Die cutting system for flexible materials

Abstract

The present application relates to a die cutting system for flexible materials, the die cutting system comprising: a knife roll (100) having a knife roll body (5) and at least one knife (1) removably mounted in the knife roll body (5); and a backup roller (200) having a backup roller body (8) and at least one anvil pad (6) removably mounted in the backup roller body (8) wherein the die cutting system is configured such that during operation each of the at least one cutter (1) is able to interact with one of the at least one anvil pad (6) to effect cutting of the flexible material. Therefore, a single abraded cutter or a single abraded anvil pad can be simply, conveniently, locally and timely replaced, the replacement and maintenance cost of the roller is greatly reduced, and the cutting accuracy is always ensured. And meanwhile, the cutter and the anvil pad can be reinforced, and the cutting performance of the die cutting system is improved in a mode of replacing the whole by the local part.

Description

Technical Field

[0001] This application relates to a die-cutting system for flexible materials, and in particular a die-cutting system for manufacturing membrane electrode assemblies for fuel cells. Background Technology

[0002] Currently, conventional die-cutting systems with integrated molds are commonly used to cut flexible materials for manufacturing membrane electrode assemblies (MEAs) in fuel cells. The mold includes a cutter roller and a support roller. The cutter roller, primarily composed of a roller body equipped with die-cutting blades, works in conjunction with the support roller to cut the flexible material supplied between the cutter roller and the support roller. Existing cutter rollers and support rollers are typically integral rollers made of common tool steel, for example, produced using electroslag remelting processes. However, this integral roller design suffers from drawbacks such as short blade life, high replacement costs and long replacement cycles, the need for complete replacement after a single blade breaks, difficulty in standardizing blade height, and the requirement for overall heat treatment of the roller body. Therefore, it is necessary to propose an improved solution. Utility Model Content

[0003] The purpose of this application is to provide an improved die-cutting system for flexible materials in order to solve at least one of the above-mentioned technical problems and other unmentioned technical problems.

[0004] According to a first aspect of this application, a die-cutting system for flexible materials is provided, comprising: a cutter roller having a cutter roller body and at least one cutter removably mounted in the cutter roller body; and a support roller having a support roller body and at least one anvil removably mounted in the support roller body, wherein the die-cutting system is configured such that during operation, each of the at least one cutter is capable of interacting with one of the at least one anvils to cut the flexible material.

[0005] According to an alternative embodiment of this application, the cutting tool has a greater hardness at least at the tip than the body of the cutting roller.

[0006] According to an alternative embodiment of this application, the anvil has a greater hardness than the support roller body, at least on its outer surface.

[0007] According to an optional embodiment of this application, the cutter roller further comprises: a height adjustment device adapted to adjust the height of the cutter relative to the circumferential surface of the cutter roller body; and a cutter fastening device adapted to fasten the cutter to the cutter roller body, wherein the height adjustment device acts directly on the cutter or acts on the cutter through the cutter fastening device.

[0008] According to an optional embodiment of this application, the tool fastening device includes: a first part connected to the tool roller body via a first connecting structure; and a second part connected to the first part via a second connecting structure, wherein the first part and the second part together fix the tool in the middle.

[0009] According to an alternative embodiment of this application, the height adjustment device acts on the first portion to push the cutter outward relative to the circumferential surface of the cutter roller body.

[0010] According to an alternative embodiment of this application, the height adjustment device is held in the protrusion of the cutter roller body.

[0011] According to an alternative embodiment of this application, the height adjustment device has an inclined surface, and the height adjustment device is configured such that the cutter can be pushed by the inclined surface and moved along the inclined surface to move the cutter outward relative to the circumferential surface of the cutter roller body.

[0012] According to an alternative embodiment of this application, the height adjustment device extends inward from the circumferential surface of the cutter roller body to contact the bottom of the cutter.

[0013] According to an optional embodiment of this application, the height adjustment device is an adjustment bolt.

[0014] According to an optional embodiment of this application, the cutter roller has a plurality of height adjustment devices and a plurality of cutter fastening devices that are equally spaced along its axial direction.

[0015] According to an optional embodiment of this application, the height adjustment device and the tool fastening device are located on the same side of the respective tool.

[0016] According to an optional embodiment of this application, the tip of the cutting tool has a cone angle of 55±5° and a width of 0.03±0.01mm.

