Flexible anti-impact protective film for electronic equipment

Abstract

The utility model relates to the technical field of protective films, and discloses a flexible anti-impact protective film for electronic equipment, which comprises a bonding layer, a base material layer and a surface layer which are connected in sequence, the base material layer is a mixed material layer of polyurethane and shear hardening gel. According to the utility model, the shear hardening gel technology is added on the basis of the traditional protective film, when the protective film is impacted, the shear gel in the material is instantly hardened, the impact force can be effectively and instantly dispersed, the impact energy is further dispersed by a larger stress area, the energy is further dissipated through the elastomer material, and the buffer effect is better.

Description

Technical Field

[0001] This utility model relates to the field of protective film technology, and in particular to a flexible shock-resistant protective film for electronic devices. Background Technology

[0002] With the rapid development of technology, there are more and more types of electronic devices, especially watches and mobile phones. Currently, most electronic products are equipped with a display screen, and users can control the functions by touching the display screen. Since the display screen is easily scratched when it is exposed, such as when users frequently touch the display screen, dust and impurities rub against the display screen, and the display screen is bumped, the display screen is easily scratched and damaged. In order to protect the display screen from scratches and damage, screen protectors are generally applied to protect the display screen.

[0003] Traditional protective films rely solely on the elasticity of the material itself to achieve a certain level of cushioning performance, which is relatively poor. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a flexible impact-resistant protective film for electronic devices.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A flexible impact-resistant protective film for electronic devices includes an adhesive layer, a substrate layer, and a surface layer connected in sequence.

[0007] The substrate layer is a hybrid material layer of polyurethane and shear-hardening gel.

[0008] Preferably, the thickness of the substrate layer is 50-200 μm.

[0009] Preferably, the thickness of the adhesive layer is between 10-50 μm.

[0010] Preferably, the surface layer includes a polar adhesive transition layer for bonding with the substrate layer, and a protective layer disposed on the surface of the polar adhesive transition layer, wherein the thickness of the surface layer is between 7-15 μm.

[0011] Preferably, it also includes a release film, wherein there are several protective films of different shapes and sizes, and all of them are disposed on the release film.

[0012] Preferably, a peelable protective film is provided on the other side of the surface layer.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention adds shear-hardening gel technology to the traditional protective film. When impacted, the shear gel inside the material hardens instantly, which can effectively disperse the impact force instantly, thus providing a larger force-bearing area to disperse the impact energy. Furthermore, the energy is dissipated through the elastomer material, resulting in a better buffering effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram illustrating the composition of a flexible impact-resistant protective film for electronic devices proposed in this utility model.

[0016] In the diagram: 1. Substrate layer; 2. Adhesive layer; 3. Surface layer; 4. Protective film to be removed; 5. Release film. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Reference Figure 1 A flexible impact-resistant protective film for electronic devices includes an adhesive layer 2, a substrate layer 1, and a surface layer 3 connected in sequence.

[0019] The substrate layer 1 is a hybrid material layer of polyurethane and shear hardening gel. This material is a silicone-containing polyurethane modified shear hardening gel, which has better cold flow resistance after being subjected to impact and tension, and can also enhance the creep resistance effect.

[0020] Therefore, when applied to mobile phone and watch films, compared to traditional protective films that rely solely on elasticity to achieve a certain level of cushioning performance, this protective film adds shear-hardening gel technology to the flexible polyurethane film material. When impacted, the shear gel inside the material instantly hardens, effectively dispersing the impact force instantly. This results in a larger force-bearing area to disperse the impact energy, which is then further dissipated through the elastomer material, greatly improving the cushioning performance of existing technologies.

[0021] In this embodiment, the thickness of the substrate layer 1 is 50-200um. This thickness design allows for the absorption and dissipation of more impact energy, resulting in better buffering performance and a better protective effect.

[0022] In this embodiment, the thickness of the adhesive layer 2 is between 10-40 μm. The thickness of a conventional adhesive layer 2 is usually 5-25 μm, while in this design, the thickness is designed to be between 10-40 μm to increase adhesion and bonding stability, resulting in higher bonding stability.

[0023] In this embodiment, the surface layer 3 includes a polar bonding transition layer for bonding with the substrate layer 1, and a protective layer disposed on the surface of the polar bonding transition layer. The thickness of the surface layer 3 is between 7-15 μm. In this embodiment, the surface layer 3 adopts a double-layer design. First, the protective layer serves as the outermost layer of the protective film, directly contacting the external environment. It then bonds with the substrate layer 1 in conjunction with the polar bonding transition layer. Because traditional materials are single-layer designs, the coating often has a high degree of polarity, while the substrate is often non-polar. This results in a weak bond between the coating and the substrate, making the coating prone to peeling or wear failure, leading to a decrease in the protective function of the material surface. This product uses this design to solve this problem.

[0024] The polar bonding transition layer uses an organosilicon-modified waterborne polyurethane adhesive.

[0025] The protective layer uses isocyanates (e.g., toluene diisocyanate, TDI) and polyols (e.g., polyether polyols, hydroxypropyl polyethers) as the main material, with added functional additives that have certain surface anti-oil properties. It is a hydrophobic coating material made of organosilicon compounds (e.g., fluorosilanes 1H, 2H2 and H-hexafluoro-1-polymethylsiloxane) as well as methyltriethoxysilane (MTES) and long-chain alkylsilanes (octyltriethoxysilane)). It has good hydrophobicity, anti-oil properties, flexibility, weather resistance and adhesion.

[0026] In this embodiment, a release film 5 is also included. Several protective films are provided, and they are of different shapes and sizes. They are all provided on the release film 5. For example, when this product is applied to an electronic watch, it is often not only necessary to stick it to the screen, but also to the perimeter of the watch. Therefore, this product adopts this design, which can prepare a protective film for the entire watch to be applied on a set of products.

[0027] In this embodiment, a peelable protective film 4 is provided on the other side of the surface layer 3, which is used only as a protective layer for the product.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A flexible impact protection film for electronic devices, comprising an adhesive layer, a substrate layer and a surface layer arranged in sequence, characterized in that: the substrate layer is a shear hardening gel modified with silicon polyurethane.

2. The flexible, impact-resistant protective film for electronic devices of claim 1, wherein: the thickness of the substrate layer is 50-200 um.

3. The flexible, impact-resistant protective film for electronic devices of claim 1, wherein: the thickness of the adhesive layer is 10-50 um.

4. The flexible, impact-resistant protective film for electronic devices of claim 2, wherein: the surface layer comprises a polar adhesive transition layer for bonding with the substrate layer, and a use protection layer arranged on the surface of the polar adhesive transition layer, and the thickness of the surface layer is 7-15 um.

5. The flexible, impact-resistant protective film for electronic devices of claim 1, wherein: a release film is further included, and the protection film is provided with several protection films of different shapes and sizes, and each is arranged on the release film.

6. The flexible, impact-resistant protective film for electronic devices of claim 1, wherein: a tear-off protection film is arranged on the other side of the surface layer.

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