JPH01253227A - Manufacture of hole sealing plug for electrolytic capacitor and manufacture of sheet for formation of hole sealing plug - Google Patents
Manufacture of hole sealing plug for electrolytic capacitor and manufacture of sheet for formation of hole sealing plugInfo
- Publication number
- JPH01253227A JPH01253227A JP8005088A JP8005088A JPH01253227A JP H01253227 A JPH01253227 A JP H01253227A JP 8005088 A JP8005088 A JP 8005088A JP 8005088 A JP8005088 A JP 8005088A JP H01253227 A JPH01253227 A JP H01253227A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- sealing plug
- rubber
- fluororesin film
- rubber sheet
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 43
- 239000003990 capacitor Substances 0.000 title claims description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 19
- 230000015572 biosynthetic process Effects 0.000 title description 2
- 229920001971 elastomer Polymers 0.000 claims abstract description 54
- 238000000034 method Methods 0.000 claims abstract description 37
- 239000002759 woven fabric Substances 0.000 claims description 17
- 238000000465 moulding Methods 0.000 claims description 8
- 238000004080 punching Methods 0.000 claims description 6
- 239000004744 fabric Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 7
- 229920001577 copolymer Polymers 0.000 abstract description 5
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 abstract description 5
- 229920000181 Ethylene propylene rubber Polymers 0.000 abstract description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract description 2
- 239000005977 Ethylene Substances 0.000 abstract description 2
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 9
- 238000003825 pressing Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- -1 polychlorotrifluoroethylene Polymers 0.000 description 4
- 239000002904 solvent Substances 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 229920005549 butyl rubber Polymers 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 2
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920002620 polyvinyl fluoride Polymers 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- MBTNHEHUPBFNRB-UHFFFAOYSA-N 1-chlorobuta-1,2,3-triene Chemical compound ClC=C=C=C MBTNHEHUPBFNRB-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 241000218645 Cedrus Species 0.000 description 1
- 102100027262 Electron transfer flavoprotein subunit beta Human genes 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 101001057122 Homo sapiens Electron transfer flavoprotein subunit beta Proteins 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
Description
【発明の詳細な説明】
九肌血狡歪透１
本発明は、電解コンデンサに使用する封口栓の製造方法
およびその封口栓形成用シートの製造方法に関し、特に
封口栓形成用シートを打抜いて小寸法の封口栓を得る場
合に、作業性のよい封口栓形成用シートを製造する方法
に関する。Detailed Description of the Invention The present invention relates to a method for manufacturing a sealing plug used in an electrolytic capacitor and a method for manufacturing a sheet for forming the sealing plug, and in particular, a method for manufacturing a sealing plug-forming sheet for use in an electrolytic capacitor. The present invention relates to a method for manufacturing a sheet for forming a closure with good workability when obtaining a closure of small size.
日の 自″、ｆらびに の１１
電解コンデンサに用いる封口栓は、コンデンサ素子を内
蔵したケースの開口部に装着されて、開口部のシールを
するものである。この封口栓は、コンデンサ内がトリク
レンなどの有機洗浄溶剤で洗浄されることから、この有
機洗浄溶剤にさらされることになり、またコンデンサ素
子に含浸した駆動用電解液の蒸発物にもさらされている
。そのため、封口栓としては、電気絶縁性、耐食性、気
密性に優れた材料で構成されたものが使用され、従来か
ら、エチレンプロピレンゴム、ブチルゴム、クロロプレ
ンゴムなどのゴムにフッ素樹脂を接着した構造のものが
使用されている（実開昭５５＝２２１０７号公報、実開
昭５５−６３１５１号公報、特開昭５５−１３８２２６
号公報、特公昭６２−３６３７７号公報）。The sealing plug used for electrolytic capacitors is attached to the opening of the case containing the capacitor element to seal the opening. Since it is cleaned with an organic cleaning solvent such as trichlene, it is exposed to this organic cleaning solvent and is also exposed to evaporated matter of the driving electrolyte that has impregnated the capacitor element.Therefore, as a sealing plug, , materials with excellent electrical insulation, corrosion resistance, and airtightness are used. Conventionally, materials with a structure in which fluororesin is bonded to rubber such as ethylene propylene rubber, butyl rubber, or chloroprene rubber have been used. (JP-A-55-22107, JP-A-55-63151, JP-A-55-138226)
(Japanese Patent Publication No. 62-36377).
