JP6132815B2 - Method for producing hot melt adhesive - Google Patents

Description

  The present invention relates to a method for producing a hot melt adhesive having a frame shape for joining a resin frame member to an outer periphery of an electrolyte membrane / electrode structure in which electrodes are provided on both sides of the electrolyte membrane.

  In general, a polymer electrolyte fuel cell employs a polymer electrolyte membrane made of a polymer ion exchange membrane. This fuel cell comprises an electrolyte membrane / electrode structure in which an anode electrode and a cathode electrode each comprising a catalyst layer (electrode catalyst layer) and a gas diffusion layer (porous carbon) are disposed on both sides of a solid polymer electrolyte membrane ( MEA). The electrolyte membrane / electrode structure is sandwiched between separators (bipolar plates) to constitute a fuel cell. A fuel cell is used as, for example, an in-vehicle fuel cell stack by stacking a predetermined number of fuel cells to form a fuel cell stack.

  In the electrolyte membrane / electrode structure, a resin frame member is incorporated in order to reduce the amount of a relatively expensive solid polymer electrolyte membrane used and to protect the solid polymer electrolyte membrane having a thin film shape and low strength. A framed MEA is employed.

  For example, the electrolyte membrane / electrode structure with a resin frame for a fuel cell disclosed in Patent Document 1 includes a step MEA and a resin frame member. In the step MEA, a first electrode and a second electrode each having an electrode catalyst layer and a gas diffusion layer are provided on both sides of the solid polymer electrolyte membrane, and the first electrode has an outer dimension larger than that of the second electrode. It is set small. On the other hand, the resin frame member has an inner peripheral end that protrudes to the outer peripheral side of the first electrode and contacts the outer peripheral edge of the solid polymer electrolyte membrane, and the outer peripheral edge and the inner peripheral end are bonded to each other. It is adhered by the agent layer.

JP2013-98155A

  By the way, in said patent document 1, as an adhesive which adhere | attaches the joining site | part of the outer peripheral edge part of a solid polymer electrolyte membrane, and the inner peripheral edge part of a resin frame member, a hot melt adhesive agent may be used, for example. is there.

  At that time, the joint portion has a frame shape. For this reason, a long sheet-like hot melt adhesive (hereinafter referred to as a sheet-like adhesive) has been manufactured in advance, and the center and end of the sheet-like adhesive are trimmed to form a hot melt adhesive having a frame shape. The agent is obtained.

  However, since the hot-melt adhesive having a frame shape is cut out from the sheet-like adhesive, a large amount of hot-melt adhesive that is discarded may be generated. Therefore, there is a problem that it is not economical and the entire operation becomes complicated.

  The present invention solves this type of problem, can reduce the amount of hot melt adhesive to be discarded as much as possible, and can manufacture the hot melt adhesive economically and efficiently. An object of the present invention is to provide a method for producing a hot melt adhesive.

  The present invention relates to a method for producing a hot melt adhesive having a frame shape for joining a resin frame member to an outer periphery of an electrolyte membrane / electrode structure in which electrodes are provided on both sides of the electrolyte membrane.

This manufacturing method, a hot melt adhesive material in a liquid phase from a plurality of ejection ports as well as discharge to the discharge site, the prescribed portions position is moved only in one direction relative to the discharge opening, a frame-shaped member It has a molding process for molding . And this manufacturing method has the drying process of drying the shape | molded frame-shaped member.
Further, in this manufacturing method, the discharge port is a first discharge port and a second discharge port that constitute a frame-shaped member and are arranged corresponding to one of the two sides parallel to each other, the first discharge port, and the first discharge port. It consists of a 3rd discharge port arrange | positioned between 2 discharge ports. In the molding step, the first discharge port, the second discharge port, and the third discharge port are opened in a state where the relative movement of the discharge target portion with respect to the discharge port is stopped, and the frame-shaped member is formed. The step of forming one of the other two sides that are parallel to each other, the first discharge port and the second discharge port being opened, and the third discharge port being closed, with respect to the discharge port The first discharge port, the second discharge port, and the step of moving the discharge target portion to form the one side and the relative movement of the discharge target portion with respect to the discharge port are stopped. Forming the remaining one of the other two sides by opening the third discharge port.

