WO2012029444A1 - ガスケット成形品の製造方法 - Google Patents
ガスケット成形品の製造方法 Download PDFInfo
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- WO2012029444A1 WO2012029444A1 PCT/JP2011/066887 JP2011066887W WO2012029444A1 WO 2012029444 A1 WO2012029444 A1 WO 2012029444A1 JP 2011066887 W JP2011066887 W JP 2011066887W WO 2012029444 A1 WO2012029444 A1 WO 2012029444A1
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- gasket
- rubber
- manufacturing
- molded product
- substrate
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- 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
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/48—Preparation of the surfaces
- B29C63/481—Preparation of the surfaces mechanically
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- 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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/02—Deburring or deflashing
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
- B29C45/0055—Shaping
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
- B29C45/14344—Moulding in or through a hole in the article, e.g. outsert moulding
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- 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
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- 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
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
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- 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
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
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- 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
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0276—Sealing means characterised by their form
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- 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
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0286—Processes for forming seals
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
- B29C45/0055—Shaping
- B29C2045/0058—Shaping removing material
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
- B29C2045/0077—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping removing burrs or flashes
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
- B29C2045/14459—Coating a portion of the article, e.g. the edge of the article injecting seal elements
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C2045/1486—Details, accessories and auxiliary operations
- B29C2045/14967—Injecting through an opening of the insert
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
- B29L2031/265—Packings, Gaskets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3468—Batteries, accumulators or fuel cells
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- 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
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a gasket molded product related to a sealing technique, and more particularly to a manufacturing method thereof.
- GDL gas diffusion layer
- GDL integrated seal gasket molded product having a structure in which a gasket body made of a rubber-like elastic body is integrally formed with this GDL by injection molding.
- MPL microporous layer
- FIGS. 13A and 13B show an example of this type of prior art, in which a GDL 11 as a substrate is provided, and an MPL layer 12 as a surface treatment layer is provided on one surface 11 a in the thickness direction of the GDL 11.
- a gasket main body 13 made of a rubber-like elastic body is integrally formed as a lip shape on the other surface 11b in the thickness direction of the GDL 11.
- the GDL 11 provided with the MPL layer 12 is usually provided as shown in FIG.
- the one surface 11a in the thickness direction is aligned downward.
- the reason why the other surface 11b in the thickness direction of the GDL 11 integrally molded with the gasket main body 13 made of the rubber-like elastic body on the opposite side is not arranged downward is that foreign matter adheres to the gasket main body 13 from the base 31 or is contaminated. This is to prevent the transfer of the pattern to rubber (for example, transfer of the mesh pattern to rubber in the case of a net shelf).
- a resin protective sheet 32 is laid on a placing table 31 as shown in the figure, and molded products are arranged on the sheet 32.
- the protective sheet 32 is required to be non-charging (dust prevention), non-staining and heat resistant (during the secondary vulcanization process), and a very expensive material needs to be selected.
- periodic cleaning and replacement are also required, leading to a cost increase due to a decrease in yield.
- the present invention manufactures a gasket molded product in which a surface treatment layer is provided on one surface in the thickness direction of a substrate and a gasket body made of a rubber-like elastic body is integrally formed on the other surface in the thickness direction.
- a method for manufacturing a gasket molded product according to claim 1 of the present invention is a gasket body comprising a surface treatment layer on one surface in the thickness direction of a substrate and a rubber-like elastic body on the other surface in the thickness direction.
- a gasket molded product obtained by integrally molding the gasket body, wherein a first step of integrally molding the gasket main body on the substrate provided with the surface treatment layer, and a molded product that has undergone the first step are placed.
- a method for manufacturing a gasket molded product in which a second step of temporarily placing on a table and a third step of punching out a molded product that has undergone the second step and removing a peripheral burr from the product are sequentially performed.
- a projecting leg portion made of a rubber-like elastic body is integrally formed at a position corresponding to the burr portion in the molded product, and the molded product is held by the leg portion in the second step. It is brought into contact with the cradle, when the third step, wherein the excising the legs as part of the burr portion.
- a method for manufacturing a gasket molded product according to the second aspect further comprising: a rubber-impregnated portion that impregnates the porous structure of the substrate with the leg portion and the gasket body. It is characterized in that it is integrally formed through the.
- a method for manufacturing a gasket molded product according to the first aspect wherein the leg is provided with the surface treatment layer on the substrate opposite to the gasket body. It is characterized by being integrally formed on one surface in the direction.
- a method for producing a gasket molded article according to the fourth aspect of the present invention wherein the rubber-impregnated portion impregnates the porous structure of the substrate with the leg portion and the gasket body. And it forms integrally through the rubber filling part with which the through hole provided in the said surface treatment layer is filled.
- a gasket molded article manufacturing method according to claim 6 of the present invention is the manufacturing method according to claim 4 described above, wherein the leg portion and the gasket body are impregnated into a porous structure provided in the substrate, And it forms integrally through the rubber impregnation part which impregnates the porous structure with which the said surface treatment layer is provided.
- a seventh aspect of the present invention there is provided a method for producing a gasket molded article according to the first aspect, wherein the surface treatment layer is covered with a protective film to protect the surface treatment layer.