このようなゴムとフッ素樹脂の２層構造になっている封
口栓の製法としては、次の方法が知られている。The following method is known as a method for manufacturing such a sealing plug having a two-layer structure of rubber and fluororesin.
（１）ゴム生地とフッ素樹脂製フィルムをあらかじめ、
封口栓の形状寸法にし、ておき、両者を加熱加圧成形し
て、ゴムを加硫させてフッ素樹脂に接合させる方法。(1) Rubber fabric and fluororesin film are prepared in advance.
A method in which the shape and dimensions of the sealing plug are made, the two are molded under heat and pressure, and the rubber is vulcanized and bonded to the fluororesin.
（２）ゴム生地（シート状）とフッ素樹脂製フィルムを
加熱加圧成形して、ゴムを加硫させてフッ素樹脂製フィ
ルムに接合して、２層シートを成形し、次いで、この２
層シートを封口栓の寸法に打抜き加工して成形する方法
。(2) Rubber fabric (sheet-like) and fluororesin film are heated and pressure-molded, the rubber is vulcanized and bonded to the fluororesin film to form a two-layer sheet, and then this two-layer sheet is formed.
A method of punching and forming a layered sheet to the dimensions of the sealing plug.
しかしながら、前者（１）の方法では、封口栓が一般に
、直径１〜４ＩｌｆｌＸ肉厚０．５〜４ＩｌｆＩ程度の
大変率さい寸法であるから、成形作業が困雛であるとい
う不都合を有する。However, in the former method (1), the sealing plug generally has very small dimensions of about 1 to 4 IlfI in diameter and 0.5 to 4IlfI in wall thickness, so it has the disadvantage that the molding operation is difficult.
これに対して後者（２）の方法では、前者（１）の方法
に比較して、打ち抜き工程が増大するが、ある程度作業
性が良くなる。しかしながら、封口栓が大変率さい寸法
であることから、後者（２）の方法にあっては、大きな
シートから多数個の封口栓を打ち抜いた場合に、封口栓
のゴム製部分同士が付着し合い、後工程でこれら封口栓
を引き剥す工程が必要となり、作業が煩雑になるという
不都合を有する。On the other hand, in the latter method (2), the punching process is increased compared to the former method (1), but the workability is improved to some extent. However, since the sealing plug has very small dimensions, in the latter method (2), when a large number of sealing plugs are punched out from a large sheet, the rubber parts of the closing plugs may stick to each other. However, a step of peeling off these sealing plugs is required in a subsequent step, which is disadvantageous in that the work becomes complicated.
また、前記（１）、（２）の方法では、加熱加圧成形時
に、ゴムの加硫時に発生するガスが、ゴム生地とフッ素
樹脂フィルムとの間から良好に排出されず、この間に空
洞が生じて封口栓の物性に悪影響を与える虞があった。In addition, in methods (1) and (2) above, gas generated during vulcanization of rubber during hot-pressure molding is not properly discharged from between the rubber fabric and the fluororesin film, and cavities are formed between the rubber fabric and the fluororesin film. There was a fear that this would adversely affect the physical properties of the sealing plug.
