JPH02112153A - Nonwoven fabric for storage battery - Google Patents
Nonwoven fabric for storage batteryInfo
- Publication number
- JPH02112153A JPH02112153A JP63265015A JP26501588A JPH02112153A JP H02112153 A JPH02112153 A JP H02112153A JP 63265015 A JP63265015 A JP 63265015A JP 26501588 A JP26501588 A JP 26501588A JP H02112153 A JPH02112153 A JP H02112153A
- Authority
- JP
- Japan
- Prior art keywords
- nonwoven fabric
- polypropylene
- core
- denier
- storage battery
- 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.)
- Granted
Links
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 36
- 238000003860 storage Methods 0.000 title claims abstract description 15
- -1 polyethylene Polymers 0.000 claims abstract description 28
- 239000004743 Polypropylene Substances 0.000 claims abstract description 14
- 229920001155 polypropylene Polymers 0.000 claims abstract description 14
- 239000008358 core component Substances 0.000 claims abstract description 11
- 239000000306 component Substances 0.000 claims abstract description 8
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 4
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 abstract description 8
- 229920000573 polyethylene Polymers 0.000 abstract description 8
- 239000002253 acid Substances 0.000 abstract description 6
- 229920000728 polyester Polymers 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 239000000835 fiber Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 239000002131 composite material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- QPFMBZIOSGYJDE-UHFFFAOYSA-N 1,1,2,2-tetrachloroethane Chemical compound ClC(Cl)C(Cl)Cl QPFMBZIOSGYJDE-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- KPZGRMZPZLOPBS-UHFFFAOYSA-N 1,3-dichloro-2,2-bis(chloromethyl)propane Chemical compound ClCC(CCl)(CCl)CCl KPZGRMZPZLOPBS-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 125000005498 phthalate group Chemical group 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- KXXXUIKPSVVSAW-UHFFFAOYSA-K pyranine Chemical compound [Na+].[Na+].[Na+].C1=C2C(O)=CC(S([O-])(=O)=O)=C(C=C3)C2=C2C3=C(S([O-])(=O)=O)C=C(S([O-])(=O)=O)C2=C1 KXXXUIKPSVVSAW-UHFFFAOYSA-K 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Nonwoven Fabrics (AREA)
- Cell Separators (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、蓄電池用不織布に関するもので、さらに詳し
くは、耐酸性と面１熱性とを兼ね備えた蓄電池用不織布
に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a nonwoven fabric for storage batteries, and more particularly to a nonwoven fabric for storage batteries that has both acid resistance and surface heat resistance.
（従来の技術）
従来から、ポリエステル、ナイロン、ポリオし・フィン
等の不織布が蓄電池用不織布として使用されており、中
でも要求される性能およびニノス１−面から、ポリエス
テルからなる不織布が広く使用されている。ところが、
蓄電池用不織布に使用されろ場合、繊維と繊維とを固着
さ−ｌることが必要Ｃ１固着させる方法としては、エマ
ルジーコン系ハ・インダーで固着させる方法、ポツトメ
ルトクイプハインダーを混繊して固着させる方法、エン
ホツラングローラー等の圧接により固着させる方法、あ
るいはニードリングにて絡ませて固着させる方υ、等が
採用されている。(Prior art) Nonwoven fabrics such as polyester, nylon, and polyester/fins have been used as nonwoven fabrics for storage batteries. Among them, nonwoven fabrics made of polyester have been widely used due to the required performance and aspects. There is. However,
When used in nonwoven fabrics for storage batteries, it is necessary to bond the fibers together.Methods for bonding C1 include fixing with an Emulgecon type binder, and mixing fibers with a pot melt quip binder. The following methods are used: fixation by pressing with an en-hotsing roller, fixation by entangling with needling, etc.