- the first to third steps are sequentially performed.
- the manufacturing method of a gasket molded product according to claim 9 of the present invention is the manufacturing method according to claim 7, wherein the leg is provided with the surface treatment layer on the substrate opposite to the gasket body.
- a rubber-impregnated portion that is integrally formed on one surface in the direction, and the leg portion and the gasket body are impregnated into a porous structure provided in the substrate, a rubber-filled portion that is filled in a through-hole provided in the surface treatment layer, and It is integrally formed through a rubber filling portion filled in a through hole provided in the protective film.
- a method for manufacturing a gasket molded product according to claim 10 of the present invention is that in the manufacturing method according to any one of claims 7 to 9, there is a difference in thermal expansion coefficient between the protective film and the substrate.
- the protective film is configured to be constrained by only a part of the leg part, not the whole part, so as not to bend at the time of thermal expansion.
- the manufacturing method of a gasket molded product according to claim 11 of the present invention is the manufacturing method according to any one of claims 1 to 10, wherein the substrate is GDL in a fuel cell, and the surface treatment layer is formed. Is an MPL layer.
- a gasket molded product is obtained by providing a surface treatment layer on one surface in the thickness direction of the substrate and integrally molding a gasket body made of a rubber-like elastic body on the other surface in the thickness direction.
- a first step of integrally molding a gasket body on a substrate provided with a surface treatment layer a second step of temporarily placing a molded product that has undergone the first step on a placing table, and this second step
- the third step of punching the molded product that has undergone the process and cutting away the peripheral burr from the product portion is sequentially performed.
- the rubber-like elastic body is placed at a position corresponding to the burr portion in the molded product.
- the projecting leg portion is integrally molded, and the molded product is brought into contact with the placing table with the leg portion in the second step. Accordingly, in the second step, the molded product comes into contact with the pedestal with the legs and is supported by the pedestal, and the surface treatment layer is separated from the cradle and does not contact the cradle. Inconveniences such as adhesion of foreign matter, contamination, and scratches due to contact with the surface are less likely to occur.
- the leg portion is used in the second step at the time of manufacturing the molded article as described above and is not necessary as a product, it is cut out from the product portion as a part of the burr portion in the third step.
- Substrates include various types of plates and relatively soft films.
- the present invention is intended for a gasket molded product in which a surface treatment layer is provided on one surface in the thickness direction of the substrate and a gasket body is integrally formed on the other surface in the thickness direction.
- a pattern mode
- a surface treatment layer on the substrate is formed opposite to the gasket body.
- the leg part contacts the base during temporary placement so that the gasket main body does not contact the base.
- the leg portion is molded with a height dimension larger than that of the gasket body. Therefore, even if the leg portion and the gasket main body are integrally formed on the same surface of the substrate, it is possible to suppress the gasket main body from coming into contact with the placing table.
- the leg portion and the gasket main body may be molded separately from each other, but when the substrate has a porous structure, it may be molded integrally through a rubber-impregnated portion that impregnates the porous structure. Thus, if the molding is performed integrally, the rubber molding process can be completed at once.
- the surface treatment layer is provided between the leg part and the gasket body in addition to the substrate. Therefore, when both are integrally molded through a rubber-impregnated portion impregnated in the porous structure of the substrate and a rubber-filled portion filled in a through hole provided in the surface treatment layer, the rubber molding step is performed as described above. You can do it all at once.
- the surface treatment layer has a porous structure similar to the substrate
- the two are integrated via a rubber impregnation portion that impregnates the porous structure provided in the substrate and a rubber impregnation portion that impregnates the porous structure provided in the surface treatment layer.
- the rubber molding process can be completed once.
- the surface treatment layer can be protected from foreign matter adhesion, contamination, scratches, etc.
- the surface treatment layer can be more effectively protected from adhesion of foreign matters, contamination, scratches, and the like.
- the rubber impregnation portion impregnating the porous structure provided in the substrate, the rubber impregnation portion impregnated in the porous structure provided in the surface treatment layer, and the protective film If it is integrally molded through the rubber filling portion filled in the provided through hole, the rubber molding process can be completed in one time.
- the protective film is removed together with the burr portion in the third step.
- the leg portion since the leg portion is provided so that the surface treatment layer does not contact the pedestal, the leg portion is provided so that the entire molded product can be supported by the leg portion. If the structure is such that the protective film is constrained on a flat surface, the molded product may bend during thermal expansion in view of the difference in thermal expansion coefficient between the protective film and the substrate. Therefore, the leg portion has a structure in which the protective film is constrained on a plane by only a part rather than all of the leg portion, thereby escaping the difference in thermal expansion and suppressing the occurrence of bending.
- the gasket molded product to be manufactured by the present invention is not particularly limited in use, but is suitable for use as a fuel cell component.
- the substrate is, for example, a GDL in a fuel cell
- the surface treatment layer is an MPL layer.
- the present invention has the following effects.
- the surface treatment layer does not come into contact with the placement table, and foreign matter due to contact
- the surface treatment layer can be effectively protected from adhesion, contamination, and scratches.
- a surface treatment layer can be protected still more effectively.
- the gasket body made of rubber-like elastic body is molded integrally with the rubber-like elastic body, the rubber molding process can be completed once, and the protective film is not part of the whole leg part.
