WO2018061831A1 - Gasket and installation method therefor - Google Patents

Gasket and installation method therefor Download PDF

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Publication number
WO2018061831A1
WO2018061831A1 PCT/JP2017/033500 JP2017033500W WO2018061831A1 WO 2018061831 A1 WO2018061831 A1 WO 2018061831A1 JP 2017033500 W JP2017033500 W JP 2017033500W WO 2018061831 A1 WO2018061831 A1 WO 2018061831A1
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WO
WIPO (PCT)
Prior art keywords
gasket
strip
film
shaped film
shaped
Prior art date
Application number
PCT/JP2017/033500
Other languages
French (fr)
Japanese (ja)
Inventor
元 由井
隆之 堀本
Original Assignee
Nok株式会社
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Application filed by Nok株式会社 filed Critical Nok株式会社
Priority to JP2018507044A priority Critical patent/JPWO2018061831A1/en
Publication of WO2018061831A1 publication Critical patent/WO2018061831A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • 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
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Definitions

  • the present invention relates to a gasket related to sealing technology and a mounting method thereof.
  • the gasket of the present invention is used, for example, as a fuel cell gasket or as another general gasket.
  • a flat gasket having a small cross section typified by a gasket for a fuel cell is not easy to handle because of its handling problem (because the wire diameter is thin and flexible).
  • a flexible gasket main body 101 is compared with a combination of a planar gasket main body 101 made of a rubber-like elastic body and a resin frame (frame body) 102 disposed on the peripheral edge of the gasket main body 101. It is set as the structure hold
  • the resin frame 102 is attached to the fuel cell stack as it is together with the gasket body 101.
  • the weight of the gasket is constituted by the sum of the weight of the gasket main body 101 and the weight of the frame body 102, there is a problem that the weight of the gasket is large, thereby increasing the weight on the vehicle and reducing the fuel consumption.
  • the present invention aims to provide a gasket capable of ensuring the handleability of a flat gasket having a small cross section and further setting the weight of the gasket to be relatively small, and a mounting method thereof. To do.
  • the gasket of the present invention has a planar gasket body made of a rubber-like elastic body, and a resin-like strip-like film disposed on the peripheral edge of the gasket body, and the gasket body.
  • the strip-like film is characterized in that the strip-like film can be removed from the gasket body by being in a state of being adhered to each other.
  • the planar gasket body made of a rubber-like elastic body and the strip-like film made of resin are in a state of sticking to each other, so the gasket body is held by a relatively rigid strip-like film. It is possible to do. Therefore, the handleability of the gasket can be improved.
  • the strip-shaped film can be removed from the gasket body, it is possible to reduce the weight of the gasket as a whole by removing the strip-shaped film from the gasket body. Therefore, the weight of the gasket can be set relatively small.
  • a step of attaching the gasket body to the attachment location is performed, and then a step of removing the strip-shaped film from the gasket body attached to the attachment location is performed. According to this procedure, since the gasket main body is always held by the strip-shaped gasket or the mounting location (the mating mounting component such as the fuel cell separator), the handling property does not become a problem.
  • the gasket body is, for example, a flat rectangle, and a strip-shaped film is arranged on each of two opposite sides of the flat rectangle. Therefore, in this case, the gasket is constituted by a combination of a gasket body and two strip-shaped films.
  • the gasket composed of a combination of the gasket main body and two strip-shaped films is a gasket in which a gasket main body is disposed between two strip-shaped films disposed in parallel with each other.
  • One gasket unit gasket. Since the strip-like film has a strip shape as defined in the meaning, a space for arranging a plurality of gasket bodies is set between the two strip-like films by making the strip-like film continuous in the longitudinal direction. Therefore, in this case, a plurality of unit gaskets are formed in a continuous state, and this shape is convenient for handling such as shipment, transportation and storage of the gasket. When installing and using gaskets, divide each unit gasket and install and use it on the actual machine.
  • a gasket formed with a plurality of continuous unit gaskets can be handled in a compact manner by winding it in a roll with release paper.
  • the present invention it is possible to provide a gasket that can ensure the handleability of the planar gasket and can set the weight of the gasket to be relatively small, and a mounting method thereof.
  • the present invention includes the following embodiments.
  • the present invention proposes a gasket with a strip-like film. That is, the gasket is a combination of a gasket main body and a strip-shaped film, and the strip-shaped film is removed from the gasket main body after the gasket is assembled.
  • the strip-shaped film can be easily removed from the gasket body by adopting an adhesive structure in which the gasket body and the strip-shaped film are easily peeled off. After attaching the gasket body to a mating mounting part such as a fuel cell separator on a dedicated jig, the strip-shaped film is removed from the gasket body.
  • a gasket with a strip-like film can be produced in a general size of a fuel cell (a planar rectangle of about 200 ⁇ 400 mm).
  • the gasket cross-sectional shape is not particularly limited.
  • As the gasket molding material a silicone material, an EPDM material, a fluorine material, a PIB material, and the like are conceivable.
  • the strip-like film can be used as long as it can withstand the molding temperature, such as general-purpose films such as polyethylene and polypropylene, and engineering plastics such as nylon and polyferene sulfide.
  • the film thickness is about 0.05 to 0.5 mm.
  • the gasket main body and the strip-shaped film are adhered to each other between the outer peripheral surface of the gasket main body and the opposing surface of the strip-shaped film facing the outer peripheral surface.
  • Adhesion depends on the viscosity of the rubber-like elastic body when the gasket body is molded.
  • About the adhesion part of a gasket main body and a strip-shaped film, in order to make it adhere stably until a strip-shaped film is removed either one of the outer peripheral surface of a gasket main body and the opposing surface of a strip-shaped film which opposes this outer peripheral surface or
  • the adhesive area may be increased by providing a stepped shape on both sides.
  • a gasket in which a gasket main body is formed continuously with a strip-shaped film is easy to handle because there is no twisting of the gasket, and can be shipped in a roll form by being sandwiched between release papers.
