JP5691873B2 - Membrane electrode assembly manufacturing apparatus and manufacturing method - Google Patents

Description

  The present invention relates to the manufacture of a membrane electrode assembly used in a fuel cell.

  In a membrane electrode assembly used for a fuel cell, catalyst electrodes (anode and cathode) carrying a catalyst for promoting a fuel cell reaction are formed on both surfaces of an electrolyte membrane. As a manufacturing method of this membrane electrode assembly, a catalyst electrode layer formed on a belt-like carrier film is superimposed on both surfaces of a belt-like electrolyte membrane, and heated and pressurized with two hot rolls. A method for continuously producing the membrane electrode assembly has been proposed (see Patent Document 1 below).

  In the manufacturing method of the above-described conventional example, the electrolyte membrane formed on the belt-shaped carrier film is superimposed on one catalyst electrode layer, and at the same time, in contact with one heating roll through this catalyst electrode layer, After the carrier film is peeled off by the nip roll and the other catalyst electrode layer is superimposed on the peeled surface of the carrier film of the electrolyte membrane, it is pressurized by two heating rolls.

  Here, the electrolyte membrane usually has a characteristic that the membrane has low rigidity. Further, since the electrolyte membrane is a polymer membrane, it has a characteristic that it is easily contracted by heating. Therefore, since the electrolyte membrane before being pressed is merely superimposed on the catalyst electrode layer, shrinkage due to heat from the heating roll occurs and the electrolyte membrane is pressed onto the catalyst electrode layer by the nip roll. In addition, wrinkles are likely to occur. For this reason, since the catalyst electrode layer is joined to the electrolyte membrane in a state where heat shrinkage or wrinkles are generated by heating and pressurizing, a membrane electrode assembly in which shrinkage or wrinkles are generated in the electrolyte membrane is generated. Become. In addition, when the temperature returns to room temperature, the electrolyte membrane tends to return from the contracted state, so that distortion occurs between the bonded catalyst electrode layer and the electrolyte membrane, which causes wrinkles and warpage.

JP 2010-055922 A JP 2004-026348 A

  Therefore, the present invention suppresses wrinkles and wrinkles of the electrolyte membrane caused by peeling of the base sheet attached to the electrolyte membrane sheet during the manufacture of the membrane electrode assembly, and also prevents thermal contraction of the electrolyte membrane due to heating. An object of the present invention is to provide a manufacturing technique of a membrane electrode assembly for a fuel cell that can suppress generation of wrinkles and suppress generation of distortion between an electrolyte membrane and a catalyst electrode layer.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

[Application Example 1]
An apparatus for manufacturing a membrane electrode assembly,
A strip-shaped laminate sheet in which an electrolyte membrane sheet is formed on a base sheet and a strip-shaped catalyst electrode layer sheet are fed, and the electrolyte membrane sheet and the catalyst electrode layer sheet of the fed laminate sheet are bonded to each other A matching section;
A heating unit that heats and pressurizes the bonded electrolyte membrane sheet and the catalyst electrode layer sheet to join the bonded electrolyte membrane sheet and the catalyst electrode layer sheet; and
The bonding part is
A peeling roller for peeling the base sheet from the laminate sheet;
First and second laminating rollers constituting a laminating roller pair for laminating the catalyst electrode layer sheet to the first surface of the electrolyte membrane sheet from which the base sheet has been peeled;
With
The peeling roller is a roller of the peeling roller in a state where the laminated sheet is in contact with the roller surface of the first laminating roller at a position before the laminated sheet reaches the nip portion of the laminating roller pair. Wrapping the base sheet along the surface and peeling the base sheet,
The first laminating roller is configured so that the second surface opposite to the first surface of the peeled electrolyte membrane sheet is in contact with the roller surface of the first laminating roller. In accordance with the rotation of the first laminating roller, the electrolyte membrane sheet is moved along the roller surface of the first laminating roller to the nip portion of the laminating roller pair,
The second laminating roller is configured to superimpose the fed catalyst electrode layer sheet on the first surface of the peeled electrolyte membrane sheet according to the rotation of the second laminating roller. Move to the nip part of the bonding roller pair,
The laminating roller pair presses the electrolyte membrane sheet and the catalyst electrode layer sheet superposed at the nip portion without heating, thereby superposing the superposed electrolyte membrane sheet and the catalyst electrode layer sheet. An apparatus for manufacturing a membrane electrode assembly, characterized in that:
According to the apparatus for manufacturing a membrane electrode assembly, in the bonding portion, the laminated sheet is in contact with the roller surface of the first bonding roller, and the base sheet is peeled off without being heated and the electrolyte membrane sheet. After the catalyst electrode layer sheet and the catalyst electrode layer sheet are bonded together, the electrolyte membrane sheet and the catalyst electrode layer sheet can be joined by heating and pressurization at the joint. Thereby, generation | occurrence | production of the wrinkle of the electrolyte membrane at the time of peeling of a base sheet is suppressed effectively, and highly accurate bonding is possible. In addition, it is possible to suppress heat shrinkage and wrinkle generation of the electrolyte membrane due to heating, and to suppress generation of distortion between the electrolyte membrane and the catalyst electrode layer.