  Moreover, in this manufacturing method, it is preferable that the inner peripheral part and outer peripheral part of the dried frame-shaped member are trimmed.

  According to the present invention, the frame-shaped member is formed by discharging a liquid hot melt adhesive material from a plurality of discharge ports. And the hot-melt-adhesive which has a frame shape is obtained only by drying a frame-shaped member. Therefore, it is possible to reduce the amount of discarded hot melt adhesive as much as possible, and it is possible to manufacture the hot melt adhesive economically and efficiently.

It is a principal part disassembled perspective explanatory view of a polymer electrolyte fuel cell. FIG. 2 is a sectional view of the fuel cell taken along line II-II in FIG. 1. It is an isometric view explanatory drawing of the manufacturing apparatus used for the manufacturing method which concerns on the 1st Embodiment of this invention. It is a partially exploded perspective view of the manufacturing apparatus. It is front explanatory drawing of the said manufacturing apparatus. It is an isometric view explanatory drawing of the hot-melt-adhesive manufactured with the said manufacturing apparatus. It is explanatory drawing at the time of shape | molding one edge | side in the said manufacturing method. It is a plane explanatory view of the one side. It is explanatory drawing at the time of shape | molding two sides continuously in the said manufacturing method. It is a plane explanatory view of the two sides. It is explanatory drawing at the time of shape | molding another 1 side in the said manufacturing method. It is a plane explanatory view of the other one side. It is explanatory drawing of the adhesion | attachment operation | work by the said hot melt adhesive. It is a principal part perspective view of the manufacturing apparatus used for the manufacturing method which concerns on the 2nd Embodiment of this invention. It is plane explanatory drawing of the discharge adjustment part which comprises the said manufacturing apparatus. It is a top view explaining operation | movement of the said discharge adjustment part. It is a top view explaining operation | movement of the said discharge adjustment part.

  As shown in FIGS. 1 and 2, a polymer electrolyte fuel cell 10 includes an electrolyte membrane / electrode structure 14 with a resin frame in which a hot melt adhesive 12 manufactured by the manufacturing method according to the present invention is used. . The plurality of fuel cells 10 are stacked in, for example, an arrow A direction (horizontal direction) or an arrow C direction (gravity direction) to form a fuel cell stack. The fuel cell stack is mounted on, for example, a fuel cell electric vehicle (not shown) as an in-vehicle fuel cell stack.

  In the fuel cell 10, the electrolyte membrane / electrode structure 14 with a resin frame is sandwiched between a cathode separator 16 and an anode separator 18. The cathode-side separator 16 and the anode-side separator 18 are made of, for example, a steel plate, a stainless steel plate, an aluminum plate, a plated steel plate, a metal plate whose surface is subjected to anticorrosion treatment, a carbon member, or the like.

  As shown in FIG. 2, the electrolyte membrane / electrode structure 14 with a resin frame includes an electrolyte membrane / electrode structure 14 a that is a step MEA. The electrolyte membrane / electrode structure 14 a includes, for example, a solid polymer electrolyte membrane 19 in which a perfluorosulfonic acid thin film is impregnated with water, and an anode electrode 20 and a cathode electrode 22 sandwiching the solid polymer electrolyte membrane 19. Have. The solid polymer electrolyte membrane 19 uses an HC (hydrocarbon) electrolyte in addition to a fluorine electrolyte.

  The anode electrode 20 has a smaller planar dimension than the solid polymer electrolyte membrane 19 and the cathode electrode 22. The anode electrode 20 and the cathode electrode 22 may have the same planar dimension, and the cathode electrode 22 may have a smaller planar dimension than the anode electrode 20.

  The anode electrode 20 is disposed on one surface 19a of the solid polymer electrolyte membrane 19, and exposes the outer peripheral edge portion 19e of the solid polymer electrolyte membrane 19 in a frame shape. The cathode electrode 22 is disposed over the other surface 19 b of the solid polymer electrolyte membrane 19.

