A high-slip effective anti-fingerprint uv-cured film

Abstract

The utility model relates to the technical field of film material, and disclose a kind of high smooth effective anti-fingerprint UV curing film, including the surface protective film located in the uppermost, the surface protective film is sequentially provided with surface electroplating smooth layer, surface hard coating, PET composite material, semi-solidified UV layer, PET composite material, silica gel paste layer, release film and bottom film.This kind of high smooth effective anti-fingerprint UV curing film, by the ultra-low surface energy characteristics of surface electroplating smooth layer, fingerprint is difficult to adhere to film surface, by surface hard coating and semi-solidified UV layer of vacuum curing, the hardness of UV curing film reaches 6H, can effectively resist the scratch of sharp object such as fingernail, surface electroplating smooth layer gives film surface excellent smooth touch, when adhering, microchannel flow guide structure can guide the uniform flow of silica gel paste layer glue, ensure that the glue of edge corner part is fully filled, further improve the compactness and reliability of adhesion.

Description

Technical Field

[0001] This utility model relates to the field of thin film materials technology, specifically to a UV-cured film that is highly slippery and effectively resists fingerprints. Background Technology

[0002] With the close integration of modern technology and daily life, various electronic devices and decorative materials are widely used, and the demand for surface protection and aesthetics is becoming increasingly prominent. UV-curable films, as a key surface treatment material, utilize ultraviolet light to excite photoinitiators, achieving rapid curing. With their high efficiency, environmental friendliness, and superior performance, they are emerging in many fields. In optical components and displays, UV-curable films are highly favored due to their high transparency and low reflectivity; in the protection of electronic device screens, they can improve impact and scratch resistance.

[0003] However, currently common UV-cured films have certain shortcomings in use. Regarding anti-fingerprint performance, although some UV-cured films claim to have anti-fingerprint effects, in frequent use scenarios, such as high-frequency contact devices like mobile phones and tablets, fingerprints and oils can easily penetrate into the film layer and are difficult to wipe clean. In terms of hardness and abrasion resistance, some existing UV-cured films cannot withstand accidental scratches from sharp objects, easily showing obvious scratches and reducing the film's lifespan. In terms of smoothness, some UV-cured films have a poor feel, with obvious stickiness during operation, especially in the operation of electronic products with extremely high touch sensitivity requirements, reducing the user experience and affecting the smoothness and accuracy of operation. Furthermore, common UV-cured films are difficult to apply precisely, and bubbles and curling are prone to appear at the corners, which not only affects the appearance but also greatly reduces the protective effect of the film. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a highly slippery and effectively fingerprint-resistant UV-cured film, which has the advantages of high slipperiness, scratch resistance, and precise adhesion, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a highly slippery and effective anti-fingerprint UV-curable film, comprising an uppermost surface protective film, and below the surface protective film, a surface electroplated slippery layer, a surface hardening coating, a PET composite material, a semi-cured UV layer, a PET composite material, a silicone adhesive layer, a release film, and a backing film.

[0006] The surface electroplated smooth layer is formed on the surface using a vacuum electroplating process, creating a nano-scale silica and titanium dioxide composite coating. This coating has ultra-low surface energy, effectively reducing the adhesion between fingerprints and the film surface, making it difficult for fingerprints to adhere to the film surface. At the same time, it gives the film surface an excellent smooth feel, making finger gliding smoother and more natural during operation. The surface hardening coating is composed of UV-curable polyurethane acrylate resin, nano-alumina filler, and photoinitiator. Through the UV curing process, the coating forms a dense cross-linked network structure with a hardness of up to 6H, which can effectively resist scratches from sharp objects such as fingernails, protecting the film surface from scratches. The surface of the silicone adhesive layer is distributed with a microchannel network in a mesh shape. This microchannel structure can guide the flow of adhesive in the silicone adhesive layer during bonding, ensuring that the adhesive is evenly distributed on the film surface, especially at the corners, ensuring that the adhesive is fully filled and avoiding adhesive accumulation or gaps.