[Application Example 2]
The apparatus for manufacturing a membrane electrode assembly according to Application Example 1, wherein the first bonding roller is a suction roller that adsorbs the second surface of the electrolyte membrane sheet to the roller surface of the first bonding roller .
If the first laminating roller is a suction roller, the electrolyte membrane sheet can be adsorbed to the roller surface of the first laminating roller, so that the electrolyte membrane sheet is stably on the roller surface of the first laminating roller. Can be more effectively suppressed, and generation of wrinkles and the like during peeling of the base sheet can be more effectively suppressed, and more accurate bonding can be performed.

[Application Example 3]
An apparatus for manufacturing a membrane electrode assembly according to Application Example 1 or Application Example 2,
The electrolyte membrane sheet of the laminate sheet fed to the bonding portion is an electrolyte membrane sheet with a catalyst electrode layer in which a first catalyst electrode layer is formed on the second surface of the electrolyte membrane sheet,
The catalyst electrode layer sheet sent to the bonding part is formed with a second catalyst electrode layer bonded to the first surface of the electrolyte membrane sheet.
According to this membrane electrode assembly manufacturing apparatus, since the first catalyst electrode layer is formed in advance on the electrolyte membrane sheet, it is possible to more effectively suppress wrinkles and the like generated when the base sheet is peeled off. It is.

[Application Example 4]
A laminating apparatus for laminating and transporting a strip-shaped laminate sheet in which a first sheet is formed on a base sheet and a second sheet,
A peeling roller for peeling the base sheet from the laminate sheet;
First and second laminating rollers constituting a laminating roller pair for laminating the second sheet to the first surface of the first sheet from which the base sheet has been peeled;
With
The peeling roller is a roller of the peeling roller in a state where the laminated sheet is in contact with the roller surface of the first laminating roller at a position before the laminated sheet reaches the nip portion of the laminating roller pair. Wrapping the base sheet along the surface and peeling the base sheet,
The first laminating roller is in a state where the second surface opposite to the first surface of the peeled first sheet is in contact with the roller surface of the first laminating roller, The peeled first sheet is moved along the roller surface of the first laminating roller to the nip portion of the laminating roller pair according to the rotation of the first laminating roller,
The second laminating roller superimposes the fed second sheet on the first surface of the peeled first sheet according to the rotation of the second laminating roller. Move to the nip portion of the bonding roller pair,
The laminating roller pair pressurizes the first sheet and the second sheet superimposed at the nip portion without heating, thereby superimposing the first and second sheets superimposed on each other. A laminating apparatus characterized by laminating.
According to this laminating apparatus, the laminated sheet is in contact with the roller surface of the first laminating roller, and without heating, the base sheet is peeled off and the peeled first sheet; A sheet can be bonded together. Thereby, when peeling a base sheet from a 1st laminated body sheet | seat, it can suppress that a wrinkle etc. generate | occur | produce in a 1st sheet | seat effectively, and highly accurate bonding is possible.

[Application Example 5]
The laminating apparatus according to application example 4, wherein the first laminating roller is a suction roller that adsorbs the second surface of the first sheet to the roller surface of the first laminating roller .
If the first laminating roller is a suction roller, the first sheet can be adsorbed on the roller surface of the first laminating roller. The sheet can be stably held, and the generation of wrinkles and the like of the first sheet at the time of peeling of the base sheet can be more effectively suppressed, and more accurate bonding can be performed.

