UV tempered film capable of preventing glue overflow at edge

Abstract

The utility model relates to the technical field of tempered films, in particular to a UV (ultraviolet) tempered film with glue overflowing prevention edges, which comprises a tempered film main body and a glue overflowing prevention frame matched with the edges of the tempered film main body, two sides of the tempered film main body are arranged in a radian bending structure, so that the tempered film main body presents an inner concave surface as a sticking surface and an outer convex surface as a touch surface, and the edge of the tempered film main body is provided with the glue overflowing prevention frame. The anti-glue-overflow frame is made of a flexible liquid blocking material, a hard release layer is attached to the upper end of the anti-glue-overflow frame, an adhesive layer is arranged at the lower end of the anti-glue-overflow frame, and a first release film layer is attached to the lower end of the adhesive layer; according to the technical scheme, the UV adhesive cannot overflow to the position outside the UV tempered film due to correction of the tempered film main body, and the UV adhesive cannot permeate to the outside of the UV tempered film along the anti-overflow adhesive frame by adopting a blocking mode instead of an adsorption mode, so that the outer side of the attached UV tempered film is not sticky.

Description

Technical Field

[0001] The utility model relates to the technical field of tempered films, in particular to a UV tempered film with anti-glue overflow at the edge. Background Art

[0002] As the design of smartphones is gradually updated, existing smartphones have introduced curved screen designs, which can improve sensory experience, provide a more comfortable wearing experience, have better large screen performance and are drop-resistant, and have better three-dimensional display effects. However, in order to better protect the screen of traditional smartphones during use and prevent the outermost layer of the screen from being scratched after long-term use and cannot be replaced, attaching a tempered film to the screen of the smartphone as protection has become a traditional technology. However, since the design of the curved screen is different from that of the traditional straight screen, the use of a traditional tempered film for attachment will not be able to fully cover it. If the curved tempered film is designed relying on the structural design of the traditional tempered film, there may be a situation where the adhesive layer is not properly attached. Therefore, the prior art introduces a UV curved tempered film, which separates the glue attached to the curved tempered film from the curved tempered film, and uses UV light curing to solidify the glue, thereby achieving the purpose of attaching the curved tempered film in all directions; however, due to the difference in the design of the curved screen and the traditional flat screen, the adhesive layer may not be fully attached. During the attachment process, UV glue easily overflows along the edge of the tempered film, and the UV glue often penetrates into the inside of the mobile phone along the holes around the mobile phone, and may even cause the buttons around the mobile phone to solidify, resulting in failure of the buttons or reduced use effect. In this regard, the inventor has proposed a curved screen tempered film with a glue-absorbing edge as described in the utility model patent authorization announcement number CN218041442U; a circle of glue-absorbing edges is provided along the edge of the curved tempered film located on the inner concave surface, and the glue-absorbing edges are used to absorb UV glue, so that the overflowed UV glue can be absorbed during the process of attaching to the mobile phone screen, so that the overflowed UV glue will not overflow to the periphery of the mobile phone as much as possible, thereby protecting the holes and buttons around the mobile phone during the process of attaching the UV curved screen tempered film, and through the provision of the glue-absorbing edges, the periphery of the curved screen tempered film can absorb more UV glue, ensuring that the periphery of the curved screen tempered film is more firmly adhered to the mobile phone screen.

[0003] However, in the process of film pasting, there is a step of adjusting the UV tempered film after the UV glue covers the entire screen, that is, the UV tempered film will move in the process of gradually covering the entire screen with the UV glue, and the UV tempered film needs to be adjusted. After the UV glue covers the entire screen and in the process of adjusting the UV tempered film, a part of the UV glue adsorbed in the glue absorption edge will still penetrate into the edge of the screen, and after the UV glue is adsorbed by the single glue absorption edge, the glue absorption edge will produce a certain stickiness. After a period of use, the aesthetics of the edge of the tempered film will be affected due to the adhesion of more dust. In this regard, it is necessary to propose an improved technical solution to solve the above problems. Utility Model Content

[0004] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0005] A UV tempered film with anti-glue overflow at the edge comprises a tempered film main body and an anti-glue overflow frame matched with the edge of the tempered film main body, the two sides of the tempered film main body are arranged in an arc bending structure, so that the tempered film main body presents an inner concave surface as an adhesive surface and an outer convex surface as a touch surface, the anti-glue overflow frame is made of flexible liquid-resistant material, a hard release layer is attached to the upper end of the anti-glue overflow frame, an adhesive layer is arranged at the lower end of the anti-glue overflow frame, and a first release film layer is attached to the lower end of the adhesive layer.

[0006] Preferably, the anti-glue overflow frame is made of silicone or rubber material.

[0007] Preferably, an OCA adhesive layer is provided at the lower end of the tempered film body, and an explosion-proof film layer is provided at the lower end of the tempered film body through the OCA adhesive layer.

