AF (anti-fingerprint) film for motor vehicle

Abstract

The utility model discloses an AF anti-fingerprint film for a motor vehicle. The AF anti-fingerprint film comprises a release layer, a pressure-sensitive adhesive layer, a heat conduction layer, a first flexible transparent film, a base film layer, a second flexible transparent film, an anti-fingerprint film piece and a hydrophobic antistatic layer which are sequentially arranged in a stacked mode in the designated direction. The third flexible transparent film at least covers the side wall of the anti-fingerprint film sheet; in addition, the heat conduction layer further continuously extends to cover the first flexible transparent film, the base film layer, the side wall of the second flexible transparent film and the third flexible transparent film. According to the utility model, the first flexible transparent film and the second flexible transparent film are used for buffering and reducing friction, the heat conduction layer is used for reducing thermal stress and improving the fitness between the touch screen and the rearview mirror, and the hydrophobic antistatic layer is used for reducing the accumulation of water stains and dust and improving the performance.

Description

Technical Field

[0001] This utility model relates to the field of anti-fingerprint film technology, and in particular to an AF anti-fingerprint film for motor vehicles. Background Technology

[0002] Cars are an indispensable means of transportation in modern life, greatly facilitating people's travel. Car windows, rearview mirrors, interior parts, and touch screens are all important car accessories. To improve the appearance of these accessories, anti-fingerprint films are applied to reduce the adhesion of fingerprints and dust.

[0003] In the existing use of AF anti-fingerprint films on car windows, rearview mirrors, interior parts, and touch screens, the AF film, which is directly attached to the base film, is more prone to wear and tear due to friction during daily use, affecting its anti-fingerprint effect and transparency. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an AF anti-fingerprint film for motor vehicles. During use, a first flexible transparent film and a second flexible transparent film are filled between the base film layer and the anti-fingerprint film sheet, serving as a protective layer between the anti-fingerprint film sheet and the base film layer. This reduces damage to the anti-fingerprint film sheet from direct friction, absorbs and disperses impact forces, protects the anti-fingerprint film sheet and the base film layer from external impact damage, and improves the overall impact resistance of the film layer.

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

[0006] An anti-fingerprint film for motor vehicles comprises, in a specified direction, a release layer, a pressure-sensitive adhesive layer, a thermally conductive layer, a first flexible transparent film, a base film layer, a second flexible transparent film, an anti-fingerprint film sheet, and a hydrophobic antistatic layer; and a third flexible transparent film, which at least covers the sidewalls of the anti-fingerprint film sheet; and the thermally conductive layer further extends to continuously cover the sidewalls of the first flexible transparent film, the base film layer, the second flexible transparent film, and the third flexible transparent film.

[0007] In this invention, a first flexible transparent film and a second flexible transparent film are used for buffering to reduce friction. A thermally conductive layer is used to reduce thermal stress and improve the fit between the touch screen and the rearview mirror. A hydrophobic and antistatic layer is used to reduce the accumulation of water stains and dust and improve performance.

[0008] In one embodiment, the third flexible transparent film continuously covers the sidewalls of the anti-fingerprint film and the hydrophobic antistatic layer to more effectively prevent moisture and other substances from entering.

[0009] Furthermore, the side surface of the third flexible transparent film near the heat-conducting layer is flush with the sidewalls of the base film layer, the second flexible transparent film, and the anti-fingerprint film.

[0010] In one embodiment, the thermally conductive layer extends continuously to form a cylindrical structure with one end open, and the first flexible transparent film, the base film layer, the second flexible transparent film, the anti-fingerprint film sheet, the hydrophobic antistatic layer and the third flexible transparent film are all disposed within the cylindrical structure.

[0011] Furthermore, the outer wall of the cylindrical structure is flush with the sidewalls of the release layer and the pressure-sensitive adhesive layer in the radial direction of the cylindrical structure.

[0012] In the above embodiment, the heat-conducting layer is concave in shape, and its edge is fixedly connected to the third flexible transparent film, which facilitates connection and sealing through the heat-conducting layer to prevent dust from entering.

