Combination of circular die cutting and flat die cutting

Abstract

The present application relates to a combined process of circular knife die cutting and flat knife die cutting, which includes the following steps: unwinding a protective film, a first graphite film, a first double-sided adhesive tape, and a first release film in a circular knife device in sequence, laminating through a first roller body, discharging the first release film, and rolling cutting through a first circular knife to obtain a first semi-finished product, wherein the thickness of the protective film is 60um, the thickness of the first graphite film is 25um, the thickness of the first double-sided adhesive tape is 5um, and the thickness of the first release film is 25um. The technical solution in the embodiment of the present application processes the film material by adopting a processing method combining circular knife rolling cutting and flat knife punching. Since circular knife rolling cutting can handle more types of processing shapes and processing requirements, and flat knife punching has higher processing accuracy, it can ensure the yield rate of the processed finished product, so that the accuracy of the finished product is maintained within ±0.1 mm, and its processing cost is low, the processing process steps are simple, the product accuracy is high, and the processing efficiency is high.

Description

Technical Field

[0001] The present application relates to the technical field of die-cutting processing, and in particular to a combined process of circular knife die-cutting and flat knife die-cutting. Background Art

[0002] At present, the die-cutting industry has higher and higher requirements for product precision. The relevant technology uses flat knife die-cutting to die-cut products. Flat knife die-cutting products require the materials to be fitted, which takes a lot of time and has relatively low synchronization efficiency, making it impossible to efficiently produce large quantities of products. Summary of the invention

[0003] The present application provides a combined process of circular die cutting and flat die cutting to solve the problem in the background technology that flat die cutting is used to process products, which requires laminating materials, takes a lot of time, has relatively low synchronization efficiency, and cannot efficiently produce large quantities of products.

[0004] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide a combined process of circular die cutting and flat die cutting, wherein the combined process of circular die cutting and flat die cutting comprises the following steps:

[0005] The protective film, the first graphite film, the first double-sided adhesive tape, and the first release film are unwound in sequence in the circular knife device and pressed together by the first roller body;

[0006] Discharging the first release film;

[0007] The first semi-finished product is obtained by rolling cutting with a first circular knife, wherein the thickness of the protective film is 60um, the thickness of the first graphite film is 25um, the thickness of the first double-sided adhesive tape is 5um, and the thickness of the first release film is 25um.

[0008] By adopting the above technical solution, multiple film materials are pressed together by the first roller body. Since the circular knife cuts holes in the film material by rolling, the circular knife can adapt to punching of more types of vacancies, and punching by the circular knife improves the processing efficiency.

[0009] As an embodiment, the combined process of circular die cutting and flat die cutting further includes the following steps:

[0010] Unwinding the second graphite film, and pressing the second graphite film and the first semi-finished product together by a second roller;

[0011] Discharging the waste film on the second graphite film, wherein the thickness of the second graphite film is 17 um;

[0012] Unwinding a single-sided copper foil, and preferentially removing a self-contained film on the single-sided copper foil after unwinding the single-sided copper foil, wherein the thickness of the single-sided copper foil is 21 um;

[0013] Roll-cutting the single-sided copper foil by a second circular knife;

[0014] The single-sided copper foil rolled by the second circular knife enters the third roller body to straighten the single-sided copper foil;

[0015] The straightened single-sided copper foil enters under the third roller body, and the single-sided copper foil is pressed onto the second graphite film by the third roller body to obtain a second semi-finished product.

[0016] By adopting the above technical solution, after the single-sided aluminum foil is rolled and cut at the second circular knife, Rongguo's third roller undergoes a straightening process to facilitate the alignment of the film materials and prevent the film materials from shifting and affecting the accuracy of subsequent processing, thereby improving the overall processing quality and efficiency.

[0017] As an embodiment, the combined process of circular die cutting and flat die cutting further includes the following steps:

[0018] The second semi-finished product is rolled and cut by a third circular knife to obtain a third semi-finished product.