[Application Example 6]
A bonding apparatus according to Application Example 4 or Application Example 5,
The first sheet is an electrolyte membrane sheet composed of an electrolyte membrane,
The second sheet is a catalyst electrode layer sheet composed of a catalyst electrode layer.
According to this bonding apparatus, it is possible to effectively suppress the generation of wrinkles and the like of the electrolyte membrane when the base sheet is peeled off and to perform high-precision bonding.

[Application Example 7]
The bonding apparatus according to claim 4 or 5, wherein:
The first sheet is an electrolyte membrane sheet with a catalyst electrode layer in which a first catalyst electrode layer is formed on an electrolyte membrane sheet composed of an electrolyte membrane,
The second sheet is a catalyst electrode layer sheet composed of a second catalyst electrode layer.
According to this bonding apparatus, it is possible to more effectively suppress the occurrence of wrinkles and the like of the electrolyte membrane at the time of peeling the base sheet and to perform bonding with higher accuracy.

  The present invention can be realized in various forms, for example, in various forms such as a manufacturing apparatus and manufacturing method of a membrane electrode assembly for a fuel cell, a bonding apparatus, and a bonding method. be able to.

It is a schematic diagram shown about the membrane electrode assembly manufacturing apparatus as one Embodiment of this invention. It is a schematic diagram which expands and shows a 1st bonding part. It is a schematic diagram shown about the 2nd bonding part which match | combined the peeling structure and the bonding structure. It is a schematic diagram shown about the diffusion layer junction part to which the structure of the 1st bonding part is applied.

A. Example:
FIG. 1 is a schematic view showing a membrane / electrode assembly manufacturing apparatus as one embodiment of the present invention. The membrane electrode assembly manufacturing apparatus 100 includes a first bonding unit 10, a bonding unit 20, and a second bonding unit 30.

  The first bonding unit 10 includes a peeling roller 12 and first and second bonding rollers 14a and 14b. The peeling roller 12 is a roller for peeling the first base sheet S1 from the laminate sheet W0 fed from the first sheet unwinding portion RO1. The first and second laminating rollers 14a and 14b are the second sheet W2 fed from the second sheet unwinding portion RO2 to the first sheet W1 in a state where the first base sheet S1 is peeled off. A pair of laminating rollers for laminating is formed. In addition, as for the 1st sheet | seat unwinding part RO1, the roll of the laminated body sheet W0 wound by roll shape is set, and the laminated body sheet W0 is unwound. The second sheet unwinding section RO2 unwinds the second sheet W2 by setting the roll of the second sheet W2 wound in a roll shape.

  The laminate sheet W0 is a sheet in which a band-shaped electrolyte membrane sheet with a catalyst electrode layer is formed as a first sheet W1 on a band-shaped first base sheet S1. The electrolyte membrane with a catalyst electrode layer is a multilayer film in which a first catalyst electrode layer M2 is formed on a sheet of a strip-shaped electrolyte membrane M1. In the first catalyst electrode layer M2, a plurality of catalyst electrode layers M2p are formed at regular intervals. As the first base sheet S1, for example, a polyester film such as PET (polyethylene terephthalate) or PEN (polyethylene naphthalate), or a polymer film such as polystyrene is used. As the electrolyte membrane M1, a solid polymer electrolyte material that exhibits good proton conductivity in a wet state is used. As the solid polymer electrolyte material, for example, a fluorine-based resin (for example, Nafion, manufactured by DuPont) provided with perfluorocarbon sulfonic acid can be used. As the first catalyst electrode layer M2, as a catalyst for promoting the power generation reaction, for example, platinum or carbon particles supporting a platinum alloy, and an electrolyte similar to the polymer electrolyte constituting the electrolyte membrane are used. The catalyst electrode layer material provided can be formed by coating on the electrolyte membrane M1.

  The second sheet W2 is a catalyst electrode layer sheet in which a second catalyst electrode layer M3 is formed in a sheet shape on a strip-shaped second base sheet S2. For example, a polymer film such as PET or PTFE (polytetrafluoroethylene) is used as the second base sheet S2. The second catalyst electrode layer M3 can be formed by coating the catalyst electrode layer material on the second base sheet S2, similarly to the first catalyst electrode layer M2.