しかしながら５上述した方法により得られた不織布は、
いずれの方法から製造されたものであっても、用途が蓄
電池用として使用される場合、＋Ｉ冒こ自動車用バッテ
リーについては、希硫酸溶液にに時間浸漬状態で使用さ
れ１さらに熱がかかるので耐酸性および耐熱性が要求さ
れるものである。そのため、不織布に耐薬品性と耐熱性
とを伺＋ノー１！シめる目的で、不織布表面に樹脂被膜
加工が施され■
ているのが現状である。However, the nonwoven fabric obtained by the method described above is
No matter which method the battery is manufactured, if it is used as a storage battery, it must be resistant to acid. properties and heat resistance are required. Therefore, we asked about the chemical resistance and heat resistance of nonwoven fabric + No. 1! At present, the surface of nonwoven fabrics is treated with a resin coating for the purpose of reducing the thickness.
（発明が解決しようとする課題）
ところが、ポリエステルからなる不織布に上記樹脂被膜
加工を施したものでは、繊維表面に均一に樹脂をイ・ｊ
与することが難しく、耐酸性の向上が認められず、不織
布の繊維表面からの溶解（減量化）が起こり、これに熱
の作用が加わると、溶解作用がさらに加速されることと
なり、不織布が劣化する問題があった。また、溶解した
不織布の一部がバッテリーの底に堆積し、極板と極板と
の間で短絡が発生することもあり、バッテリーの寿命が
短くなる欠点があった。(Problem to be Solved by the Invention) However, in the case of non-woven fabrics made of polyester treated with the above-mentioned resin coating, the resin is coated uniformly on the fiber surface.
It is difficult to dissolve, and no improvement in acid resistance is observed, causing dissolution (weight loss) from the fiber surface of the nonwoven fabric, and when heat is added to this, the dissolution action is further accelerated, and the nonwoven fabric becomes There was a problem with deterioration. In addition, a portion of the dissolved nonwoven fabric may accumulate on the bottom of the battery, causing a short circuit between the electrode plates, resulting in a shortened battery life.
本発明は、このような従来のポリエステルフイラメンＩ
・不織布からなる蓄電池用不織布の欠点を解消し、耐酸
性を向」ニさせ、かつ熱の作用が加わっても劣化を起こ
さず、不織布表面を乱すことのない蓄電池用不織布を提
供しようとするものである。The present invention is directed to such conventional polyester filament I
- To provide a nonwoven fabric for storage batteries that eliminates the drawbacks of nonwoven fabrics for storage batteries made of nonwoven fabrics, improves acid resistance, and does not cause deterioration even when exposed to heat and does not disturb the surface of the nonwoven fabric. It is.
（課題を解決するための手段）
すなわち１本発明は１部分的に熱圧接されでいる連続フ
ィラメントからなる不織シートであり、該連続フィラメ
ントはポリプロピレンがポリエチレンテレツタレートの
表面を全面的に覆っている２成分芯鞘構造からなり、そ
の繊度が２〜２０デニールで、該芯成分のポリエチレン
テレフタレートの繊度が１〜１５デニールであり、該ポ
リエチレンテレフタレートと該ポリプロピレンとの重量
比か１７５〜３／１の範囲であることを１）徴とする蓄
電池用不織布を要旨とするものである。(Means for Solving the Problems) That is, one aspect of the present invention is a nonwoven sheet consisting of continuous filaments that are partially heat-pressed, and the continuous filaments are made of polypropylene that completely covers the surface of polyethylene teretulate. The fineness of the polyethylene terephthalate core component is 1 to 15 deniers, and the weight ratio of the polyethylene terephthalate to the polypropylene is 175 to 3/2. The gist of the present invention is a nonwoven fabric for storage batteries having the following characteristics: 1).
以下１本発明について詳述する。The present invention will be described in detail below.
本発明で用いられるポリプロピレン（Ｉ） Ｐ ）は通
常、工業的に利用されているボリプ１」ピレンであり、
メルトメンデ・ンクスイ直（ＭＮ直）が１・〜４０ｇ７
１０分のものが好ましい。The polypropylene (I) P ) used in the present invention is usually industrially used polypropylene,
Melt Mende Nkusui Direct (MN Direct) is 1.~40g7
10 minutes is preferred.