[0007] Furthermore, the surface protective film is made of transparent polyethylene film, and the surface protective film and the surface electroplated smooth layer are connected by electrostatic adsorption.

[0008] The above solution provides a surface protective film that protects the surface of the UV-cured film during production, transportation, and installation, preventing damage to the surface electroplated smooth layer. The surface protective film and the surface electroplated smooth layer are easily peeled off during use due to electrostatic adsorption.

[0009] Furthermore, the PET composite material has two layers, both made of biaxially oriented polyethylene terephthalate film.

[0010] Through the above scheme, the PET composite material made from biaxially oriented polyethylene terephthalate film has good mechanical strength, transparency and dimensional stability, providing support and protection for UV-cured film, while enhancing the flexibility of film and making it easy to fit surfaces of different shapes.

[0011] Furthermore, the semi-cured UV layer is composed of UV-curable resin, reactive diluent, and photoinitiator.

[0012] The above scheme uses a vacuum curing process for the semi-cured UV layer, which is UV cured in a vacuum environment. This prevents the formation of air bubbles during the curing process, resulting in a more uniform and dense cured structure. This further improves the hardness and impact resistance of the film, while also enhancing the adhesion between the layers.

[0013] Furthermore, the silicone adhesive layer is made of silicone pressure-sensitive adhesive, and the bottom surface of the silicone adhesive layer is rounded.

[0014] Through the above solution, the silicone pressure-sensitive adhesive has good adhesion and flexibility, and can adhere tightly to the surface to be attached, especially at the corners, achieving precise adhesion and effectively avoiding the generation of bubbles and lifting edges. At the same time, the silicone adhesive layer is removable, leaving no adhesive residue and causing no damage to the surface to be attached. The rounded corner structure makes it easier to bend and adhere the edges when the film is attached, reducing the risk of lifting edges caused by uneven thickness. It can also reduce stress concentration at the film edges and improve the durability of the film.

[0015] Furthermore, the release film is made of polyester release film and its surface is coated with a fluorinated release agent.

[0016] With the above solution, the release film is used to protect the silicone adhesive layer when the UV-cured film is not in use, preventing the silicone adhesive layer from sticking to other objects, and can be easily peeled off when in use.

[0017] Furthermore, the base film is made of a transparent polyethylene film.

[0018] The above solution provides support during the UV curing film production process, facilitating film processing and transportation.

[0019] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0020] This highly slippery and fingerprint-resistant UV-cured film utilizes the ultra-low surface energy of its electroplated slip layer to prevent fingerprints from adhering to the film surface. Even if a small amount of fingerprint residue remains, it can be easily wiped away, keeping the film surface clean and aesthetically pleasing. Through a surface hardening coating and a vacuum-cured semi-cured UV layer, the UV-cured film achieves a hardness of 6H, effectively resisting scratches from sharp objects such as fingernails, extending the film's lifespan, and protecting the surface of the object to which it is attached. The electroplated slip layer provides an excellent slippery feel, making finger gliding smoother during operation and enhancing the user experience. During bonding, the microchannel flow structure guides the adhesive in the silicone adhesive layer to flow evenly, ensuring sufficient filling of the corners and edges, further improving the tightness and reliability of the bond. The edge thinning design reduces stress concentration at the film edges, improving durability and extending the UV-cured film's lifespan. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present application;

[0022] Figure 2 For the purposes of this application as a whole Figure 1 Enlarged schematic diagram of the structure at point A;

[0023] Figure 3 This is an exploded view of the entire application;

[0024] Figure 4 This is a bottom view of the entire silicone adhesive layer of this application.