  • a gasket 11 As shown in FIGS. 1 (A) and 1 (B), a gasket 11 according to this embodiment includes a planar gasket body 21 made of a rubber-like elastic body and a resin disposed outside the peripheral edge of the gasket body 21. It is comprised by the combination with the strip-shaped film 31 made from.
  • the gasket main body 21 is a flat rectangle, and strip-like films 31 are arranged on the two opposite sides of the rectangle and outside the short side 21b of the long side 21a and the short side 21b.
  • the gasket main body 21 and the strip-shaped film 31 are arranged on the same plane.
  • gasket main body 21 and the strip-shaped film 31 are adhered to each other in thickness, so that the strip-shaped film 31 can be removed from the gasket main body 21 at the time of mounting to the mounting location.
  • the gasket body 21 is used as a fuel cell gasket.
  • the gasket main body 21 is formed into a flat shape (flat plate shape) as a whole by a predetermined rubber-like elastic body (for example, silicone rubber, EPDM, fluororubber, PIB, etc.) and extends around the reaction surface of the fuel cell over the entire circumference.
  • the outer peripheral seal portion 22 for sealing is provided in a planar rectangular frame shape. Further, in order to partition the reaction surface of the fuel cell and each manifold portion, manifold seal portions 23 are integrally provided at the longitudinal direction end portions of the outer peripheral seal portion 22 (each at the four corners).
  • Reference numeral 24 denotes a penetration portion (space portion) that penetrates the gasket body 21 in the thickness direction.
  • the gasket main body 21 has a cross-sectional shape of a seal lip 26 having a mountain-shaped cross section on one or both surfaces (one surface in the figure) in the thickness direction of the sheet-like base 25 having a predetermined thickness.
  • the cross-sectional shape of the gasket body 21 is not particularly limited.
  • the strip-shaped film 31 is formed into a strip shape by a predetermined resin material (for example, a general-purpose film such as polyethylene or polypropylene, or an engineering plastic such as nylon or polyferene sulfide).
  • a predetermined resin material for example, a general-purpose film such as polyethylene or polypropylene, or an engineering plastic such as nylon or polyferene sulfide.
  • the strip shape means a rectangle or a substantially rectangular shape having a predetermined length and width, and the length thereof is equal to or substantially the same as the length of one side (short side 21b) of the gasket body 21. Is set. Therefore, the short side 21b of the gasket main body 21 and the long side of the strip-shaped film 31 are in a state of being adhered over the entire length or substantially the entire length.
  • a required number (three in the drawing) of positioning portions 32 for positioning on the flat surface when the gasket 11 is set on the mounting base 51 (see FIG. 3). It is provided as a small hole.
  • the adhesion of the gasket body 21 and the strip-shaped film 31 depends on the viscosity (adhesiveness) of the rubber-like elastic body when the gasket body 21 is molded with a rubber molding die. That is, the gasket body 21 is molded with a mold in a state where the strip-shaped film 31 is set (inserted) in a mold, and at this time, the gasket body 21 is formed into a strip shape due to the viscosity of the rubber-like elastic body that is a gasket body molding material. Adheres to the film 31.
  • the adhesive surface (thickness surface) 27 of the gasket body 21 and the adhesive surface of the strip-shaped film 31 are used. It is possible to adjust the adhesive area and the adhesive force by providing the stepped shapes 28 and 38 on one or both of the (thickness surfaces) 37.
  • the thickness of the base portion 25 of the gasket body 21 and the thickness of the strip-shaped film 31 are set to be equivalent or substantially the same, and the adhesive surface (thickness surface) 27 of the gasket body 21 and Step shapes 28 and 38 are provided on both of the adhesive surfaces (thickness surfaces) 37 of the strip-shaped film 31 so as to fit each other.
  • the thickness of the base 25 of the gasket main body 21 is set to be larger than the thickness of the strip-shaped film 31, and only the pressure-sensitive adhesive surface (thickness surface) 27 of the gasket main body 21 is stepped. 28 is provided.
  • the mounting counterpart component is the fuel cell separator 41, and the mounting location is one surface in the thickness direction of the separator 41.
  • a mounting base 51 is used for mounting.
  • positioning portions 52 for positioning on the plane when the gasket 11 is set on the pedestal 51 are provided as a required number of projections (pins) in the figure (three on one side, six on one side). Is provided. Therefore, the gasket 11 is positioned on the plane 51 with respect to the pedestal 51 by inserting the hole-shaped positioning portion 32 provided in the strip-shaped film 31 with the protruding positioning portion 52.
  • the installation procedure is as follows.
  • the separator 41 is set at a predetermined position on the pedestal 51, and the adhesive 61 is applied on the plane of the separator 41 to be the mounting location.
  • the gasket 11 is set on the base 51 and on the plane of the separator 41 while being positioned by the positioning portions 32 and 52, and the plane of the separator 41 is set by the adhesive 61.
  • the gasket main body 21 is bonded to the mounting location.
  • the protruding positioning portion 52 is removed from the pedestal 51.
  • the adhesive body which consists of the separator 41 and the gasket 11 is removed from the base 51, and an adhesive body is mounted on the 2nd base which does not have a positioning part.
  • the strip-shaped film 31 is peeled off from the gasket body 21 in a state where the separator 41 and the gasket body 21 are fixed on the pedestal 51. Therefore, an adhesive body composed of the separator 41 and the gasket body 21 with the strip-shaped film 31 removed is manufactured as a component for the fuel cell.
  • the planar gasket body 21 made of a rubber-like elastic body and the strip-like film 31 made of a resin are adhered to each other. It can be held by the strip film 31 having a relatively high rigidity. Therefore, the handling property of the gasket 11 or the gasket body 21 can be improved in a state before the gasket body 21 is mounted at the mounting location.
  • the gasket 11 of this invention consists of a combination of the gasket main body 21 and the strip-shaped film 31, the length of the strip-shaped film 31 is set long and a plurality of gasket main bodies 21 are arranged to make a plurality of gaskets 11 continuous. It can be considered to be molded into.
  • a plurality of strip-shaped films 31 are continuous in the longitudinal direction to form one strip-shaped film 31A, and between the two strip-shaped films 31A arranged in parallel to each other.
