Preparation method and pasting method of automatic exhaust die-cutting product and die-cutting product
By forming grid-like grooves on the adhesive layer of die-cut products, the automatic exhaust function is realized, and the quality problems and production rhythm optimization requirements of small-sized display modules are solved, and the application efficiency and quality are improved.
Patent Information
- Application Number
- CN202510003518.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-04-11
AI Technical Summary
When applying small-size display modules, existing die-cut products are prone to quality problems such as dropping, starting point bubbles, and patch shifting, and traditional patching methods cannot meet the optimization needs of production beats.
By forming a grid-shaped groove pattern on the adhesive layer of the die-cut product, the adhesive layer is bonded to the release film by extruding the die-cutting roller to form a die-cut product with automatic exhaust function. During the pasting process, the product is automatically exhausted through grooved lines to achieve a better fit.
The quality problem during the small-size display module is solved, the automatic exhaust function is realized, the patch efficiency and quality is improved, and the production beat optimization needs are met.
Smart Images
Figure CN119799177A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of die-cutting technology, and in particular to a preparation method, an application method and a die-cutting product of an automatic exhaust die-cutting product. Background Art
[0002] At present, there are many demands for various types of die-cutting products in the field of display modules. Among them, with the development of display technology, hard-screen AMOLED has gradually replaced TFT-LCD in smart wearables, mobile phones, industry, and automotive industries, and has been used more. Hard-screen AMOLED has the advantages of rich display colors, lower power consumption, and thinner weight; at the same time, there are characteristics (disadvantages) such as the glass substrate that constitutes the module being hard and brittle. Therefore, in order to improve the module's reliability performance such as resistance to falling and rolling, the protection design of the AMOLED module needs to be done well for modules that use AMOLED display technology. Usually, materials such as foam, PET, and single-sided adhesive with buffering protection functions are attached to the back (non-display surface) of the AMOLED display module.
[0003] With the application of wearable products, the application of display modules including AMOLED has been expanded. However, wearable products are small in size, and the products to be applied are small in size. The traditional application method is roller application, such as Figure 1 As shown in the method, the object to be applied 101 is fixed by an inclined fixed platform 102, and the application roller 103 rolls from one end of the object to be applied 101 to complete the application to the application module 104. Figure 2 As shown, it includes a substrate 201, an adhesive layer 202 and a release film 203 (or a base film). When applying small-sized display module products, especially small-sized display module products such as wearables, existing die-cut products are prone to quality problems such as chip drop, starting point bubbles, and patch shifting; and special small roller application equipment needs to be developed or used, and the application cycle is slow, which cannot meet the needs of increasingly optimized production cycles. Summary of the invention
[0004] In order to at least solve the above-mentioned technical problems, the purpose of the present application is to provide a preparation method, an application method and a die-cutting product of an automatic exhaust die-cutting product, which effectively solves the problems of easy chip falling, starting point bubbles and chip displacement of existing die-cutting products when dealing with small-size display module products.
[0005] In order to achieve the above-mentioned object, the present application provides, on one hand, a method for preparing an automatic exhaust die-cutting product, comprising:
[0006] Providing a substrate;
[0007] Providing an adhesive layer, wherein the adhesive layer is disposed on one side of the substrate;
[0008] Providing a release film, wherein a first surface of the release film is formed with a grid groove;
[0009] The other side of the substrate is extruded by a die-cutting roller to adhere the adhesive layer to the first side of the release film, and then the grid grooves on the release film are reversely printed on the adhesive layer to form grid-like groove patterns on the adhesive layer.
[0010] Furthermore, a plurality of bumps are formed between the groove patterns on the adhesive layer, and each of the bumps is in a diamond or rectangular shape.
[0011] Furthermore, the width of the groove pattern on the adhesive layer is 0.10 to 1.50 mm.
[0012] Furthermore, the spacing between the groove patterns on the adhesive layer is 1.00 to 5.00 mm.
[0013] Furthermore, the width of the groove patterns on the adhesive layer is equal to or smaller than the spacing between them.
[0014] Furthermore, the depth of the groove pattern on the adhesive layer is 0.10 to 0.50 mm.
[0015] Furthermore, the release force of the release film is smaller than the adhesive force between the adhesive layer and the substrate.
[0016] On the other hand, the present application also provides a method for applying an automatic exhaust die-cut product, comprising:
[0017] Providing a die-cut product obtained by the method for preparing the automatic exhaust die-cut product as described above;
[0018] Fixing the die-cut product on a first laminating platform;
[0019] Fixing the attached display module on the second attaching platform, and the attached display module is opposite to the die-cut product;
[0020] tearing off the release film on the die-cut product to expose the adhesive layer on the die-cut product;
[0021] The extrusion starts from one end of the first laminating platform and the second laminating platform, and the angle between the first laminating platform and the second laminating platform is gradually reduced until the adhesive layer on the die-cut product is completely laminarized on the laminar display module.