[0025] In the picture:

[0026] 1. Surface protective film; 2. Surface electroplated smooth layer; 3. Surface hardening coating; 4. PET composite material; 5. Semi-cured UV layer; 6. Silicone adhesive layer; 7. Release film; 8. Supporting film; 9. Microchannel network. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] Please see Figure 1 , Figure 2 and Figure 3 The UV-cured film with high smoothness and effective anti-fingerprint properties in this embodiment includes a surface protective film 1 at the top, and a surface electroplated smooth layer 2, a surface hardening coating 3, a PET composite material 4, a semi-cured UV layer 5, a silicone adhesive layer 6, a release film 7, and a backing film 8 arranged sequentially below the surface protective film 1.

[0029] Please see Figure 2 , Figure 3 and Figure 4 The surface electroplated smooth layer 2 is formed on the surface using a vacuum electroplating process to create a nano-scale silica and titanium dioxide composite coating. This coating has ultra-low surface energy, which can effectively reduce the adhesion between fingerprints and the film surface, making it difficult for fingerprints to adhere to the film surface. At the same time, it gives the film surface an excellent smooth feel, making finger gliding smoother and more free during operation. The surface hardening coating 3 is composed of UV-curable polyurethane acrylate resin, nano-alumina filler and photoinitiator. Through the UV curing process, the coating forms a dense cross-linked network structure with a hardness of up to 6H, which can effectively resist the scratches of sharp objects such as fingernails and protect the film surface from scratches. The surface of the silicone adhesive layer 6 is distributed with a microchannel network 9. The microchannel network 9 is grid-shaped with a width of 5μm and a depth of 3μm. This microchannel structure can guide the flow of adhesive in the silicone adhesive layer 6 during bonding, so that the adhesive is evenly distributed on the surface of the film, especially in the corners, ensuring that the adhesive is fully filled and avoiding adhesive accumulation or gaps.

[0030] Please see Figure 2 , Figure 3 and Figure 4The surface protective film 1 is made of transparent polyethylene film. The surface protective film 1 and the surface electroplated slip layer 2 are connected by electrostatic adsorption. The surface protective film 1 is used to protect the surface of the film during the production, transportation and installation of the UV curing film and prevent the surface electroplated slip layer 2 from being damaged. The electrostatic adsorption between the surface protective film 1 and the surface electroplated slip layer 2 makes it easy to peel off during use. The PET composite material 4 is composed of two layers, both made of biaxially oriented polyethylene terephthalate film. The PET composite material 4 made of biaxially oriented polyethylene terephthalate film has good mechanical strength, transparency and dimensional stability, providing support and protection for the UV curing film, while enhancing the flexibility of the film and making it easy to fit surfaces of different shapes.

[0031] Please see Figure 2 , Figure 3 and Figure 4 The semi-cured UV layer 5 is composed of UV-curing resin, reactive diluent, and photoinitiator. It employs a vacuum curing process, where UV curing is performed in a vacuum environment. This prevents air bubbles from forming during the curing process, resulting in a more uniform and dense cured structure, further enhancing the film's hardness and impact resistance. It also strengthens the adhesion between layers. The silicone adhesive layer 6 uses silicone pressure-sensitive adhesive, which has excellent adhesion and flexibility, allowing for tight adhesion to the surface, especially at corners, effectively preventing air bubbles and edge lifting. The silicone adhesive layer 6 is removable, leaving no adhesive residue and causing no damage to the surface. The bottom surface of the silicone adhesive layer 6 has rounded corners, making it easier to bend and adhere the film at the corners, reducing the risk of edge lifting due to uneven thickness. It also reduces stress concentration at the film edges, improving the film's durability.

[0032] Please see Figure 2 , Figure 3 and Figure 4 Release film 7 is made of polyester release film and coated with fluorinated release agent. Release film 7 is used to protect silicone adhesive layer 6 when UV curing film is not in use, and to prevent silicone adhesive layer 6 from sticking to other objects. It can be easily peeled off when in use. Support film 8 is made of transparent polyethylene film. Support film 8 is used to provide support during the production process of UV curing film, and to facilitate film processing and transportation.