  • a plurality of gasket main bodies 21 are arranged. Therefore, according to this example, a plurality of gaskets 11 can be formed continuously.
  • the continuous body of the gasket 11 which consists of two strip

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fuel Cell (AREA)
  • Gasket Seals (AREA)

Abstract

The purpose of the present invention is to provide: a gasket for which the ease of handling of small cross-section planar gaskets can be maintained and in addition, the gasket weight can be set to be relatively small; and an installation method therefor. In order to achieve said purpose, the gasket has a planar gasket body made of a rubber-like elastic body and a rectangular resin film disposed on the perimeter of the gasket body. The rectangular film is removable from the gasket body as a result of the gasket body and the rectangular film being adhered to each other. As a method for installing the gasket on an installation position, a step for installing the gasket body on the installation position and a step for removing the rectangular film from the gasket body that has been installed on the installation position are performed sequentially.

Description

ガスケット及びその装着方法Gasket and its mounting method
　本発明は、シール技術に係るガスケットとその装着方法に関する。本発明のガスケットは例えば、燃料電池用ガスケットとして用いられ、またはその他の一般ガスケットとして用いられる。 The present invention relates to a gasket related to sealing technology and a mounting method thereof. The gasket of the present invention is used, for example, as a fuel cell gasket or as another general gasket.
　燃料電池用ガスケットに代表される小断面の平面状ガスケットは、その取り扱い性の問題（線径が細く柔軟であることからハンドリング性が良くない）から例えば図７（Ａ）（Ｂ）に示すように、ゴム状弾性体よりなる平面状のガスケット本体１０１と、このガスケット本体１０１の周縁部に配置された樹脂製の枠体（フレーム体）１０２との組み合わせとされ、柔軟なガスケット本体１０１を比較的剛性の高い枠体１０２によって保持する構成とされている（特許文献１参照）。 For example, as shown in FIGS. 7A and 7B, a flat gasket having a small cross section typified by a gasket for a fuel cell is not easy to handle because of its handling problem (because the wire diameter is thin and flexible). Further, a flexible gasket main body 101 is compared with a combination of a planar gasket main body 101 made of a rubber-like elastic body and a resin frame (frame body) 102 disposed on the peripheral edge of the gasket main body 101. It is set as the structure hold | maintained by the frame 102 with high mechanical rigidity (refer patent document 1).
特開２０１１－２３８３６４号公報JP 2011-238364 A
　しかしながら上記従来技術において、樹脂製の枠体１０２は、ガスケット本体１０１と共にそのまま燃料電池スタックに装着されるものとされている。 However, in the above prior art, the resin frame 102 is attached to the fuel cell stack as it is together with the gasket body 101.
　したがってガスケットの重量が、ガスケット本体１０１の重量および枠体１０２の重量の和によって構成されるため、ガスケットの重量が大きく、よって車載重量が増加し、燃費が低下する等の問題がある。 Therefore, since the weight of the gasket is constituted by the sum of the weight of the gasket main body 101 and the weight of the frame body 102, there is a problem that the weight of the gasket is large, thereby increasing the weight on the vehicle and reducing the fuel consumption.
　本発明は以上の点に鑑みて、小断面の平面状ガスケットの取り扱い性を確保し、しかもそのうえで、ガスケットの重量を比較的小さく設定することができるガスケットとその装着方法を提供することを目的とする。 In view of the above points, the present invention aims to provide a gasket capable of ensuring the handleability of a flat gasket having a small cross section and further setting the weight of the gasket to be relatively small, and a mounting method thereof. To do.
　上記目的を達成するため、本発明のガスケットは、ゴム状弾性体よりなる平面状のガスケット本体と、前記ガスケット本体の周縁部に配置された樹脂製の短冊状フィルムとを有し、前記ガスケット本体および前記短冊状フィルムは、互いに粘着した状態とされることにより前記ガスケット本体から前記短冊状フィルムを取り外し可能とされていることを特徴とする。 In order to achieve the above object, the gasket of the present invention has a planar gasket body made of a rubber-like elastic body, and a resin-like strip-like film disposed on the peripheral edge of the gasket body, and the gasket body. The strip-like film is characterized in that the strip-like film can be removed from the gasket body by being in a state of being adhered to each other.
　上記構成を備える本発明では、ゴム状弾性体よりなる平面状のガスケット本体および樹脂よりなる短冊状フィルムが互いに粘着した状態とされているため、ガスケット本体を比較的剛性の高い短冊状フィルムによって保持することが可能とされている。したがってガスケットの取り扱い性を向上させることができる。 In the present invention having the above-described configuration, the planar gasket body made of a rubber-like elastic body and the strip-like film made of resin are in a state of sticking to each other, so the gasket body is held by a relatively rigid strip-like film. It is possible to do. Therefore, the handleability of the gasket can be improved.
　また、ガスケット本体から短冊状フィルムを取り外し可能とされているため、ガスケット本体から短冊状フィルムを取り外すことにより、ガスケット全体としての重量を軽減することが可能とされている。したがってガスケットの重量を比較的小さく設定することができる。 Also, since the strip-shaped film can be removed from the gasket body, it is possible to reduce the weight of the gasket as a whole by removing the strip-shaped film from the gasket body. Therefore, the weight of the gasket can be set relatively small.
　ガスケットを装着箇所に装着する手順としては、ガスケット本体を装着箇所に取り付ける工程を行い、次いで、装着箇所に取り付けたガスケット本体から短冊状フィルムを取り外す工程を行う。この手順によればガスケット本体が短冊状ガスケットまたは装着箇所（燃料電池セパレータ等の相手装着部品）によって常に保持された状態とされるため、その取り扱い性が問題となることがない。 As a procedure for attaching the gasket to the attachment location, a step of attaching the gasket body to the attachment location is performed, and then a step of removing the strip-shaped film from the gasket body attached to the attachment location is performed. According to this procedure, since the gasket main body is always held by the strip-shaped gasket or the mounting location (the mating mounting component such as the fuel cell separator), the handling property does not become a problem.
