwoven fabric coated with inorganic oxide powder as a separator, the wettability and liquid holding power for the electrolytic solution are improved, and the life of the capacitor can be extended.
【図１】電気二重層コンデンサの内部構造を図解した断
面図。FIG. 1 is a sectional view illustrating the internal structure of an electric double layer capacitor.
１ 電気二重層コンデンサ ２ ケース本体 ３ ガスケット（シール手段） ４ キャップ ５，６ 分極性電極 ７ セパレータ 1 Electric double layer capacitor 2 Case body 3 Gasket (sealing means) 4 Cap 5, 6 Polarizable electrode 7 Separator
Claims (2)
ともに、それら分極性電極の間にセパレータを介在して
なる電気二重層コンデンサにおいて、上記セパレータと
してメルトブローン不織布に無機酸化物の粉末を塗布し
たものを用いたことを特徴とする電気二重層コンデンサ
。1. An electric double layer capacitor in which polarizable electrodes are impregnated with a predetermined electrolyte and a separator is interposed between the polarizable electrodes, in which inorganic oxide powder is applied to a melt-blown nonwoven fabric as the separator. An electric double layer capacitor characterized by using an electric double layer capacitor.
Ｏ２）および／またはアルミナ（Ａｌ２Ｏ３）である請
求項１に記載の電気二重層コンデンサ。2. The main component of the inorganic oxide is silica (Si
2) and/or alumina (Al2O3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12270291A JPH04326504A (en) | 1991-04-25 | 1991-04-25 | Electric double layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12270291A JPH04326504A (en) | 1991-04-25 | 1991-04-25 | Electric double layer capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04326504A true JPH04326504A (en) | 1992-11-16 |
Family
ID=14842503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12270291A Pending JPH04326504A (en) | 1991-04-25 | 1991-04-25 | Electric double layer capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04326504A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5104891A (en) * | 1989-12-11 | 1992-04-14 | G. D. Searle & Co. | Cycloheptimidazolone compounds as angiotensin ii antagonists for control of hypertension |
| JPH07240348A (en) * | 1994-02-28 | 1995-09-12 | Nec Corp | Electrical double layer capacitor |
| JP2008041809A (en) * | 2006-08-03 | 2008-02-21 | Tomoegawa Paper Co Ltd | Separator for electrochemical element, and manufacturing apparatus and method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5338767A (en) * | 1976-09-22 | 1978-04-10 | Japan Vilene Co Ltd | High strength unwoven fabric composed of fine fibers and its manufacture |
| JPS6319772A (en) * | 1986-07-14 | 1988-01-27 | Matsushita Electric Ind Co Ltd | Lead-acid battery |
| JPS63310555A (en) * | 1987-06-12 | 1988-12-19 | Asahi Chem Ind Co Ltd | Separator for battery |
-
1991
- 1991-04-25 JP JP12270291A patent/JPH04326504A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5338767A (en) * | 1976-09-22 | 1978-04-10 | Japan Vilene Co Ltd | High strength unwoven fabric composed of fine fibers and its manufacture |
| JPS6319772A (en) * | 1986-07-14 | 1988-01-27 | Matsushita Electric Ind Co Ltd | Lead-acid battery |
| JPS63310555A (en) * | 1987-06-12 | 1988-12-19 | Asahi Chem Ind Co Ltd | Separator for battery |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5104891A (en) * | 1989-12-11 | 1992-04-14 | G. D. Searle & Co. | Cycloheptimidazolone compounds as angiotensin ii antagonists for control of hypertension |
| JPH07240348A (en) * | 1994-02-28 | 1995-09-12 | Nec Corp | Electrical double layer capacitor |
| JP2008041809A (en) * | 2006-08-03 | 2008-02-21 | Tomoegawa Paper Co Ltd | Separator for electrochemical element, and manufacturing apparatus and method thereof |
| JP4740062B2 (en) * | 2006-08-03 | 2011-08-03 | 株式会社巴川製紙所 | Electrochemical element separator, manufacturing apparatus and manufacturing method thereof |
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| A02 | Decision of refusal |
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