JPS63158743A - Separator for alkaline battery - Google Patents
Separator for alkaline batteryInfo
- Publication number
- JPS63158743A JPS63158743A JP61306011A JP30601186A JPS63158743A JP S63158743 A JPS63158743 A JP S63158743A JP 61306011 A JP61306011 A JP 61306011A JP 30601186 A JP30601186 A JP 30601186A JP S63158743 A JPS63158743 A JP S63158743A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- layer
- separator
- fibers
- density
- 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
- 239000000835 fiber Substances 0.000 claims abstract description 67
- 239000011230 binding agent Substances 0.000 claims abstract description 7
- 239000012510 hollow fiber Substances 0.000 claims abstract 2
- 239000010410 layer Substances 0.000 claims description 32
- 239000004745 nonwoven fabric Substances 0.000 claims description 10
- 239000002344 surface layer Substances 0.000 claims description 4
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 229920001410 Microfiber Polymers 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 abstract description 11
- -1 polypropylene Polymers 0.000 abstract description 8
- 229920001155 polypropylene Polymers 0.000 abstract description 8
- 239000011148 porous material Substances 0.000 abstract description 3
- 239000004088 foaming agent Substances 0.000 abstract description 2
- 230000004927 fusion Effects 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 238000002407 reforming Methods 0.000 abstract 2
- 238000010030 laminating Methods 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 description 13
- 239000003792 electrolyte Substances 0.000 description 8
- 239000003513 alkali Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
- 229920002544 Olefin fiber Polymers 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 239000004767 olefin fiber Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 229920002292 Nylon 6 Polymers 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000003490 calendering Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- NVNLLIYOARQCIX-MSHCCFNRSA-N Nisin Chemical compound N1C(=O)[C@@H](CC(C)C)NC(=O)C(=C)NC(=O)[C@@H]([C@H](C)CC)NC(=O)[C@@H](NC(=O)C(=C/C)/NC(=O)[C@H](N)[C@H](C)CC)CSC[C@@H]1C(=O)N[C@@H]1C(=O)N2CCC[C@@H]2C(=O)NCC(=O)N[C@@H](C(=O)N[C@H](CCCCN)C(=O)N[C@@H]2C(NCC(=O)N[C@H](C)C(=O)N[C@H](CC(C)C)C(=O)N[C@H](CCSC)C(=O)NCC(=O)N[C@H](CS[C@@H]2C)C(=O)N[C@H](CC(N)=O)C(=O)N[C@H](CCSC)C(=O)N[C@H](CCCCN)C(=O)N[C@@H]2C(N[C@H](C)C(=O)N[C@@H]3C(=O)N[C@@H](C(N[C@H](CC=4NC=NC=4)C(=O)N[C@H](CS[C@@H]3C)C(=O)N[C@H](CO)C(=O)N[C@H]([C@H](C)CC)C(=O)N[C@H](CC=3NC=NC=3)C(=O)N[C@H](C(C)C)C(=O)NC(=C)C(=O)N[C@H](CCCCN)C(O)=O)=O)CS[C@@H]2C)=O)=O)CS[C@@H]1C NVNLLIYOARQCIX-MSHCCFNRSA-N 0.000 description 1
- 108010053775 Nisin Proteins 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004309 nisin Substances 0.000 description 1
- 235000010297 nisin Nutrition 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000004094 surface-active agent Substances 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
- H01M50/44—Fibrous 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
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
- H01M50/457—Separators, membranes or diaphragms characterised by the material having a layered structure comprising three or more layers
-
- 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
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
- H01M50/417—Polyolefins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0002—Aqueous electrolytes
- H01M2300/0014—Alkaline electrolytes
-
- 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)
- Cell Separators (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はぎりオレフィン系繊維を主体とする繊維集合体
よシなるアルカリ電池用セパレーターの構成に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to the construction of a separator for alkaline batteries made of a fiber aggregate mainly composed of olefin fibers.