また１本発明で用いられるポリエチレンテレツタレート
は、市販または工業的に利用されている通常のポリエチ
レンテレツタレートのうち、特に繊維用として市販され
ているものであればよく。Further, the polyethylene terethalate used in the present invention may be any commercially available commercially available or industrially used polyethylene terethalate, particularly for use in fibers.
具体的には固有粘度は、フェノールと四塩化コークンと
の等重量混合物を溶媒として２０°Ｃで測定した値であ
り、 ０．５０〜１．２０の範囲のものが好ましい。Specifically, the intrinsic viscosity is a value measured at 20°C using an equal weight mixture of phenol and coke tetrachloride as a solvent, and is preferably in the range of 0.50 to 1.20.
本発明における繊維の２成分芯鞘構造は、芯であるポリ
エチレンう−し・フタレートの表面を鞘であるポリプロ
ピレンが全面にわたって覆っているような構造であれば
よく１断面形状でいえば、一般的な中心を共有する同：
心円状のものの他、芯成分が偏心してい不ものや、″芯
鞘とも円形以外の異形断面のものでもよい。The two-component core-sheath structure of the fiber in the present invention may be any structure in which the surface of the polyethylene film/phthalate core is completely covered by the polypropylene sheath. The same people who share a common center:
In addition to the circular core, the core component may be eccentric, or the core and sheath may have irregular cross-sections other than circular.
芯成分と鞘成分との重量比を１７５〜３／１と限定した
のは、この比が３７１を超えると、ポリプロピレンの量
が不足して芯部を全面的に覆わない場合があり、そのた
め十分な耐薬品性の効果が得られないことになるからで
ある。また、１１５未満の場合には不織布自体の強ノコ
を担っている芯成分の量が不足するため、シートとして
の強力が弱くなったり、不織布の腰がなくなるという理
由による。The reason why the weight ratio of the core component and the sheath component was limited to 175 to 3/1 is because if this ratio exceeds 371, the amount of polypropylene may be insufficient and the core may not be completely covered. This is because the effect of chemical resistance cannot be obtained. In addition, if it is less than 115, the amount of the core component that provides the strength of the nonwoven fabric itself is insufficient, so the strength of the sheet becomes weak and the nonwoven fabric loses its stiffness.
また、芯成分のポリエステル自体のデニールは直接本発
明の蓄電池用不織布の物性を支配するものであり、薬品
処理、熱処理、あるいは表面加工等の諸工程に耐えるた
めに、少なくとも２デニ一ル以上でなければならず、ま
た、１５デニ一ル以上になると、必然的に複合糸として
の全デニールも大きくなり、不織布を構成するフイうメ
ントの数が城少し、目の粗い不織布になり、バッテリー
の電極表面を覆っている不織布に空隙が生し、バッテリ
液で発生する気泡を含んで電気抵抗が大きくなり起電力
低下の原因となる。本発明の効果を発揮するためには、
前記した理由から、全デニールで２〜２０デニール、芯
成分としては１〜１５デニールでなげればならない。In addition, the denier of the core component polyester itself directly controls the physical properties of the nonwoven fabric for storage batteries of the present invention, and in order to withstand various processes such as chemical treatment, heat treatment, and surface treatment, it is necessary to have a denier of at least 2 or more. In addition, when the denier exceeds 15, the total denier of the composite yarn inevitably increases, and the number of filaments that make up the nonwoven fabric becomes coarser, which increases the battery life. Voids are created in the nonwoven fabric covering the electrode surface, which contains air bubbles generated by the battery fluid, increasing electrical resistance and causing a decrease in electromotive force. In order to exhibit the effects of the present invention,
For the reasons mentioned above, the total denier must be 2 to 20 deniers, and the core component must be 1 to 15 denier.
このような２成分芯鞘構造をもつ連続フィラメントは、
従来公知の複合紡糸装置を用いて製造することができる
。また、この連続フィラメントをウェブにするには、従
来公知の一般的な方法１例えば、空気圧を利用して繊維
を延伸しつつ、−・般的に使用されている開繊装置を利
用して開繊した後移動する網状態の上に堆積しつつ移送
するというような方法が一般的であ乞。A continuous filament with such a two-component core-sheath structure is
It can be manufactured using a conventionally known composite spinning device. In addition, in order to make this continuous filament into a web, there is a conventionally known general method. A common method is to transport the fibers while depositing them on a moving net.