　ガスケット本体は例えばこれを平面長方形とし、この平面長方形における対向２辺にそれぞれ短冊状フィルムを配置する。したがってこの場合、ガスケットは、ガスケット本体および２本の短冊状フィルムの組み合わせによって構成される。 The gasket body is, for example, a flat rectangle, and a strip-shaped film is arranged on each of two opposite sides of the flat rectangle. Therefore, in this case, the gasket is constituted by a combination of a gasket body and two strip-shaped films.
　上記ガスケット本体および２本の短冊状フィルムの組み合わせよりなるガスケットはこれを換言すると、互いに平行に配置した２本の短冊状フィルムの間にガスケット本体を配置したガスケットであり、本発明では、これが１つのガスケット（単位ガスケット）とされる。短冊状フィルムは字義のとおり短冊状であるので、これを長手方向に連続させて帯状フィルムとすることにより２本の帯状フィルムの間にガスケット本体を複数配置するスペースが設定される。したがってこの場合、単位ガスケットが複数連続した状態で成形されることになり、この形状はガスケットの出荷、搬送および保管等の取り扱いに便利である。ガスケットの装着・使用に際しては単位ガスケットごとに分断して実機に装着・使用する。 In other words, the gasket composed of a combination of the gasket main body and two strip-shaped films is a gasket in which a gasket main body is disposed between two strip-shaped films disposed in parallel with each other. One gasket (unit gasket). Since the strip-like film has a strip shape as defined in the meaning, a space for arranging a plurality of gasket bodies is set between the two strip-like films by making the strip-like film continuous in the longitudinal direction. Therefore, in this case, a plurality of unit gaskets are formed in a continuous state, and this shape is convenient for handling such as shipment, transportation and storage of the gasket. When installing and using gaskets, divide each unit gasket and install and use it on the actual machine.
　また、この単位ガスケットが複数連続した状態で成形されるガスケットはこれを離型紙と共にロール状に巻回することにより、コンパクトに取り扱うことが可能とされる。 Also, a gasket formed with a plurality of continuous unit gaskets can be handled in a compact manner by winding it in a roll with release paper.
　本発明によれば、平面状ガスケットの取り扱い性を確保することができ、しかもそのうえで、ガスケットの重量を比較的小さく設定することができるガスケットとその装着方法を提供することができる。 According to the present invention, it is possible to provide a gasket that can ensure the handleability of the planar gasket and can set the weight of the gasket to be relatively small, and a mounting method thereof.
本発明の実施例に係るガスケットを示す図で、（Ａ）はその平面図、（Ｂ）はその要部拡大断面図であって（Ａ）におけるＣ－Ｃ線拡大断面図BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the gasket which concerns on the Example of this invention, (A) is the top view, (B) is the principal part expanded sectional view, and CC sectional expanded sectional view in (A) （Ａ）ないし（Ｄ）とも同ガスケットにおける粘着構造の他の例を示す断面図(A) thru | or (D) sectional drawing which shows the other example of the adhesion structure in the same gasket 同ガスケットを台座上でセパレータと組み合わせた状態を示す図で、（Ａ）はその平面図、（Ｂ）はその断面図であって（Ａ）におけるＤ－Ｄ線断面図The figure which shows the state which combined the gasket with the separator on a base, (A) is the top view, (B) is the sectional drawing, and the DD sectional view taken on the line in (A) （Ａ）ないし（Ｄ）とも同ガスケットの装着方法を示す説明図(A) thru | or (D) explanatory drawing which shows the mounting method of the gasket 同ガスケット連続成形品の一部平面図Partial plan view of the gasket continuous molded product 同ガスケット連続成形品（ロール状）の一部斜視図Partial perspective view of the gasket continuous molded product (roll shape) 従来例に係るガスケットを示す図で、（Ａ）はその平面図、（Ｂ）はその要部拡大断面図であって（Ａ）におけるＥ－Ｅ線拡大断面図It is a figure which shows the gasket which concerns on a prior art example, (A) is the top view, (B) is the principal part expanded sectional view, and the EE line expanded sectional view in (A)
　本発明には、以下の実施形態が含まれる。
（１）
　上記目的を達成するため、本発明は、短冊状フィルム付きガスケットを提案する。すなわち、ガスケットをガスケット本体および短冊状フィルムの組み合わせとし、ガスケット組み付け後にガスケット本体から短冊状フィルムを取り除く構成とする。ガスケット本体および短冊状フィルムを剥離しやすい粘着構造とすることによりガスケット本体から短冊状フィルムを容易に取り除くことが可能とされる。専用の治具上でガスケット本体を燃料電池セパレータ等の相手取付部品に取り付けした後に、ガスケット本体から短冊状フィルムを取り除く。 The present invention includes the following embodiments.
(1)
In order to achieve the above object, the present invention proposes a gasket with a strip-like film. That is, the gasket is a combination of a gasket main body and a strip-shaped film, and the strip-shaped film is removed from the gasket main body after the gasket is assembled. The strip-shaped film can be easily removed from the gasket body by adopting an adhesive structure in which the gasket body and the strip-shaped film are easily peeled off. After attaching the gasket body to a mating mounting part such as a fuel cell separator on a dedicated jig, the strip-shaped film is removed from the gasket body.
（２）
　短冊状フィルム付きガスケットは燃料電池の一般的なサイズで作成することが可能である（２００×４００ｍｍ程度の平面長方形）。ガスケット断面形状については特に限定されない。ガスケット成形材料については、シリコーン材、ＥＰＤＭ材、フッ素材、ＰＩＢ材等が考えられる。短冊状フィルムについては、ポリエチレン、ポリプロピレン等の汎用フィルムやナイロン、ポリフェレンサルファイド等のエンジニアリングプラスチック等、成形温度に耐えるフィルムであれば使用可能である。フィルム厚みについては０．０５～０．５ｍｍ程度とする。 (2)
A gasket with a strip-like film can be produced in a general size of a fuel cell (a planar rectangle of about 200 × 400 mm). The gasket cross-sectional shape is not particularly limited. As the gasket molding material, a silicone material, an EPDM material, a fluorine material, a PIB material, and the like are conceivable. The strip-like film can be used as long as it can withstand the molding temperature, such as general-purpose films such as polyethylene and polypropylene, and engineering plastics such as nylon and polyferene sulfide. The film thickness is about 0.05 to 0.5 mm.