- the gasket molded article according to the present invention is a fuel cell component, the above-described effects can be obtained in the field related to the fuel cell component.
- FIG. 1 (A) is a top view of a molded article
- FIG.1 (B) is a longitudinal cross-sectional view of the molded article
- FIG. 1 (A) is a top view of a molded article
- FIG.1 (B) is a longitudinal cross-sectional view of the molded article
- FIG. 1 (A) is a top view of a molded article
- FIG.1 (B) is a longitudinal cross-sectional view of the molded article
- FIG. 1 (B) is a longitudinal cross-sectional view of the molded article
- FIG. 4 (A) is a top view of a molded article
- FIG.4 (B) is a longitudinal cross-sectional view of the molded article
- FIG. 7 (A) is a top view of a molded article
- FIG.7 (B) is a longitudinal cross-sectional view of the molded article
- FIG. 8A is a plan view of a molded product
- FIG. 8A is a plan view of a molded product
- FIG. 8B is a longitudinal sectional view of the molded product according to a fourth embodiment of the present invention.
- FIG. 9 (A) is a top view of a molded article
- FIG.9 (B) is a longitudinal cross-sectional view of the molded article
- FIG. 10A is an explanatory view of a manufacturing method according to the embodiment
- FIG. 10A is an explanatory view of a first step
- FIG. 10B is a longitudinal sectional view showing a state in which bending occurs.
- FIG. 10A is an explanatory view of a manufacturing method according to the embodiment
- FIG. 10A is an explanatory view of a first step
- FIG. 10B is a longitudinal sectional view showing a state in which bending occurs.
- FIG. 11 (A) is a top view of a molded article
- FIG.11 (B) is a longitudinal cross-sectional view of the molded article
- FIG. 13 (A) is a top view of a molded article
- FIG.13 (B) is a longitudinal cross-sectional view of the molded article
- FIG. 13 (B) is a longitudinal cross-sectional view of the molded article
- the present invention includes the following embodiments.
- the present invention relates to a method for manufacturing a GDL integrated seal or a film integrated seal that requires a punching process into a product shape. Further, the present invention aims to protect a lip and a member to be integrated, and forms a rubber protrusion for a base, and can be implemented not only by a GDL integrated seal but also by a film integrated seal. It can also be implemented in fields other than fuel cell gaskets (for example, general industrial gaskets). (1-2) A rubber protrusion having a height higher than that of the seal lip is simultaneously formed at a location not related to the product portion separately from the seal lip. By using the projecting portion as a base, it is possible to place the lip while protecting the lip without contacting the lip.
- the rubber protrusion is punched in the punching process to the product shape, there is no problem with the product sealing function. Further, as long as it functions as a base, it can be arranged at any place, and the rubber protrusion and the seal lip need not necessarily be connected by impregnation. Moreover, it can also be used as a vent for venting air by arranging it at the rubber joining point during molding. It is also possible to use rubber as a MPL protection by pouring rubber onto the back surface of the GDL (MPL treated surface) by impregnation or through holes and molding a rubber protrusion on the MPL surface. The rubber projection can also be used as a chuck for releasing from the mold after molding.
- a through hole is provided in advance at a location facing the rubber protrusion, and by injection molding, the material is poured into the rubber protrusion cavity through the through hole simultaneously with the impregnation of the rubber into the GDL.
- the MPL treatment can be integrally formed with the protective sheet covered. (2-3)
- GDL and protective sheet are formed integrally by this molding method, if there is a difference in linear expansion between GDL and protective sheet, the product after molding will have a difference in linear expansion between normal temperature and high temperature. Will occur (because both ends of the protective sheet are constrained by the rubber protrusions and follow the GDL). To solve this problem, it is necessary to select a protective sheet that has no difference in linear expansion.
- GDL is thermally shrunk by internal residual stress
- protective sheets such as resin films are thermally expanded.
- the present invention relates to a fuel cell gasket, and its main object is to protect the MPL surface of an integral gasket impregnated into GDL coated with MPL (microporous layer).
- MPL microporous layer
- Liquid rubber is impregnated and integrally molded by injection molding into GDL coated with MPL (Japanese Patent Laid-Open No. 2006-107798).
- (3-3) In the present invention, during the post-molding process (secondary vulcanization, etc.) or during storage, (3-3-1) Providing protrusions higher than the lip on the lip side to protect the lip when placing the lip side down, (3-3-2) Protect the MPL by providing a protrusion on the side coated with the MPL. It will be.
- a protrusion is provided on the side coated with MPL, and the MPL surface is further covered with a protective film to prevent contamination and the like. Will be removed. Because of the difference in thermal deformation between the protective film (assuming a resin film) and GDL, if heat is applied in the mold and both sides are fixed with rubber, bending occurs when the temperature returns to room temperature.
- the protective film is fixed only on one side. As the protective film, use a film with excellent mechanical strength and heat resistance, such as PI film and PEEK film, to prevent thermal deformation of the film in the mold due to mold clamping and molding temperature, and the thickness is several 10 ⁇ m.