従来、アルカリ電池用セパレーターとしてはナイロン６
、ナイシン６６ｍ維からなる不織布やポリオレフィン系
繊維よシなる不織布が一般に使用されている。Conventionally, nylon 6 was used as a separator for alkaline batteries.
, nonwoven fabrics made of Nisin 66m fibers and nonwoven fabrics made of polyolefin fibers are generally used.
ナイロン６、ナイロン６６＠維不織布よりなるセパレー
ターは電解液の保持性がよく、放電容盪が大き−ため１
高率放電用に使用出来る利点をもって−るが、高温にお
ける耐アルカリ性等化学安定性に劣るため、アルカリ電
池用セパレーターとして用いた場合、繊維の劣化分解に
より電池寿命が短くなると−う大きな欠点があった。Separators made of nylon 6 and nylon 66@fibrous nonwoven fabric have good electrolyte retention and large discharge capacity, so 1
Although it has the advantage of being able to be used for high-rate discharge, it has poor chemical stability such as alkali resistance at high temperatures, so when used as a separator for alkaline batteries, it has the major drawback of shortening battery life due to deterioration and decomposition of the fibers. Ta.
一方、ポリオレフィン系繊維の不織布よりなるセパレー
ターは、耐アルカリ性等化学安定性には優れて−るが、
電解液の保持性に劣シ、短時間内に急速高率数？！ヲ行
う用途に用いると、リーク現象が生じて使用出来ないと
−う欠点があった。このために耐アルカリ性等化学安定
性に優れるプリオレフィン系Ｉａ維からなる不織布に界
面活性剤を付与する等の親水化処理を施すことによシ、
セパレーターの電解液の保持性を高めることが行なわれ
た。しかし、根本的にポリオレアイン系ｗ４維が疎水性
であることから、その効果は一時的であり、高率放電の
用途に用いるには十分にその目的を果すことができな−
という欠点がある。On the other hand, separators made of nonwoven polyolefin fibers have excellent chemical stability such as alkali resistance, but
Poor electrolyte retention, rapid high rate increase in a short period of time? ! When used for such purposes, a leakage phenomenon occurs, making it unusable. For this purpose, by applying a hydrophilic treatment such as adding a surfactant to a nonwoven fabric made of preolefin-based Ia fibers that have excellent chemical stability such as alkali resistance,
Efforts were made to improve the ability of the separator to retain electrolyte. However, since polyolein-based W4 fibers are fundamentally hydrophobic, their effect is temporary and cannot sufficiently fulfill their purpose when used in high-rate discharge applications.
There is a drawback.
さらに最近ではｌデニール以下の極ｍ＊ａの一すオレフ
イン系−ＩＩＡを使用したシ、繊維表面発泡繊維Ｓ異形
断面繊維等を使用することによる繊維表面積の増大から
電解液保持性の向上を狙ったものや、ＰＰ／ナイロン海
鳥型繊維等の使用も検討されているが、いずれの場合も
プリオレフィン系繊維の疎水性が大きく原因し、不織布
密度が大きくなると電解液保持性は大巾に低下する傾向
にあシる。Furthermore, recently, efforts have been made to improve electrolyte retention by increasing the fiber surface area by using monoolefin-IIA with extremely m*a of less than 1 denier, foamed fibers on the fiber surface, and irregular cross-section fibers. The use of nonwoven fabrics, PP/nylon seabird type fibers, etc. is also being considered, but in either case, the hydrophobicity of the preolefin fibers is a major cause, and as the density of the nonwoven fabric increases, the electrolyte retention property decreases significantly. There is a tendency to
〔問題点を解決するための手段〕
本発明は上記従来技術の問題点を解消すべく鋭意研究検
討した結果なされたものであり、電解液の保持性に優れ
た、高温で耐アルカリ性を有するオレフィン系繊維集合
体を断面（厚さ）方向に密度差を設け、電解液保持性に
すぐれた一体化繊維集合体よシするセパレーターを得る
ことを目的トする。[Means for Solving the Problems] The present invention was made as a result of intensive research and study in order to solve the problems of the above-mentioned conventional technology. The purpose of the present invention is to provide a separator that provides a density difference in the cross-sectional (thickness) direction of the fiber aggregate to form an integrated fiber aggregate that has excellent electrolyte retention properties.