  FIG. 2 is an enlarged schematic view showing the first bonding portion. The first sheet W1 sent from the first sheet unwinding section RO1 (see FIG. 1) to the first laminating section 10 is a laminate sheet S1 of the first and second laminating rollers 14a and 14b. At the position before reaching the nip portion, the first base sheet S1 is rolled up and peeled off by the peeling roller 12 in a state of being in contact with the roller surface of the first laminating roller 14a. The peeled first base sheet S1 is wound up by the first base sheet winding portion RI1 (see FIG. 1). The first sheet W1 from which the first base sheet S1 has been peeled is in contact with the roller surface of the first laminating roller 14a, and the first and second laminating rollers 14a and 14b along the roller surface. It is conveyed so as to be sandwiched by the nip part. On the other hand, the second sheet W2 fed from the second sheet unwinding section RO2 (see FIG. 1) to the first bonding section 10 is first and second bonded by the second bonding roller 14b. It is conveyed so that it may be pinched | interposed into the nip part of the alignment rollers 14a and 14b. At this time, the second sheet W2 is the nip portion of the first and second laminating rollers 14a and 14b, and the second catalyst electrode layer M3 of the second sheet W2 is the electrolyte membrane M1 of the first sheet W1. Are laminated so as to be in contact with each other, and are pressed and pressed by the second laminating roller 14b so as to be adhered to the peeled first sheet W1p.

  Here, as the first laminating roller 14a, it is preferable to use a suction roller that conveys the sheet while adsorbing the sheet by suction. Note that the intake range is normally set to be within a range of 10 to 15 degrees inside the contact start position and the contact end position with respect to the contact range of the sheet with respect to the roller surface. If the suction suction roller is used, the first base sheet S1 is peeled off in a state where the electrolyte membrane with the catalyst electrode layer, which is the first sheet W1, is adsorbed on the roller surface, and the second base sheet S1 is formed on the electrolyte membrane with catalyst electrode layer. The second catalyst electrode layer M3 of the sheet W2 can be bonded. Thereby, it is possible to suppress the occurrence of wrinkles and wrinkles on the electrolyte membrane due to peeling and conveyance. In addition, since the roller surface of the 1st bonding roller 14a will contact a catalyst electrode layer, in the case of a metal roller surface, surface treatment for preventing the influence on a catalyst electrode layer by contact. For example, it is preferable to apply chrome plating or the like.

  Moreover, it is preferable that the roller surface of a suction roller is formed with the porous body formed by sintering a carbon material etc. Using a porous material on the roller surface makes it possible to adsorb evenly, so it is more effective that the electrolyte membrane is crumpled and wrinkled by peeling and transporting compared to a normal structure with multiple pores. Can be suppressed. It is also possible to prevent the pore shape from being transferred to the conveyed sheet. Furthermore, when the conveyance speed is high with a normal structure, the sheet cannot be stably held on the roller surface due to the influence of the air layer caused by the air entrained between the roller surface and the sheet, and the sheet meanders. May be incurred. On the other hand, when a porous body is used, stable holding at high speed conveyance is possible. In addition, as described above, since the plurality of catalyst electrode layers M2p are formed at regular intervals in the first catalyst electrode layer M2 in contact with the roller surface, an air layer is formed between the plurality of catalyst electrode layers. Therefore, in the case of a normal structure, the holding force becomes weak, and similarly, stable holding cannot be performed, which may cause the sheet to meander. On the other hand, when a porous body is used, it is possible to increase the holding force, and stable holding is possible.

  As shown in FIG. 1, the third sheet W3 in a state where the first sheet W1p and the second sheet W2 in the peeled state in the first bonding unit 10 are bonded to each other from the first bonding unit 10. It is sent out to the joint part 20.

  The joining unit 20 includes first and second heating rollers 22a and 22b, a conveying roller 24, and a peeling roller 26 that form a joining roller pair. The third sheet W3 fed from the first laminating unit 10 comes into contact with the first heating roller 22a and is heated from the first catalyst electrode layer M2 side, and the first and second heating rollers. It is conveyed so as to be sandwiched between the nip portions 22a and 22b. The third sheet W3 sandwiched between the first and second heating rollers 22a and 22b is also heated and pressurized from the second catalyst electrode layer M3 side by the second heating roller 22b. The second catalyst electrode layer M3 is thermocompression bonded to the electrolyte membrane M1. Then, the fourth sheet W4 obtained by thermocompression bonding of the first sheet W1 and the second sheet W2 comes into contact with the transport roller 24 and is sent out toward the second laminating unit 30. The base sheet S2 is peeled off by the peeling roller 26. The peeled second base sheet S2 is wound up by the second base sheet winding portion RI2. As a result, the second catalyst electrode layer M3 is transferred to the electrolyte membrane M1, and the fifth sheet W5, which is a membrane electrode assembly in which the first and second catalyst electrode layers M2 and M3 are joined to the electrolyte membrane M1. Is formed and sent out to the second bonding unit 30 by the transport roller 24.