- a film having no mechanical strength is selected as the protective film, depending on the MPL treatment, there may occur a problem that the MPL treatment and the protective film are fixed by the clamping pressure when the film is distorted by clamping at the time of molding. .
- the film may be thermally deformed in the mold and MPL fixation may occur, or the intended MPL protection function may not be obtained.
- a film having excellent mechanical properties and heat resistance such as a PI film and a PEEK film, may be used.
- GDL integrated seal that is a component for a fuel cell as a gasket molded product.
- This GDL integrated seal is a GDL (gas gas) having a porous structure as a substrate.
- the MPL layer 12 has a fine porous structure having a smaller porosity than the GDL 11, and for the purpose of water management in the fuel cell, etc., one surface 11a in the thickness direction of the GDL 11 It is deposited over the entire surface.
- the gasket body 13 is provided as an endless shape at the peripheral edge of the GDL 11 so as to surround the periphery of the fuel gas reaction region 14 set at the center of the other surface 11b in the thickness direction of the GDL 11, and further has a mountain shape in cross section. It is provided as a lip shape.
- the gasket body 13 is integrally formed by injection molding using a mold on the other surface 11b in the thickness direction of the GDL 11 in which the MPL layer 12 is previously provided on the one surface 11a in the thickness direction.
- the third step of excising the burr 16 (the excision is performed in the dotted line part (cut-off part C) in each figure, and the part on the inner peripheral side is the product part 15 and the part on the outer peripheral side is the burr part 16. Are carried out sequentially.
- a projecting leg 17 made of a rubber-like elastic body is integrally molded at a position corresponding to the burr 16 in the molded product.
- the molded product is brought into contact with the pedestal 31 with the legs 17 to support the molded product by the legs 17.
- FIGS. As shown by the dotted line C, the leg portion 17 is cut out from the product portion 15 as a part of the burr portion 16.
- the leg portion 17 is integrally formed on the other surface 11b in the thickness direction of the GDL 11 in the same manner as the gasket main body 13, and is integrally formed on the outer peripheral side of the gasket main body 13, and further on the four sides of the GDL 11 forming a plane quadrangle.
- Each is integrally molded as one having a predetermined length.
- the leg portion 17 is formed such that its height dimension h 1 is larger than the height dimension h 2 of the gasket body 13.
- the leg portion 17 and the gasket main body 13 are integrally formed through a rubber impregnated portion 18 that impregnates the porous structure of the GDL 11. According to the above configuration, as shown in FIG.
- the leg portion 17 is also used as a molded product chuck portion when the molded product is released from the mold 33.
- a projecting leg 17 made of a rubber-like elastic body is integrally formed at a position corresponding to the burr 16 in the molded product. Then, as shown in FIG. 5 during the second step, the molded product is brought into contact with the placing table 31 with the legs 17 to support the molded product by the legs 17, and during the third step, FIGS. As shown by the dotted line C, the leg portion 17 is cut out from the product portion 15 as a part of the burr portion 16.
- the leg 17 is integrally formed on one surface 11 a in the thickness direction (on the MPL layer 12) provided with the MPL layer 12 in the GDL 11, opposite to the gasket body 13, and on the outer peripheral side than the gasket body 13 And then integrally molded as having a predetermined length on each of the four sides of the GDL 11 having a planar quadrangle.
- the height dimension of the leg portion 17 is not particularly limited.
- the leg portion 17 and the gasket body 13 are integrally formed through a rubber impregnation portion 18 for impregnating the porous structure provided in the GDL 11 and a rubber filling portion 19 filled in a through hole 12a provided in advance in the MPL layer 12. .
- both the MPL layer 12 and the gasket main body 13 are placed on the placement base 31. Therefore, the MPL layer 12 and the gasket main body 13 can be effectively protected from foreign matter adhesion, contamination, scratches, and the like due to contact.
- the leg portion 17 is also used as a molded product chuck portion when the molded product is released from the mold 33.
- the rubber-impregnated portion 18 and the MPL layer 12 that impregnate the leg portion 17 and the gasket main body 13 into the porous structure provided in the GDL 11 are formed as shown in FIG.
- the porous structure may be integrally formed through a rubber-impregnated portion 20 that impregnates the porous structure.
- Other configurations and operational effects of the third embodiment are the same as those of the second embodiment.
- the leg portion 17 and the gasket main body 13 are integrally formed through the rubber-impregnated portions 18 and 20 and the rubber filling portion 19 in the first step.
- the leg portion 17 and the gasket main body 13 may be molded separately from each other.
- the mold structure is slightly complicated because the material flow path is a separate system for the gasket body 13 and the leg part 17, but it is possible to select different materials for the leg part 17 and the gasket body 13. .
- the leg portion 17 is integrally formed with a predetermined length on each of the four sides of the planar square GDL 11 in the first step. If the molded product can be supported by the leg portions 17 in the two steps, the number of the leg portions 17 to be arranged, the arrangement location, the shape, and the like are not particularly limited. For example, instead of providing one location for each of the four sides, a plurality of locations are provided for each of the four sides (in the plan view of FIG. 8A, two locations are provided on the upper side and three locations on the left side). Instead of being provided on the two sides, they are provided only on the two opposite sides, or in the form of dots instead of the shape having a predetermined length parallel to each side, or the dots are provided at the four corners of the plane square. Can be considered.