[0008] Preferably, the hard release layer is made of acrylic material.

[0009] Preferably, a second release film layer is provided at the lower end of the explosion-proof film layer, so that the tempered film body, the OCA adhesive layer, the explosion-proof film layer and the second release film layer together constitute a hard release layer attached to the anti-overflow adhesive frame.

[0010] Preferably, the edges of the first release film layer and the second release film layer are both extended with hand-tear edges.

[0011] Preferably, the first release film layer is a frame structure matching the anti-glue overflow frame.

[0012] Preferably, the adhesive layer is made of AB glue material.

[0013] Preferably, an anti-fingerprint layer is coated on the upper end of the tempered film body.

[0014] Preferably, the thickness of the tempered film body is 0.3mm-0.5mm, and the thickness of the anti-overflow glue frame is 0.15mm-0.20mm.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] When attaching the UV tempered film of the utility model, the anti-overflow glue frame is first attached to the curved screen, and then the tempered film body is positioned and attached to the curved screen. When the UV glue spreads, it will only cause the tempered film body to move, while the anti-overflow glue frame will not move, thereby blocking the UV glue that can spread to the edge of the tempered film body. Therefore, the UV glue will not overflow to a position outside the UV tempered film due to the correction of the tempered film body, and by adopting a blocking method rather than an adsorption method, the UV glue will not penetrate outside the UV tempered film along the anti-overflow glue frame, thereby ensuring that the outside of the UV tempered film after attachment will not be sticky. In addition, the colored anti-overflow glue frame can also be used as the frame of the tempered film body to shield the edge of the tempered film body, so that the edge of the tempered film body will not have a white edge, thereby improving the overall aesthetic effect.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a structural schematic diagram in which the tempered film body and the anti-overflow glue frame in the utility model are set as separate individuals;

[0021] Figure 3 It is a schematic diagram of the explosion structure in which the anti-overflow glue frame is arranged on the tempered film body in the utility model.

[0022] The reference numerals and names in the figures are as follows:

[0023] The tempered film body 10 , the OCA adhesive layer 11 , the explosion-proof film layer 12 , the second release film layer 13 , the anti-fingerprint layer 14 , the anti-overflow glue frame 20 , the adhesive layer 21 , the first release film layer 22 , the hard release layer 30 , and the hand-tear edge 40 . DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-3 In an embodiment of the utility model, a UV tempered film with anti-overflow glue on the edge includes a tempered film body 10 and an anti-overflow glue frame 20 matched with the edge of the tempered film body 10. The two sides of the tempered film body 10 are arranged in an arc bending structure, so that the tempered film body 10 presents an inner concave surface as an adhesive surface and an outer convex surface as a touch surface. The anti-overflow glue frame 20 is made of a flexible liquid-resistant material, and a hard release layer 30 is attached to the upper end of the anti-overflow glue frame 20. The lower end of the anti-overflow glue frame 20 is provided with an adhesive layer 21, and the adhesive layer 21 is preferably made of AB glue material, and a first release film layer 22 is attached to the lower end of the adhesive layer 21.

[0026] In the above technical solution, by setting two parts, namely a tempered film body 10 and an anti-overflow glue frame 20, the tempered film body 10 is used to be attached to the curved screen. According to the existing curved screen structure on the market, it is set to have an arc-bent structure on both sides. The anti-overflow glue frame 20 matches the edge of the tempered film body 10. In the process of attaching the UV tempered film, the anti-overflow glue frame 20 is first attached to the curved screen, and then UV glue is dripped on the curved screen. Finally, the tempered film body 10 is placed on the curved screen so that the edge of the tempered film body 10 is aligned with the anti-overflow glue frame 20. After the tempered film body 10 is placed, the UV glue will be squeezed and spread to the entire curved screen. When the UV glue spreads to the anti-overflow glue frame 20 The UV glue will be blocked when it spreads, so that the UV glue will not overflow. Through this arrangement, the spread of the UV glue will only cause the movement of the tempered film body 10, and the UV glue will not overflow to a position outside the UV tempered film due to the correction of the tempered film body 10. Moreover, by adopting an obstruction method rather than an adsorption method, the UV glue will not penetrate into the outside of the UV tempered film along the anti-overflow glue frame 20, thereby ensuring that the outside of the UV tempered film after attachment will not be sticky. In addition, the colored anti-overflow glue frame 20 can also be used as the frame of the tempered film body 10 to shield the edge of the tempered film body 10, so that there will be no white edge on the edge of the tempered film body 10, thereby improving the overall aesthetic effect.

