WO2017002580A1 - ガスケットの製造方法 - Google Patents
ガスケットの製造方法 Download PDFInfo
- Publication number
- WO2017002580A1 WO2017002580A1 PCT/JP2016/067319 JP2016067319W WO2017002580A1 WO 2017002580 A1 WO2017002580 A1 WO 2017002580A1 JP 2016067319 W JP2016067319 W JP 2016067319W WO 2017002580 A1 WO2017002580 A1 WO 2017002580A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- molding
- gasket
- substrate
- coating layer
- jig
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
-
- 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
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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
- 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
-
- 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
- F16J15/14—Sealings between relatively-stationary surfaces by means of granular or plastic material, or fluid
Definitions
- the present invention relates to a method of manufacturing a gasket by curing a coating layer of a liquid molding material applied to the upper surface of a plate by a dispenser.
- a substrate-integrated gasket 10 in which a gasket 2 made of a rubber-like elastic body (rubber material or synthetic resin material having rubber-like elasticity) is integrally formed on the upper surface of a substrate 1.
- a substrate such as a separator that is a component of the fuel cell is used.
- a substrate-integrated gasket in which a gasket made of a rubber-like elastic body is integrally formed on the upper surface is used.
- the liquid rubber applied using the dispenser has a dripping shape (curved raised shape) at the rising edge from the upper surface of the substrate 1 due to wettability and surface tension. Therefore, the liquid rubber is crosslinked in this shape.
- the gasket 2 obtained by curing has portions 2 a that are insufficient in height on both sides in the width direction, and the cross-sectional shape and height accuracy become unstable. There are concerns that there is a concern that the cross-sectional shape is limited.
- the manufacturing method of the gasket according to the invention of claim 1 includes a step of applying a liquid molding material on the upper surface of the plate by a dispenser to form an application layer extending endlessly in a predetermined pattern, and the application layer on the lower surface.
- a forming jig having a forming groove extending endlessly in a predetermined pattern is overlaid on the plate body, the cross-sectional shape of the coating layer is corrected to a cross-sectional shape corresponding to the forming groove, and the coating layer is cured.
- the process of making it comprise.
- the coating layer of the liquid molding material applied in a predetermined pattern on the upper surface of the plate by the dispenser corresponds to the cross-sectional shape of the molding groove on the lower surface by the molding jig superimposed on the plate.
- the cross-sectional shape is corrected, and in this state, the coating layer is cured to form a gasket, so that a highly accurate cross-sectional shape gasket is formed.
- the manufacturing method of the gasket according to the invention of claim 2 is the method according to claim 1, wherein the liquid molding material is made of an ultraviolet-curing liquid rubber, the molding jig is made of a transparent plate, and the curing of the coating layer is the molding process. It is made by irradiating the coating layer with ultraviolet rays through a tool.
- the gasket manufacturing method according to the invention of claim 3 is the method according to claim 1 or 2, wherein the molding jig has a burr groove capable of forming a burr by a liquid molding material extruded from the molding groove. It is a feature.
- the liquid molding material protruding from the molding groove of the molding jig is held in the burr groove, and becomes a burr by hardening of the liquid molding material, This burr can be separated and removed from the gasket.
- a gasket manufacturing method according to the third aspect, wherein the burr groove forms a burr at a position away from the bonding portion between the plate body and the liquid molding material.
- the burr due to the liquid molding material that protrudes from the molding groove of the molding jig is formed at a position away from the bonding portion between the plate body and the liquid molding material. Further, it is possible to effectively prevent peeling of the plate body and the gasket.
- the gasket manufacturing method of the present invention since the accuracy of the cross-sectional shape and height of the coating layer of the liquid molding material by the dispenser is improved, a gasket having stable sealing properties can be obtained.
- the first embodiment first, as shown in FIG. 1, for example, a planar shape of the gasket 2 shown in FIG. 16A using a dispenser (not shown) on the upper surface 1 a of the substrate 1 made of a metal plate.
- the coating layer 20 is formed by applying a thermosetting liquid rubber endlessly in a predetermined pattern corresponding to the above.
- an adhesive is applied to the upper surface 1 a of the substrate 1 in advance.
- the substrate 1 corresponds to the plate described in claim 1
- the liquid rubber corresponds to the liquid molding material described in claim 1.
- the coating layer 20 has a width w1 slightly larger than the width of the gasket to be molded, and a height h1 slightly higher than the height of the gasket to be molded.