  The 2nd bonding part 30 is equipped with the 3rd and 4th bonding rollers 32a and 34a which comprise a bonding roller pair. The fifth sheet W5 that is a sheet of the membrane electrode assembly fed from the bonding unit 20 is sandwiched by the third bonding roller 32a at the nip between the third and fourth bonding rollers 32a and 32b. Be transported. Further, the carrier sheet S4 fed from the third sheet unwinding portion RO3 to the second laminating portion 30 is niped by the fourth laminating roller 32b between the third and fourth laminating rollers 32a and 32b. It is conveyed so that it may be pinched by the part. At this time, the carrier sheet S4 is overlaid on the fifth sheet W5 and is bonded so as to be in close contact with the fifth sheet W5 by being pressed and pressed by the fourth bonding roller 32b. . The sixth sheet W6 in a state where the carrier sheet S4 is bonded to the fifth sheet W5 is wound up by the sheet winding unit RI3. The carrier sheet (also referred to as “interleaf”) S4 is bonded to the fifth sheet W5 when the fifth sheet W5 is wound up in a roll shape by the sheet winding unit RI3. This is to prevent the M2 and the second catalyst electrode layer M3 from overlapping and adhering. As the carrier sheet S4, for example, a polymer film such as PET or PTFE (polytetrafluoroethylene) is used. In the third sheet unwinding section RO3, the carrier sheet S4 is unwound by setting the roll of the carrier sheet S4 wound in a roll shape.

  In the membrane electrode assembly manufacturing apparatus 100 described above, in the first laminating unit 10, the catalyst film-attached electrolyte membrane (first sheet W 1) with the first base sheet S 1 attached is first bonded. Since the first base sheet S1 is peeled off by the peeling roller 12 without heating the electrolyte membrane with the catalyst electrode layer in a state in which the contact with the alignment roller 14a is maintained, the heat shrinkage of the electrolyte membrane or the electrolyte membrane The deformation due to the generation of wrinkles can be suppressed. In addition, the second base sheet S2 is attached to the electrolyte membrane with the catalyst electrode layer (first sheet W1) without being heated by the first and second laminating rollers 14a and 14b. In a state where the catalyst electrode layer M2 (second sheet W2) is bonded, the catalyst electrode layer M2 is conveyed to the first and second heating rollers 22a and 22b of the joint portion 20, and heated by the first and second heating rollers 22a and 22b. Since the pressure is applied, the difference in thermal shrinkage between the joined electrolyte membrane and the second catalyst electrode layer is suppressed, and the distortion between the electrolyte membrane and the second catalyst electrode layer is suppressed. It is possible to suppress the occurrence of wrinkles in the electrolyte membrane and the warpage of the membrane electrode assembly.

  In addition, the structure of the 1st bonding part 10 abbreviate | omits the structure which peels 2nd base sheet S2 by the conveyance roller 24 and the peeling roller 26 of the junction part 20 of FIG. The structure in which the carrier sheet S4 is bonded by the third and fourth bonding rollers 32a and 34b can be applied as a structure in which the omitted peeling structure is combined.