[0019] As an embodiment, the combined process of circular die cutting and flat die cutting further includes the following steps:

[0020] Unwinding the first bottom film, wherein one side of the first bottom film is affixed with a single-sided adhesive tape, the thickness of the first bottom film is 0.06 mm, and the thickness of the single-sided adhesive tape is 10 um;

[0021] Roll-cutting the first bottom film by a fourth circular knife;

[0022] The third semi-finished product enters the top of the fourth roller body, and the first bottom film after roll cutting is straightened by the fourth roller body;

[0023] The straightened first bottom film enters under the fourth roller body, and the first bottom film is pressed together with the third semi-finished product by the fourth roller body to obtain a fourth semi-finished product.

[0024] By adopting the above technical solution, through the arrangement of multiple rollers and circular knives, multiple film materials can be pressed together while rolling and cutting, so that multiple film materials can be laminated together and the film materials can be rolled and cut at the same time, thereby improving processing efficiency.

[0025] As an embodiment, the combined process of circular die cutting and flat die cutting further includes the following steps:

[0026] The fourth semi-finished product is rolled and cut by a fifth circular knife to obtain a fifth semi-finished product.

[0027] As an embodiment, the combined process of circular die cutting and flat die cutting further includes the following steps:

[0028] unwinding the sealing adhesive and removing waste from the fifth semi-finished product;

[0029] Unwinding a first matte film, the thickness of the first matte film is 25 um, a white adhesive tape and a first white grid film are pre-laminated on one side of the first matte film, the first matte film is rolled and cut by a first asynchronous circular knife, and at least a portion of the first matte film is cut and pressed onto the fifth semi-finished product to obtain a sixth semi-finished product;

[0030] The first matte film is scrapped and recovered.

[0031] By adopting the above technical scheme and setting the first asynchronous circular knife, since in actual product processing, usually only a part of the first matte film is needed, if the whole roll is unrolled for processing, a large amount of the first matte film will be wasted. Part of the first matte film can be cut off by the first asynchronous circular knife and subjected to lamination, rolling and other processing, and the remaining first matte film can be directly rolled up and recycled, thereby reducing the cost of processing consumables.

[0032] As an embodiment, the combined process of circular die cutting and flat die cutting further includes the following steps:

[0033] unwinding the second bottom film, one side of which is pre-laminated with a red film, straightening the second bottom film through a fifth roller, and the second bottom film enters the second asynchronous circular knife;

[0034] Unwinding a second matte film, the thickness of the second matte film is 25 um, a black adhesive tape and a second white grid film are pre-laminated on one side of the second matte film, the second matte film is cut by the second asynchronous circular knife, and at least a portion of the second matte film is cut, unrolled, and pressed onto the second base film;

[0035] After the second base film and the second matte film are pressed together, they enter above the seventh circular knife, are straightened by the seventh circular knife, and then enter below the seventh circular knife, are rolled and cut by the seventh circular knife, and the second matte film and the second base film are pressed together on the sixth semi-finished product to obtain the seventh semi-finished product.

[0036] By adopting the above technical solution, in which the blade height of the circular knife used in the above technical solution is 2 mm, when unwinding the second base film and the second matte film, it is necessary to straighten the second base film and the second matte film through multiple rollers and then perform rolling cutting to improve the processing accuracy.

[0037] As an embodiment, the combined process of circular die cutting and flat die cutting further includes the following steps:

[0038] Transmitting the seventh semi-finished product to a flat knife device and removing the second bottom film;

[0039] Unwinding a third matte film, wherein the thickness of the third matte film is 25 um;

[0040] Punching is performed by the first flat knife device to obtain an eighth semi-finished product;

[0041] The waste-removing adhesive paper is unrolled at the first flat knife device to remove waste generated by punching by the first flat knife device.

[0042] By adopting the above technical solution, compared with round knife processing, flat knife punching has higher precision. When the processing requirements can be met by both round knives and flat knives, the product yield can be improved by adopting flat knife processing.

[0043] As an embodiment, the combined process of circular die cutting and flat die cutting further includes the following steps:

[0044] unwinding a waste discharge film, and removing the outer frame waste remaining on the surface of the eighth semi-finished product through the waste discharge film;

[0045] Unwinding a transparent release film, wherein the thickness of the transparent release film is 75 um;

[0046] Turning over the eighth semi-finished product with the transparent release film attached thereto, and punching it through a second flat knife device to obtain a ninth semi-finished product;

[0047] The waste-removing adhesive paper is unrolled at the second flat knife device to remove waste generated by punching by the second flat knife device.