[0017] According to an optional embodiment of this application, the number of anvils is an integer multiple of the number of knives.

[0018] According to an alternative embodiment of this application, the cutting tool is made of cemented carbide using a powder metallurgy process.

[0019] According to an alternative embodiment of this application, the cutting tool has a coating made by a physical vapor deposition process at least at the tip, with a thickness ranging from 5 μm to 25 μm.

[0020] According to an alternative embodiment of this application, the anvil is made of cemented carbide by a powder metallurgy process.

[0021] According to an alternative embodiment of this application, the anvil has a coating made by a physical vapor deposition process at least on its surface, with a thickness ranging from 5 μm to 25 μm.

[0022] According to an optional embodiment of this application, the flexible material is used to manufacture the membrane electrode assembly of a fuel cell.

[0023] According to the die-cutting system of this application, by designing both the cutter of the cutter roller and the anvil of the support roller to be detachable, it is possible to replace the cutter and the anvil individually, and to adjust the height of the cutter and the anvil individually. Therefore, the high cost of replacing the whole unit can be avoided, and higher die-cutting accuracy can be achieved for various flexible materials.

[0024] It is worth noting that the advantages and beneficial effects of this application are not limited to those mentioned above. Those skilled in the art can understand other advantages and beneficial effects not mentioned in this application through the following detailed embodiments and claims. Attached Figure Description

[0025] The principles, features, and advantages of this application will be better understood below with reference to the accompanying drawings. In the drawings:

[0026] Figure 1 A schematic perspective view of an exemplary die-cutting system according to this application is shown;

[0027] Figure 2 A schematic front view of an exemplary die-cutting system according to this application is shown;

[0028] Figure 3 A schematic cross-sectional view of an exemplary cutter roller according to this application is shown;

[0029] Figure 4 A schematic front view of a portion of an exemplary cutter roller according to this application is shown;

[0030] Figure 5 A schematic cross-sectional view of an exemplary support roller according to this application is shown;

[0031] Figure 6 A schematic front view of another exemplary cutter roller according to this application is shown;

[0032] Figure 7 It shows Figure 5 A schematic side view of the cutter roller in the middle;

[0033] Figure 8 A schematic partial enlarged view of an exemplary cutter roller according to this application is shown; and

[0034] Figure 9A schematic enlarged view of the cutting edge of an exemplary cutter roller according to this application is shown.

[0035] List of reference numerals

[0036] 100 cutter rollers

[0037] 1. Cutting tool

[0038] 11. Knife tip

[0039] 2. Height adjustment device

[0040] 3. Tool fastening device

[0041] 31 Part One

[0042] 32 Part Two

[0043] 33 First connection structure

[0044] 34 Second connection structure

[0045] 5. Main body of the cutter roller

[0046] 51. Circumferential surface of the cutter roller body

[0047] 52. Protrusion

[0048] 200 support rollers

[0049] 6. Cutting mat

[0050] 7. Anvil fastening device

[0051] 8. Support roller body

[0052] 81. Circumferential surface of the support roller body

[0053] 300 Flexible Materials Detailed Implementation

[0054] To make the technical problems, technical solutions, and beneficial technical effects to be solved by this application clearer, the following will provide a more detailed description of this application in conjunction with the accompanying drawings and several exemplary embodiments. It should be understood that the specific embodiments described herein are only for explaining the principles of this application and are not intended to limit the scope of protection of this application. In the various drawings of this application, features with the same structure or function are indicated by the same reference numerals. The drawings are not drawn strictly to scale but are exaggerated for clarity.

[0055] This application relates to a die-cutting system for flexible materials. Figure 1 and Figure 2 A schematic diagram of an exemplary die-cutting system according to this application is shown. Figure 1As shown, the die-cutting system includes a cutter roller 100 and a support roller 200. When the die-cutting system is running, the cutter roller 100 and the support roller 200 can rotate in opposite directions to deliver a flexible material 300 (such as...) between them. Figure 2 (As shown) is conveyed along the conveying direction, and cutting is achieved during conveying by the cooperation between the cutter 1 of the cutter roller 100 and the support roller 200.