  The anode electrode 20 is provided with an electrode catalyst layer 20a bonded to the surface 19a of the solid polymer electrolyte membrane 19, and a gas diffusion layer 20b laminated on the electrode catalyst layer 20a. The cathode electrode 22 includes an electrode catalyst layer 22a bonded to the surface 19b of the solid polymer electrolyte membrane 19, and a gas diffusion layer 22b stacked on the electrode catalyst layer 22a.

  The electrode catalyst layers 20a and 22a are formed by uniformly applying porous carbon particles carrying a platinum alloy on the surfaces thereof to the surfaces of the gas diffusion layers 20b and 22b. The gas diffusion layers 20b and 22b are made of carbon paper or the like, and the plane dimension of the gas diffusion layer 20b is set smaller than the plane dimension of the gas diffusion layer 22b. The electrode catalyst layers 20a and 22a are formed on both surfaces 19a and 19b of the solid polymer electrolyte membrane 19, for example.

  As shown in FIGS. 1 and 2, the resin frame-attached electrolyte membrane / electrode structure 14 circulates around the outer periphery of the solid polymer electrolyte membrane 19 and is joined to the anode electrode 20 and the cathode electrode 22. Is provided. The resin frame member 24 includes, for example, PPS (polyphenylene sulfide), PPA (polyphthalamide), PEN (polyethylene naphthalate), PES (polyethersulfone), LCP (liquid crystal polymer), PVDF (polyvinylidene fluoride), It is composed of silicone rubber, fluorine rubber, EPDM (ethylene propylene rubber), m-PPE (modified polyphenylene ether resin), or the like.

  The resin frame member 24 has an inner peripheral end portion 24 a that protrudes toward the outer peripheral side of the anode electrode 20 and contacts the outer peripheral edge portion 19 e of the solid polymer electrolyte membrane 19. The inner peripheral end 24a has the same thickness as the anode electrode 20, substantially the same thickness as the gas diffusion layer 20b (when the intermediate layer is provided on the gas diffusion layer 20b, Including the thickness of the intermediate layer).

  The inner peripheral edge 24a of the resin frame member 24 and the outer peripheral edge 19e of the solid polymer electrolyte membrane 19 are bonded by a hot-melt adhesive 12 having an ester-based, acrylic-based, or urethane-based frame shape. The melting temperature of the hot melt adhesive 12 is, for example, 150 ° C. to 170 ° C., and the melting temperature of the resin frame member 24 is, for example, 360 ° C. The hot melt adhesive 12 is formed in a frame shape over the entire circumference of the outer peripheral edge portion 19 e of the solid polymer electrolyte membrane 19. The resin frame member 24 and the gas diffusion layer 22b of the cathode electrode 22 may be integrated by, for example, a resin impregnated portion (not shown).

  As shown in FIG. 1, one end edge of the fuel cell 10 in the direction of arrow A (horizontal direction in FIG. 1) communicates with each other in the direction of arrow B, which is the stacking direction. A cooling medium inlet communication hole 32a and a fuel gas outlet communication hole 34b are provided. The oxidant gas inlet communication hole 30a supplies an oxidant gas, for example, an oxygen-containing gas, while the cooling medium inlet communication hole 32a supplies a cooling medium. The fuel gas outlet communication hole 34b discharges fuel gas, for example, hydrogen-containing gas. The oxidant gas inlet communication hole 30a, the cooling medium inlet communication hole 32a, and the fuel gas outlet communication hole 34b are arranged in the direction of arrow C (vertical direction).

  The other end edge of the fuel cell 10 in the direction of arrow A communicates with each other in the direction of arrow B, the fuel gas inlet communication hole 34a for supplying fuel gas, the cooling medium outlet communication hole 32b for discharging the cooling medium, and the oxidation An oxidant gas outlet communication hole 30b for discharging the oxidant gas is provided. The fuel gas inlet communication hole 34a, the cooling medium outlet communication hole 32b, and the oxidant gas outlet communication hole 30b are arranged in the direction of arrow C.