  FIG. 3 is a schematic diagram showing a second bonding portion in which the peeling structure and the bonding structure are combined. This second laminating section 30A includes third and fourth laminating rollers 32a and 32b corresponding to the first and second laminating rollers 14a and 14b in FIG. 1, and a peeling roller 34. Yes. In the second bonding unit 30A, the second base sheet S2 is peeled off by the peeling roller 34 in a state where the fed fourth sheet W4 is in contact with the third bonding roller 32a. The peeled second base sheet S2 is wound up by the second base sheet winding portion RI2. The fifth sheet W5 from which the second base sheet S2 has been peeled is in contact with the third bonding roller 32a at the nip portion of the third and fourth bonding rollers 32a and 32b along the roller surface. It is conveyed so that it is pinched. Further, the carrier sheet S4 fed from the third sheet unwinding portion RO3 to the second laminating portion 30 is niped by the fourth laminating roller 32b between the third and fourth laminating rollers 32a and 32b. It is conveyed so that it may be pinched by the part. At this time, the carrier sheet S4 is overlaid on the fifth sheet W5 and is bonded so as to be in close contact with the fifth sheet W5 by being pressed and pressed by the fourth bonding roller 32b. . The sixth sheet W6 in a state where the carrier sheet S4 is bonded to the fifth sheet W5 is wound up by the sheet winding unit RI3.

  In addition, the structure of the first bonding portion 10 is that the sheet of membrane electrode assembly (sixth of the carrier sheet S4 is bonded) when the diffusion layer is bonded to the sheet of band-shaped membrane electrode assembly. It can be applied as a structure in which a diffusion layer is bonded to the sheet W6).

  FIG. 4 is a schematic view showing a diffusion layer bonding portion to which the structure of the first bonding portion is applied. The diffusion layer bonding portion includes a diffusion layer bonding portion 40 and a hot press machine 50.

  The diffusion layer bonding unit 40 includes a peeling roller 42 and fifth and sixth bonding rollers 44a and 44b corresponding to the first and second bonding rollers 14a and 14b in FIG. In the diffusion layer laminating portion 40, the carrier sheet S4 is peeled off by the peeling roller 42 in a state where the sixth sheet W6 fed from the fourth sheet unwinding portion RO4 is in contact with the fifth laminating roller 44a. The The fourth sheet unwinding section RO4 unwinds the sixth sheet W6 by setting the roll of the sixth sheet W6 wound in a roll shape by the sheet winding section RI3.

  The peeled carrier sheet S4 is wound up by the carrier sheet winding portion RI4. The fifth sheet W5 from which the carrier sheet S4 has been peeled is sandwiched between the nip portions of the fifth and sixth bonding rollers 44a and 44b along the roller surface while being in contact with the fifth bonding roller 44a. It is conveyed to. Further, the diffusion layer M5 sent from the fifth sheet unwinding portion RO5 to the diffusion layer laminating portion 40 is niped by the sixth laminating roller 44b between the fifth and sixth laminating rollers 44a and 44b. It is conveyed so as to be sandwiched between. At this time, the diffusion layer M5 is overlaid on the fifth sheet W5 and is bonded so as to be in close contact with the fifth sheet W5 by being pressed and pressed by the sixth bonding roller 44b. The seventh sheet W7 in a state where the diffusion layer M5 is bonded to the fifth sheet W5 is sent out to the hot press machine 50. Note that the diffusion layer M5 is unwound from the fifth sheet unwinding portion RO5 by setting the roll of the diffusion layer M5 wound in a roll shape.

  The hot press machine 50 sequentially heats and pressurizes the seventh sheet W7 in which the diffusion layer M5 is bonded to the fifth sheet W5 fed from the diffusion layer bonding unit 40, and the second catalyst electrode layer An eighth sheet W8, which is a membrane electrode diffusion layer assembly in which the diffusion layer M5 is bonded to the second catalyst electrode layer M3, is manufactured by thermocompression bonding the diffusion layer M5 to M3. The produced eighth sheet W8 is appropriately cut by a cutting device (not shown) to produce a membrane electrode diffusion layer assembly having a predetermined size.

B. Variation:
The present invention is not limited to the above-described examples and embodiments, and can be implemented in various modes without departing from the gist thereof. For example, the following modifications are possible.

  In the membrane electrode assembly manufacturing apparatus 100 of the above embodiment, a case where a catalyst electrode layer is applied on an electrolyte membrane and an electrolyte membrane (an electrolyte membrane with a catalyst electrode layer) on which the catalyst electrode layer is formed is used as an example. Although described, the present invention can also be applied to the production of the electrolyte membrane with a catalyst electrode layer.