本発明は、ぼりオレフィン系繊維集合体の不織布よシな
るセパレーターの電解液保持性能がＳ＆リオレフイン系
織繊維自体本来疎水性の故にその繊維の充填密度（以下
繊維密度という）に大きく左右されることに着眼してな
されたものである。The present invention is based on the fact that the electrolyte retention performance of a separator made of a non-woven fabric made of an aggregate of olefin fibers is greatly influenced by the packing density of the fibers (hereinafter referred to as fiber density) because the S&L olefin woven fiber itself is inherently hydrophobic. This was done with a focus on
即ち、アルカリ電池用セパレーターとして使用に耐え得
る強力及び寸法安定性を付与する繊維密度が比較的大き
い繊維集合体を中間層となし、電解液の保持性能の向上
に寄与するＩａａ密度の比較的小さ−、しかも、親水性
向上を目的として考慮された特殊繊維を配合してなる繊
維集合体を上層。That is, the intermediate layer is a fiber aggregate with a relatively high fiber density that provides strength and dimensional stability that can be used as a separator for alkaline batteries, and a relatively low Iaa density that contributes to improved electrolyte retention performance. - Moreover, the upper layer is a fiber aggregate made by blending special fibers designed to improve hydrophilicity.
下層とした三層構造とすることにより前記問題点を解消
したものである。The above-mentioned problems are solved by using a three-layer structure as the lower layer.
本発明で云うオレフィン系繊維集合体よりなる不織布と
は、ポリエチレンを低融点成分としたプリプロピレンと
の複合繊維をバインダー繊維として混合形成した繊維集
合体を１熱風処理、加熱ロールによるカレンダー加工等
公知の手法により、所望の厚さく所望の密度）のシート
状に接着された外的な接着剤を使用しな一ノーバインダ
ー不礒布を云い、主として前記オレフィン系バインダー
繊維の配合割合を増減することにより中間層と上。The nonwoven fabric made of an olefin fiber aggregate referred to in the present invention is a fiber aggregate formed by mixing composite fibers with polypropylene containing polyethylene as a low-melting point component as a binder fiber, and is processed by hot air treatment, calendering using heated rolls, etc. This is a binder-free fabric that does not use an external adhesive and is bonded into a sheet of desired thickness and density by the above method, and mainly by increasing or decreasing the blending ratio of the olefinic binder fibers. By middle and upper layer.
下層とに密度差を形成させたものである。A density difference is formed between the lower layer and the lower layer.
以下実施例に基き本発明をさらに詳しく説明する。なお
、本発明は下記実施例に限定されるものではない。The present invention will be explained in more detail below based on Examples. Note that the present invention is not limited to the following examples.