[0056] Figure 3 A schematic cross-sectional view of an exemplary cutter roller 100 according to this application is shown. Figure 4 A schematic front view of a portion of an exemplary cutter roller 100 according to this application is shown. Figure 3 and Figure 4 As shown, the cutter roller 100 may have a cutter roller body 5 and at least one cutter 1 detachably mounted in the cutter roller body 5. The tip of the cutter 1 may protrude from the circumferential surface 51 of the cutter roller 100 to engage with the support roller 200.

[0057] Figure 5 A schematic cross-sectional view of an exemplary support roller 200 according to this application is shown. Figure 5 As shown, the support roller 200 has a support roller body 8 and at least one anvil 6 detachably mounted in the support roller body 8.

[0058] The die-cutting system can be configured such that during operation, each of the at least one cutter 1 can interact with one of the at least one anvil 6 to cut the flexible material. Thus, the interaction between the cutter 1 and the anvil 6 ensures that the flexible material is subjected to uniform force during cutting, guaranteeing the flatness and smoothness of the cut edge, thereby improving cutting quality. This is particularly advantageous for performing full-cut processes on flexible materials with high hardness or thickness. In this document, the flexible material can be used, in particular, in the manufacture of membrane electrode assemblies for fuel cells.

[0059] Therefore, the embodiments of this application adopt an advantageous separate component solution, which allows the corresponding cutter or anvil to be replaced individually when a single cutter or anvil reaches the end of its service life or needs to be replaced due to wear, without having to replace the cutter roller body or support roller body, thereby significantly reducing the cost of the die-cutting system.

[0060] exist Figure 3 In the illustrated embodiment, the cutter roller 100 has three cutters 1, and each cutter 1 is arranged at equal intervals in the circumferential direction C of the cutter roller 100, i.e., the included angle between the positions of adjacent cutters 1 is approximately 120°. Here, the number of cutters 1 in the cutter roller 100 can be related to the diameter of the cutter roller 100 and can be an integer multiple of the width of the pattern to be processed in the flexible material. Figure 5In the illustrated embodiment, the support roller 200 has three anvils 6, the same number as the number of blades 1 in the cutter roller 100. Similar to the blades 1, the anvils 6 are arranged at equal intervals in the circumferential direction C of the support roller 200, i.e., the angle between adjacent anvils 6 is approximately 120°. Furthermore, in other embodiments, the number of anvils 6 in the support roller 200 may be greater than the number of blades 1 in the cutter roller 100 and is an integer multiple of the number of blades.

[0061] During the operation of the die-cutting system, the rotational speed of the cutter roller 100 and the support roller 200 can be controlled by an electrical controller through gear transmission, so that the rotational speed of the cutter roller 100 and the rotational speed of the support roller 200 are matched, so that each cutter 1 can interact with an anvil 6 to cut the flexible material.

[0062] Preferably, to improve the service life of the blade 1 and the anvil 6, the blade 1 may preferably have a greater hardness than the blade roller body 5 at least at the blade tip 11, and the anvil 6 may preferably have a greater hardness than the support roller body 8 at least on its outer surface. For example, preferably, the blade 1 has a wear-resistant structure in the portion where it interacts with the anvil 6, and the anvil 6 has the same wear-resistant structure in the portion where it interacts with the blade 1. Having approximately the same hardness in the interacting portions of the blade 1 and the anvil 6 allows the flexible material to be subjected to more uniform force during cutting, thereby suppressing or avoiding burrs on the cutting edge, ensuring the flatness and smoothness of the cutting edge, and improving cutting quality.

[0063] Furthermore, the cutter roller body 5 of the cutter roller 100 and the anvil 6 of the support roller 200 can both be made of tool steel. The cutter 1 can be made of cemented carbide using powder metallurgy, and the anvil 6 can also be made of cemented carbide using powder metallurgy. In particular, the cutter 1 and the anvil 6 can be made of the same material. Compared to conventional cutters and anvils made of tool steel, cutters 1 and anvils 6 made of cemented carbide can have improved hardness and strength. Here, the cemented carbide can be tungsten carbide. For example, the hardness of tool steel, after heat treatment (e.g., quenching), can reach up to 62 HRC, but the hardness of cemented carbide can reach 70 HRC or higher.

[0064] Preferably, a coating can be applied to the surfaces of the tool 1 and anvil 6, both made of tool steel, as a wear-resistant structure. This coating is preferably formed by physical vapor deposition (PVD) and has a thickness ranging from 5 μm to 25 μm, for example, 10 μm. This further improves the hardness and wear resistance of the tool 1 and anvil 6. The tool 1 and anvil 6, made of the same material, achieve good mechanical fit.