[0013] In one embodiment, the hydrophobic antistatic layer comprises a polytetrafluoroethylene layer with an antistatic coating sprayed on its surface. The polytetrafluoroethylene has good hydrophobicity, and the addition of the antistatic coating reduces static electricity residue and prevents water accumulation and dust buildup.

[0014] In one embodiment, the thermally conductive layer comprises a polyimide layer with a thickness of 50-200 μm, which has good thermal conductivity and good transparency.

[0015] In one embodiment, the first flexible transparent film, the second flexible transparent film, and the third flexible transparent film are all made of polyethylene terephthalate with a thickness of 10~150μm, which has good transparency and elasticity, and plays a role in buffering and preventing moisture from entering.

[0016] In one embodiment, the thickness of the AF anti-fingerprint film is 0.5~3mm.

[0017] In one embodiment, the AF anti-fingerprint film is applied to the vehicle window glass, rearview mirror, interior trim, or touchscreen.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the application of the AF anti-fingerprint film for motor vehicles, the first flexible transparent film and the second flexible transparent film are filled between the base film layer and the anti-fingerprint film sheet. They can serve as a protective layer between the anti-fingerprint film sheet and the base film layer, reducing the damage to the anti-fingerprint film sheet caused by direct friction, absorbing and dispersing impact force, protecting the anti-fingerprint film sheet and the base film layer from damage by external impact, and improving the overall impact resistance of the film layer.

[0020] In this invention, by adding a hydrophobic and antistatic layer to the surface, the hydrophobicity of the surface is improved, reducing surface water stains. Combined with the antistatic coating, static electricity storage is reduced, dust residue is reduced, and the performance of the anti-fingerprint film is effectively improved.

[0021] In this invention, the heat is conducted between the touch screen and the rearview mirror through a heat-conducting layer. The temperature difference between the screen and the base film layer generates thermal stress, which can cause the screen to deform or be damaged. The heat-conducting transparent film helps to reduce thermal stress and maintain the flatness of the screen. Attached Figure Description

[0022] Figure 1 A perspective view of an AF anti-fingerprint film for motor vehicles according to an embodiment of the present invention;

[0023] Figure 2 This is a front sectional view of an AF anti-fingerprint film for motor vehicles according to an embodiment of the present invention;

[0024] Figure 3 for Figure 1 A magnified view of a portion of point A in the middle;

[0025] Figure 4 for Figure 2 A magnified view of a portion of point B in the middle.

[0026] Explanation of reference numerals in the attached drawings: 1. Thermally conductive layer; 2. Hydrophobic and antistatic layer; 3. Pressure-sensitive adhesive layer; 4. Release layer; 5. First flexible transparent film; 6. Base film layer; 7. Second flexible transparent film; 8. Anti-fingerprint film sheet; 9. Third flexible transparent film. Detailed Implementation

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

[0028] Reference Figure 1-4This embodiment proposes an anti-fingerprint film for motor vehicles, comprising a base film layer 6, a second flexible transparent film 7 on the upper surface of the base film layer 6, an anti-fingerprint film sheet 8 on the upper surface of the second flexible transparent film 7, a hydrophobic and antistatic layer 2 on the upper surface of the anti-fingerprint film sheet 8, which further reduces the accumulation of water stains and dust, improving performance; a third flexible transparent film 9 on the outer wall of the anti-fingerprint film sheet 8; a first flexible transparent film 5 on the lower surface of the base film layer 6, which buffers the friction between the first flexible transparent film 5 and the second flexible transparent film 7, and a thermally conductive layer 1 reduces thermal stress, improving adhesion between the film and the touch screen and the rearview mirror; a thermally conductive layer 1 on the lower surface of the first flexible transparent film 5, a pressure-sensitive adhesive layer 3 on the lower surface of the thermally conductive layer 1, and a release layer 4 on the lower surface of the pressure-sensitive adhesive layer 3.