- the rubber-impregnated portion 18 (or 18, 20) and the leg portion 17 are communicated with a part of the passage 21 (see the lower side in the plan view of FIG. 8A) and the leg portion 17 is connected to the mold structure. It is also conceivable to use the leg 17 (the leg molding part in the mold structure) as an air vent for rubber molding by disposing it at the end of the material flow path.
- the MPL layer 12 is temporarily covered with a protective film 34 in order to protect the MPL layer 12 which is a surface treatment layer.
- the first to third steps are sequentially performed.
- a protruding leg 17 made of a rubber-like elastic body is provided at a position corresponding to the burr 16 in the molded product.
- the molded product is integrally molded, and in the second step, the molded product is brought into contact with the pedestal 31 by the leg portion 17 and supported by the leg portion 17, and the molded product is supported by the dotted line C in FIGS. 9A and 9B in the third step. As shown, the leg portion 17 is cut out from the product portion 15 as a part of the burr portion 16.
- the leg portion 17 is integrally molded on the one surface 11a (on the protective film 34) in the thickness direction provided with the MPL layer 12 and the protective film 34 in the GDL 11 in the opposite direction to the gasket main body 13. Further, it is integrally molded on the outer peripheral side, and further integrally molded with a predetermined length on each of the two opposing sides of the GDL 11 having a planar quadrangle.
- the height dimension of the leg portion 17 is not particularly limited.
- leg portion 17 and the gasket main body 13 are provided with a rubber-impregnated portion 18 for impregnating the porous structure of the GDL 11, a rubber-impregnated portion 20 for impregnating the porous structure of the MPL layer 12, and a through hole 34 a provided in advance in the protective film 34. It is integrally molded through a rubber filling portion 22 filled in the container.
- the rubber-impregnated portion 20 impregnated in the porous structure included in the MPL layer 12 may be a rubber-filled portion 19 filled in a through hole 12a provided in advance in the MPL layer 12 instead.
- the second step of temporary placement is performed in a state where the molded product is supported by the leg portion 17, neither the MPL layer 12 nor the gasket body 13 is in contact with the placement base 31, and thus is in contact.
- the MPL layer 12 and the gasket main body 13 can be effectively protected from foreign matter adhesion, contamination, scratches, etc. due to the above, and since the MPL layer 12 is protected by the protective film 34, the MPL layer 12 can be more effectively protected. Can do.
- the protective film 34 is overlaid on the MPL layer 12 but not bonded, it is removed together with the burr 16 during the third step.
- the leg portion 17 is also used as a molded product chuck portion when the molded product is released from the mold 33.
- the protective film 34 for example, mechanical strength such as a PI (polyimide resin) film or a PEEK (polyether ether ketone resin) film is used in order to prevent thermal deformation of the film in the mold due to clamping or molding temperature. Use a film with excellent heat resistance.
- the thickness of the protective film 34 is generally about several tens of ⁇ m.
- the leg portions 17 provided on the two opposite sides of the GDL 11 respectively provide the protective film 34 on the plane.
- the molded product may bend (bend or deform) during the thermal expansion. .
- the width dimension w of the protective film 34 is slightly shortened, and only one leg 17 is the protective film. 34 is constrained on a plane and the other leg 17 has a structure that does not constrain the protective film 34 on a plane (a structure in which the protective film 34 is held only on one leg 17 and not on the other leg 17). As a result, one end of the protective film 34 in the width direction is brought into a free state with respect to the other leg 17.
- the one end part of the protective film 34 is made into a free state, and the space
- the protective film 34 covers the MPL layer (surface treatment layer) 12 with one end held by the leg 17 and the other end released without being held by the leg 17. In this way, it is possible to effectively prevent the bending of the molded product.