- the coating layer 20 applied by the dispenser has a dripping shape (curved surface) due to wettability and surface tension of the liquid rubber with respect to the top surface 1a of the substrate 1 at both ends in the width direction, that is, the rising end portion 20a from the top surface 1a of the substrate 1. Shaped ridges).
- the forming jig 3 is positioned and overlapped on the substrate 1 on which the coating layer 20 is formed.
- the forming jig 3 is made of a material having good thermal conductivity, and has a forming groove 31 extending on a lower surface 3a thereof in a predetermined pattern corresponding to the planar shape of the coating layer 20, and the forming groove 31 has a bottom surface 31a.
- the inner surfaces 31b on both sides in the width direction are flat and formed perpendicular to the bottom surface 31a of the molding groove 31 and the lower surface 3a of the molding jig 3, and the width w2 is equal to the width of the gasket to be molded, that is, w2 ⁇ w1.
- the depth d is equal to the height of the gasket to be molded, that is, d ⁇ h1.
- the forming jig 3 has a required number of pieces extending from the forming groove 31 so that air does not remain in the forming groove 31 when it is stacked on the substrate 1 and no air pool is formed. An air vent hole (not shown) is formed.
- the molding jig 3 is overlapped so that the lower surface 3a thereof is in close contact with the upper surface 1a of the substrate 1, the coating layer 20 on the substrate 1 is filled in the molding groove 31 as shown in FIG. That is, the cross-sectional shape thereof is corrected to a shape following the bottom surface 31a and both inner side surfaces 31b of the forming groove 31.
- the substrate 1 on which the forming jig 3 is stacked is sent to a thermostat (not shown) and heated in the thermostat at a predetermined temperature for a predetermined time, whereby the coating layer 20 made of thermosetting liquid rubber is formed. Crosslink and cure.
- the coating layer 20 is molded as a gasket 2 by curing and is integrally bonded to the upper surface 1 a of the substrate 1.
- the molding jig 3 and the substrate 1 are opened so as to be separated, whereby the gasket 2 made of a rubber-like elastic body is integrally formed on the upper surface 1a of the substrate 1 as shown in FIG.
- the substrate integrated gasket 10 is taken out.
- the upper surface 2b is formed flat by the bottom surface 31a of the molding groove 31 of the molding jig 3 and the both side surfaces 2c are formed of the molding jig 3 in the curing process of the coating layer 20 described above. Since it is formed on a vertical rising surface by the both inner side surfaces 31b of the molding groove 31, it has a highly accurate cross-sectional shape, and thus can exhibit stable performance.
- FIG. 5 shows a second preferred embodiment of the gasket manufacturing method according to the present invention, wherein the forming jig 3 is made of a transparent material, such as glass, and is applied to the upper surface 1a of the substrate 1 by a dispenser (not shown).
- a dispenser not shown
- the process of hardening the formed coating layer 20 made of ultraviolet curable liquid rubber by irradiation of ultraviolet rays UV is shown.
- an ultraviolet curable liquid rubber is used as a liquid molding material applied to the upper surface 1a of the substrate 1 by a dispenser.
- a molding jig 3 is overlaid on the substrate 1 on which the coating layer 20 made of ultraviolet curable liquid rubber is formed so that the lower surface 3a thereof is in close contact with the upper surface 1a of the substrate 1. 3, when the coating layer 20 on the substrate 1 is filled in the molding groove 31 and the cross-sectional shape thereof is corrected to a shape following the bottom surface 31 a and both inner side surfaces 31 b of the molding groove 31.
- ultraviolet rays UV are irradiated from above the forming jig 3 by an ultraviolet irradiation device (not shown).
- the ultraviolet rays UV are transmitted through the transparent molding jig 3, and the energy is used to cure the coating layer 20 made of ultraviolet curable liquid rubber. For this reason, it is not necessary to put in a thermostat, and the gasket 2 can be formed by curing the coating layer 20 in a short time (for example, several tens of seconds).
- the coating layer 20 is cross-linked and cured by irradiation with ultraviolet rays UV and the gasket 2 is formed, as shown in FIG. 4, the forming jig 3 and the substrate 1 are opened so as to be separated from each other, as shown in FIG.
- a substrate integrated gasket 10 in which a gasket 2 made of a rubber-like elastic body is integrally formed on the upper surface 1a of the substrate 1 can be taken out.