九肌立旦刀
本発明は、上記従来技術が有する不都合を解消するもの
であって、封口栓製造時における封口栓同士の付着を有
効に防止し得て、ゴム生地とフッ素樹脂製フィルムとの
間に空洞を生じさせずに、絶縁特性、シール特性、耐食
性に優れた電解コンデンサ用封口栓を容易に製造するこ
とのできる電解コンデンサ用封口栓の製造方法およびそ
の封口栓を形成するためのシートの製造方法を提供する
ことを目的とする。The present invention solves the inconveniences of the above-mentioned conventional techniques, and is capable of effectively preventing the sealing plugs from adhering to each other during the manufacture of the sealing plugs, and preventing the bonding between the rubber fabric and the fluororesin film. A method for manufacturing a cap for an electrolytic capacitor that can easily produce a cap for an electrolytic capacitor that has excellent insulation properties, sealing properties, and corrosion resistance without creating a cavity, and a sheet for forming the cap. The purpose is to provide a manufacturing method for.
１匪立且ｌ
かかる目的を達成するために、本発明に係る封口栓用シ
ートの製造方法は、フッ素樹脂製フィルムの接合面にゴ
ム製シートを重ね合せ、このゴム製シートの表面に織布
を介在させ、これらを加熱加圧成形することにより、ゴ
ム製シートを加硫させてフッ素樹脂製フィルムに接合さ
せることを特徴としている。また、本発明に係る電解コ
ンデンサ用封口栓の製造方法は、上記のようにして得ら
れる封口栓用シートを栓形状に打ち抜くことを特徴とし
ている。In order to achieve this object, the method for manufacturing a sealing sheet according to the present invention involves superimposing a rubber sheet on the joint surface of a fluororesin film, and applying a woven fabric to the surface of the rubber sheet. It is characterized in that the rubber sheet is vulcanized and bonded to the fluororesin film by molding them under heat and pressure. Furthermore, the method for manufacturing a cap for an electrolytic capacitor according to the present invention is characterized in that the sheet for a cap obtained as described above is punched into a plug shape.
このような本発明に係る電解コンデンサ用封口栓ないし
は封口栓形成用シートの製造方法によれば、フッ素樹脂
製フィルムの接合面にゴム製シートを重ね合せ、このゴ
ム製シートの表面に織布を介在させた状態で、これらを
加熱加圧成形するようにしているので、ゴムの加硫時に
発生するガスが織布を通して外部に流出され、ゴム製シ
ートとフッ素樹脂製フィルムとの間に空洞がほとんど生
ぜず、得られる封口栓の緒特性が向上する。According to the method for producing a sealing plug for an electrolytic capacitor or a sheet for forming a sealing plug according to the present invention, a rubber sheet is superimposed on the bonding surface of a fluororesin film, and a woven fabric is coated on the surface of the rubber sheet. Since these are heated and pressure-molded with the rubber sheet interposed, the gas generated during vulcanization of the rubber flows out through the woven fabric, creating a cavity between the rubber sheet and the fluororesin film. Almost no formation occurs, and the properties of the resulting closure are improved.
また、本発明では、加熱加圧成形工程後に織布を剥離さ
せるようにした場合に、ゴム製シートの表面に凹凸の屈
面が形成されることになるので、後工程で打ち抜かれた
封口栓におけるゴム面も凹凸の屈面となり、付着面積が
小さくなり、このゴム面相互が付着して、多数の封口栓
が塊状になるようなことはなくなる。したがって、打ち
抜き工程後に、封口栓相互を剥離させる作業が不要とな
り、作業工程の歩留が大幅に向上する。In addition, in the present invention, when the woven fabric is peeled off after the heating and pressure forming process, an uneven curved surface is formed on the surface of the rubber sheet. The rubber surface also becomes an uneven curved surface, reducing the adhesion area and preventing the rubber surfaces from adhering to each other and causing a large number of sealing plugs to form a lump. Therefore, it is not necessary to separate the sealing plugs from each other after the punching process, and the yield of the work process is greatly improved.
え五旦ｌ左煎盈墨
以下、本発明を図面に示す実施例に基づき詳細に説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail based on embodiments shown in the drawings.
