Asynchronous die-cutting process and printed product production line

Abstract

The application discloses an asynchronous die-cutting process and a printed product production line. The printing ink layers and color blocks are synchronized, so that the distance between the ink layers can be obtained through the distance between the color blocks. The distance between each group of adjacent color blocks before transfer is obtained, and then the transfer speed of the first conveying mechanism or the second conveying mechanism is regulated according to the above information, so as to control the distance between each group of adjacent composite sheets after transfer, so that the distance between the adjacent color blocks after transfer is consistent, so that the distance between each ink layer and the corresponding PET layer edge after the die-cutting composite sheet forms a printed product is the same, the position accuracy of the ink layer relative to the PET layer is ensured, and the product accuracy of the printed product is improved.

Description

Technical Field

[0001] This application relates to the field of die-cutting technology, and in particular to an asynchronous die-cutting process and a printing production line. Background Technology

[0002] In some cases, it is necessary to wrap or attach a printed material with content to the outside of the battery. This printed material includes a PET layer and an adhesive layer, with an ink layer printed on the PET layer. In related technologies, a die-cutting method is used for production. Specifically, a PET film with an ink layer, double-sided adhesive, and a backing film are laminated. To ensure a small tolerance between the ink layer and the edge of the PET layer, a set of positioning holes is punched on the backing film for each ink layer. The film is then fed to a flatbed die-cutting machine, which cuts the PET film and double-sided adhesive together to form multiple printed materials.

[0003] However, there is a problem with the printing position accuracy during the ink layer printing process, which leads to different distances between adjacent ink layers. Since the distance between the printed product formed by the die-cutting machine cutting the PET film and double-sided adhesive is fixed, the position accuracy of the ink layer on the PET layer will be poor. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes an asynchronous die-cutting process that can improve the product accuracy of printed materials.

[0005] This application also proposes a printing production line with the above-mentioned asynchronous die-cutting process.

[0006] An asynchronous die-cutting process according to a first aspect of this application is used to manufacture a printed article, the printed article comprising stacked PET layers and a double-sided adhesive layer, wherein an ink layer formed by printing is formed on the side of the PET layer away from the adhesive layer, the asynchronous die-cutting process comprising the following steps:

[0007] The base film is conveyed by the first conveying mechanism, and the release film is conveyed by the second conveying mechanism;

[0008] Multiple ink layers are printed on one side of a PET film. The ink layers are distributed along the conveying direction of the PET film, and a color block is printed simultaneously with each ink layer, such that the distance between two adjacent ink layers is equal to the distance between two adjacent color blocks.

[0009] The PET film, double-sided adhesive, and the backing film are combined, with the side of the PET film on which the ink layer is printed being away from the double-sided adhesive. The combined PET film and the double-sided adhesive are defined as a composite film.

[0010] The composite film is die-cut to cut it and separate adjacent ink layers and adjacent color blocks, wherein the cut composite film is divided into multiple composite sheets, each composite sheet having an ink layer and a color block respectively.

[0011] The composite sheet on the base film is transferred to the release film, and the distance between adjacent composite sheets is increased; wherein, before the transfer, the distance between two color blocks is obtained; the conveying speed of the first conveying mechanism or the second conveying mechanism is adjusted according to the distance between two adjacent color blocks, so that the distance between each group of two adjacent color blocks on the release film is the same after the transfer;

[0012] The composite sheet is die-cut according to the contours of the PET layer and the double-sided adhesive layer of the printed matter, and waste is removed to form the printed matter;

[0013] The release film is wound up.

[0014] The asynchronous die-cutting process according to the first aspect of this application has at least the following beneficial effects: Simultaneous printing of ink layers and color blocks allows the spacing between ink layers to be obtained through the spacing of the color blocks. Before transfer, the distance between each group of adjacent color blocks is obtained, and then the conveying speed of the first or second conveying mechanism is adjusted according to the above information to control the distance between each group of adjacent composite sheets after transfer. This ensures that the distance between adjacent color blocks after transfer is consistent, so that after the die-cut composite sheets form the printed product, the distance between each ink layer and the edge of its corresponding PET layer is the same, guaranteeing the accuracy of the ink layer's position relative to the PET layer and improving the product precision of the printed product.

[0015] According to some embodiments of this application, the distance between adjacent color blocks on the release film after transfer is preset to be z, and the distance between adjacent color blocks during printing is a, where z > a; the distance between adjacent composite sheets after transfer is b, and the distance b is adjusted by adjusting the transmission rate of the first conveying mechanism or the second conveying mechanism so that a + b = z.