Abstract
Description
(1-1)本発明は、製品形状への打ち抜き工程を要するGDL一体シールやフィルム一体シールの製造方法に関する。また本発明は、リップや一体化する部材の保護を目的とし、土台用のゴム突起部を成形するもので、GDL一体シールだけでなくフィルム一体シールでも実施可能である。また、燃料電池用ガスケット以外の分野(例えば一般産業用ガスケット)でも実施可能である。
(1-2)シールリップとは別に製品部とは関係ない箇所にシールリップより高さを高くしたゴム突起部を同時に成形する。突起部を土台として用いることでリップが置き台に接触することなく、リップを保護しながら置き並べることが可能となる。ゴム突起部は、製品形状への打ち抜き工程で打ち抜いてしまうため、製品のシール機能に問題になることはない。また土台として機能していれば、任意の場所に配置可能であり、必ずしもゴム突起部とシールリップが含浸で繋がっている必要はない。また成形時のゴム合流点に配置することで、エア抜き用のベントとして使用することも可能である。含浸もしくはスルーホールでGDL裏面(MPL処理面)にゴムを流し込み、MPL面にゴム突起部を成形して、MPLの保護として使用することも可能である。ゴム突起部は、成形後の金型からの離型用のチャックとして使用することも可能である。
(2-1)上記(1)にて、含浸もしくはスルーホールでGDL裏面(MPL処理面)にゴムを流し込み、MPL面にゴム突起部を成形して、MPLの保護として使用することを提案したが、MPLへのコンタミ付着や傷を防止するのにさらに効果的となる構造を提案する。
(2-2)成形品の成形において、MPL層を保護シート(例えば、非帯電性(コンタミ防止)、非汚染性、耐熱性のあるPPシート等)で覆ったまま、金型にインサートし成形する。保護シートには、ゴム突起部と相対する箇所に、事前にスルーホールを設けておき、射出成形で、GDLへのゴムの含浸と同時にスルーホールを通して、ゴム突起部キャビティに材料を流し込むことで、MPL処理を保護シートで覆ったまま、一体成形することが可能である。
(2-3)しかしながらこの成形方法でGDLと保護シートを一体成形しようとした場合、GDLと保護シートで線膨張の差があると、成形後の製品は、常温と高温での線膨張の差によるたわみが発生してしまう(保護シート両端がゴム突起部により拘束されており、GDLに追従してくるため)。これを解決するのに線膨張の差のない保護シートの選定が必要となるが、一般的にGDLは、内部残留応力により熱収縮してしまうのに対し、樹脂フィルム等の保護シートは熱膨張してしまうものがほとんどであり、線膨張差のない保護シートの選定は極めて困難である。
(2-4)そこで、保護シートの片端をゴム突起部から逃がした構造とする。ゴム突起部で両端が拘束されていないため、GDLと保護シートの線膨張の差があっても製品がたわむ心配はない。もう片端は、ゴム突起部と一体化されているため、保護シートがGDLから剥がれてしまうことはなく、MPL層を保護したまま、製品を取り扱うことが可能となる。突起部および保護シートは、最終の打ち抜き工程で取り除かれる。
(3-1)本発明は、燃料電池用ガスケットに関するもので、MPL(マイクロポーラス層)がコーティングされたGDLへの含浸一体ガスケットのMPL面を保護することを主目的とする。
(3-2)MPLがコーティングされたGDLへ射出成形により液状ゴムを含浸一体成形することが行なわれている(特開2006-107798)。
(3-3)本発明では、成形の後工程(2次加硫等)、あるいは保管の際に、
(3-3-1)リップ側にリップより高い突起を設けることでリップ側を下側にして置く際にリップを保護する、
(3-3-2)MPLがコーティングされている面側に突起を設けることでMPLを保護する、
こととなる。両構成共に突起部分は最終的には打ち抜くことになる。
(3-4)また、本発明では、MPLがコーティングされている面側へ突起を設けるとともに、更にコンタミ等の付着防止としてMPL面を保護フィルムで覆うこととなり、保護フィルムについても最終的には取り除くことになる。保護フィルム(樹脂フィルムを想定)とGDLとの熱変形の程度の差から金型内で熱が加わった状態で両側をゴムにより固定すると常温に戻った際に撓みが発生することから、GDLと保護フィルムの固定は片側のみとしたものとなる。保護フィルムとしては、型締めや成形温度による金型内でのフィルムの熱変形防止のために、PIフィルムやPEEKフィルムのような機械的強度、耐熱性に優れたフィルムを使用し、厚みは数10μmとなる。
(4)
機械強度が無いフィルムを保護フィルムとして選定すると、MPL処理によっては、成形時に型締めでフィルムが歪んだ際に、MPL処理と保護フィルムが型締め圧により固着してしまう問題が発生する場合がある。また、耐熱性が無い(ガラス転移点が低い)フィルムについても、金型中でフィルムが熱変形してしまいMPL固着が発生したり、意図するMPL保護機能を得ることができない場合がある。これらの場合、PIフィルムやPEEKフィルムのような、機械的特性、耐熱性に優れたフィルムを使用すると良い。
当該第一実施例では、第1工程時に図1(A)(B)に示すように、成形品におけるバリ部16に相当する位置にゴム状弾性体よりなる突起状の脚部17を一体成形し、第2工程時に図2に示すように、この脚部17をもって成形品を置き台31に接触させて脚部17によって成形品を支持し、第3工程時に図1(A)(B)に点線Cで示したように、この脚部17をバリ部16の一部として製品部15から切除する。第1工程時、脚部17はこれをガスケット本体13と同じくGDL11における厚み方向他方の面11bに一体成形し、ガスケット本体13よりも外周側で一体成形し、更に平面四角形をなすGDL11における4辺それぞれに1箇所ずつ所定の長さを備えるものとして一体成形する。また脚部17はその高さ寸法h1をガスケット本体13の高さ寸法h2よりも大きくなるように成形する。また脚部17とガスケット本体13はこれらを、GDL11が備えるポーラス構造に含浸するゴム含浸部18を介して一体に成形する。以上の構成によれば図2に示したように、脚部17によって成形品を支持した状態で仮置きの第2工程が実施されるため、MPL層12およびガスケット本体13は何れも置き台31に接触せず、よって接触による異物付着や汚染、傷付きなどからMPL層12およびガスケット本体13を有効に保護することができる。脚部17は図3に示すように、金型33から成形品を離型させる際の成形品チャック部としても利用される。