[0065] To fix tool 1, such as Figure 3As shown, the cutter roller 100 may also have a height adjustment device 2, which is suitable for adjusting the height of the cutter 1 relative to the circumferential surface 51 of the cutter roller body 5, that is, the height by which the tip / end of the cutter 1 protrudes from the circumferential surface 51 along the radial direction R of the cutter roller body 5 (e.g., Figure 8 The height of the cutter 1 (h) shown below can be simply referred to as the height of the cutter 1. Therefore, the height of each cutter 1 can be easily, flexibly, and precisely set or adjusted individually using the height adjustment device 2, thus achieving uniformity in cutter height and facilitating precise cutting of flexible materials. Furthermore, it allows the production of products of different sizes using the same die-cutting system.

[0066] Optionally, the height adjustment device 2 may have an inclined surface, and the height adjustment device 2 may be configured such that the cutter 1 can be pushed by the inclined surface and moved along the inclined surface to move the cutter 1 outward relative to the circumferential surface of the cutter roller body 5.

[0067] Specifically, the height adjustment device 2 can act directly on the cutter 1. For example, the height adjustment device 2 can be implemented as an adjustment bolt, the end of which can act on the bottom of the cutter 1 opposite to the blade tip 11, thereby using the end of the adjustment bolt to lift the bottom of the cutter 1 to adjust the height of the cutter 1. The adjustment bolt itself has a bevel at the end, so the adjustment bolt as the height adjustment device 2 can directly contact and act on the cutter 1, eliminating the need for a separate intermediate component (e.g., a separate wedge) for transmitting force, making the structure of the cutter roller 100 simple and the cutter height adjustment convenient. It also allows a single cutter roller body 5 to be adapted to cutters 1 of different specifications. When replacing the cutter 1, the cutter fastening device 3 can be loosened to remove the old cutter 1, then the new cutter 1 can be inserted into the groove in the cutter roller body 5, the height of the new cutter 1 can be adjusted by the height adjustment device 2, and then the cutter 1 can be fastened by the cutter fastening device 3.

[0068] Preferably, such as Figure 3 and Figure 4 As shown, the height adjustment device 2 extends inward from the circumferential surface 51 of the cutter roller body 5 to contact the bottom of the cutter 1. This allows the user to easily operate the height adjustment device 2 to adjust the height of the cutter 1.

[0069] In addition, such as Figure 3 and Figure 4 As shown, the cutter roller 100 may also have a cutter fastening device 3 suitable for fastening the cutter 1 to the cutter roller body 5. The cutter 1 can be stably fixed by the cutter fastening device 3. Exemplarily, the cutter fastening device 3 can be implemented as a locking screw. The cutter fastening device 3 can directly contact the side of the cutter 1 to achieve fixation.

[0070] exist Figure 4In the illustrated embodiment, the cutter roller 100 has a plurality of height adjustment devices 2 and a plurality of cutter fastening devices 3 evenly distributed along its axial direction X. For example, the cutter roller 100 may have a plurality of cutters 1, and for each cutter 1, a corresponding individual height adjustment device 2 and cutter fastening device 3 are provided, so that each cutter 1 can be individually fixed and height adjusted, improving the flexibility of adjustment and replacement. The plurality of cutters 1 may be arranged in a line along the axial direction X of the cutter roller 100. In one possible embodiment, the cutter roller 100 may also have a single cutter 1 extending linearly along the axial direction X of the cutter roller body 5 on its circumferential surface 51, and a plurality of height adjustment devices 2 and a plurality of cutter fastening devices 3 are provided for different positions of the single cutter 1. In this case, the cutter 1 may be formed in an elongated shape. Preferably, the height adjustment device 2 and cutter fastening device 3 corresponding to the same cutter 1 may be located on the same side of the corresponding cutter 1, thereby facilitating user operation.