[0048] As an embodiment, the combined process of circular die cutting and flat die cutting further includes the following steps:

[0049] Carry out external frame waste discharge;

[0050] The ninth semi-finished product is sliced ​​by a slicer to obtain a finished product.

[0051] The beneficial effect of the present application is that the technical solution in the embodiment of the present application processes the film material by adopting a processing method that combines circular knife rolling cutting and flat knife punching. Since circular knife rolling cutting can handle more types of processing shapes and processing requirements, and flat knife punching has higher processing accuracy, it can ensure the yield rate of the finished product and keep the accuracy of the finished product within ±0.1 mm. The processing cost is low, the processing steps are simple, the product precision is high, and the processing efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0053] Figure 1 It is a schematic diagram of the process of processing to the fifth circular knife in the combined process of circular knife die cutting and flat knife die cutting provided in the embodiment of the present application;

[0054] Figure 2 It is a schematic diagram of the process from the fifth circular knife post-processing to the flat knife equipment in the combined process of circular knife die-cutting and flat knife die-cutting provided in the embodiment of the present application;

[0055] Figure 3 It is a schematic diagram of the process of processing on a flat knife device to a first flat knife device in a combined process of circular knife die cutting and flat knife die cutting provided in an embodiment of the present application;

[0056] Figure 4 It is a schematic diagram of the process of processing on a flat knife device to a second flat knife device in the combined process of circular knife die cutting and flat knife die cutting provided in an embodiment of the present application;

[0057] Figure 5 It is a schematic diagram of the process of processing from a flat knife device to a slicer in the combined process of circular knife die cutting and flat knife die cutting provided in an embodiment of the present application;

[0058] Figure 6 Schematic diagram of the waste discharge technology used in the combined process of circular die cutting and flat die cutting provided in the embodiment of the present application;

[0059] Description of reference numerals: 100, protective film; 110, first graphite film; 120, first double-sided adhesive tape; 130, first release film; 140, first roller body; 150, first circular knife; 160, second graphite film; 170, second roller body; 180, single-sided copper foil; 190, second circular knife; 200, third roller body; 210, third circular knife; 220, first bottom film; 230, fourth circular knife; 240, fourth roller body; 250, fifth circular knife; 26 0. Packing glue; 270. First matte film; 280. Second bottom film; 290. Second matte film; 300. First asynchronous circular knife; 310. Second asynchronous circular knife; 320. Sixth circular knife; 330. Seventh circular knife; 340. Third matte film; 350. First flat knife device; 360. Waste discharge film; 370. Transparent release film; 380. Second flat knife device; 390. Slicer; 400. Fixing rod; 410. Waste removal tape; 420. Waste trough. DETAILED DESCRIPTION

[0060] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0061] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), such directional indications are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0062] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0063] See also Figure 1-Figure 6 As shown, the present application provides a combined process of circular knife die cutting and flat knife die cutting, and the combined process of circular knife die cutting and flat knife die cutting includes the following steps: unwinding a protective film 100, a first graphite film 110, a first double-sided adhesive tape 120, and a first release film 130 in sequence in a circular knife device, pressing them together through a first roller body 140, discharging the first release film 130, and rolling and cutting them through a first circular knife 150 to obtain a first semi-finished product, wherein the thickness of the protective film 100 is 60um, the thickness of the first graphite film 110 is 25um, the thickness of the first double-sided adhesive tape 120 is 5um, and the thickness of the first release film 130 is 25u, and pressing a plurality of film materials through the first roller body 140, because the circular knife cuts and opens holes in the film material by rolling, the circular knife can adapt to punching of more types of vacancies, and punching by a circular knife improves the processing efficiency.