[0016] According to some embodiments of this application, the spacing 'a' between adjacent color blocks is obtained by photoelectric sensor and fed back to the control system. The control system calculates 'b' using the values ​​of 'a' and 'z', and adjusts the transmission rate of the first conveying mechanism or the second conveying mechanism based on the calculated data 'b'.

[0017] According to some embodiments of this application, printing multiple ink layers on one side of the PET film includes the following steps:

[0018] The PET film is fed to a screen printing machine, and the printing content is printed on the PET film by the screen printing machine to form the ink layer on the PET film;

[0019] The printed PET film is then conveyed to the oven.

[0020] According to some embodiments of this application, the PET film has a matte and a glossy surface, and the ink layer is printed on the matte surface.

[0021] According to some embodiments of this application, the PET film is black.

[0022] According to some embodiments of this application, the color blocks are printed onto the edge position in the width direction of the PET film.

[0023] According to some embodiments of this application, the PET film printed with the ink layer is bonded to the double-sided adhesive after passing through a material alignment device.

[0024] According to some embodiments of this application, the two sides of the release film in the width direction are trimmed.

[0025] According to the second aspect of the present application, a printing production line produces the printed matter using the asynchronous die-cutting process of the first aspect.

[0026] The printing production line according to the second aspect of this application has at least the following beneficial effects: including all the beneficial effects of the asynchronous die-cutting process of the first aspect embodiment, which will not be repeated here.

[0027] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0028] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0029] Figure 1 A perspective view of printed matter produced by the asynchronous die-cutting process according to the first aspect of this application;

[0030] Figure 2 This is a schematic diagram illustrating the steps of printing ink layers and color blocks on a PET film according to this application.

[0031] Figure 3 This is a schematic diagram illustrating the steps of die-cutting the composite film described in this application;

[0032] Figure 4 This is a schematic diagram illustrating the steps of transferring the composite sheet from the base film to the release film in this application;

[0033] Figure 5 This is a schematic diagram illustrating the steps of die-cutting the composite sheet according to the contours of the PET layer and the double-sided adhesive layer of the printed material in this application;

[0034] Figure 6 This is a schematic diagram of the steps involved in die-cutting composite sheets and removing waste.

[0035] Figure label:

[0036] Printed material 100, PET layer 110, double-sided adhesive layer 120, ink layer 130;

[0037] PET film 300, color block 310;

[0038] Composite membrane 400, composite sheet 410;

[0039] Release film 500. Detailed Implementation

[0040] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0041] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0042] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0043] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0044] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] An asynchronous die-cutting process according to a first aspect embodiment of this application is used to manufacture a printed matter 100, see reference to Figure 1 The printed matter 100 includes a stacked PET layer 110 and a double-sided adhesive layer 120, wherein an ink layer 130 formed by printing is formed on the side of the PET layer 110 away from the adhesive layer. The asynchronous die-cutting process includes the following steps:

[0046] The base film 200 is conveyed by the first conveying mechanism, and the release film 500 is conveyed by the second conveying mechanism.

[0047] Multiple ink layers 130 are printed on one side of the PET film 300. The ink layers 130 are distributed along the conveying direction of the PET film 300, and a color block 310 is printed simultaneously with each ink layer 130, such that the distance between two adjacent ink layers 130 is equal to the distance between two adjacent color blocks 310. It can be understood that the content is printed onto the PET film 300 to form ink layers 130, as shown in the reference. Figure 2 Each time an ink layer 130 is formed, a color block 310 is formed on its side. Thus, the distance between two adjacent ink layers 130 is equal to the distance between their corresponding color blocks 310.

[0048] The composite PET film 300, double-sided adhesive, and backing film 200 are arranged together, with the side of the PET film 300 printed with ink layer 130 away from the double-sided adhesive. The composite PET film 300 and double-sided adhesive are defined as composite film 400 and composite sheet 410, respectively. It can be understood that the PET film 300 is adhered to the backing film 200 by the double-sided adhesive.

[0049] Die-cutting composite film 400 and composite sheet 410 to cut composite film 400 and composite sheet 410, and separating adjacent ink layers 130 and adjacent color blocks 310, wherein the cut composite film 400 and composite sheet 410 are separated into multiple composite sheets 410, each composite sheet 410 having a corresponding ink layer 130 and a color block 310; it can be understood that, referring to Figure 3The composite film 400 and composite sheet 410 are cut, with the cutting line falling between two adjacent ink layers 130 and also between two adjacent color blocks 310. Thus, the composite film 400 and composite sheet 410 are cut into multiple composite sheets 410. Each composite sheet 410 comprises a sheet of double-sided adhesive and a PET film 300, and each composite sheet 410 has an ink layer 130 and a color block 310.