[0071] Alternatively, in a further developed embodiment according to this application, the height adjustment device 2 can be applied to the tool 1 by means of the tool fastening device 3. Figure 6 and Figure 7 An embodiment is shown. As shown, the cutter fastening device 3 may include a first part 31 and a second part 32, wherein the first part 31 is connected to the cutter roller body 5 via a first connecting structure 33, and the second part 32 is connected to the first part 31 via a second connecting structure 34, and the first part 31 and the second part 32 together fix the cutter 1 in the middle. The height adjustment device 2 may be held in the protrusion 52 of the cutter roller body 5. The height adjustment device 2 may be specifically an adjusting bolt. The first connecting structure 33 and the second connecting structure 34 may be specifically locking screws. When it is necessary to adjust the height of the cutter 1, the first connecting structure 33 may be loosened first to release the connection between the first part 31 and the cutter roller body 5. At this time, the first part 31 and the second part 32 are kept connected via the second connecting structure 34, and then... Figure 7 The black arrow indicates the direction of the height adjustment device 2. The height adjustment device 2 acts on the first part 31, causing the first part 31 and the second part 32 to move the cutter 1 outward relative to the circumferential surface 51 of the cutter roller body 5, as indicated by the black arrow, under the push of the height adjustment device 2, thereby changing the height of the cutter 1. In this embodiment, more stable fixing and height adjustment of the cutter 1 can be achieved. When it is necessary to replace the cutter 1, the second connecting structure 34 can be loosened to disconnect the connection between the first part 31 and the second part 32 to remove the cutter 1. The second part 32 can specifically press the cutter 1 against the first part 31.

[0072] In some embodiments, such as Figure 9As shown, the cone angle α of the cutting tip 11 of the tool 1 can be 55±5°, and the width w can be 0.03±0.01mm. In the prior art, the cone angle is usually about 45°, and it is generally considered that a larger cone angle is disadvantageous due to insufficient cutting force. However, in this embodiment of the present application, a larger cone angle is used compared to the prior art, while a smaller width is used to compensate, so that the tool 1 has improved cutting performance.

[0073] To secure the anvil 6, as Figure 5 As shown, the support roller 200 also includes an anvil fastening device 7 suitable for securing the anvil 6. Exemplarily, the anvil fastening device 7 can be implemented as a locking screw. In one embodiment, the support roller body 8 may have a groove on its circumferential surface 81 for receiving the anvil 6. An anvil block made of cemented carbide can be placed into the groove, and the anvil block and the groove can be shaped to fit substantially against each other. The anvil block is then fastened using the anvil fastening device 7, and the support roller body 8 with the anvil block is then subjected to a circumferential grinding process so that the exposed outer surface of the anvil block and the circumferential surface 81 of the support roller body 8 together form a complete cylindrical surface. The anvil fastening device 7 is then loosened and the treated anvil block is removed. A physical vapor deposition process is then performed on the treated surface of the anvil block to prepare a wear-resistant coating. Finally, the coated anvil block can be reinstalled as the anvil block 6 back into the groove of the support roller body 8 and fastened by the anvil fastening device 7.

[0074] Preferably, on the circumferential surface 81 of the support roller body 8, each anvil 6 can be spaced apart from each other and occupy only a small local area of ​​the circumferential surface 81. This allows for the provision of harder anvils 6 only in a small local area, making the manufacture, use, and replacement of the anvils 6 and the support roller 200 cost-effective. Exemplarily, the width of the exposed outer surface of the anvil 6 can be approximately, for example, 2 mm. Similar to the blade 1, in some embodiments, multiple anvils 6 can be arranged in a line along the axial direction of the support roller 200 on the circumferential surface of the support roller, and a separate anvil fastening device 7 is provided for each anvil 6. In one possible embodiment, the support roller 200 can have a single anvil 6 extending linearly along the axial direction X of the support roller body 8 on its circumferential surface 81, and multiple anvil fastening devices 7 are provided at different positions of this single anvil 6. In this case, the anvil 6 can be formed in an elongated shape.

[0075] According to certain embodiments of this application, by using separable cutter and cutter roller bodies, as well as separable anvil and support roller bodies, individual worn cutters or individual worn anvils can be replaced simply, conveniently, locally, and promptly, significantly reducing roller replacement and maintenance costs while ensuring cutting accuracy at all times. Furthermore, since the cutter and anvil are separable from their respective bodies, only the cutter and anvil need heat treatment and coating, without requiring overall structural reinforcement of the roller body. This improves the cutting performance of the die-cutting system through a "partial replacement of the whole" approach. Additionally, the cutter and anvil can be made of different materials, providing favorable conditions for low-cost yet precise manufacturing of the cutter roller and support roller. Therefore, the die-cutting system according to this application is particularly suitable for high-precision die-cutting processes.