[0022] On the other hand, the present application also provides a method for applying an automatic exhaust die-cut product, comprising:
[0023] Providing a die-cut product obtained by the method for preparing the automatic exhaust die-cut product as described above;
[0024] Fixing the die-cut product on a first laminating platform;
[0025] Fixing the attached display module on the second attaching platform, and the attached display module is opposite to the die-cut product;
[0026] tearing off the release film on the die-cut product to expose the adhesive layer on the die-cut product;
[0027] The first laminating platform and the second laminating platform are pressed in parallel to gradually reduce the distance between the first laminating platform and the second laminating platform until the adhesive layer on the die-cut product is completely laminarized on the laminar display module.
[0028] On the other hand, the present application also provides a die-cut product, which is made using the preparation method of the automatic exhaust die-cut product as described above.
[0029] The method for preparing an automatically exhausting die-cut product of an embodiment of the present application includes: providing a substrate; providing an adhesive layer, the adhesive layer being arranged on one surface of the substrate; providing a release film, the release film having a first surface formed with a grid groove; extruding the other surface of the substrate by a die-cutting roller, bonding the adhesive layer to the first surface of the release film, and then reverse-printing the grid groove on the release film onto the adhesive layer, forming a grid-like groove pattern on the adhesive layer. By forming a grid-like groove pattern on the adhesive layer, the die-cut product can automatically exhaust gas through these groove patterns during the application process when it is used, and under the bonding pressure, the squeezed adhesive flows to fill the groove. Even for small-sized products to be bonded, automatic exhaust can be achieved, and better quality bonding can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:
[0031] Figure 1 It is a schematic diagram of the application method of the existing die-cut product;
[0032] Figure 2 It is a schematic diagram of the existing die-cutting product structure;
[0033] Figure 3 It is a schematic diagram of the process of preparing the automatic exhaust die-cutting product of the embodiment of the present application;
[0034] Figure 4 is a schematic cross-sectional view of a release film according to an embodiment of the present application;
[0035] Figure 5Schematic diagram of the bonding of the release film and the adhesive layer in the embodiment of the present application;
[0036] Figure 6 is a flow chart of a method for applying an automatic exhaust die-cut product according to an embodiment of the present application;
[0037] Figure 7 This is a schematic diagram of angled application according to an embodiment of the present application;
[0038] Figure 8 It is a schematic diagram of parallel application of an embodiment of the present application. DETAILED DESCRIPTION
[0039] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes and are not intended to limit the scope of protection of the present application.
[0040] It should be understood that the various steps described in the method implementation of the present application can be performed in different orders and / or performed in parallel. In addition, the method implementation may include additional steps and / or omit the steps shown. The scope of the present application is not limited in this respect.
[0041] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.
[0042] It should be noted that the modifications of "one" and "plurality" mentioned in this application are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more". "Plurality" should be understood as two or more.
[0043] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.
[0044] An embodiment of the present application provides a method for preparing an automatic exhaust die-cutting product, comprising: providing a substrate; providing an adhesive layer, the adhesive layer being arranged on one surface of the substrate; providing a release film, the release film having a first surface with a grid groove formed thereon; extruding the other surface of the substrate by a die-cutting roller, laminating the adhesive layer with the first surface of the release film, and then reverse-printing the grid groove on the release film onto the adhesive layer, thereby forming a grid-like groove pattern on the adhesive layer.
[0045] Example 1
[0046] Figure 3 is a schematic flow chart of a method for preparing an automatic exhaust die-cut product according to an embodiment of the present application, Figure 4 is a schematic cross-sectional view of a release film according to an embodiment of the present application, Figure 5 Schematic diagram of the bonding of the release film and the adhesive layer in the embodiment of the present application. Figures 3 to 5 , the preparation method of the automatic exhaust die-cutting product of the embodiment of the present application is described in detail.
[0047] First, in step 301 , a substrate 501 is provided.
[0048] In step 302, an adhesive layer is provided. The adhesive layer has stickiness and is disposed on one or both sides of the substrate 501. In this embodiment, the adhesive layer is disposed on one side of the substrate 501 as an example.
[0049] In an exemplary embodiment, the adhesive layer is formed of an adhesive and is coated on one side of the substrate 501 .
[0050] In an exemplary embodiment, the thickness of the adhesive layer is smaller than the thickness of the substrate 501 .