DESCRIPTION OF SYMBOLS 10 ... 1st bonding part 12 ... Peeling roller 14a ... 1st bonding roller 14b ... 2nd bonding roller 20 ... Joining part 22a ... 1st heating roller 22b ... 2nd heating roller 24 ... Conveyance roller DESCRIPTION OF SYMBOLS 26 ... Peeling roller 30 ... 2nd bonding part 30A ... 2nd bonding part 32a ... 3rd bonding roller 32b ... 4th bonding roller 34 ... Peeling roller 40 ... Diffusion layer bonding part 42 ... Peeling Roller 44a ... 5th laminating roller 44b ... 6th laminating roller 50 ... Hot press machine 100 ... Membrane electrode assembly manufacturing apparatus R1 ... 1st sheet unwinding part W1 ... 1st sheet S1 ... 1st Base sheet M1 ... electrolyte membrane R2 ... second sheet unwinding portion W2 ... second sheet M2 ... first catalyst electrode layer S2 ... second base sheet M3 ... 2nd catalyst electrode layer R3 ... 1st base sheet winding part W3 ... 3rd sheet R4 ... 2nd base sheet winding part S4 ... Carrier sheet W4 ... 4th sheet W5 ... 5th sheet | seat R5 ... Third sheet unwinding section M5 ... Diffusion layer W6 ... Sixth sheet RI3 ... Sheet winding section W7 ... Seventh sheet R7 ... Fourth sheet unwinding section W8 ... Eighth sheet RI4 ... Carrier sheet Winding part R9 ... Fifth sheet unwinding part M2p ... Catalyst electrode layer

Claims (9)