[0076] It is worth noting that in this document, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance, nor should they be construed as implicitly specifying the number of technical features indicated. Features specified as "first" or "second" may explicitly or implicitly indicate that at least one of those features is included.

[0077] It should also be noted that in the description of the embodiments, the use of terms such as "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer" to indicate the orientation or positional relationship of the constituent elements with reference to the accompanying drawings is only for the convenience of describing this specification and simplifying the description, and is not intended to indicate or imply that the device or element referred to has a specific orientation, or is constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0078] Without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those different embodiments or examples. Various substitutions, modifications, and alterations can be conceived without departing from the spirit and scope of this application.

Claims

1. A die-cutting system for flexible materials, characterized in that, The die-cutting system includes: A cutter roller (100) having a cutter roller body (5) and at least one cutter (1) detachably mounted in the cutter roller body (5); and A support roller (200) having a support roller body (8) and at least one anvil (6) detachably mounted in the support roller body (8). The die-cutting system is configured such that during operation, each of the at least one cutter (1) can interact with one of the at least one anvils (6) to cut the flexible material.

2. The die-cutting system for flexible materials according to claim 1, characterized in that, The cutting tool (1) has a greater hardness at least at the tip (11) than the body of the cutting roller (5); and / or The anvil (6) has a greater hardness than the support roller body (8) at least on its outer surface.

3. The die-cutting system for flexible materials according to claim 1 or 2, characterized in that, The cutter roller (100) also has: Height adjustment device (2), adapted to adjust the height of the cutter (1) relative to the circumferential surface of the cutter roller body (5); and A tool fastening device (3) adapted to fasten the tool (1) to the tool roller body (5). The height adjustment device (2) acts directly on the cutter (1) or through the cutter fastening device (3) on the cutter (1).

4. The die-cutting system for flexible materials according to claim 3, characterized in that, The tool fastening device (3) includes: The first part (31) is connected to the cutter roller body (5) via a first connecting structure (33); The second part (32) is connected to the first part (31) via a second connection structure (34). The first part (31) and the second part (32) together fix the cutting tool (1) in the middle.

5. The die-cutting system for flexible materials according to claim 4, characterized in that, The height adjustment device (2) acts on the first part (31) to push the cutter (1) outward relative to the circumferential surface of the cutter roller body (5); and / or The height adjustment device (2) is held in the protrusion (52) of the cutter roller body (5).

6. The die-cutting system for flexible materials according to claim 3, characterized in that, The height adjustment device (2) has an inclined surface, and the height adjustment device (2) is configured such that the cutter (1) can be pushed by the inclined surface and moved along the inclined surface to move the cutter (1) outward relative to the circumferential surface of the cutter roller body (5); and / or The height adjustment device (2) extends inward from the circumferential surface of the cutter roller body (5) and contacts the bottom of the cutter (1).

7. The die-cutting system for flexible materials according to claim 3, characterized in that, The height adjustment device (2) is an adjusting bolt; and / or The cutter roller (100) has a plurality of height adjustment devices (2) and a plurality of cutter fastening devices (3) evenly distributed along its axial direction (X); and / or The height adjustment device (2) and the tool fastening device (3) corresponding to the same tool (1) are located on the same side of the corresponding tool (1).

8. The die-cutting system for flexible materials according to any one of claims 1, 2, 4-7, characterized in that, The tip (11) of the cutting tool (1) has a cone angle (α) of 55±5° and a width (w) of 0.03±0.01 mm; and / or The number of the anvils (6) is an integer multiple of the number of the knives (1).

9. The die-cutting system for flexible materials according to claim 2, characterized in that, The cutting tool (1) is made of cemented carbide by powder metallurgy; and / or The cutting tool (1) has a coating, formed by physical vapor deposition, at least at the tip (11), with a thickness ranging from 5 μm to 25 μm; and / or The anvil (6) is made of hard alloy by powder metallurgy; and / or The anvil (6) has a coating made by physical vapor deposition process at least on its surface, with a thickness in the range of 5 μm to 25 μm.

10. The die-cutting system for flexible materials according to any one of claims 1, 2, 4-7, and 9, characterized in that, The flexible material is used to manufacture the membrane electrode assembly for fuel cells.

Images