- the forming jig 3 when the forming jig 3 is stacked on the substrate 1 on which the coating layer 20 is formed as shown in FIG. 2, the forming jig 3 is formed as shown in FIG.
- the cured product becomes a thin burr, and this thin burr There is a possibility that the removal work of the process becomes complicated.
- a region that is an adhesive portion with the gasket on the upper surface 1a of the substrate 1 in other words, a region that faces the molding groove 31 of the molding jig 3 (a region that is hatched in FIG. 7).
- a coating layer 20 made of liquid rubber is formed on the upper surface 1a of the substrate 1 by a dispenser as shown in FIG.
- the coating layer 20 has a width w1 larger than the width of the gasket to be molded and a height h1 higher than the height of the gasket to be molded.
- the forming jig 3 is overlaid on the substrate 1 so that the lower surface 3 a thereof is in close contact with the upper surface 1 a of the substrate 1, whereby the coating layer 20 on the substrate 1 is formed into the forming groove 31.
- the state is filled with.
- a part 20 b of the coating layer 20 (liquid rubber) in the molding groove 31 of the molding jig 3 is pushed out to both sides in the width direction, and the molding jig 3 is passed through the gap between the razor portion 33 and the upper surface 1 a of the substrate 1.
- thermosetting liquid rubber is used as the liquid molding material
- the substrate 1 on which the molding jig 3 is stacked is sent to a thermostat (not shown) and heated at a predetermined temperature in the thermostat for a predetermined time.
- the coating layer on the substrate 1 is irradiated by irradiating the molding jig 3 with ultraviolet rays. 20 (liquid rubber) is crosslinked and cured.
- the molding jig 3 and the substrate 1 are opened so as to be separated.
- the gasket 2 formed by hardening the liquid rubber in the forming groove 31 of the forming jig 3 and bonded integrally by the bonding portion 40, and the burrs are formed.
- the burrs 21, which are a cured product of liquid rubber in the groove 32, are connected to each other via a thin connecting portion 22 formed by a razor portion 33.
- the burr 21 is not bonded to the upper surface 1a of the substrate 1, it can be easily removed from the gasket 2 while being torn off by the connecting portion 22, and the rubber is applied to the upper surface of the substrate 1 as shown in FIG. It is possible to obtain a substrate-integrated gasket 10 in which the gasket 2 made of an elastic body is integrally formed.
- a flat gasket having a flat upper surface is formed as the gasket 2.
- the cross-sectional shape of the forming groove 31 of the forming jig 3 for example, as shown in FIG. As shown in FIG. 9B, the one having the kamaboko shaped raised seal bead 2d, the one having the raised V shaped seal bead 2e as shown in FIG. ), Gaskets having various cross-sectional shapes such as those having a plurality of seal beads 2f can be formed. Therefore, since a gasket having a complicated shape can be formed only by changing the processing shape of the forming groove 31 of the forming jig 3, it is possible to respond to a request for a specification change at a low cost.
- a substrate-integrated gasket 10 in which a gasket 2 made of a rubber-like elastic body is integrally formed on the upper surface 1a of the substrate 1, as shown in FIG.
- the present invention can also be applied to the case where a rubber-only gasket is formed by applying a material having no self-adhesive property to the liquid molding material without applying an adhesive to the upper surface 1a of the substrate 1.
- the burr 21 is torn off at the thin connecting portion 22.
- the tearing position (connecting portion 22) is along the bonding portion 40 between the upper surface 1 a of the substrate 1 and the gasket 2, so that the stress concentrated on the connecting portion 22 is pulled by pulling the burr 21. It acts directly on the bonding portion 40 as a peeling force.
- the fourth embodiment of the gasket manufacturing method according to the present invention effectively suppresses the peeling force acting on the bonding portion 40 between the gasket 2 and the substrate 1 when the burr 21 is removed.
- a plurality of forming jigs first forming jig 3A and second forming jig 3B are used.
- the first forming jig 3A has a lower surface 3a that can be in close contact with the upper surface 1a of the substrate 1, and an inner peripheral surface 3b that has a shape that defines the outer peripheral shape of the gasket to be formed.
- the upper surface 3c has a burr groove 32 having an appropriate depth and a beveled portion 33 which is a relative convex portion between the burr groove 32 and the inner peripheral surface 3b.
- the second molding jig 3B has a molding projection 34 formed such that the lower surface 3d can be in close contact with the upper surface 1a of the substrate 1 and the outer peripheral surface 3e defines the inner peripheral shape of the gasket to be molded.