  An oxidant gas flow path 36 communicating with the oxidant gas inlet communication hole 30a and the oxidant gas outlet communication hole 30b is provided on the surface 16a of the cathode separator 16 facing the electrolyte membrane / electrode structure 14 with a resin frame. .

  A fuel gas flow path 38 communicating with the fuel gas inlet communication hole 34a and the fuel gas outlet communication hole 34b is formed on the surface 18a of the anode separator 18 facing the electrolyte membrane / electrode structure 14 with a resin frame. A cooling medium flow path 40 communicating with the cooling medium inlet communication hole 32a and the cooling medium outlet communication hole 32b is formed between the surface 18b of the anode side separator 18 and the surface 16b of the cathode side separator 16 adjacent to each other. .

  As shown in FIGS. 1 and 2, the first seal member 42 is integrated with the surfaces 18 a and 18 b of the anode separator 18 around the outer peripheral end of the anode separator 18. The second seal member 44 is integrated with the surfaces 16 a and 16 b of the cathode side separator 16 around the outer peripheral end of the cathode side separator 16.

  As shown in FIG. 2, the first seal member 42 includes a first convex seal 42a that contacts the inner peripheral end 24a of the resin frame member 24 constituting the electrolyte membrane / electrode structure 14 with a resin frame, and a cathode side. And a second convex seal 42b that contacts the second seal member 44 of the separator 16. The second seal member 44 constitutes a planar seal that extends in a planar shape along the separator surface. Instead of the second convex seal 42b, the second seal member 44 may be provided with a convex seal (not shown).

  The first and second sealing members 42 and 44 include, for example, EPDM, NBR, fluorine rubber, silicone rubber, fluorosilicone rubber, butyl rubber, natural rubber, styrene rubber, chloroprene or acrylic rubber, a cushioning material, Alternatively, an elastic seal member such as a packing material is used.

  As shown in FIG. 1, the anode-side separator 18 has a supply hole portion 46 that communicates the fuel gas inlet communication hole 34a with the fuel gas passage 38, and the fuel gas passage 38 communicates with the fuel gas outlet communication hole 34b. A discharge hole 48 is formed.

  Next, a method for manufacturing the resin membrane-attached electrolyte membrane / electrode structure 14 will be described below.

  First, the electrolyte membrane / electrode structure 14a which is the step MEA is manufactured, and the resin frame member 24 is molded by injection molding using a mold (not shown). The resin frame member 24 integrally has a thin inner peripheral end 24a.

  On the other hand, the hot melt adhesive 12 having a frame shape is manufactured by the manufacturing apparatus 50 according to the first embodiment shown in FIG. The manufacturing apparatus 50 includes an adhesive dispenser 52 and a transfer table 54.

  As shown in FIGS. 3 to 5, the adhesive dispenser 52 includes a storage portion 58 in which a liquid hot-melt adhesive material 56 is stored. As shown in FIGS. 4 and 5, the attachment surface 58 a that is the front surface of the storage portion 58 is formed with an opening 60 that communicates with the inside of the storage portion 58 at the lower end position. The opening 60 has a slit shape that is long in the horizontal direction (arrow W direction). The opening width dimension t, the opening height h, and the opening depth (depth) d of the opening 60 in the horizontal direction are set corresponding to the hot melt adhesive 12.

  As shown in FIG. 6, the hot melt adhesive 12 has one two sides (long sides) 12a1 and 12a2 parallel to each other and the other two sides (short sides) 12b1 and 12b2 parallel to each other. The short side dimension S1 of the hot melt adhesive 12 is the sum of the width dimension Sa, Sa of the two sides 12a1, 12a2 and the opening size Sb between the two sides 12a1, 12a2 (S1 = 2 × Sa + Sb). . The short side dimension S <b> 1 is equal to the opening width dimension t of the opening 60. As will be described later, when the frame-shaped member 78 contracts due to the drying process, t = S1 + Δt is set in anticipation of the contraction dimension Δt. The opening height h is set similarly. Further, the opening depth d may be equal to the width dimension Sw of the sides 12b1 and 12b2, or may be smaller than the width dimension Sw.