[0051] Step 303, providing a release film 503. A plurality of grid grooves are formed on one side of the release film 503, such as Figure 4 As shown, protrusions 402 are formed between the grooves 401 .
[0052] In an exemplary embodiment, the width of the groove 401 is greater than or equal to the width of the protrusion 402, so that after the grid groove on the release film 503 is reversely printed onto the adhesive layer, the width of the protrusion in the grid pattern formed on the adhesive layer is greater than or equal to the width of the groove pattern, that is, the width of the solid protrusion on the adhesive layer is greater than the width of the groove, so that the shape of the protrusion is not easily destroyed in the process of tearing off the release film 303, so that the grooves between the protrusions remain connected.
[0053] Step 304, laminating the release film 503 and the adhesive layer together. Figure 5As shown, the other side of the substrate 501 is extruded by the die-cutting roller 501, so that the adhesive layer on the substrate 501 is fitted with the side of the release film 503 with the grid grooves, and then the grid grooves on the release film 503 are reversely printed on the adhesive layer, forming a grid-like groove pattern on the adhesive layer.
[0054] In an exemplary embodiment, the groove pattern formed on the adhesive layer includes horizontal and vertical stripe grooves, that is, the angle between the stripe grooves is 90°.
[0055] In an exemplary embodiment, the angles between the cross grooves formed on the adhesive layer are between 45° and 90°.
[0056] In an exemplary embodiment, a plurality of bumps are formed between the grooves on the adhesive layer, each of which is a rhombus or a rectangle (a rectangle is used as an example in this embodiment). It is not difficult to understand that the size and shape of these bumps depend on the size and shape of the grooves on the release film 503.
[0057] In an exemplary embodiment, the width of the grooves on the adhesive layer is 0.10-1.50 mm, preferably 0.30 mm.
[0058] In an exemplary embodiment, the spacing between the grooves on the adhesive layer is 1.00-5.00 mm, preferably 2.00 mm.
[0059] In an exemplary embodiment, the width of the grooves on the adhesive layer is equal to or smaller than the spacing between the grooves (ie, the width of the bumps).
[0060] In an exemplary embodiment, the depth of the grooves on the adhesive layer is 0.10-0.50 mm, preferably 0.15 mm.
[0061] In an exemplary embodiment, the release force of the release film 503 is smaller than the adhesive force between the adhesive layer and the substrate 501 .
[0062] The method for preparing the automatic exhaust die-cut product provided in this embodiment has a grid-like groove pattern formed on the adhesive layer. When used, the automatic exhaust die-cut product can automatically exhaust gas through the groove pattern during the application process, and the adhesive layer is squeezed under the bonding pressure to make the adhesive flow, thereby filling the groove. Even for small-sized products to be bonded, automatic exhaust can be achieved, achieving better quality bonding.
[0063] Example 2
[0064] The embodiment of the present application also provides a method for applying an automatic exhaust die-cut product, and the applied object is the die-cut product obtained in the embodiment of the preparation method of the automatic exhaust die-cut product.
[0065] The method for applying the automatic exhaust die-cut product of the embodiment of the present application is particularly suitable for applying small-sized objects to be applied (such as small-sized display modules).
[0066] Figure 6 This is a flow chart of the method for applying the automatic exhaust die-cutting product of the embodiment of the present application. Figure 7 This is a schematic diagram of the angled application of the embodiment of the present application, and the following will refer to Figure 6 and Figure 7 , the application method of the automatic exhaust die-cutting product of the embodiment of the present application is described in detail.
[0067] First, in step 601, a die-cut product 701 is provided and fixed on a first laminating platform 702. The die-cut product 701 includes a substrate, an adhesive layer and a release film, and the adhesive layer and the release film form grid grooves corresponding to the laminating.
[0068] In step 602, the attached display module 703 is fixed on the second attaching platform 704. The attached display module 703 and the die-cut product 701 are opposite to each other.
[0069] In an exemplary embodiment, the die-cut product 701 is manufactured in advance to have the same shape and size as the application area of the display module 702 to be applied.
[0070] In step 603 , the release film on the die-cut product 701 is torn off to expose the adhesive layer on the die-cut product 701 .
[0071] In step 604 , extrusion is started from one end of the first laminating platform 702 and the second laminating platform 704 , and the angle between the first laminating platform 702 and the second laminating platform 704 is gradually reduced until the adhesive layer on the die-cut product 701 is completely laminated on the display module 703 .
[0072] Since the adhesive layer of the die-cut product 701 has a grid-like groove pattern, when performing the laminating operation, it is not necessary to use a roller laminating method, and a flat-to-flat-plate laminating method can be directly performed, which is fast and accurate. The so-called bubbles in the adhesive layer on the die-cut product 701 will flow out through the groove pattern, achieving high-quality lamination.