- the outer peripheral side lower surface 3f of the molding protrusion 34 can be in close contact with the upper surface 3c of the first molding jig 3A.
- the first molding jig 3A and the second molding jig 3B are positioned and overlapped on the substrate 1, whereby the inner circumferential surface 3b of the first molding jig 3A and the second molding jig 3A are aligned.
- the outer peripheral surface 3e and the outer peripheral side lower surface 3f of the molding projection 34 of the tool 3B constitute a molding groove 31 corresponding to the planar shape and the cross-sectional shape of the gasket to be molded.
- a gasket molding space C is defined between the first molding jig 3A and the burr groove 32 and the razor portion 33 formed on the upper surface 3c of the first molding jig 3A, and the outer peripheral side lower surface 3f of the second molding jig 3B.
- the burr forming space D is continuous with the gasket forming space C and is separated from the upper surface 1a of the substrate 1 (the bonding portion 40 between the substrate 1 and the gasket 2 shown in FIG. 12).
- the first molding jig 3A is positioned and superimposed on the upper surface 1a of the substrate 1, and then the substrate 1 is used by using a dispenser (not shown).
- An endless coating layer 20 is formed by coating liquid rubber along the inner circumferential side of the inner circumferential surface 3b of the first molding jig 3A in the upper surface 1a of the first molding jig 3A.
- the adhesive 4 is applied in advance to the region of the upper surface 1a of the substrate 1 where the coating layer 20 is to be applied.
- the height h1 of the coating layer 20 of the liquid rubber is higher than the height of the gasket to be molded, and the volume of the coating layer 20 of the liquid rubber is applied to the substrate 1 on the first molding jig 3A and the second molding jig 3B.
- the second molding jig 3B is positioned and superimposed on the substrate 1 and the first molding jig 3A.
- the coating layer 20 has a height h1 higher than the height of the gasket to be molded and a volume larger than the volume of the molding space C formed by the first molding jig 3A and the second molding jig 3B.
- a part 20b of the coating layer 20 (liquid rubber) in the gasket molding space C becomes the outer periphery of the razor portion 33 of the first molding jig 3A and the second molding jig 3B. It is pushed out through the gap with the side lower surface 3f and flows into the burr forming space D between the burr groove 32 of the first forming jig 3A and the outer peripheral side lower surface 3f of the second forming jig 3B.
- thermosetting liquid rubber is used as the liquid molding material
- the substrate 1 on which the first molding jig 3A and the second molding jig 3B are overlapped is sent to a thermostat (not shown).
- the first molding jig 3A and the second molding jig 3B are made of a transparent material while being heated at a predetermined temperature for a predetermined time, or using an ultraviolet curable liquid rubber as a liquid molding material
- the coating layer 20 (liquid rubber) on the substrate 1 is crosslinked and cured by irradiating ultraviolet rays UV from above the first molding jig 3A and the second molding jig 3B.
- the gasket 2 integrally bonded to the upper surface 1a of the substrate 1 is formed in the gasket forming space C via the bonding portion 40, and the thin connecting portion 22 by the razor portion 33 is formed in the burr forming space D.
- a burr 21 continuous with the gasket 2 is formed.
- the second forming jig 3B is opened so as to be separated from the substrate 1, and as shown in FIG. 15, held in the burr groove 32 of the first forming jig 3A in a non-adhesive manner.
- the burr 21 is removed by tearing at the connecting portion 22 on the razor portion 33.
- the burr 21 and the connecting part 22 are located away from the adhesive part 40 between the gasket 2 and the upper surface 1 a of the substrate 1, when the burr 21 is torn off and removed from the gasket 2, the breaking at the connecting part 22 occurs.
- the stress at this time is less likely to act as the peeling force of the bonding portion 40, and therefore the peeling of the gasket 2 from the substrate 1 can be effectively prevented.
- the substrate integrated gasket 10 in which the gasket 2 made of a rubber-like elastic body is integrally formed on the upper surface 1a of the substrate 1.
- the cross-sectional shape of the molding groove 31 formed by the inner peripheral surface 3b of the first molding jig 3A, the outer peripheral surface 3e of the molding projection 34 of the second molding jig 3B, and the outer peripheral side lower surface 3f is also determined.