[0064] As an implementation method, the combined process of circular knife die cutting and flat knife die cutting also includes the following steps: unwinding the second graphite film 160, pressing the second graphite film 160 with the first semi-finished product through the second roller body 170, and removing the waste of the self-contained film on the second graphite film 160, wherein the thickness of the second graphite film 160 is 17um, unwinding the single-sided copper foil 180, and after unwinding the single-sided copper foil 180, the self-contained film on the single-sided copper foil 180 is preferentially removed, and the thickness of the single-sided copper foil 180 is 21um, and the single-sided copper foil 180 is rolled and cut by the second circular knife 190, and the second circular knife 190 is used to cut the single-sided copper foil 180. The single-sided copper foil 180 after rolling and cutting at 190 enters the top of the third roller body 200 to straighten the single-sided copper foil 180, and the straightened single-sided copper foil 180 enters the bottom of the third roller body 200, and the single-sided copper foil 180 is pressed onto the second graphite film 160 by the third roller body 200 to obtain a second semi-finished product. After the single-sided aluminum foil is roll-cut at the second circular knife 190, the Rongguo third roller body 200 performs a straightening process to facilitate the alignment of the film materials to prevent the film materials from shifting and affecting the accuracy of subsequent processing, thereby improving the overall processing quality and efficiency.

[0065] As an implementation manner, the combined process of circular knife die cutting and flat knife die cutting also includes the following steps: rolling the second semi-finished product by a third circular knife 210 to obtain a third semi-finished product; the combined process of circular knife die cutting and flat knife die cutting also includes the following steps: unwinding the first bottom film 220, one side of the first bottom film 220 is adhered with a single-sided adhesive tape, the thickness of the first bottom film 220 is 0.06 mm, and the thickness of the single-sided adhesive tape is 10 um; rolling the first bottom film 220 by a fourth circular knife 230; the third semi-finished product enters above the fourth roller body 240; the first bottom film 220 after rolling is straightened by the fourth roller body 240; the straightened first bottom film 220 enters below the fourth roller body 240; the first bottom film 220 is pressed together with the third semi-finished product by the fourth roller body 240 to obtain a fourth semi-finished product; by setting a plurality of roller bodies and circular knives, a plurality of film materials can be pressed together while rolling cutting is performed, so that the plurality of film materials can be laminated together and the film materials can be rolled and cut at the same time, thereby improving the processing efficiency.

[0066] As an embodiment, the combined process of circular die cutting and flat knife die cutting also includes the following steps: rolling the fourth semi-finished product by a fifth circular knife 250 to obtain a fifth semi-finished product. The combined process of circular die cutting and flat knife die cutting also includes the following steps: unwinding the sealing glue 260, removing the waste on the fifth semi-finished product, unwinding the first matte film 270, the thickness of the first matte film 270 is 25um, and one side of the first matte film 270 is pre-laminated with white adhesive tape and the first white grid film, rolling the first matte film 270 by a first asynchronous circular knife 300, and cutting at least a portion of the first matte film 270 and pressing it onto the fifth semi-finished product to obtain a sixth semi-finished product, performing waste treatment and recovering the remaining first matte film 270.

[0067] Through the setting of the first asynchronous circular knife 300, since in actual product processing, usually only a part of the first matte film 270 is needed, if the whole roll is unrolled for processing, a large amount of the first matte film 270 will be wasted. Part of the first matte film 270 can be cut off by the first asynchronous circular knife 300 and subjected to lamination, rolling and other processing, and the remaining first matte film 270 can be directly rolled up and recycled, thereby reducing the cost of processing consumables.

[0068] As an embodiment, the combined process of circular knife die cutting and flat knife die cutting also includes the following steps: unwinding the second bottom film 280, one side of the second bottom film 280 is pre-laminated with a red film, straightening the second bottom film 280 by a fifth roller, the second bottom film 280 enters the second asynchronous circular knife 310, unwinding the second matte film 290, the thickness of the second matte film 290 is 25um, one side of the second matte film 290 is pre-laminated with a black adhesive tape and a second white film, and passing through the second The asynchronous circular knife 310 rolls and cuts the second matte film 290, cuts at least a portion of the second matte film 290, unwinds and presses it onto the second base film 280. After the second base film 280 and the second matte film 290 are pressed together, they enter above the seventh circular knife 330, are straightened by the seventh circular knife 330, and then enter below the seventh circular knife 330. The second matte film 290 and the second base film 280 are rolled and pressed together onto the sixth semi-finished product by the seventh circular knife 330 to obtain the seventh semi-finished product.

[0069] The blade height of the circular knife used in the above technical solution is 2 mm. When unwinding the second bottom film 280 and the second matte film 290, the second bottom film 280 and the second matte film 290 need to be straightened by multiple rollers and then rolled to improve the processing accuracy.