（３）
　短冊状フィルム付きガスケットのセパレータへの装着手順としては、
　（ａ）台座の所定位置にセパレータを設置し、これと前後して、セパレータの所定位置に接着剤を塗布する、
　（ｂ）セパレータにガスケットを重ね、前記接着剤によってセパレータにガスケット本体を取り付ける、
　（ｃ）ガスケット本体から短冊状フィルムを取り外す（引き剥がす）、
となる。セパレータに事前に接着剤を塗布することで、ガスケット本体がセパレータからずれることなく短冊状フィルムを取り外すことができる。 (3)
As a procedure for mounting the gasket with strip-shaped film on the separator,
(A) A separator is installed at a predetermined position of the base, and before and after this, an adhesive is applied to the predetermined position of the separator.
(B) Overlay the gasket on the separator, and attach the gasket body to the separator with the adhesive.
(C) Remove the strip-shaped film from the gasket body (stripping),
It becomes. By applying an adhesive in advance to the separator, the strip-shaped film can be removed without the gasket body being displaced from the separator.
（４）
　ガスケット本体と短冊状フィルムは、ガスケット本体の外周面とこの外周面に対向する短冊状フィルムの対向面とで粘着される。粘着はガスケット本体成形時におけるゴム状弾性体の備える粘性による。ガスケット本体と短冊状フィルムの粘着箇所については、短冊状フィルムを取り外すまで安定して粘着させておくため、ガスケット本体の外周面とこの外周面に対向する短冊状フィルムの対向面の何れか一方または双方に段差形状を設けることにより、粘着面積を増大させても良い。 (4)
The gasket main body and the strip-shaped film are adhered to each other between the outer peripheral surface of the gasket main body and the opposing surface of the strip-shaped film facing the outer peripheral surface. Adhesion depends on the viscosity of the rubber-like elastic body when the gasket body is molded. About the adhesion part of a gasket main body and a strip-shaped film, in order to make it adhere stably until a strip-shaped film is removed, either one of the outer peripheral surface of a gasket main body and the opposing surface of a strip-shaped film which opposes this outer peripheral surface or The adhesive area may be increased by providing a stepped shape on both sides.
（５）
　短冊状フィルムへは連続してガスケット本体を成形することが可能である。短冊状フィルムに連続してガスケット本体を成形したガスケットは、ガスケットのねじれ等もないため取り扱いについての自動化が容易であり、離型紙で挟むことでロール形態での出荷にも対応が可能となる。 (5)
It is possible to continuously mold the gasket body on the strip-shaped film. A gasket in which a gasket main body is formed continuously with a strip-shaped film is easy to handle because there is no twisting of the gasket, and can be shipped in a roll form by being sandwiched between release papers.
　つぎに本発明の実施例を図面にしたがって説明する。 Next, embodiments of the present invention will be described with reference to the drawings.
　図１（Ａ）（Ｂ）に示すように、当該実施例に係るガスケット１１は、ゴム状弾性体よりなる平面状のガスケット本体２１と、このガスケット本体２１の周縁部の外側に配置された樹脂製の短冊状フィルム３１との組み合わせにより構成されている。ガスケット本体２１は平面長方形とされ、この長方形における対向２辺であって長辺２１ａおよび短辺２１ｂのうちの短辺２１ｂの外側にそれぞれ短冊状フィルム３１が配置されている。ガスケット本体２１および短冊状フィルム３１は同一平面上に配置されている。また、ガスケット本体２１および短冊状フィルム３１は互いの厚み面にて粘着した状態とされ、これにより装着箇所への装着時にガスケット本体２１から短冊状フィルム３１を取り外すことが可能とされている。ガスケット本体２１は燃料電池用ガスケットとして用いられる。 As shown in FIGS. 1 (A) and 1 (B), a gasket 11 according to this embodiment includes a planar gasket body 21 made of a rubber-like elastic body and a resin disposed outside the peripheral edge of the gasket body 21. It is comprised by the combination with the strip-shaped film 31 made from. The gasket main body 21 is a flat rectangle, and strip-like films 31 are arranged on the two opposite sides of the rectangle and outside the short side 21b of the long side 21a and the short side 21b. The gasket main body 21 and the strip-shaped film 31 are arranged on the same plane. In addition, the gasket main body 21 and the strip-shaped film 31 are adhered to each other in thickness, so that the strip-shaped film 31 can be removed from the gasket main body 21 at the time of mounting to the mounting location. The gasket body 21 is used as a fuel cell gasket.
　ガスケット本体２１は、所定のゴム状弾性体（例えばシリコーンゴム、ＥＰＤＭ、フッ素ゴム、ＰＩＢ等）によって全体として平面状（平板状）に成形され、燃料電池の反応面の周りを全周に亙ってシールする外周シール部２２が平面長方形の枠状に設けられている。また、燃料電池の反応面と各マニホールド部とを仕切るため、外周シール部２２の長手方向端部にそれぞれ（四隅にそれぞれ）マニホールド用シール部２３が一体に設けられている。符号２４は、ガスケット本体２１をその厚み方向に貫通する貫通部（空間部）を示している。 The gasket main body 21 is formed into a flat shape (flat plate shape) as a whole by a predetermined rubber-like elastic body (for example, silicone rubber, EPDM, fluororubber, PIB, etc.) and extends around the reaction surface of the fuel cell over the entire circumference. The outer peripheral seal portion 22 for sealing is provided in a planar rectangular frame shape. Further, in order to partition the reaction surface of the fuel cell and each manifold portion, manifold seal portions 23 are integrally provided at the longitudinal direction end portions of the outer peripheral seal portion 22 (each at the four corners). Reference numeral 24 denotes a penetration portion (space portion) that penetrates the gasket body 21 in the thickness direction.