An apparatus for manufacturing a membrane electrode assembly,
A strip-shaped laminate sheet in which an electrolyte membrane sheet is formed on a base sheet and a strip-shaped catalyst electrode layer sheet are fed, and the electrolyte membrane sheet and the catalyst electrode layer sheet of the fed laminate sheet are bonded to each other A matching section;
A heating unit that heats and pressurizes the bonded electrolyte membrane sheet and the catalyst electrode layer sheet to join the bonded electrolyte membrane sheet and the catalyst electrode layer sheet; and
The bonding part is
A peeling roller for peeling the base sheet from the laminate sheet;
First and second laminating rollers constituting a laminating roller pair for laminating the catalyst electrode layer sheet to the first surface of the electrolyte membrane sheet from which the base sheet has been peeled;
With
The peeling roller is a roller of the peeling roller in a state where the laminated sheet is in contact with the roller surface of the first laminating roller at a position before the laminated sheet reaches the nip portion of the laminating roller pair. Wrapping the base sheet along the surface and peeling the base sheet,
The first laminating roller is configured so that the second surface opposite to the first surface of the peeled electrolyte membrane sheet is in contact with the roller surface of the first laminating roller. In accordance with the rotation of the first laminating roller, the electrolyte membrane sheet is moved along the roller surface of the first laminating roller to the nip portion of the laminating roller pair,
The second laminating roller is configured to superimpose the fed catalyst electrode layer sheet on the first surface of the peeled electrolyte membrane sheet according to the rotation of the second laminating roller. Move to the nip part of the bonding roller pair,
The laminating roller pair presses the electrolyte membrane sheet and the catalyst electrode layer sheet superimposed at the nip portion without heating, so that the superimposed electrolyte membrane sheet and the catalyst electrode layer sheet are heated. An apparatus for manufacturing a membrane electrode assembly, characterized in that: The apparatus for producing a membrane / electrode assembly according to claim 1, wherein the first bonding roller is a suction roller that adsorbs the second surface of the electrolyte membrane sheet to a roller surface of the first bonding roller . An apparatus for manufacturing a membrane electrode assembly according to claim 1 or 2,
The electrolyte membrane sheet of the laminate sheet fed to the bonding portion is an electrolyte membrane sheet with a catalyst electrode layer in which a first catalyst electrode layer is formed on the second surface of the electrolyte membrane sheet,
The catalyst electrode layer sheet sent to the bonding part is formed with a second catalyst electrode layer bonded to the first surface of the electrolyte membrane sheet. A laminating apparatus for laminating and transporting a strip-shaped laminate sheet in which a first sheet is formed on a base sheet and a second sheet,
A peeling roller for peeling the base sheet from the laminate sheet;
First and second laminating rollers constituting a laminating roller pair for laminating the second sheet to the first surface of the first sheet from which the base sheet has been peeled;
With
The peeling roller is a roller of the peeling roller in a state where the laminated sheet is in contact with the roller surface of the first laminating roller at a position before the laminated sheet reaches the nip portion of the laminating roller pair. Wrapping the base sheet along the surface and peeling the base sheet,
The first laminating roller is in a state where the second surface opposite to the first surface of the peeled first sheet is in contact with the roller surface of the first laminating roller, The peeled first sheet is moved along the roller surface of the first laminating roller to the nip portion of the laminating roller pair according to the rotation of the first laminating roller,
The second laminating roller superimposes the fed second sheet on the first surface of the peeled first sheet according to the rotation of the second laminating roller. Move to the nip portion of the bonding roller pair,
The laminating roller pair pressurizes the first sheet and the second sheet superimposed at the nip portion without heating, thereby superimposing the first and second sheets superimposed on each other. A laminating apparatus characterized by laminating. The laminating apparatus according to claim 4, wherein the first laminating roller is a suction roller that adsorbs the second surface of the first sheet to a roller surface of the first laminating roller . The bonding apparatus according to claim 4 or 5, wherein:
The first sheet is an electrolyte membrane sheet composed of an electrolyte membrane,
The second sheet is a catalyst electrode layer sheet composed of a catalyst electrode layer. The bonding apparatus according to claim 4 or 5, wherein:
The first sheet is an electrolyte membrane sheet with a catalyst electrode layer in which a first catalyst electrode layer is formed on an electrolyte membrane sheet composed of an electrolyte membrane,
The second sheet is a catalyst electrode layer sheet composed of a second catalyst electrode layer. A method for producing a membrane electrode assembly, comprising:
A peeling roller for peeling the base sheet from a belt-like laminate sheet having an electrolyte membrane sheet formed on the base sheet, and a belt-like catalyst electrode layer on the first surface of the electrolyte membrane sheet from which the base sheet has been peeled A first and second bonding roller constituting a bonding roller pair for bonding the sheets, and a bonding unit for bonding the electrolyte membrane sheet and the catalyst electrode layer sheet of the laminate sheet When,
Heating and pressing the bonded electrolyte membrane sheet and the catalyst electrode layer sheet to bond the bonded electrolyte membrane sheet and the catalyst electrode layer sheet; and
With
In the bonding part,
In a state where the laminated sheet is in contact with the roller surface of the first laminating roller at a position before the fed laminated sheet reaches the nip portion of the laminating roller pair, on the roller surface of the peeling roller The base sheet is rolled in along and the base sheet is peeled off,
In a state where the second surface opposite to the first surface of the peeled electrolyte membrane sheet is in contact with the roller surface of the first laminating roller, the peeled electrolyte membrane sheet is According to the rotation of the laminating roller 1, moved to the nip portion of the laminating roller pair along the roller surface of the first laminating roller,
The fed catalyst electrode layer sheet is placed on the nip portion of the bonding roller pair so as to overlap the first surface of the peeled electrolyte membrane sheet according to the rotation of the second bonding roller. Move
By applying pressure to the electrolyte membrane sheet and the catalyst electrode layer sheet superimposed at the nip portion of the bonding roller pair without heating, the superimposed electrolyte membrane sheet and the catalyst electrode layer sheet are The manufacturing method of the membrane electrode assembly characterized by bonding. A laminating method for laminating and transporting a belt-like laminate sheet having a first sheet formed on a base sheet and a second sheet,
A peeling roller for peeling the base sheet from the laminate sheet;
First and second laminating rollers constituting a laminating roller pair for laminating the second sheet to the first surface of the first sheet from which the base sheet has been peeled;
With
In a state where the laminate sheet is in contact with the roller surface of the first laminating roller at a position before the laminate sheet reaches the nip portion of the laminating roller pair, along the roller surface of the peeling roller, Involve the base sheet to peel off the base sheet,
With the second surface opposite to the first surface of the peeled first sheet in contact with the roller surface of the first laminating roller, the peeled first sheet is In accordance with the rotation of the first laminating roller, it is moved to the nip portion of the laminating roller pair along the roller surface of the first laminating roller,
The nip portion of the pair of laminating rollers so as to superimpose the fed second sheet on the first surface of the peeled first sheet according to the rotation of the second laminating roller Move to
The superimposed first and second sheets are bonded together by applying pressure to the first sheet and the second sheet superimposed at the nip portion without heating. How to paste.

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