[0070] As an embodiment, the combined process of circular knife die-cutting and flat knife die-cutting also includes the following steps: transferring the seventh semi-finished product to the flat knife device, and removing the second bottom film 280, unwinding the third matte film 340, the thickness of the third matte film 340 is 25um, and punching is performed by the first flat knife device 350 to obtain the eighth semi-finished product, unwinding the waste adhesive paper at the first flat knife device 350, and removing the waste generated by the punching of the first flat knife device 350. Compared with circular knife processing, flat knife punching has higher precision. When the processing requirements of both circular knife and flat knife can be met, the yield rate of the product is improved by adopting flat knife processing.

[0071] As an embodiment, the combined process of circular die cutting and flat knife die cutting also includes the following steps: unwinding a waste discharge film 360, removing the outer frame waste remaining on the surface of the eighth semi-finished product through the waste discharge film 360, unwinding a transparent release film 370, the thickness of the transparent release film 370 is 75um, flipping the eighth semi-finished product with the transparent release film 370, and punching through a second flat knife device 380 to obtain a ninth semi-finished product, unwinding the waste removal tape at the second flat knife device 380, and removing the waste generated by the punching of the second flat knife device 380.

[0072] As an implementation mode, the combined process of circular die cutting and flat die cutting further includes the following steps: performing outer frame waste removal, slicing the ninth semi-finished product by a slicer 390 to obtain a finished product.

[0073] The waste removal technology used in the punching process in the above technical solution is specifically to install the cutting die into the punching device, and a fixed rod 400 is provided on the punching device, and a waste removal tape 410 is rolled up on the fixed rod 400, and the waste removal tape 410 on the fixed rod 400 is pulled open and passed through the waste groove 420 below the cutting die, and the cutting die is punched, and the waste generated during the punching process of the cutting die falls into the waste groove 420, and the waste removal tape 410 is continuously pulled out of the waste groove 420 manually or the device drives the non-tape to move, so that the waste removal tape 410 takes out the waste in the waste groove 420, so as to prevent the waste in the waste groove 420 from accumulating and affecting the punching.

[0074] To sum up, the technical solution in the embodiment of the present application processes the film material by adopting a processing method that combines circular knife rolling cutting and flat knife punching. Since circular knife rolling cutting can handle more types of processing shapes and processing requirements, and flat knife punching has higher processing accuracy, it can ensure the yield rate of the finished product and keep the accuracy of the finished product within ±0.1 mm. The processing cost is low, the processing steps are simple, the product precision is high, and the processing efficiency is high.

[0075] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A combined process of circular die cutting and flat die cutting, characterized in that: The combined process of circular die cutting and flat die cutting comprises the following steps: The protective film (100), the first graphite film (110), the first double-sided adhesive tape (120), and the first release film (130) are unrolled in sequence in a circular knife device and pressed together by a first roller (140); Discarding the first release film (130); Rolling and cutting with a first circular knife (150) to obtain a first semi-finished product, wherein the thickness of the protective film (100) is 60 um, the thickness of the first graphite film (110) is 25 um, the thickness of the first double-sided adhesive tape (120) is 5 um, and the thickness of the first release film (130) is 25 um; unwinding the second graphite film (160), and pressing the second graphite film (160) and the first semi-finished product together by a second roller (170); Discharging the waste film on the second graphite film (160), wherein the thickness of the second graphite film (160) is 17 um; Unwinding a single-sided copper foil (180), and after unwinding the single-sided copper foil (180), preferentially removing a self-contained film on the single-sided copper foil (180), wherein the thickness of the single-sided copper foil (180) is 21 um; Roll-cutting the single-sided copper foil (180) using a second circular knife (190); The single-sided copper foil (180) that has been rolled and cut by the second circular knife (190) enters the third roller body (200) to straighten the single-sided copper foil (180); The straightened single-sided copper foil (180) enters below the third roller body (200), and the single-sided copper foil (180) is pressed onto the second graphite film (160) by the third roller body (200), thereby obtaining a second semi-finished product; The second semi-finished product is rolled and cut by a third circular knife (210) to obtain a third semi-finished product.