[0050] The composite sheet 410 on the base film 200 is transferred to the release film 500, increasing the distance between adjacent composite sheets 410. Before transfer, the distance between two color blocks 310 is obtained. The conveying speed of the first or second conveying mechanism is adjusted according to the distance between adjacent color blocks 310, so that the distance between each group of adjacent color blocks 310 on the release film 500 is the same after transfer. It can be understood that by making the conveying speed of the first conveying mechanism lower than that of the second conveying mechanism, the distance between the composite sheets 410 is increased when they are transferred from the base film 200 to the release film 500. It should be noted that due to printing errors, the spacing between adjacent ink layers 130 may vary. Therefore, referring to... Figure 3 and Figure 4 Before reposting, the distance between two adjacent color blocks 310 in each group is obtained. The conveying speed of the first or second conveying mechanism is controlled based on the distance between adjacent color blocks 310 in each group. Figure 5 This controls the distance between each group of adjacent composite sheets 410, so that the distance between each group of adjacent color blocks 310 plus the distance between their corresponding composite sheets 410 is the same, even if the distance between each group of two adjacent color blocks 310 is the same, thus the distance between adjacent ink layers 130 is the same.

[0051] Based on the contour-cut composite sheet 410 of the PET layer 110 and double-sided adhesive layer 120 of the printed matter 100, waste is removed to form the printed matter 100; it can be understood that after transfer, by controlling the distance between each set of composite sheets 410 to ensure that the distance between each ink layer 130 is the same after transfer, thus, referring to Figure 6 After the die-cut composite sheet 410 forms the printed matter 100, it can ensure that the distance between each ink layer 130 and the edge of the PET layer 110 is consistent, that is, it ensures the positional accuracy of the ink layer 130 relative to the PET layer 110.

[0052] Release film 500 is wound up. It is understood that the release film 500 is used to protect the printed material 100 and facilitate handling.

[0053] In summary, the ink layer 130 and color blocks 310 are printed simultaneously, and the spacing between ink layers 130 can be obtained through the spacing of color blocks 310. Before transfer, the distance between each group of adjacent color blocks 310 is obtained, and then the conveying speed of the first or second conveying mechanism is adjusted according to the above information to control the distance between each group of adjacent composite sheets 410 after transfer. This ensures that the distance between adjacent color blocks 310 after transfer is consistent, so that after the die-cut composite sheet 410 forms the printed product 100, the distance between each ink layer 130 and the edge of its corresponding PET layer 110 is the same, ensuring the accuracy of the position of the ink layer 130 relative to the PET layer 110 and improving the product accuracy of the printed product 100.

[0054] According to some embodiments of this application, the distance between adjacent color blocks 310 on the release film 500 after transfer is preset to be z, and the distance between adjacent color blocks 310 during printing is a, where z > a; the distance between adjacent composite sheets 410 after transfer is b, and the distance b is adjusted by adjusting the transmission rate of the first conveying mechanism or the second conveying mechanism so that a + b = z.

[0055] It is understandable that the distance between adjacent color blocks 310 after transfer is preset to z, and the distance between adjacent color blocks 310 during printing is set to a. It should be understood that due to printing errors, the distance a between adjacent color blocks 310 may be different, for example a1, a2, a3. In order to allow the color blocks 310 to have a margin to be stretched, it is necessary to set a < z. After obtaining parameters such as a1, a2, a3, etc., the transmission rate of the first or second conveying mechanism is adjusted to adjust the distance b between two adjacent composite sheets 410 after transfer. Correspondingly, the distance b has b1, b2, b3, where a1 + b1 = a2 + b2 = a3 + b3 = z. Thus, the distance between adjacent color blocks 310 after transfer is the same, that is, the distance between adjacent ink layers 130 after transfer is the same.

[0056] It should be noted that the above a1, a2, a3 may not be limited to the four adjacent color blocks 310, but may be different distances a formed between any number of color blocks 310, and are not limited to only three sets of different sizes.

[0057] According to some embodiments of this application, the spacing 'a' between adjacent color blocks 310 is obtained by photoelectric sensor and fed back to the control system. The control system calculates 'b' using the values ​​of 'a' and 'z', and adjusts the transmission rate of the first or second conveying mechanism based on the calculated data 'b'.

[0058] According to some embodiments of this application, printing multiple ink layers 130 on one side of a PET film 300 includes the following steps:

[0059] The PET film 300 is fed to the screen printing machine, and the printing content is printed on the PET film 300 by the screen printing machine to form an ink layer 130 on the PET film 300.

[0060] The printed PET film 300 is then conveyed to the oven.