　ガスケット本体２１の断面形状は図１（Ｂ）に示すように、所定の厚みを備えるシート状の基部２５の厚み方向一方または双方の面（図では一方の面）に断面山形を呈するシールリップ２６を一体成形した形状とされているが、このガスケット本体２１の断面形状は特に限定されるものではない。 As shown in FIG. 1 (B), the gasket main body 21 has a cross-sectional shape of a seal lip 26 having a mountain-shaped cross section on one or both surfaces (one surface in the figure) in the thickness direction of the sheet-like base 25 having a predetermined thickness. However, the cross-sectional shape of the gasket body 21 is not particularly limited.
　短冊状フィルム３１は、所定の樹脂材（例えばポリエチレン、ポリプロピレン等の汎用フィルム、またはナイロン、ポリフェレンサルファイド等のエンジニアリングプラスチック等）によって短冊状に成形されている。ここに短冊状とは、所定の長さおよび幅を備える長方形ないし略長方形状のことを云い、このうちの長さがガスケット本体２１の１辺（短辺２１ｂ）の長さと同等ないし略同等に設定されている。したがってガスケット本体２１の短辺２１ｂと短冊状フィルム３１の長辺がその全長ないし略全長に亙って粘着した状態とされている。 The strip-shaped film 31 is formed into a strip shape by a predetermined resin material (for example, a general-purpose film such as polyethylene or polypropylene, or an engineering plastic such as nylon or polyferene sulfide). Here, the strip shape means a rectangle or a substantially rectangular shape having a predetermined length and width, and the length thereof is equal to or substantially the same as the length of one side (short side 21b) of the gasket body 21. Is set. Therefore, the short side 21b of the gasket main body 21 and the long side of the strip-shaped film 31 are in a state of being adhered over the entire length or substantially the entire length.
　短冊状フィルム３１の平面上には、当該ガスケット１１を装着作業用の台座５１（図３参照）にセットするときに平面上の位置決めをなすための位置決め部３２が所要数（図では３箇所）の小孔として設けられている。 On the flat surface of the strip-shaped film 31, a required number (three in the drawing) of positioning portions 32 for positioning on the flat surface when the gasket 11 is set on the mounting base 51 (see FIG. 3). It is provided as a small hole.
　尚、ガスケット本体２１および短冊状フィルム３１の粘着は、ガスケット本体２１をゴム成形用の金型で成形するときのゴム状弾性体の粘性（粘着性）による。すなわち短冊状フィルム３１を金型にセット（インサート）した状態でガスケット本体２１を金型で成形し、このときガスケット本体成形材料であるゴム状弾性体が材質上備える粘性によってガスケット本体２１が短冊状フィルム３１に対し粘着する。 The adhesion of the gasket body 21 and the strip-shaped film 31 depends on the viscosity (adhesiveness) of the rubber-like elastic body when the gasket body 21 is molded with a rubber molding die. That is, the gasket body 21 is molded with a mold in a state where the strip-shaped film 31 is set (inserted) in a mold, and at this time, the gasket body 21 is formed into a strip shape due to the viscosity of the rubber-like elastic body that is a gasket body molding material. Adheres to the film 31.
　粘着力の大きさは粘着面積に対し相関の関係にあるため、図２（Ａ）ないし（Ｄ）に示すように、ガスケット本体２１の粘着面（厚み面）２７および短冊状フィルム３１の粘着面（厚み面）３７の何れか一方または双方に段差形状２８，３８を設けることにより粘着面積および粘着力を調整することが可能とされる。 Since the magnitude of the adhesive strength has a correlation with the adhesive area, as shown in FIGS. 2A to 2D, the adhesive surface (thickness surface) 27 of the gasket body 21 and the adhesive surface of the strip-shaped film 31 are used. It is possible to adjust the adhesive area and the adhesive force by providing the stepped shapes 28 and 38 on one or both of the (thickness surfaces) 37.
　図２（Ａ）および（Ｂ）に示す例では、ガスケット本体２１の基部２５の厚みと短冊状フィルム３１の厚みが同等ないし略同等に設定され、ガスケット本体２１の粘着面（厚み面）２７および短冊状フィルム３１の粘着面（厚み面）３７の双方にそれぞれ、互いに嵌り合う形状の段差形状２８，３８が設けられている。 In the example shown in FIGS. 2A and 2B, the thickness of the base portion 25 of the gasket body 21 and the thickness of the strip-shaped film 31 are set to be equivalent or substantially the same, and the adhesive surface (thickness surface) 27 of the gasket body 21 and Step shapes 28 and 38 are provided on both of the adhesive surfaces (thickness surfaces) 37 of the strip-shaped film 31 so as to fit each other.
　図２（Ｃ）および（Ｄ）に示す例では、ガスケット本体２１の基部２５の厚みが短冊状フィルム３１の厚みよりも大きく設定され、ガスケット本体２１の粘着面（厚み面）２７のみに段差形状２８が設けられている。 In the example shown in FIGS. 2C and 2D, the thickness of the base 25 of the gasket main body 21 is set to be larger than the thickness of the strip-shaped film 31, and only the pressure-sensitive adhesive surface (thickness surface) 27 of the gasket main body 21 is stepped. 28 is provided.
　つぎに、上記構成のガスケット１１を装着箇所に装着する装着方法を説明する。 Next, a mounting method for mounting the gasket 11 having the above-described configuration at a mounting location will be described.
　当該実施例では図３に示すように、装着の相手部品を燃料電池用セパレータ４１とし、装着箇所をセパレータ４１の厚み方向一方の面とする。装着には、装着作業用の台座５１を用いる。台座５１の平面上には、当該台座５１にガスケット１１をセットするときに平面上の位置決めをなすための位置決め部５２が所要数（図では片側３箇所、都合６箇所）の突起（ピン）として設けられている。したがってこの突起状の位置決め部５２を短冊状フィルム３１に設けた孔状の位置決め部３２を差し込むことにより、台座５１に対しガスケット１１が平面上位置決めされる。装着の手順は以下のとおりとなる。 In this embodiment, as shown in FIG. 3, the mounting counterpart component is the fuel cell separator 41, and the mounting location is one surface in the thickness direction of the separator 41. For mounting, a mounting base 51 is used. On the plane of the pedestal 51, positioning portions 52 for positioning on the plane when the gasket 11 is set on the pedestal 51 are provided as a required number of projections (pins) in the figure (three on one side, six on one side). Is provided. Therefore, the gasket 11 is positioned on the plane 51 with respect to the pedestal 51 by inserting the hole-shaped positioning portion 32 provided in the strip-shaped film 31 with the protruding positioning portion 52. The installation procedure is as follows.