[0027] In terms of thickness, the tempered film body 10 is preferably 0.3mm-0.5mm thick, and the anti-overflow glue frame 20 is 0.15mm-0.20mm thick; a thickness space of 0.15mm-0.20mm is provided for the UV glue, and some completely closed spaces are generated between the anti-overflow glue frame 20, the curved screen and the tempered film body 10, so that the UV glue cannot spread. At this time, the tempered film body 10 at this position is manually lifted up to form a gap between the tempered film body 10 and the anti-overflow glue frame 20 to allow the internal air to be discharged, and the tempered film body 10 is brought into contact with the anti-overflow glue frame 20 after the UV has completely spread.

[0028] See also Figure 3 In this embodiment, the anti-overflow glue frame 20 is made of silicone or rubber material, so that the contact between the tempered film body 10 and the anti-overflow glue frame 20 is closer, and the silicone or rubber has a certain elasticity. If the operation is proper, during the spread of UV glue, the air at this position can be squeezed out by local pressing; an OCA glue layer 11 is provided at the lower end of the tempered film body 10, and an explosion-proof film layer 12 is provided at the lower end of the tempered film body 10 through the OCA glue layer 11 to prevent a large range of splashing after the tempered film body 10 is broken.

[0029] In the process of attaching the anti-overflow glue frame 20, the hard release layer 30 is required to position the shape of the anti-overflow glue frame 20, so as to ensure that the anti-overflow glue frame 20 is accurately attached to the specified position, such as Figure 3 As shown, generally, a second release film layer 13 is provided at the lower end of the explosion-proof film layer 12, so that the tempered film body 10, the OCA adhesive layer 11, the explosion-proof film layer 12 and the second release film layer 13 together constitute a hard release layer 30 attached to the anti-overflow glue frame 20; that is, the anti-overflow glue frame 20 is first attached to the tempered film body 10 before leaving the factory, and the anti-overflow glue frame 20 is positioned by the tempered film body 10, so as to achieve the purpose of saving materials; in addition, as Figure 2 As shown, the anti-glue overflow frame 20 can also be used alone. When the anti-glue overflow frame 20 is used alone, the hard release layer 30 is made of acrylic material.

[0030] See also Figure 3 In this embodiment, the edges of the first release film layer 22 and the second release film layer 13 are both extended with hand-tear edges 40 to facilitate tearing of the first release film layer 22 and the second release film layer 13; the first release film layer 22 is a frame structure that matches the anti-overflow glue frame 20, further saving materials.

[0031] See also Figure 3In this embodiment, an anti-fingerprint layer 14 is coated on the upper end of the tempered film body 10, which can achieve the purpose of anti-fingerprint and ensure the cleanliness and smoothness of the surface of the UV tempered film when in use.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A UV tempered film with anti-overflow glue on the edge, characterized in that: It includes a tempered film main body and an anti-overflow glue frame matched with the edge of the tempered film main body. The two sides of the tempered film main body are arranged in an arc-bent structure, so that the tempered film main body presents an inner concave surface as an adhesive surface and an outer convex surface as a touch surface. The anti-overflow glue frame is made of flexible liquid-resistant material. A hard release layer is attached to the upper end of the anti-overflow glue frame, an adhesive layer is arranged at the lower end of the anti-overflow glue frame, and a first release film layer is attached to the lower end of the adhesive layer.

2. The UV tempered film with anti-overflow glue at the edge according to claim 1, characterized in that: The anti-overflow glue frame is made of silicone or rubber material.

3. The UV tempered film with anti-overflow glue at the edge according to claim 1, characterized in that: An OCA adhesive layer is arranged at the lower end of the tempered film body, and an explosion-proof film layer is arranged at the lower end of the tempered film body through the OCA adhesive layer.

4. A UV tempered film with anti-glue edge overflow according to any one of claims 1-3, characterized in that: The hard release layer is made of acrylic material.

5. The UV tempered film with anti-overflow glue at the edge according to claim 3, characterized in that: A second release film layer is arranged at the lower end of the explosion-proof film layer, so that the tempered film body, the OCA adhesive layer, the explosion-proof film layer and the second release film layer together constitute a hard release layer attached to the anti-overflow adhesive frame.

6. The UV tempered film with anti-overflow glue at the edge according to claim 1, characterized in that: The edges of the first release film layer and the second release film layer are both extended with hand-tear edges.

7. The UV tempered film with anti-overflow glue at the edge according to claim 1, characterized in that: The first release film layer is a frame structure matching the anti-overflow glue frame.

8. The UV tempered film with anti-overflow glue at the edge according to claim 1, characterized in that: The adhesive layer is made of AB glue material.

9. The UV tempered film with anti-overflow glue at the edge according to claim 1, characterized in that: An anti-fingerprint layer is coated on the upper end of the tempered film body.

10. The UV tempered film with anti-glue overflow at the edge according to claim 1, characterized in that: The thickness of the tempered film body is 0.3mm-0.5mm, and the thickness of the anti-overflow glue frame is 0.15mm-0.20mm.

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