第１図（Ａ）は本発明の一実施例に係る電解コンデンサ
用封口栓の断面図、第１図（Ｂ）は同図（Ａ）に示すＢ
−Ｂ線に沿う正面図、第２図は同実施例に係る封口栓を
用いた電解コンデンサの概略断面図である。FIG. 1(A) is a sectional view of a sealing plug for an electrolytic capacitor according to an embodiment of the present invention, and FIG. 1(B) is a B shown in FIG. 1(A).
-A front view taken along the line B, and FIG. 2 is a schematic cross-sectional view of an electrolytic capacitor using a sealing plug according to the same embodiment.
電解コンデンサに用いる封口栓を形成するための本発明
に係るシートの製造方法では、まず、フッ素樹脂製フィ
ルムの接合面にゴム製シートを重ね合せ、次いで、この
ゴム製シートの表面に織布を介在させて、これらを加熱
加圧成形する。この加熱加圧成形により、ゴム製シート
を加硫させてフッ素樹脂製フィルムに接合させる。In the method for manufacturing a sheet according to the present invention for forming a sealing plug used in an electrolytic capacitor, first, a rubber sheet is superimposed on the joint surface of a fluororesin film, and then a woven fabric is placed on the surface of this rubber sheet. These are heated and press-molded with the material interposed therebetween. By this heating and pressure molding, the rubber sheet is vulcanized and bonded to the fluororesin film.
フッ素樹脂製フィルムの接合面にゴム製シートを重ね合
わせる際には、一対のロール間でこれらを圧着すること
が好ましい、その後の作業工程が容易になるからである
。しかしながら、本発明にあっては、必ずしもロールで
圧着することなく、次工程の加熱加圧成形工程を行なう
ことも可能である。When superimposing the rubber sheet on the bonding surface of the fluororesin film, it is preferable to press the rubber sheet between a pair of rolls, as this facilitates the subsequent work steps. However, in the present invention, it is also possible to carry out the next heating and pressure forming step without necessarily pressing with a roll.
加熱加圧成形工程は、たとえば金型内にフッ素樹脂製フ
ィルムとゴム製シートと織布との予備積層体を入れ、金
型を加熱させながら加圧することにより行なう、加熱温
度は、たとえば１５０〜２００℃が好ましく、加圧力は
、たとえば２〜５０ｍ／−が好ましく、加熱加圧時間は
３〜１５分程度が好ましい、加熱加圧成形工程は、織布
が予め巻回固定された一対のロール間に、フッ素樹脂製
フィルムとゴム製シートとの予備積層体を通し、この積
層体を加熱加圧することにより行なうこともできる。こ
の場合には、織布を後工程で剥離する必要がなくなる。The heating and pressure molding process is carried out by placing a preliminary laminate of a fluororesin film, a rubber sheet, and a woven fabric in a mold, and applying pressure while heating the mold. The temperature is preferably 200°C, the pressing force is preferably 2 to 50 m/-, and the heating and pressing time is preferably about 3 to 15 minutes. This can also be carried out by passing a preliminary laminate of a fluororesin film and a rubber sheet between them and heating and pressing this laminate. In this case, there is no need to peel off the woven fabric in a subsequent process.
このような加熱加圧成形工程では、ゴム製シートを構成
するゴムが加硫されて、フッ素樹脂製シートに良好に接
着することになるが、このゴムの加硫時に発生するガス
（ゴム中に混入している空気ないし加硫によって発生ず
るアルコール、アセトフェノン等のガス）が、織布を通
して外部へ良好に排出される。In such a heat-pressing molding process, the rubber that makes up the rubber sheet is vulcanized and adheres well to the fluororesin sheet. The mixed air (alcohol, acetophenone, etc. gases generated by vulcanization) are effectively discharged to the outside through the woven fabric.
なお、金型内で加熱加圧成形を行なった場合には、後工
程で織布をゴム製シートから引き剥すことになる。これ
により、ゴム製シート表面に、織布の目に対応した多数
の凹凸が形成される。Note that when heating and pressure molding is performed within a mold, the woven fabric will be peeled off from the rubber sheet in a subsequent step. As a result, a large number of irregularities corresponding to the grain of the woven fabric are formed on the surface of the rubber sheet.