- the gasket 2 having various cross-sectional shapes as shown in FIGS. 9A to 9C described above can be formed. Therefore, a gasket having a complicated shape can be formed only by changing the processing shape of the inner peripheral surface 3b of the first forming jig 3A and the outer peripheral surface 3e and the outer peripheral side lower surface 3f of the forming protrusion 34 of the second forming jig 3B. It is possible to respond to the specification change request at a low cost.
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Abstract
Description
すなわち請求項1の発明に係るガスケットの製造方法は、板体の上面にディスペンサによって液状成形材料を塗布して所定のパターンで無端状に延びる塗布層を形成する工程と、下面に前記塗布層と対応する所定のパターンで無端状に延びる成形溝を有する成形治具を前記板体の上に重ね、前記塗布層の断面形状を前記成形溝と対応する断面形状に補正してこの塗布層を硬化させる工程と、からなることを特徴とするものである。
すなわち請求項2の発明に係るガスケットの製造方法は、請求項1の記載において、液状成形材料が紫外線硬化型液状ゴムからなり、成形治具が透明板からなり、塗布層の硬化が前記成形治具を介して前記塗布層に紫外線を照射することによりなされることを特徴とするものである。
2 ガスケット
20 塗布層
3 成形治具
3A 第一成形治具
3B 第二成形治具
31 成形溝
32 バリ溝
33 カミキリ部
40 接着部
Claims (4)
- 板体の上面にディスペンサによって液状成形材料を塗布して所定のパターンで無端状に延びる塗布層を形成する工程と、下面に前記塗布層と対応する所定のパターンで無端状に延びる成形溝を有する成形治具を前記板体の上に重ね、前記塗布層の断面形状を前記成形溝と対応する断面形状に補正してこの塗布層を硬化させる工程と、からなることを特徴とするガスケットの製造方法。
- 液状成形材料が紫外線硬化型液状ゴムからなり、成形治具が透明板からなり、塗布層の硬化が前記成形治具を介して前記塗布層に紫外線を照射することによりなされることを特徴とする請求項1に記載のガスケットの製造方法。
- 成形治具が、成形溝内から押し出される液状成形材料によるバリを形成可能なバリ溝を有することを特徴とする請求項1又は2に記載のガスケットの製造方法。
- バリ溝が、板体と液状成形材料との接着部から離れた位置にバリを形成するものであることを特徴とする請求項3に記載のガスケットの製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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US15/739,120 US10960599B2 (en) | 2015-06-29 | 2016-06-10 | Method of manufacturing gasket |
CN201680035634.8A CN107709848B (zh) | 2015-06-29 | 2016-06-10 | 垫片的制造方法 |
EP16817689.9A EP3315827B1 (en) | 2015-06-29 | 2016-06-10 | Process for production of gaskets |
KR1020177037779A KR102429966B1 (ko) | 2015-06-29 | 2016-06-10 | 개스킷의 제조방법 |
CA2990143A CA2990143C (en) | 2015-06-29 | 2016-06-10 | Process for production of gaskets |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2015129818 | 2015-06-29 | ||
JP2015-129818 | 2015-06-29 | ||
JP2015215518A JP6600230B2 (ja) | 2015-06-29 | 2015-11-02 | ガスケットの製造方法 |
JP2015-215518 | 2015-11-02 |
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WO2017002580A1 true WO2017002580A1 (ja) | 2017-01-05 |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2006038013A (ja) * | 2004-07-23 | 2006-02-09 | Nok Corp | ガスケット製造方法 |
JP2008168448A (ja) * | 2007-01-09 | 2008-07-24 | Nok Corp | シール部品の製造方法 |
JP2010190237A (ja) * | 2009-02-16 | 2010-09-02 | Uchiyama Manufacturing Corp | ガスケット構造体及びその製造方法 |
JP2014211185A (ja) * | 2013-04-18 | 2014-11-13 | Nok株式会社 | カーボンプレート一体ガスケットの製造方法 |
-
2016
- 2016-06-10 WO PCT/JP2016/067319 patent/WO2017002580A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2006038013A (ja) * | 2004-07-23 | 2006-02-09 | Nok Corp | ガスケット製造方法 |
JP2008168448A (ja) * | 2007-01-09 | 2008-07-24 | Nok Corp | シール部品の製造方法 |
JP2010190237A (ja) * | 2009-02-16 | 2010-09-02 | Uchiyama Manufacturing Corp | ガスケット構造体及びその製造方法 |
JP2014211185A (ja) * | 2013-04-18 | 2014-11-13 | Nok株式会社 | カーボンプレート一体ガスケットの製造方法 |
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