  As shown in FIGS. 3 to 5, the discharge adjustment unit 62 is attached to the attachment surface 58 a of the storage unit 58. The discharge adjusting unit 62 includes a gate-shaped frame 64, and a first discharge block (discharge port) 66, a second discharge block (discharge port) 68, and a third discharge block (discharge port) are formed in the opening 64 a of the frame 64. An outlet 70 is slidably arranged in the vertical direction. The first discharge block 66, the second discharge block 68, and the third discharge block 70 are connected to elevating cylinders 72a, 72b, and 72c.

  The width dimension of the first discharge block 66 and the width dimension of the second discharge block 68 are set to be equal to or greater than the width dimensions Sa and Sa of the two sides 12a1 and 12a2. The third discharge block 70 is set to the same size as the opening size Sb between the two sides 12a1 and 12a2. When the first discharge block 66, the second discharge block 68, and the third discharge block 70 are arranged at the lower end position, the entire opening 60 is closed liquid-tightly.

  As shown in FIG. 3, the transfer table 54 includes a base surface 76 that slidably contacts a plurality of rollers 74 and moves around in the direction of arrow F. The position of the end portion of the base surface 76 is set to a position that substantially coincides with the opening 60.

  First, as shown in FIG. 7, the elevating cylinders 72a, 72b and 72c are driven, and the first discharge block 66, the second discharge block 68 and the third discharge block 70 are raised. For this reason, the opening 60 is opened over the entire width direction, and as shown in FIG. 8, one side 12b1 of the other two sides 12b1 and 12b2 parallel to each other is formed on the base surface 76. Molded. Note that the movement of the base surface 76 is stopped.

  Furthermore, as shown in FIG. 9, with the first discharge block 66 and the second discharge block 68 opened, the third discharge block 70 is lowered via the elevating cylinder 72c to block the center side of the opening 60. Let Here, as shown in FIG. 3, when the base surface 76 moves in the direction of the arrow F, the two sides 12a1 and 12a2 are continuously formed on the base surface 76, connected to the side 12b1 ( (See FIG. 10).

  Next, the movement of the base surface 76 is stopped, and the third discharge block 70 is raised through the elevating cylinder 72c as shown in FIG. Accordingly, since the opening 60 is opened in the full width direction, the side 12b2 is formed on the base surface 76 continuously to the two sides 12a1 and 12a2 (see FIG. 12). Thereby, the frame-shaped member 78 is shape | molded (refer FIG. 3).

  The formed frame-shaped member 78 is conveyed to a drying station (not shown) via the transfer table 54, and the frame-shaped member 78 is subjected to a drying process. As for the dried frame-shaped member 78, the hot melt adhesive 12 is manufactured by trimming an inner peripheral part and an outer peripheral part.

  Next, as shown in FIG. 13, in the electrolyte membrane / electrode structure 14a, the hot melt adhesive 12 is disposed on the outer peripheral edge portion 19e of the solid polymer electrolyte membrane 19 exposed from the outer periphery of the anode electrode 20 to the outside. . The resin frame member 24 has an inner peripheral end 24a disposed on the anode electrode 20 side. In this state, the hot melt adhesive 12 is heated and melted (hot melt), and a load (press or the like) is applied to bond the inner peripheral end 24 a and the solid polymer electrolyte membrane 19. Therefore, the electrolyte membrane / electrode structure 14 with a resin frame is manufactured.

  As shown in FIG. 2, the electrolyte membrane / electrode structure 14 with a resin frame is sandwiched between an anode-side separator 18 and a cathode-side separator 16. The anode side separator 18 abuts on the inner peripheral end 24 a of the resin frame member 24, and applies a load to the electrolyte membrane / electrode structure 14 with a resin frame together with the cathode side separator 16. Furthermore, a predetermined number of fuel cells 10 are stacked to form a fuel cell stack, and a tightening load is applied between end plates (not shown).

  The operation of the fuel cell 10 configured as described above will be described below.