　すなわち先ず、図４（Ａ）に示すように、台座５１上の所定位置にセパレータ４１をセットし、装着箇所となるセパレータ４１の平面上に接着剤６１を塗布する。 That is, first, as shown in FIG. 4 (A), the separator 41 is set at a predetermined position on the pedestal 51, and the adhesive 61 is applied on the plane of the separator 41 to be the mounting location.
　次いで、図４（Ｂ）に示すように、位置決め部３２，５２で位置決めしつつ、台座５１上であってかつセパレータ４１の平面上にガスケット１１をセットし、上記接着剤６１によってセパレータ４１の平面上であって装着箇所にガスケット本体２１を接着する。 Next, as shown in FIG. 4B, the gasket 11 is set on the base 51 and on the plane of the separator 41 while being positioned by the positioning portions 32 and 52, and the plane of the separator 41 is set by the adhesive 61. The gasket main body 21 is bonded to the mounting location.
　次いで、図４（Ｃ）に示すように、台座５１から突起状の位置決め部５２を取り外す。または台座５１からセパレータ４１およびガスケット１１よりなる接着体を取り外し、位置決め部を有しない第２台座上に接着体を載せる。 Next, as shown in FIG. 4C, the protruding positioning portion 52 is removed from the pedestal 51. Or the adhesive body which consists of the separator 41 and the gasket 11 is removed from the base 51, and an adhesive body is mounted on the 2nd base which does not have a positioning part.
　次いで、図４（Ｄ）に示すように、セパレータ４１およびガスケット本体２１を台座５１上に固定した状態で、短冊状フィルム３１をガスケット本体２１から引き剥がす。したがってこれにより短冊状フィルム３１が取り外された状態の、セパレータ４１およびガスケット本体２１よりなる接着体が燃料電池用の構成部品として製作される。 Next, as shown in FIG. 4D, the strip-shaped film 31 is peeled off from the gasket body 21 in a state where the separator 41 and the gasket body 21 are fixed on the pedestal 51. Therefore, an adhesive body composed of the separator 41 and the gasket body 21 with the strip-shaped film 31 removed is manufactured as a component for the fuel cell.
　上記構成を備えるガスケット１１においては、ゴム状弾性体よりなる平面状のガスケット本体２１および樹脂よりなる短冊状フィルム３１が互いに粘着した状態とされているため、ゴム状弾性体よりなるガスケット本体２１を比較的剛性の高い短冊状フィルム３１によって保持することが可能とされている。したがってガスケット本体２１を装着箇所に装着する以前の状態においてガスケット１１ないしガスケット本体２１の取り扱い性を向上させることができる。 In the gasket 11 having the above configuration, the planar gasket body 21 made of a rubber-like elastic body and the strip-like film 31 made of a resin are adhered to each other. It can be held by the strip film 31 having a relatively high rigidity. Therefore, the handling property of the gasket 11 or the gasket body 21 can be improved in a state before the gasket body 21 is mounted at the mounting location.
　また、ガスケット本体２１を装着箇所に装着するときにガスケット本体２１から短冊状フィルム３１を取り外すことにより、装着状態におけるガスケット１１の重量を軽減することが可能とされている。したがって車載用燃料電池の構成部品としてのガスケット１１の重量を軽減することができ、延いては車載重量が増加して燃費が低下するのを抑制することができる。 Also, it is possible to reduce the weight of the gasket 11 in the mounted state by removing the strip-shaped film 31 from the gasket body 21 when the gasket body 21 is mounted at the mounting location. Therefore, it is possible to reduce the weight of the gasket 11 as a constituent part of the on-vehicle fuel cell, and it is possible to suppress a reduction in fuel consumption due to an increase in the on-board weight.
　尚、本発明のガスケット１１は、ガスケット本体２１および短冊状フィルム３１の組み合わせよりなるため、短冊状フィルム３１の長さを長く設定してガスケット本体２１を複数配置することによりガスケット１１を複数連続的に成形することが考えられる。 In addition, since the gasket 11 of this invention consists of a combination of the gasket main body 21 and the strip-shaped film 31, the length of the strip-shaped film 31 is set long and a plurality of gasket main bodies 21 are arranged to make a plurality of gaskets 11 continuous. It can be considered to be molded into.
　この場合の例として、図５のガスケット１１では、短冊状フィルム３１がその長手方向に複数連続することにより１本の帯状フィルム３１Ａとされ、互いに平行に配置した２本の帯状フィルム３１Ａの間にガスケット本体２１が複数配置されている。したがってこの例によれば、複数のガスケット１１を連続して成形することができる。 As an example of this case, in the gasket 11 of FIG. 5, a plurality of strip-shaped films 31 are continuous in the longitudinal direction to form one strip-shaped film 31A, and between the two strip-shaped films 31A arranged in parallel to each other. A plurality of gasket main bodies 21 are arranged. Therefore, according to this example, a plurality of gaskets 11 can be formed continuously.
　また、図６のガスケット１１では、２本の帯状フィルム３１Ａおよび複数のガスケット本体２１よりなるガスケット１１の連続体が粘着防止のための離型紙７１と共にロール状に巻回されている。したがってこの例によれば、複数のガスケット１１をコンパクトに取り扱うことができる。 Moreover, in the gasket 11 of FIG. 6, the continuous body of the gasket 11 which consists of two strip | belt-shaped films 31A and the some gasket main body 21 is wound with the release paper 71 for adhesion prevention in roll shape. Therefore, according to this example, the plurality of gaskets 11 can be handled in a compact manner.