[0033] It should be noted that during use, after the UV-cured film is applied, press the film from the center outwards to remove air bubbles and achieve precise adhesion. Pressing also ensures tight adhesion at the corners, preventing curling and gaps.

[0034] The working principle of the above embodiment is as follows: First, prepare the surface protective film 1, the surface electroplated smooth layer 2, the surface hardening coating 3, the PET composite material 4, the semi-cured UV layer 5, the PET composite material 6, the silicone adhesive layer 6, the release film 7, and the base film 8 in sequence according to conventional processes. When preparing the microchannel flow guiding structure, microchannels are processed on the surface of the silicone adhesive layer 6 to make it grid-like. By controlling the coating process, the silicone adhesive layer 6 is rounded at the bottom edge of the UV-cured film.

[0035] When using this UV-cured film, first peel off the release film 7, align the UV-cured film with the object to be adhered to, and slowly adhere the film to the surface of the object, starting from one corner. The microchannels guide the adhesive to flow evenly, ensuring that the adhesive is fully filled in the corners. The ultra-low surface energy of the surface electroplated smooth layer 2 makes it difficult for fingerprints to adhere to the film surface. Even if a small amount of fingerprint residue remains, it can be easily wiped away, keeping the film surface clean and beautiful. The surface hardening coating 3 and the vacuum-cured semi-cured UV layer 5 give the UV-cured film a hardness of 6H, which can effectively resist scratches from sharp objects such as fingernails, extend the service life of the film, and protect the surface of the object to be adhered to. The surface electroplated smooth layer 2 gives the film surface an excellent smooth feel, making finger sliding smoother during operation and improving the user experience. The rounded corner structure makes it easier for the edges of the film to bend and adhere when adhering to the corners, reducing the risk of edge lifting caused by uneven thickness, while also reducing stress concentration at the edges of the film and improving the durability of the film.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A UV-cured film with high smoothness and effective anti-fingerprint properties, comprising an uppermost surface protective film (1), characterized in that: The surface protective film (1) is provided with the following layers in sequence: surface electroplating smooth layer (2), surface hardening coating (3), PET composite material (4), semi-cured UV layer (5), PET composite material (4), silicone adhesive layer (6), release film (7) and base film (8); The surface electroplated smooth layer (2) is formed on the surface by vacuum electroplating process to form a nano-scale silicon dioxide and titanium dioxide composite coating. The surface hardening coating (3) is composed of UV-curable polyurethane acrylate resin, nano-alumina filler and photoinitiator. The surface of the silicone adhesive layer (6) is distributed with a microchannel network (9), which is in the form of a mesh.

2. The UV-cured film with high smoothness and effective anti-fingerprint properties according to claim 1, characterized in that: The surface protective film (1) is made of transparent polyethylene film, and the surface protective film (1) and the surface electroplated smooth layer (2) are connected by electrostatic adsorption.

3. The UV-cured film with high smoothness and effective anti-fingerprint properties according to claim 1, characterized in that: The PET composite material (4) has two layers, both of which are made of biaxially stretched polyethylene terephthalate film.

4. The UV-cured film with high smoothness and effective anti-fingerprint properties according to claim 1, characterized in that: The semi-cured UV layer (5) is composed of UV-curable resin, reactive diluent and photoinitiator.

5. The UV-cured film with high smoothness and effective anti-fingerprint properties according to claim 1, characterized in that: The silicone adhesive layer (6) is made of silicone pressure-sensitive adhesive, and the bottom surface of the silicone adhesive layer (6) is rounded.

6. The UV-cured film with high smoothness and effective anti-fingerprint properties according to claim 1, characterized in that: The release film (7) is made of polyester release film and coated with a fluorinated release agent.

7. The UV-cured film with high smoothness and effective anti-fingerprint properties according to claim 1, characterized in that: The base film (8) is made of transparent polyethylene film.

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