  First, as shown in FIG. 1, an oxidant gas such as an oxygen-containing gas is supplied to the oxidant gas inlet communication hole 30a, and a fuel gas such as a hydrogen-containing gas is supplied to the fuel gas inlet communication hole 34a. Further, a cooling medium such as pure water, ethylene glycol, or oil is supplied to the cooling medium inlet communication hole 32a.

  Therefore, the oxidant gas is introduced from the oxidant gas inlet communication hole 30a into the oxidant gas flow path 36 of the cathode-side separator 16 and moves in the arrow A direction to the cathode electrode 22 of the electrolyte membrane / electrode structure 14a. Supplied. On the other hand, the fuel gas is introduced from the fuel gas inlet communication hole 34 a through the supply hole 46 into the fuel gas flow path 38 of the anode side separator 18. The fuel gas moves in the direction of arrow A along the fuel gas flow path 38 and is supplied to the anode electrode 20 of the electrolyte membrane / electrode structure 14a.

  Therefore, in the electrolyte membrane / electrode structure 14a, the oxidant gas supplied to the cathode electrode 22 and the fuel gas supplied to the anode electrode 20 are consumed by the electrochemical reaction in the electrode catalyst layers 22a and 20a. Power generation is performed.

  Next, the oxidant gas consumed by being supplied to the cathode electrode 22 is discharged in the direction of arrow B along the oxidant gas outlet communication hole 30b. Similarly, the fuel gas consumed by being supplied to the anode electrode 20 passes through the discharge hole portion 48 and is discharged in the direction of arrow B along the fuel gas outlet communication hole 34b.

  Further, the cooling medium supplied to the cooling medium inlet communication hole 32a is introduced into the cooling medium flow path 40 between the anode side separator 18 and the cathode side separator 16 adjacent to each other, and then flows in the direction of the arrow A. The cooling medium is discharged from the cooling medium outlet communication hole 32b after the electrolyte membrane / electrode structure 14a is cooled.

  In this case, in the first embodiment, as shown in FIGS. 5, 7, 9 and 11, the first discharge block 66, the second discharge block 68 and the third discharge block 70 which are a plurality of discharge ports. The frame-shaped member 78 is molded. And after drying the frame-shaped member 78, the hot-melt-adhesive 12 which has a frame shape is obtained only by trimming an inner peripheral part and an outer peripheral part. Thereby, the hot-melt-adhesive 12 discarded can be reduced as much as possible, and the effect that it becomes possible to manufacture the said hot-melt-adhesive 12 economically and efficiently is acquired.

  FIG. 14 is a perspective view of main parts of a manufacturing apparatus 80 used in the manufacturing method according to the second embodiment of the present invention. Note that the same components as those of the manufacturing apparatus 50 according to the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The manufacturing apparatus 80 includes an adhesive dispenser 82 and a transfer table 54. The adhesive dispenser 82 has a storage portion 84 in which the liquid hot melt adhesive material 56 is stored. An opening 60 is formed on the bottom surface of the storage portion 84 and a discharge adjustment portion 86 is attached.

  As shown in FIG. 15, the discharge adjusting portion 86 is formed with an opening 60 a that communicates with the opening 60 and penetrates vertically. The opening 60 a is set to the same size as the opening 60 and opens on the base surface 76 of the transfer table 54. A first discharge block 66, a second discharge block 68, and a third discharge block 70 are slidably disposed in the discharge adjustment unit 86 in the horizontal direction.

  Cylinders 72 a 1, 72 b 1 and 72 c 1 are connected to the first discharge block 66, the second discharge block 68 and the third discharge block 70. When the first discharge block 66, the second discharge block 68, and the third discharge block 70 are disposed at the forward end position, the entire opening 60a is liquid-tightly closed.

  Therefore, first, as shown in FIG. 16, the cylinders 72a1, 72b1, and 72c1 are driven, and the first discharge block 66, the second discharge block 68, and the third discharge block 70 are moved backward. Therefore, the opening 60a is opened over the entire width direction, and one side 12b1 is formed on the base surface 76 as shown in FIG.