第１ＦＸｉに示す上層１及び下層２は、その繊維配合が
ポリエチレン−ポリプロピレン複合繊維であるａＳ繊維
（チッソ■製）０．９ｄｘ３８ｍｇ３５％、ポリプロピ
レン極細繊！０．５ｄＸ３８１２５％、及び第２図に示
すような発泡剤を混入して紡糸して得られた無数の細孔
５を有する発泡ぎリプロピレン繊維６Ｌ５ｄｘ３８ｍ４
０％よりなる各々２０１／讐の均一に解繊積層された繊
維集合体よりなシ、中間層３は、その繊維配合が、ｍｓ
繊維０．９ｄＸａ８１１７０％、ポリプロピレン単−繊
Ｊ！！Ｌ５ｄＸ５１■３０％ よりなる、織目付合計７
０９７Ｑの三層の積層繊維集合体を１熱風温度が１３０
℃に調整された循環式熱風処理炉内を通過させ、厚さ約
２諺にて仮接着加工を施した後、引き続き１２０℃に加
熱された一対の熱ロールによりカレンダー加工を施して
厚さ０．２１■、平均密度０．３〃−の本発明のアルカ
リ電池用セパレーター４を構成した。尚、上記セパレー
ターの厚みは用途に応じて適宜調節変更することができ
る。The upper layer 1 and the lower layer 2 shown in the first FXi are made of aS fiber (manufactured by Chisso ■) whose fiber composition is polyethylene-polypropylene composite fiber (manufactured by Chisso ■) 0.9dx38mg35%, polypropylene ultrafine fiber! Expanded polypropylene fiber 6L5dx38m4 having countless pores 5 obtained by mixing 0.5dX38125% and a foaming agent as shown in Fig. 2 and spinning.
The intermediate layer 3 is made of a uniformly defibrated and laminated fiber aggregate of 20% and 0%, respectively, and the fiber composition is ms
Fiber 0.9dXa81170%, polypropylene single fiber J! ! L5dX51■30%, total texture 7
One hot air temperature of 097Q three-layer laminated fiber aggregate is 130
After passing through a circulating hot air treatment furnace adjusted to ℃ and temporarily bonding it to a thickness of approximately 2 degrees, it was then calendered with a pair of hot rolls heated to 120 degrees Celsius to a thickness of 0. A separator 4 for an alkaline battery of the present invention having an average density of 0.21 and an average density of 0.3 was constructed. Incidentally, the thickness of the separator can be adjusted and changed as appropriate depending on the application.
また平均繊維密度はα２乃至０．５ ｔ／ａｄになすと
良好である。Further, it is preferable that the average fiber density is α2 to 0.5 t/ad.
〔比較例１〕
ＥＳ繊維α９ｄｘ３８■６０％、ポリプロピレン単一繊
維Ｌ５ｄｘ５１ｍ１４０％よりなる均一に解繊積層され
た目付７０ ｆ／ｙｌの単一構造繊維集合体を実施例同
様の熱処理加工により厚さ０．２１１１ｍに仕上げた。[Comparative Example 1] A uniform fiber aggregate with a fabric weight of 70 f/yl, consisting of ES fiber α9dx38cm60% and polypropylene single fiber L5dx51m140%, which was uniformly defibrated and laminated, was heat-treated in the same manner as in the example to have a thickness of 0. Finished at .2111m.
〔比較例２〕
上層及び下層の繊維配合が、ＢＳ繊維０．９ｄＸ３ｇ
ｍ ７０ ％、ＰＰ １．５ ｄ ｘ ５１厘３０％よ
りなる各々２０ ｔ／１の均一に解繊積層された繊維ウ
ェブよりなり、中間層のｍｍ配合が、ｗｓ繊維０．９ｄ
Ｘ３８ｍ１ｍ３０％、ナイロン６６０．８ｄ ｘ５１厘
７０％よりなる三層に積層した合計目付７０ ｌ／ｒｒ
ｌの積層繊維集合体を実施例１と同様に熱処理加工を施
して厚さ０．２１ｊのアルカリ電池セパレーターに仕上
げた０
この上記実施例及び比較例１．２のセパレーターの一般
物性及びアルカリ電池セパレーターに用−た場合の物性
を下表に示す。[Comparative Example 2] The fiber composition of the upper and lower layers is BS fiber 0.9dX3g
20 t/1 each of uniformly defibrated and laminated fiber webs consisting of 70% PP, 30% PP 1.5 d
Total basis weight 70 l/rr laminated in three layers consisting of 1 m 30% x 38 m and 70% nylon 660.8 d x 51 m
General physical properties of the separators of the above examples and comparative example 1.2 and alkaline battery separators The physical properties when used are shown in the table below.