次いで、このようにして得られた２層シートを封口栓形
状に打ち抜き加工すれば、たとえば第１図に示す封口栓
２が多数得られる。Next, by punching the two-layer sheet thus obtained into the shape of a closure, a large number of closures 2 as shown in FIG. 1, for example, can be obtained.
本発明方法で用いるフッ素樹脂製フィルムは、最終的に
得られる第１．２図に示ずような封口栓２におけるライ
ニング部４となるものであるため、電解液および溶剤等
の化学薬品に強く、耐炎性をも有するフィルムであるこ
とが要求される。このような要求を満足するフッ素樹脂
製フィルムの材質としては、たとえばテトラフルオロエ
チレンとエチレンとの共重合体（ＥＴＦＢと略す）、テ
トラフルオロエチレンとへキサフルオロプロピレンとの
共重合体（ＦＥＰと略す）、テトラフルオロエチレンと
パーフルオロアルキルビニルエーテル共重合体（ＰＦＡ
と略す）、クロロトリフルオロエチレンとエチレン共重
合体（ＥＣＴＦＢと略す）、ポリビニルフルオライド（
ＰＶＦと称す）、ポリビニリデンフルオライド（ＰＶＤ
Ｆと略す）、ポリクロロトリフルオロエチレン（ＰＣＴ
ＦＥと略す）、ポリテトラフルオロエチレン（ＰＴＦＥ
と略す）等がある。このフッ素樹脂製フィルムの肉厚は
、０．０１〜１．０鴎であることが好ましい、このよう
なフッ素樹脂製フィルムの接合面は、予めナトリウム−
アンモニア液、もしくはナトリウム−ナフタリン−ヒド
ロフラン等の混合液で粗面化処理しであることが必要で
ある。後工程におけるゴム製シートとの接合を良好にす
るためである。The fluororesin film used in the method of the present invention is resistant to chemicals such as electrolytes and solvents because it becomes the lining part 4 of the final sealing plug 2 as shown in Figure 1.2. , it is required that the film also has flame resistance. Materials for fluororesin films that meet these requirements include, for example, a copolymer of tetrafluoroethylene and ethylene (abbreviated as ETFB) and a copolymer of tetrafluoroethylene and hexafluoropropylene (abbreviated as FEP). ), tetrafluoroethylene and perfluoroalkyl vinyl ether copolymer (PFA
), chlorotrifluoroethylene and ethylene copolymer (abbreviated as ECTFB), polyvinyl fluoride (abbreviated as ECTFB),
PVF), polyvinylidene fluoride (PVD)
F), polychlorotrifluoroethylene (PCT)
(abbreviated as FE), polytetrafluoroethylene (PTFE)
) etc. The thickness of this fluororesin film is preferably 0.01 to 1.0 mm.The joint surface of such a fluororesin film is pre-treated with sodium-
It is necessary to roughen the surface with an ammonia solution or a mixed solution of sodium-naphthalene-hydrofuran or the like. This is to improve the bonding with the rubber sheet in the subsequent process.
本発明方法で用いるゴム製シートは、最終的に得られる
第１．２図に示すような封口栓２における栓本体６とな
るものであるため、コンデンサ素子７が収容された容器
８の開口部１０を密封できる程度の柔軟性が要求される
。このような要求を満足するゴム製シートとしては、た
とえばエチレンプロピレンゴムの他に、ブチルゴムクロ
ロプレンゴムないしはその他のゴム材などをシート状に
加工したものが用いられる。Since the rubber sheet used in the method of the present invention becomes the plug body 6 of the finally obtained sealing plug 2 shown in FIG. 1.2, the opening of the container 8 in which the capacitor element 7 is housed Flexibility to the extent that 10 can be sealed is required. Rubber sheets that meet these requirements include, for example, ethylene propylene rubber, butyl rubber, chloroprene rubber, or other rubber materials processed into sheet shapes.