　１１　ガスケット
　２１　ガスケット本体
　２１ａ　長辺
　２１ｂ　短辺
　２２　外周シール部
　２３　マニホールド用シール部
　２４　貫通部
　２５　基部
　２６　シールリップ
　２７，３７　粘着面
　２８，３８　段差形状
　３１　短冊状フィルム
　３２，５２　位置決め部
　４１　セパレータ
　５１　台座
　６１　接着剤
　７１　離型紙 DESCRIPTION OF SYMBOLS 11 Gasket 21 Gasket body 21a Long side 21b Short side 22 Peripheral seal part 23 Manifold seal part 24 Through part 25 Base part 26 Seal lip 27, 37 Adhesive surface 28, 38 Step shape 31 Strip-shaped film 32, 52 Positioning part 41 Separator 51 Pedestal 61 Adhesive 71 Release paper

Claims (5)

  1. 　ゴム状弾性体よりなる平面状のガスケット本体と、前記ガスケット本体の周縁部に配置された樹脂製の短冊状フィルムとを有し、
    前記ガスケット本体および前記短冊状フィルムは、互いに粘着した状態とされることにより前記ガスケット本体から前記短冊状フィルムを取り外し可能とされていることを特徴とするガスケット。     A planar gasket body made of a rubber-like elastic body, and a resin strip-like film disposed on the periphery of the gasket body;
    The gasket main body and the strip-shaped film are made to be in a state of being adhered to each other so that the strip-shaped film can be removed from the gasket main body.
  2. 　請求項１記載のガスケットにおいて、
    前記ガスケット本体は、平面長方形を呈し、
    前記長方形における対向２辺にそれぞれ前記短冊状フィルムが配置されていることを特徴とするガスケット。     The gasket according to claim 1,
    The gasket body has a flat rectangular shape,
    The gasket, wherein the strip-like film is disposed on two opposite sides of the rectangle.
  3. 　請求項２記載のガスケットにおいて、
    前記短冊状フィルムはその長手方向に複数の短冊状フィルムが連続することにより１本の帯状フィルムとされ、
    互いに平行に配置した２本の前記帯状フィルムの間に前記ガスケット本体が複数配置されていることを特徴とするガスケット。     The gasket according to claim 2,
    The strip-shaped film is formed as one strip-shaped film by a plurality of strip-shaped films continuing in the longitudinal direction,
    A gasket, wherein a plurality of the gasket main bodies are arranged between two strip films arranged in parallel to each other.
  4. 　請求項３記載のガスケットにおいて、
    前記２本の帯状フィルムおよび前記複数のガスケット本体よりなるガスケットが離型紙と共にロール状に巻回されていることを特徴とするガスケット。     The gasket according to claim 3,
    A gasket comprising the two strip-shaped films and the plurality of gasket bodies wound in a roll shape together with a release paper.
  5. 　請求項１または２記載のガスケットを装着箇所に装着する方法であって、
    前記ガスケット本体を装着箇所に取り付ける工程と、
    前記装着箇所に取り付けた前記ガスケット本体から前記短冊状フィルムを取り外す工程とを順次実施することを特徴とするガスケットの装着方法。     A method of mounting the gasket according to claim 1 or 2 on a mounting location,
    Attaching the gasket body to a mounting location;
    A gasket mounting method comprising sequentially performing a step of removing the strip-shaped film from the gasket body attached to the mounting location.
PCT/JP2017/033500 2016-09-27 2017-09-15 Gasket and installation method therefor WO2018061831A1 (en)

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Citations (9)

* Cited by examiner, † Cited by third party
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US20030047885A1 (en) * 2000-05-12 2003-03-13 Aviation Device & Electronic Components, L.L.C. Gasket and gasket tape and method of making and using the same
JP2005026127A (en) * 2003-07-04 2005-01-27 Nok Corp Fuel cell gasket member and mounting method of the same
JP3117147U (en) * 2005-09-29 2006-01-05 日本ジッパーチュービング株式会社 Separated release film for electromagnetic shielding material
JP2006022900A (en) * 2004-07-08 2006-01-26 Nhk Spring Co Ltd Gasket material, manufacturing method of gasket material, and mounting method of gasket
JP2009127798A (en) * 2007-11-27 2009-06-11 Nhk Spring Co Ltd Base material integrated temporarily fastening seal material, and product having seal site
JP2010112401A (en) * 2008-11-04 2010-05-20 Nok Corp Gasket
JP2011037208A (en) * 2009-08-17 2011-02-24 Inoac Corp Method for manufacturing laminate and laminate manufactured by this method
JP2011238364A (en) * 2010-05-06 2011-11-24 Uchiyama Manufacturing Corp Gasket for fuel cell and sealing structure of fuel cell
JP2012233502A (en) * 2011-04-28 2012-11-29 Nok Corp Gasket

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030047885A1 (en) * 2000-05-12 2003-03-13 Aviation Device & Electronic Components, L.L.C. Gasket and gasket tape and method of making and using the same
JP2005026127A (en) * 2003-07-04 2005-01-27 Nok Corp Fuel cell gasket member and mounting method of the same
JP2006022900A (en) * 2004-07-08 2006-01-26 Nhk Spring Co Ltd Gasket material, manufacturing method of gasket material, and mounting method of gasket
JP3117147U (en) * 2005-09-29 2006-01-05 日本ジッパーチュービング株式会社 Separated release film for electromagnetic shielding material
JP2009127798A (en) * 2007-11-27 2009-06-11 Nhk Spring Co Ltd Base material integrated temporarily fastening seal material, and product having seal site
JP2010112401A (en) * 2008-11-04 2010-05-20 Nok Corp Gasket
JP2011037208A (en) * 2009-08-17 2011-02-24 Inoac Corp Method for manufacturing laminate and laminate manufactured by this method
JP2011238364A (en) * 2010-05-06 2011-11-24 Uchiyama Manufacturing Corp Gasket for fuel cell and sealing structure of fuel cell
JP2012233502A (en) * 2011-04-28 2012-11-29 Nok Corp Gasket

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