＊１３０％ＫＯＨｍ液に加分間浸漬した後１０分間水切
り後のサンプル重量に対する保液率。*Liquid retention rate based on sample weight after being immersed in 130% KOHm solution for 10 minutes and then drained for 10 minutes.
＊２９０℃の４０％ＫＯＨ溶液中に１時間浸漬後の重量
減。*Weight loss after 1 hour immersion in 40% KOH solution at 290°C.
上記物性表から明らかなように、本発明による実施例の
三層構造のアルカリ電池用セパレーターは保液性に優れ
、中間層が高密度強度保持層としての役ｍｔ果す、−わ
ゆる中芯構造体となっているため１層間剥離を生じるこ
とがなく１テープ状に裁断カット後も充分な強力を有す
る寸法安定性に優れるものである。又オレフィン系＠
＠ １００％よシなるため、耐アルカリ性等化学的安定
性にも優れる。As is clear from the above physical property table, the three-layer separator for alkaline batteries according to the embodiment of the present invention has excellent liquid retention properties, and the intermediate layer serves as a high-density strength-retaining layer - a so-called core structure. Because it is a solid body, it does not cause peeling between layers and has sufficient strength and excellent dimensional stability even after being cut into a single tape. Also olefin type @
Since it is 100% solid, it also has excellent chemical stability such as alkali resistance.
比較例１は単一構造よりなるセパレーターであり外観及
び強力１寸法安定性嬬良好であるが保液性は著しく劣る
ものである。Comparative Example 1 is a separator having a single structure, and has good appearance, strength, and one-dimensional stability, but is extremely poor in liquid retention.
比較例２は中間層のバインダー繊維の混率が少ない上に
Ｂ８繊維に対する接着性の小さいナイロン６６繊維を多
く含むため、保液性は良好であるが、接着強度が小さく
１テープ状に裁断カットした場合層間剥離の傾向にあり
、寸法安定性に劣るものである。又、ナイロン印の混入
が原因と考えられる耐アルカリ減量が大きい。Comparative Example 2 has a low blending ratio of binder fibers in the intermediate layer and also contains a large amount of nylon 66 fibers, which have low adhesion to B8 fibers, so the liquid retention property is good, but the adhesive strength is low and it was cut into one tape shape. In this case, there is a tendency for delamination and dimensional stability is poor. In addition, the alkali resistance loss was large, which is thought to be due to the inclusion of nylon stamps.
上記の如く本発明によるセパレーターは、上層。 As described above, the separator according to the present invention has an upper layer.
下層を低密度層とし、中間層を高密度層とした一体化繊
維集合体より構成され、さらに低密度層には親水性の大
き一特殊構造の表面改質繊維を用−るため、電解液の保
持性に優れ、又中芯型構造を有するため１強力１寸法安
定性に優れたものであシ、基材不織布繊維集合体生産条
件の変動に起因する厚さく１度）の変動、バラツキが発
生し難く安定した保液性能を有する高率放電用のアルカ
リ電池用セパレーターとして極めて有用なものであるＯIt is composed of an integrated fiber aggregate with a lower density layer as a low-density layer and a middle layer as a high-density layer, and the low-density layer uses surface-modified fibers with a special structure that are highly hydrophilic, so that the electrolyte solution It has excellent retention properties, and has a core type structure, so it has excellent strength and dimensional stability.However, it has a nonwoven fabric fiber aggregate as a base material.It has excellent dimensional stability.Fluctuations in thickness (1 degree) due to fluctuations in the production conditions of the base material nonwoven fiber aggregate O is extremely useful as a separator for alkaline batteries for high-rate discharge, as it is difficult to generate and has stable liquid retention performance.