ゴム製シートの表面に介在される織布は、最終的に得ら
れる第１．２図に示すような封口栓におけるライニング
部４表面に微小な凹凸部１２を有する粗面を形成すると
共に、加熱加圧工程時に発生するガスを外部へ都合良く
逃すためのものであり、ある程度の耐熱性と適度な凹凸
表面とを有することが要求される。このような要求を満
足する繊布の材質としては、たとえばレーヨン、キュプ
ラ、アセテート、ビニロン、ナイロン、ビニリデン、塩
化ビニル、ポリエステル、アクリル、ポリエチレン、ポ
リプロピレン、ガラス等があり、その織方としては、た
とえば平織、あや識、朱子織、目抜平織、からみ織、模
しゃ繊、杉あや総ないしはゴムの表面に凹凸が転写され
るその他の織方がある。なお、本発明で用いる織布は、
網状物をら含む広い概念である。The woven fabric interposed on the surface of the rubber sheet forms a rough surface having minute irregularities 12 on the surface of the lining portion 4 of the final sealing stopper as shown in FIG. 1.2, and is heated. It is used to conveniently release gas generated during the pressurization process to the outside, and is required to have a certain degree of heat resistance and a moderately uneven surface. Fabric materials that satisfy these requirements include, for example, rayon, cupro, acetate, vinylon, nylon, vinylidene, vinyl chloride, polyester, acrylic, polyethylene, polypropylene, and glass, and their weaving methods include, for example, plain weave. , twill weave, satin weave, mesh plain weave, leno weave, patterned weave, cedar twill, or other weaves in which unevenness is transferred to the rubber surface. Note that the woven fabric used in the present invention is
It is a broad concept that includes net-like objects.
几皿ニガ】
以上説明してきたように、本発明に係るコンデンサ用封
口栓ないしは封口栓形成用シートの製造方法によれば、
フッ素樹脂製フィルムの接合面にゴム製シートを重ね合
せ、このゴム製シートの表面に織布を介在させた状態で
、これらを加熱加圧成形するようにしているので、ゴム
の加硫時に発生するガスが織布を通して外部に流出され
、ゴム製シートとフッ素樹脂製フィルムとの間に空洞が
ほとんど生ぜず、得られる封口栓の緒特性が向上する。As explained above, according to the method for manufacturing a capacitor sealing plug or a sheet for forming a capacitor according to the present invention,
A rubber sheet is overlaid on the joint surface of the fluororesin film, and the woven fabric is interposed on the surface of the rubber sheet, and these are heated and pressure-molded, so this problem occurs when the rubber is vulcanized. The resulting gas flows out through the woven fabric, creating almost no cavities between the rubber sheet and the fluororesin film, improving the properties of the resulting closure.
また、本発明では、加熱加圧成形工程後に織布を剥離さ
せるようにした場合に、ゴム製シートの表面に凹凸の粗
面が形成されることになるので、後工程で打ち抜かれた
封口栓におけるゴム面も凹凸の粗面となり、付着面積が
小さくなり、このゴム面相互が付着して、多数の封口栓
が塊状になるようなことはなくなる。したがって、打ち
抜き工程後に、封口栓相互を剥離させる作業が不要とな
り、作業工程の歩留が大幅に向上する。Furthermore, in the present invention, if the woven fabric is peeled off after the heating and pressure forming process, an uneven surface will be formed on the surface of the rubber sheet. The rubber surface also becomes a rough surface with unevenness, and the adhesion area becomes small, so that the rubber surfaces do not adhere to each other and a large number of sealing plugs become a lump. Therefore, it is not necessary to separate the sealing plugs from each other after the punching process, and the yield of the work process is greatly improved.