  Further, as shown in FIG. 17, with the first discharge block 66 and the second discharge block 68 opened, the third discharge block 70 is advanced through the cylinder 72c1 to close the center side of the opening 60a. . Here, when the base surface 76 moves, the two sides 12a1 and 12a2 are continuously formed on the base surface 76 by being connected to the side 12b1 (see FIG. 10).

  Next, the movement of the base surface 76 is stopped, and the third discharge block 70 is moved backward via the cylinder 72c1. Therefore, since the opening 60a is opened in the full width direction, the side 12b2 is formed on the base surface 76 continuously to the two sides 12a1 and 12a2 (see FIG. 12). Thereby, the frame-shaped member 78 is shape | molded. The molded frame-shaped member 78 is subjected to a drying process, and then the inner peripheral portion and the outer peripheral portion are trimmed, whereby the hot melt adhesive 12 is manufactured.

  As described above, in the second embodiment, the discarded hot melt adhesive 12 can be reduced as much as possible, and the hot melt adhesive 12 can be manufactured economically and efficiently. The same effects as those of the first embodiment are obtained.

DESCRIPTION OF SYMBOLS 10 ... Fuel cell 12 ... Hot melt adhesive 14 ... Electrolyte membrane and electrode structure 14a with resin frame 16 ... Electrolyte membrane / electrode structure 16 ... Cathode side separator 18 ... Anode side separator 19 ... Solid polymer electrolyte membrane 20 ... Anode electrode 20a, 22a ... Electrode catalyst layers 20b, 22b ... Gas diffusion layer 22 ... Cathode electrode 24 ... Resin frame member 24a ... Inner peripheral edge 30a ... Oxidant gas inlet communication hole 30b ... Oxidant gas outlet communication hole 32a ... Cooling medium inlet Communication hole 32b ... Cooling medium outlet communication hole 34a ... Fuel gas inlet communication hole 34b ... Fuel gas outlet communication hole 36 ... Oxidant gas flow path 38 ... Fuel gas flow path 40 ... Cooling medium flow path 42, 44 ... Seal member 50, DESCRIPTION OF SYMBOLS 80 ... Manufacturing apparatus 52, 82 ... Adhesive discharge machine 54 ... Transfer stand 56 ... Hot melt adhesive material 58, 84 ... Storage part 60, 60a, 64 ... opening 62,86 ... discharge adjustment unit 66, 68, 70 ... discharge block 72 a to 72 c ... lifting cylinder 72A1,72b1,72c1 ... cylinder 76 ... base surface 78 ... frame-shaped member

Claims (2)

A method for producing a hot melt adhesive having a frame shape for joining a resin frame member to an outer periphery of an electrolyte membrane / electrode structure provided with electrodes on both sides of the electrolyte membrane,
A molding step of discharging a liquid hot melt adhesive material from a plurality of discharge ports to a discharge site, moving the discharge site only in one direction with respect to the discharge port , and forming a frame-shaped member;
A drying step of drying the molded frame-shaped member;
It has a, and,
The discharge port includes a first discharge port and a second discharge port that constitute the frame-shaped member and are arranged corresponding to one of two sides parallel to each other, and the first discharge port and the second discharge port. A third outlet arranged in between,
The molding step includes
The first discharge port, the second discharge port, and the third discharge port are opened in a state in which the relative movement of the discharge target portion with respect to the discharge port is stopped, and the frame-shaped members are configured to each other. A step of molding one side of the other two sides in parallel;
In a state where the first discharge port and the second discharge port are opened and the third discharge port is closed, the portion to be discharged is moved with respect to the discharge port, and one of the two sides is molded. And a process of
By opening the first discharge port, the second discharge port, and the third discharge port in a state in which the relative movement of the discharge target portion with respect to the discharge port is stopped, the inside of the other two sides A step of molding the remaining one side;
A method for producing a hot melt adhesive, comprising:   2. The method for manufacturing a hot melt adhesive according to claim 1, further comprising a step of trimming an inner periphery and an outer periphery of the dried frame-shaped member.

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