第１図は本発明の実施の１例を示すアルカリ電池用セパ
レーターの概略構成断面図、第２図は同実施例に使用す
る発泡型ぎりプロピレン繊維の斜視図である。
ｌ・・・表層、２・・・下層、３・・・中間層、４・・
・アル刀り電池セパレータ、５・・・細孔、６・・・ポ
リプロピレン繊維。FIG. 1 is a schematic cross-sectional view of a separator for alkaline batteries showing one embodiment of the present invention, and FIG. 2 is a perspective view of foamed propylene fibers used in the same embodiment. l...surface layer, 2...lower layer, 3...middle layer, 4...
- Aluminum battery separator, 5... Pore, 6... Polypropylene fiber.
Claims (2)
パレーターに於て、該セパレーターに於て、該セパレー
ターが中間層と表層、下層とにおいて断面（厚さ）方向
に密度差を有する一体化積層体で形成され、かつ中間層
が少なくとも４０重量％以上の加熱融着型バインダー繊
維を含む高密度繊維集合体で、表層及び下層が各々４０
重量％未満の加熱融着型バインダー繊維を含む上記中間
層よりも密度の低い繊維集合体で構成してなることを特
徴とするアルカリ電池用セパレーター。(1) In a nonwoven fabric separator made of a polyolefin fiber aggregate, the separator is an integrated laminate having a density difference in the cross-sectional (thickness) direction between the intermediate layer, the surface layer, and the lower layer. The intermediate layer is a high-density fiber aggregate containing at least 40% by weight of heat-fusible binder fibers, and the surface layer and lower layer each contain 40% by weight or more.
1. A separator for an alkaline battery, comprising a fiber aggregate having a lower density than the intermediate layer, which contains less than % by weight of heat-fusible binder fibers.
デニール以下の極細繊維、多孔質、中空繊維又は表面改
質繊維を配合してなる特許請求の範囲第１項記載のアル
カリ電池用セパレーター。(2) At least 60% by weight of 1 in each of the surface layer and the lower layer.
The separator for alkaline batteries according to claim 1, which contains ultrafine fibers of denier or less, porous or hollow fibers, or surface-modified fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61306011A JPS63158743A (en) | 1986-12-22 | 1986-12-22 | Separator for alkaline battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61306011A JPS63158743A (en) | 1986-12-22 | 1986-12-22 | Separator for alkaline battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63158743A true JPS63158743A (en) | 1988-07-01 |
Family
ID=17952004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61306011A Pending JPS63158743A (en) | 1986-12-22 | 1986-12-22 | Separator for alkaline battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63158743A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1022790A3 (en) * | 1999-01-25 | 2002-01-02 | Sanyo Electric Co. Ltd | Alkaline storage battery and manufacturing method of the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51134831A (en) * | 1975-05-16 | 1976-11-22 | Matsushita Electric Ind Co Ltd | Method of manufacturing separator plate for battery |
| JPS59101763A (en) * | 1982-12-01 | 1984-06-12 | Kanai Hiroyuki | Separator for alkaline battery |
| JPS60170159A (en) * | 1984-02-14 | 1985-09-03 | Matsushita Electric Ind Co Ltd | Seald type alkaline storage cell |
| JPS6139362A (en) * | 1984-07-27 | 1986-02-25 | Kanai Hiroyuki | Separator for alkaline battery |
-
1986
- 1986-12-22 JP JP61306011A patent/JPS63158743A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51134831A (en) * | 1975-05-16 | 1976-11-22 | Matsushita Electric Ind Co Ltd | Method of manufacturing separator plate for battery |
| JPS59101763A (en) * | 1982-12-01 | 1984-06-12 | Kanai Hiroyuki | Separator for alkaline battery |
| JPS60170159A (en) * | 1984-02-14 | 1985-09-03 | Matsushita Electric Ind Co Ltd | Seald type alkaline storage cell |
| JPS6139362A (en) * | 1984-07-27 | 1986-02-25 | Kanai Hiroyuki | Separator for alkaline battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1022790A3 (en) * | 1999-01-25 | 2002-01-02 | Sanyo Electric Co. Ltd | Alkaline storage battery and manufacturing method of the same |
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