2. The combined process of circular die cutting and flat die cutting according to claim 1 is characterized in that: The combined process of circular die cutting and flat die cutting also includes the following steps: Unwinding the first bottom film (220), wherein one side of the first bottom film (220) is adhered with a single-sided adhesive tape, the thickness of the first bottom film (220) is 0.06 mm, and the thickness of the single-sided adhesive tape is 10 um; Roll-cutting the first bottom film (220) by a fourth circular knife (230); The third semi-finished product enters above the fourth roller body (240), and the first bottom film (220) after roll cutting is straightened by the fourth roller body (240); The straightened first bottom film (220) enters below the fourth roller body (240), and the first bottom film (220) is pressed together with the third semi-finished product via the fourth roller body (240) to obtain a fourth semi-finished product.

3. The combined process of circular die cutting and flat die cutting according to claim 2 is characterized in that: The combined process of circular die cutting and flat die cutting also includes the following steps: The fourth semi-finished product is rolled and cut by a fifth circular knife (250) to obtain a fifth semi-finished product.

4. The combined process of circular die cutting and flat die cutting according to claim 3 is characterized in that: The combined process of circular die cutting and flat die cutting also includes the following steps: Unwinding the sealing adhesive (260) to remove waste from the fifth semi-finished product; Unwinding a first matte film (270), wherein the thickness of the first matte film (270) is 25 μm, and one side of the first matte film (270) is pre-laminated with white adhesive tape and a first white grid film, rolling and cutting the first matte film (270) with a first asynchronous circular knife (300), and cutting and laminating at least a portion of the first matte film (270) onto the fifth semi-finished product, thereby obtaining a sixth semi-finished product; The first matte film (270) is scrapped and recovered.

5. The combined process of circular die cutting and flat die cutting according to claim 4 is characterized in that: The combined process of circular die cutting and flat die cutting also includes the following steps: unwinding a second bottom film (280), one side of the second bottom film (280) being pre-laminated with a red film, straightening the second bottom film (280) by a fifth roller, and the second bottom film (280) entering a second asynchronous circular knife (310); Unwinding a second matte film (290), wherein the thickness of the second matte film (290) is 25 um, and a black adhesive tape and a second white grid film are pre-laminated on one side of the second matte film (290); rolling and cutting the second matte film (290) by the second asynchronous circular knife (310); and cutting at least a portion of the second matte film (290), unwinding the film, and laminating the film on the second backing film (280); After the second bottom film (280) and the second matte film (290) are pressed together, they enter above the seventh circular knife (330) and are straightened by the seventh circular knife (330). Then, they enter below the seventh circular knife (330) and are rolled and cut by the seventh circular knife (330). The second matte film (290) and the second bottom film (280) are pressed together on the sixth semi-finished product to obtain the seventh semi-finished product.

6. The combined process of circular die cutting and flat die cutting according to claim 5 is characterized in that: The combined process of circular die cutting and flat die cutting also includes the following steps: Transmitting the seventh semi-finished product to a flat knife device, and removing the second bottom film (280); Unwinding the third matte film (340), wherein the thickness of the third matte film (340) is 25 um; Punching is performed by the first flat knife device (350) to obtain an eighth semi-finished product; The waste adhesive paper is unwound at the first flat knife device (350) to remove waste generated by punching of the first flat knife device (350).

7. The combined process of circular die cutting and flat die cutting according to claim 6, characterized in that: The combined process of circular die cutting and flat die cutting also includes the following steps: unwinding a waste discharge film (360), and removing the outer frame waste remaining on the surface of the eighth semi-finished product through the waste discharge film (360); Unwinding a transparent release film (370), wherein the thickness of the transparent release film (370) is 75 μm; Turning over the eighth semi-finished product to which the transparent release film (370) is attached, and punching it through the second flat knife device (380) to obtain a ninth semi-finished product; The waste-removing adhesive paper is unrolled at the second flat knife device (380) to remove waste generated by punching by the second flat knife device (380).

8. The combined process of circular die cutting and flat die cutting according to claim 7 is characterized in that: The combined process of circular die cutting and flat die cutting also includes the following steps: Carry out external frame waste discharge; The ninth semi-finished product is sliced ​​by a slicer (390) to obtain a finished product.

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