第１図（Ａ）は本発明の一実施例に係る電解コンデンサ
用封口栓の断面図、第１図（Ｂ）は同図（Ａ＞に示すＢ
−Ｂ線に沿う正面図、第２図は同実施例に係る封口栓を
用いた電解コンデンサの概略断面図である。
２・・・封口栓 ４・・・ライニング部６・・・栓
本体
代理人 弁理士 鈴 木 俊一部
組１図
（ｊ＼） （Ｂ）第 ２ 図FIG. 1(A) is a sectional view of a sealing plug for an electrolytic capacitor according to an embodiment of the present invention, and FIG. 1(B) is a
-A front view taken along the line B, and FIG. 2 is a schematic cross-sectional view of an electrolytic capacitor using a sealing plug according to the same embodiment. 2... Sealing stopper 4... Lining part 6... Stopper body agent Patent attorney Shunichi Suzuki Set 1 Figure (j\) (B) Figure 2
Claims (1)
ね合せ、このゴム製シートの表面に織布を介在させ、こ
れらを加熱加圧成形することにより、ゴム製シートを加
硫させてフッ素樹脂製フィルムに接合させることを特徴
とする電解コンデンサに用いる封口栓を形成するための
シートの製造方法。 ２）前記フッ素樹脂製フィルムの接合面は、粗面化処理
されていることを特徴とする請求項第１項に記載のシー
トの製造方法。 ３）前記ゴム製シートを加硫させてフッ素樹脂製フィル
ムに接合させた後に、ゴム製シートから前記織布を剥離
させて、ゴム製シートの表面に凹凸の粗面を形成するこ
とを特徴とする請求項第１項または第２項に記載のシー
トの製造方法。 ４）請求項第３項に記載の封口栓を形成するためのシー
トを打ち抜くことにより封口栓を形成することを特徴と
する電解コンデンサに用いる封口栓の製造方法。[Claims] 1) A rubber sheet is made by overlapping a rubber sheet on the joint surface of a fluororesin film, interposing a woven fabric on the surface of this rubber sheet, and molding them under heat and pressure. A method for manufacturing a sheet for forming a sealing plug used in an electrolytic capacitor, which comprises vulcanizing and bonding the sheet to a fluororesin film. 2) The sheet manufacturing method according to claim 1, wherein the bonding surface of the fluororesin film is roughened. 3) After the rubber sheet is vulcanized and bonded to the fluororesin film, the woven fabric is peeled off from the rubber sheet to form an uneven rough surface on the surface of the rubber sheet. The method for manufacturing a sheet according to claim 1 or 2. 4) A method for manufacturing a sealing plug for use in an electrolytic capacitor, characterized in that the sealing plug is formed by punching out the sheet for forming the sealing plug according to claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8005088A JP2625146B2 (en) | 1988-03-31 | 1988-03-31 | Method for producing sealing plug used for electrolytic capacitor and method for producing sheet for forming the sealing plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8005088A JP2625146B2 (en) | 1988-03-31 | 1988-03-31 | Method for producing sealing plug used for electrolytic capacitor and method for producing sheet for forming the sealing plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01253227A true JPH01253227A (en) | 1989-10-09 |
| JP2625146B2 JP2625146B2 (en) | 1997-07-02 |
Family
ID=13707415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8005088A Expired - Lifetime JP2625146B2 (en) | 1988-03-31 | 1988-03-31 | Method for producing sealing plug used for electrolytic capacitor and method for producing sheet for forming the sealing plug |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2625146B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0218922A (en) * | 1988-07-07 | 1990-01-23 | Matsushita Electric Ind Co Ltd | Manufacturing method of laminate sealing plug for electrolytic capacitor |
| JPH0412626U (en) * | 1990-05-24 | 1992-01-31 |
-
1988
- 1988-03-31 JP JP8005088A patent/JP2625146B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0218922A (en) * | 1988-07-07 | 1990-01-23 | Matsushita Electric Ind Co Ltd | Manufacturing method of laminate sealing plug for electrolytic capacitor |
| JPH0412626U (en) * | 1990-05-24 | 1992-01-31 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2625146B2 (en) | 1997-07-02 |
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| Date | Code | Title | Description |
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| EXPY | Cancellation because of completion of term |