[0061] It is understandable that the above steps are used to prefabricate a PET film 300 with an ink layer 130.

[0062] According to some embodiments of this application, the PET film 300 has a matte and a glossy surface, on which an ink layer 130 is printed. It is understood that the matte surface improves adhesion to the printed ink.

[0063] According to some embodiments of this application, the PET film 300 is black.

[0064] According to some embodiments of this application, color blocks 310 are printed onto the edge positions in the width direction of the PET film 300. It will be understood that, referring to... Figure 2 and Figure 6 Printing color blocks 310 onto the edge of the PET film 300 in the width direction facilitates the separation of color blocks 310 and the corresponding PET layer 110 on the PET film 300, thus preventing color blocks 310 from falling onto the PET layer 110 and ensuring product quality.

[0065] According to some embodiments of this application, a PET film 300 printed with an ink layer 130 is bonded to double-sided adhesive after passing through a material alignment device. It is understood that the material alignment device improves the bonding accuracy between the PET film 300 and the double-sided adhesive.

[0066] According to some embodiments of this application, the two sides of the release film 500 in the width direction are trimmed.

[0067] According to the second aspect of the present application, a printing production line produces printed matter 100 using the asynchronous die-cutting process of the first aspect.

[0068] The printing production line according to the second aspect of this application has at least the following beneficial effects: including all the beneficial effects of the asynchronous die-cutting process of the first aspect embodiment, which will not be repeated here.

[0069] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. An asynchronous die-cutting process, characterized in that, For manufacturing a printed article comprising stacked PET layers and a double-sided adhesive layer, wherein an ink layer formed by printing is formed on the side of the PET layer away from the adhesive layer, the process includes the following steps: The base film is conveyed by the first conveying mechanism, and the release film is conveyed by the second conveying mechanism; Multiple ink layers are printed on one side of a PET film. The ink layers are distributed along the conveying direction of the PET film, and a color block is printed simultaneously with each ink layer, such that the distance between two adjacent ink layers is equal to the distance between two adjacent color blocks. The PET film, double-sided adhesive, and the backing film are combined, with the side of the PET film on which the ink layer is printed being away from the double-sided adhesive. The combined PET film and the double-sided adhesive are defined as a composite film. The composite film is die-cut to cut it and separate adjacent ink layers and adjacent color blocks, wherein the cut composite film is divided into multiple composite sheets, each composite sheet having an ink layer and a color block respectively. The composite sheet on the base film is transferred to the release film, and the distance between adjacent composite sheets is increased; wherein, before the transfer, the distance between two color blocks is obtained; the conveying speed of the first conveying mechanism or the second conveying mechanism is adjusted according to the distance between two adjacent color blocks, so that the distance between each group of two adjacent color blocks on the release film is the same after the transfer; The composite sheet is die-cut according to the contours of the PET layer and the double-sided adhesive layer of the printed matter, and waste is removed to form the printed matter; The release film is wound up.

2. The asynchronous die-cutting process according to claim 1, characterized in that, The distance between adjacent color blocks on the release film after transfer is set to z, and the distance between adjacent color blocks during printing is a, where z > a; the distance between adjacent composite sheets after transfer is b. The distance b is adjusted by adjusting the transmission rate of the first conveying mechanism or the second conveying mechanism so that a + b = z.

3. The asynchronous die-cutting process according to claim 2, characterized in that, The distance 'a' between adjacent color blocks is obtained by photoelectric sensors and fed back to the control system. The control system calculates 'b' using the values ​​of 'a' and 'z', and adjusts the transmission rate of the first or second conveying mechanism based on the calculated data 'b'.

4. The asynchronous die-cutting process according to claim 1, characterized in that, The process of printing multiple ink layers on one side of the PET film includes the following steps: The PET film is fed to a screen printing machine, and the printing content is printed on the PET film by the screen printing machine to form the ink layer on the PET film; The printed PET film is then conveyed to the oven.

5. The asynchronous die-cutting process according to claim 4, characterized in that, The PET film has a matte and a glossy surface, and the ink layer is printed on the matte surface.

6. The asynchronous die-cutting process according to claim 4, characterized in that, The PET film is black.

7. The asynchronous die-cutting process according to claim 1, characterized in that, The color blocks are printed onto the edge of the PET film in the width direction.

8. The asynchronous die-cutting process according to claim 1, characterized in that, The PET film printed with the ink layer is bonded to the double-sided adhesive after passing through a material alignment device.

9. The asynchronous die-cutting process according to claim 1, characterized in that, The release film is trimmed on both sides in the width direction.

10. A printing production line, characterized in that, The printed matter is produced by the asynchronous die-cutting process according to any one of claims 1 to 9.

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