当該第二実施例では、第1工程時に図4(A)(B)に示すように、成形品におけるバリ部16に相当する位置にゴム状弾性体よりなる突起状の脚部17を一体成形し、第2工程時に図5に示すように、この脚部17をもって成形品を置き台31に接触させて脚部17によって成形品を支持し、第3工程時に図4(A)(B)に点線Cで示したように、この脚部17をバリ部16の一部として製品部15から切除する。第1工程時、脚部17はこれをガスケット本体13とは反対にGDL11におけるMPL層12を設けた厚み方向一方の面11a(MPL層12上)に一体成形し、ガスケット本体13よりも外周側で一体成形し、更に平面四角形をなすGDL11における4辺それぞれに1箇所ずつ所定の長さを備えるものとして一体成形する。脚部17の高さ寸法は特に問わない。また脚部17とガスケット本体13はこれらを、GDL11が備えるポーラス構造に含浸するゴム含浸部18およびMPL層12に予め設けたスルーホール12aに充填されるゴム充填部19を介して一体に成形する。以上の構成によれば図5に示したように、脚部17によって成形品を支持した状態で仮置きの第2工程が実施されるため、MPL層12およびガスケット本体13は何れも置き台31に接触せず、よって接触による異物付着や汚染、傷付きなどからMPL層12およびガスケット本体13を有効に保護することができる。脚部17は図6に示すように、金型33から成形品を離型させる際の成形品チャック部としても利用される。
上記第二実施例では、第1工程時に、脚部17とガスケット本体13を、GDL11が備えるポーラス構造に含浸するゴム含浸部18およびMPL層12に予め設けたスルーホール12aに充填されるゴム充填部19を介して一体に成形するようにしたが、これに代えて図7に示すように、脚部17とガスケット本体13を、GDL11が備えるポーラス構造に含浸するゴム含浸部18およびMPL層12が備えるポーラス構造に含浸するゴム含浸部20を介して一体に成形するようにしても良い。この第三実施例の他の構成および作用効果は上記第二実施例と同じである。
上記第一ないし第三実施例では、第1工程時に、脚部17とガスケット本体13をゴム含浸部18,20やゴム充填部19を介して一体に成形するようにしたが、これに代えて図8に示すように、脚部17とガスケット本体13を一体ではなく別体として成形するようにしても良い。この場合、金型構造は材料流路がガスケット本体13と脚部17で別系統となるため若干構造が複雑となるが、脚部17とガスケット本体13で異種材料を選択することが可能となる。
当該第五実施例では、図9(A)(B)に示すように、表面処理層であるMPL層12を保護すべくこのMPL層12を保護フィルム34で一時的に被覆した状態で上記第1ないし第3工程を順次実施する。
そこで、このような撓みの発生を防止するため、図11(A)(B)および図12に示すように、保護フィルム34の幅寸法wを若干短めとして、一方の脚部17のみが保護フィルム34を平面上拘束するとともに他方の脚部17は保護フィルム34を平面上拘束しない構造(保護フィルム34が一方の脚部17のみに保持されて他方の脚部17に保持されない構造)とし、これにより保護フィルム34の幅方向一端部を他方の脚部17に対しフリー状態とする。したがってこのような構造によれば、保護フィルム34の一端部がフリー状態とされて、一対の脚部17,17間の間隔寸法が熱膨張率の小さな保護フィルム34によって規定されてしまうことがないため、保護フィルム34とGDL11に熱膨張量の差が生じても図10(B)に示したような撓みの発生を未然に防止することができる。すなわちこれは、GDL(基板)11と保護フィルム34の熱膨張率の差にもとづいて加熱時、成形品に撓みを生じることがないように保護フィルム34を脚部17の全部ではなく一部で保持することにより保護フィルム34はその一端を脚部17で保持されるとともにその他端を脚部17で保持されずに解放された状態でMPL層(表面処理層)12を被覆するとするものであって、このようにすれば成形品に撓みが発生するのを有効に防止することができる。
11a 厚み方向一方の面
11b 厚み方向他方の面
12 MPL層(表面処理層)
12a,34a スルーホール
13 ガスケット本体
14 反応領域部
15 製品部
16 バリ部
17 脚部
18,20 ゴム含浸部
19,22 ゴム充填部
21 通路
31 置き台
32 保護シート
33 金型
34 保護フィルム
Claims (11)
- 基板の厚み方向一方の面に表面処理層を設けるとともに厚み方向他方の面にゴム状弾性体よりなるガスケット本体を一体成形してなるガスケット成形品を製造する方法であって、前記表面処理層を設けた前記基板に対し前記ガスケット本体を一体成形する第1工程と、前記第1工程を経た成形品を置き台上に仮置きする第2工程と、前記第2工程を経た成形品を打ち抜き加工してその製品部から周縁のバリ部を切除する第3工程とを順次実施するガスケット成形品の製造方法において、
前記第1工程時に、前記成形品における前記バリ部に相当する位置にゴム状弾性体よりなる突起状の脚部を一体成形し、前記第2工程時に、前記脚部をもって前記成形品を前記置き台に接触させ、前記第3工程時に、前記脚部を前記バリ部の一部として切除することを特徴とするガスケット成形品の製造方法。 - 請求項1記載の製造方法において、
前記脚部を前記ガスケット本体と同じく前記基板における厚み方向他方の面に一体成形し、このとき前記脚部を前記ガスケット本体よりも高さ寸法が大きくなるように成形することを特徴とするガスケット成形品の製造方法。 - 請求項2記載の製造方法において、
前記脚部と前記ガスケット本体を、前記基板が備えるポーラス構造に含浸するゴム含浸部を介して一体に成形することを特徴とするガスケット成形品の製造方法。 - 請求項1記載の製造方法において、