（作 用）
本発明の不織布は、不織布を＋１４成する連続フィラメ
ントの表面が鞘成分であるポリプロピレンで覆われてい
るため、芯部のポリエステルが直接薬７＋１に触れず、
さらにボリプ１テ１ピレン自体がもっている耐薬品性、
１ｌｉＪ熱性の効果を十分に発揮させたものである。(Function) In the nonwoven fabric of the present invention, the surface of the continuous filaments that make up the nonwoven fabric +14 is covered with polypropylene, which is a sheath component, so that the polyester core does not come into direct contact with the drug 7+1.
Furthermore, the chemical resistance that Volip1Te1Pyrene itself has,
The thermal effect of 1liJ is fully exhibited.
一方、芯成分であるポリニスデルにより、ポリプロピ
レン１００％不１低布のもつ柔らかさに適度な硬さと腰
を与えたので、加工時の操業性が向トした。また、高温
雰囲気上状態に暴露しても１不識布の熱による収縮限は
小さく５寸法安定性にイ■れた面も兼と１備えている。On the other hand, the polynisdel core component added appropriate hardness and stiffness to the softness of the 100% polypropylene fabric, improving workability during processing. In addition, even when exposed to high-temperature atmospheric conditions, the shrinkage limit due to heat of non-woven fabric is small, and it also has excellent dimensional stability.
（実施例）
以１・、実施例により具体的に説明する。なお、実施例
中に示した蓄電池用不織布の物性値の測定法を次に承ず
。(Example) Hereinafter, the following will be explained in detail with reference to 1. Example. In addition, the method for measuring the physical property values of the nonwoven fabric for storage batteries shown in the examples will be described below.
ｆｌ＋ 耐薬品性
ｌＱｃｍ Ｘ ＩＱｃｍの試験片を４０％硫酸液の入っ
た容器乙こ浸漬し、￥Ｊ：・１後１８０°Ｃ熱水槽中で
４週間処理し、そのｂ＆’ｔ＋ｆ率を求めた。A test piece with fl+ chemical resistance lQcm .
（２） 自重〃（１生
Ｊ Ｉ Ｓ Ｌ、−１０４，２に帯してサンプリング
し、熱風循環乾燥機で１５０°Ｃ×１５分間フリー処理
し、収縮率を求めた。(2) Dead weight〃(1 raw JIS L, -104,2) was sampled and subjected to free treatment in a hot air circulation dryer at 150°C for 15 minutes, and the shrinkage rate was determined.
（３）電気抵抗
ＪＩＳ Ｃ−２３１３に１ｉｊ−シてン１１り定し
人二。(3) Electrical resistance JIS C-2313, 1ij-Site 11 defined by person 2.
（／Ｉ） ；（ミリプ１１ピレンの融点パーキンエル
マー社製１） Ｓ Ｃ−２Ｃ型の示差走査熱量計を用い
２昇温速度２０’Ｃ／分（７１１，ｌ＋定した値である
。(/I); (Melp 11 Melting point of pyrene 1 manufactured by PerkinElmer) 2 Temperature increase rate 20'C/min (711, l+ determined value) using a differential scanning calorimeter of type S C-2C.
（５） ポリエステルの固有粘度
フェノールと四塩化エタンの筒型Ｈ１＞ｒ、Ｈ合溶媒を
用い、濃度０．５ ｇ ／ １００ｍ Ｅ 、 ？Ｒｔ
度２０℃で測定した値である。(5) Intrinsic viscosity of polyester Using a cylindrical H1>r, H mixed solvent of phenol and tetrachloroethane, the concentration is 0.5 g/100 m E, ? Rt
This is a value measured at 20°C.