[0073] In an exemplary embodiment, the grid groove pattern has a certain setting performance. Under certain temperature, humidity and time conditions, the groove grid pattern will not disappear due to the flow of the adhesive layer. The usable temperature range is less than 35°C; the usable humidity range is less than 95%; the setting time can be maintained within 12 months; the recommended temperature, humidity and time range are: 25±5°C, 55±15%, and the time is 6 months.
[0074] Example 3
[0075] The present application also provides a method for attaching a die-cut product with automatic exhaust, which differs from the second embodiment in that the distance between the first attaching platform and the second attaching platform is gradually reduced by extruding the first attaching platform and the second attaching platform in parallel, until the adhesive layer on the die-cut product is completely attached to the attached display module. Figure 8 shown.
[0076] Example 4
[0077] Example 4 is a die-cut product. The die-cut product of the embodiment of the present application is made by the preparation method of the automatic exhaust die-cut product of the above-mentioned Example 1.
[0078] In an exemplary embodiment, the automatic exhaust die-cut product of the embodiment of the present application includes a display module for attaching a small size.
[0079] The automatic exhaust die-cutting product of the embodiment of the present application solves the quality problems of existing die-cutting products such as sheet falling, starting point bubbles, and sheet shifting that often occur when dealing with small-sized objects to be pasted, as well as the need to develop or use special small roller pasting equipment, the slow pasting cycle, and the inability to meet the increasingly optimized production cycle requirements.
[0080] Although the embodiments disclosed in the present invention are as above, the contents are only embodiments adopted to facilitate understanding of the present invention and are not intended to limit the present invention. Any technician in the field to which the present invention belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the present invention, but the patent protection scope of the present invention shall still be subject to the scope defined in the attached claims.
Claims
1. A method for preparing an automatic exhaust die-cut product, characterized in that: include: Providing a substrate; Providing an adhesive layer, wherein the adhesive layer is disposed on one side of the substrate; Providing a release film, wherein a first surface of the release film is formed with a grid groove; The other side of the substrate is extruded by a die-cutting roller to adhere the adhesive layer to the first side of the release film, and then the grid grooves on the release film are reversely printed on the adhesive layer to form grid-like groove patterns on the adhesive layer.
2. The method for preparing the automatic exhaust die-cutting product according to claim 1, characterized in that: A plurality of protrusions are formed between the groove patterns on the adhesive layer, and each of the protrusions is in a diamond or rectangular shape.
3. The method for preparing the automatic exhaust die-cut product according to claim 1, characterized in that: The width of the groove pattern on the adhesive layer is 0.10-1.50 mm.
4. The method for preparing the automatic exhaust die-cut product according to claim 1, characterized in that: The spacing between the grooves on the adhesive layer is 1.00 to 5.00 mm.
5. The method for preparing the automatic exhaust die-cut product according to claim 1, characterized in that: The width of the groove patterns on the adhesive layer is equal to or smaller than the spacing between them.
6. The method for preparing the automatic exhaust die-cut product according to claim 1, characterized in that: The depth of the groove pattern on the adhesive layer is 0.10-0.50 mm.
7. The method for preparing the automatic exhaust die-cut product according to claim 1, characterized in that: The release force of the release film is smaller than the adhesive force between the adhesive layer and the substrate.
8. A method for applying an automatic exhaust die-cut product, characterized in that: include: Providing a die-cut product obtained by the method for preparing the automatic exhaust die-cut product according to any one of claims 1 to 7; Fixing the die-cut product on a first laminating platform; Fixing the attached display module on the second attaching platform, and the attached display module is opposite to the die-cut product; tearing off the release film on the die-cut product to expose the adhesive layer on the die-cut product; The extrusion starts from one end of the first laminating platform and the second laminating platform, and the angle between the first laminating platform and the second laminating platform is gradually reduced until the adhesive layer on the die-cut product is completely laminarized on the laminar display module.
9. A method for applying an automatic exhaust die-cut product, characterized in that: include: Providing a die-cut product obtained by the method for preparing the automatic exhaust die-cut product according to any one of claims 1 to 7; Fixing the die-cut product on a first laminating platform; Fixing the attached display module on the second attaching platform, and the attached display module is opposite to the die-cut product; tearing off the release film on the die-cut product to expose the adhesive layer on the die-cut product; The first laminating platform and the second laminating platform are pressed in parallel to gradually reduce the distance between the first laminating platform and the second laminating platform until the adhesive layer on the die-cut product is completely laminarized on the laminar display module.
10. A die-cut product, characterized in that: The die-cut product is made by the method for preparing an automatic exhaust die-cut product according to any one of claims 1 to 7.