前記脚部を前記ガスケット本体とは反対に前記基板における前記表面処理層を設けた厚み方向一方の面に一体成形することを特徴とするガスケット成形品の製造方法。 - 請求項4記載の製造方法において、
前記脚部と前記ガスケット本体を、前記基板が備えるポーラス構造に含浸するゴム含浸部、および前記表面処理層に設けたスルーホールに充填されるゴム充填部を介して一体に成形することを特徴とするガスケット成形品の製造方法。 - 請求項4記載の製造方法において、
前記脚部と前記ガスケット本体を、前記基板が備えるポーラス構造に含浸するゴム含浸部、および前記表面処理層が備えるポーラス構造に含浸するゴム含浸部を介して一体に成形することを特徴とするガスケット成形品の製造方法。 - 請求項1記載の製造方法において、
前記表面処理層を保護すべく前記表面処理層を保護フィルムで被覆した状態で前記第1ないし第3工程を順次実施することを特徴とするガスケット成形品の製造方法。 - 請求項7記載の製造方法において、
前記脚部を前記ガスケット本体とは反対に前記基板における前記表面処理層を設けた厚み方向一方の面に一体成形し、前記脚部と前記ガスケット本体を、前記基板が備えるポーラス構造に含浸するゴム含浸部、前記表面処理層が備えるポーラス構造に含浸するゴム含浸部、および前記保護フィルムに設けたスルーホールに充填されるゴム充填部を介して一体に成形することを特徴とするガスケット成形品の製造方法。 - 請求項7記載の製造方法において、
前記脚部を前記ガスケット本体とは反対に前記基板における前記表面処理層を設けた厚み方向一方の面に一体成形し、前記脚部と前記ガスケット本体を、前記基板が備えるポーラス構造に含浸するゴム含浸部、前記表面処理層に設けたスルーホールに充填されるゴム充填部、および前記保護フィルムに設けたスルーホールに充填されるゴム充填部を介して一体に成形することを特徴とするガスケット成形品の製造方法。 - 請求項7ないし9の何れかに記載の製造方法において、
前記保護フィルムと前記基板に熱膨張率の差があることに鑑みて熱膨張時に撓みを生じることがないように、前記保護フィルムを前記脚部の全部ではなく一部のみによって拘束する構造とすることを特徴とするガスケット成形品の製造方法。 - 請求項1ないし10の何れかに記載の製造方法において、
前記基板は燃料電池セルにおけるGDLであり、前記表面処理層はMPL層であることを特徴とするガスケット成形品の製造方法。
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US13/819,012 US9090024B2 (en) | 2010-09-03 | 2011-07-26 | Method for producing molded gasket |
EP11821462.6A EP2612748B1 (en) | 2010-09-03 | 2011-07-26 | Method for producing molded gasket |
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WO2016006366A1 (ja) * | 2014-07-10 | 2016-01-14 | Nok株式会社 | プレート一体ガスケットの製造方法 |
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JP6276572B2 (ja) * | 2013-12-06 | 2018-02-07 | Nok株式会社 | ガスケットの成形型および製造方法 |
JP6254871B2 (ja) * | 2014-02-21 | 2017-12-27 | Nok株式会社 | ガスケット成形品の製造方法 |
JP6383203B2 (ja) * | 2014-07-25 | 2018-08-29 | Nok株式会社 | プレート一体ガスケットの製造方法 |
JP6595824B2 (ja) * | 2015-07-10 | 2019-10-23 | Nok株式会社 | 燃料電池セパレータ製造における樹脂ランナーバリ活用方法 |
JP7059539B2 (ja) * | 2017-09-06 | 2022-04-26 | トヨタ自動車株式会社 | 燃料電池用ガス拡散層の製造方法 |
US11331894B2 (en) * | 2018-06-08 | 2022-05-17 | Gemini Group, Inc. | Method of manufacturing a load structure |
KR102492886B1 (ko) * | 2020-12-14 | 2023-01-31 | 주식회사 화승알앤에이 | 연료전지용 가스켓 제조 방법 |
CN114771797A (zh) * | 2022-01-25 | 2022-07-22 | 重庆大学 | 粘弹性材料填充曲杆化点阵结构舵机减振底座及制造方法 |
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EP2612748B1 (en) | 2017-09-13 |
JP5679119B2 (ja) | 2015-03-04 |
CN103079798A (zh) | 2013-05-01 |
US9090024B2 (en) | 2015-07-28 |
JP2012071574A (ja) | 2012-04-12 |
EP2612748A4 (en) | 2016-10-12 |
US20130154150A1 (en) | 2013-06-20 |
KR101850438B1 (ko) | 2018-04-19 |
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CN103079798B (zh) | 2016-06-29 |
EP2612748A1 (en) | 2013-07-10 |
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