実施例および比較例
固有粘度が０．７２のポリエステルを芯成分としＡＳＴ
Ｍ−Ｄ−１２３８（Ｅ）法によるメルトインデックス値
が５．０ｇ／１０分、融点１６８°Ｃであるポリプロピ
レンを鞘成分とする複合糸を作り、その単糸繊度が３．
１５デニール、芯成分に対する鞘成分重量比が第１表に
示ず比率でフィラメントを紡出し、空気圧により開繊し
た後、移動する多孔質帯状体上に堆積し、不織布とした
。Examples and Comparative Examples AST using polyester with an intrinsic viscosity of 0.72 as a core component
A composite yarn having a polypropylene sheath component with a melt index value of 5.0 g/10 minutes and a melting point of 168°C by the M-D-1238(E) method was made, and the single yarn fineness was 3.
A filament having a denier of 15 denier and a weight ratio of the sheath component to the core component not shown in Table 1 was spun, opened by air pressure, and then deposited on a moving porous strip to obtain a nonwoven fabric.
この不織布の耐薬品性、耐熱性を測定し、得られた結果
を第１表に示す。The chemical resistance and heat resistance of this nonwoven fabric were measured, and the results are shown in Table 1.
第 １ 表
電池用不織布のように耐薬品性か悪くなったりｊること
がない。また、芯部のポリエステルにより耐熱性も優れ
、かつ寸法安定性に優れた性質を有する蓄電池用不織布
が提供される。Table 1 Unlike nonwoven fabrics for batteries, chemical resistance does not deteriorate. Furthermore, a nonwoven fabric for a storage battery is provided which has excellent heat resistance and dimensional stability due to the polyester core.
Claims (1)
なる不織シートであり、該連続フィラメントはポリプロ
ピレンがポリエチレンテレフタレートの表面を全面的に
覆っている２成分芯鞘構造からなり、その繊度が２〜２
０デニールで、該芯成分のポリエチレンテレフタレート
の繊度が１〜１５デニールであり、該ポリエチレンテレ
フタレートと該ポリプロピレンとの重量比が１／５〜３
／１の範囲であることを特徴とする蓄電池用不織布。(1) A nonwoven sheet consisting of continuous filaments that are partially bonded under heat and pressure, and the continuous filaments have a two-component core-sheath structure in which polypropylene completely covers the surface of polyethylene terephthalate, and the fineness of the continuous filaments is 2. ~2
0 denier, the fineness of the core component polyethylene terephthalate is 1 to 15 denier, and the weight ratio of the polyethylene terephthalate to the polypropylene is 1/5 to 3.
A nonwoven fabric for a storage battery, characterized in that the range is within the range of /1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63265015A JP2738715B2 (en) | 1988-10-19 | 1988-10-19 | Non-woven fabric for storage batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63265015A JP2738715B2 (en) | 1988-10-19 | 1988-10-19 | Non-woven fabric for storage batteries |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02112153A true JPH02112153A (en) | 1990-04-24 |
| JP2738715B2 JP2738715B2 (en) | 1998-04-08 |
Family
ID=17411396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63265015A Expired - Lifetime JP2738715B2 (en) | 1988-10-19 | 1988-10-19 | Non-woven fabric for storage batteries |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2738715B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003109568A (en) * | 2001-09-28 | 2003-04-11 | Japan Vilene Co Ltd | Separator for battery, and battery using the same |
| US20100266888A1 (en) * | 2007-10-24 | 2010-10-21 | O.R.V. Ovattificio Resinatura Valpadana S.P.A. | Spacing Element for Lead Gel Batteries or for Lead-Acid Batteries |
-
1988
- 1988-10-19 JP JP63265015A patent/JP2738715B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003109568A (en) * | 2001-09-28 | 2003-04-11 | Japan Vilene Co Ltd | Separator for battery, and battery using the same |
| US20100266888A1 (en) * | 2007-10-24 | 2010-10-21 | O.R.V. Ovattificio Resinatura Valpadana S.P.A. | Spacing Element for Lead Gel Batteries or for Lead-Acid Batteries |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2738715B2 (en) | 1998-04-08 |
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