[0029] Furthermore, the third flexible transparent film 9 continuously covers the sidewalls of the anti-fingerprint film 8 and the hydrophobic antistatic layer 2, and in the radial direction of the thermally conductive layer, the surface of the third flexible transparent film 9 closest to the thermally conductive layer 1 is flush with the sidewalls of the base film layer 6, the second flexible transparent film 7, and the anti-fingerprint film 8. The thermally conductive layer 1 extends continuously to form a cylindrical structure with one open end. The first flexible transparent film 5, the base film layer 6, the second flexible transparent film 7, the anti-fingerprint film 8, the hydrophobic antistatic layer 2, and the third flexible transparent film 9 are all disposed within the cylindrical structure. The outer wall of the cylindrical structure is flush with the sidewalls of the release layer 4 and the pressure-sensitive adhesive layer 3 in the radial direction of the cylindrical structure. The inner wall of the thermally conductive layer 1 is fixedly connected to the third flexible transparent film 9, facilitating connection and sealing through the thermally conductive layer 1 to prevent dust from entering. The hydrophobic antistatic layer 2 includes a polytetrafluoroethylene layer with an antistatic coating sprayed on its surface. Polytetrafluoroethylene has good hydrophobicity, and the addition of the antistatic coating reduces static electricity residue and prevents water accumulation and dust buildup. The thermally conductive layer 1 includes a polyimide layer, which has good thermal conductivity and transparency. The first flexible transparent film 5, the second flexible transparent film 7, and the third flexible transparent film 9 are all made of polyethylene terephthalate, which has excellent transparency and elasticity, and serves to buffer and prevent moisture from entering.

[0030] In this embodiment, the thickness of the AF anti-fingerprint film can be set to 0.5~3mm, preferably 1~1.5mm. The thickness of the hydrophobic antistatic layer can be controlled to be 5~50μm. The thickness of the thermally conductive layer can be controlled to be 50~200μm, preferably 50~100μm. The thicknesses of the first flexible transparent film, the second flexible transparent film, and the third flexible transparent film can be controlled to be 10~150μm, preferably 20~100μm. The thicknesses of the base film layer, the anti-fingerprint film sheet, the pressure-sensitive adhesive layer, the release layer, etc., can be set according to actual needs and conventional methods in the art.

[0031] The AF anti-fingerprint film of this embodiment can be installed on the windows, rearview mirrors, interior parts, or touch screens of motor vehicles, such as new energy vehicles. The first flexible transparent film 5 and the second flexible transparent film 7 are filled between the base film layer 6 and the anti-fingerprint film sheet 8, serving as a protective layer between the anti-fingerprint film sheet 8 and the base film layer 6. This reduces damage to the anti-fingerprint film sheet 8 from direct friction, absorbs and disperses impact forces, protects the anti-fingerprint film sheet 8 and the base film layer 6 from external impact damage, and improves the overall impact resistance of the film layer. By adding a hydrophobic antistatic layer 2 to the surface, the hydrophobicity of the surface is improved, reducing surface water stains. Combined with the antistatic coating, static electricity storage is reduced, and dust residue is reduced, effectively improving the performance of the anti-fingerprint film sheet 8. The heat-conducting layer 1 conducts heat from the touch screen and rearview mirror. Thermal stress caused by temperature differences between the screen and the base film layer 6 can lead to screen deformation or damage. The thermally conductive transparent film helps reduce thermal stress and maintain the flatness of the screen.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An AF anti-fingerprint film for motor vehicles, characterized in that, include: The following layers are stacked sequentially along a specified direction: release layer (4), pressure-sensitive adhesive layer (3), thermally conductive layer (1), first flexible transparent film (5), base film layer (6), second flexible transparent film (7), anti-fingerprint film sheet (8), and hydrophobic antistatic layer (2). And a third flexible transparent film (9), which at least covers the sidewalls of the anti-fingerprint film sheet (8); Furthermore, the heat-conducting layer (1) also extends continuously to cover the sidewalls of the first flexible transparent film (5), the base film layer (6), the second flexible transparent film (7), and the third flexible transparent film (9).

2. The AF anti-fingerprint film for motor vehicles according to claim 1, characterized in that: The third flexible transparent film (9) continuously covers the sidewalls of the anti-fingerprint film (8) and the hydrophobic antistatic layer (2).

3. The AF anti-fingerprint film for motor vehicles according to claim 2, characterized in that: The third flexible transparent film (9) has its side surface close to the heat-conducting layer (1) flush with the sidewalls of the base film layer (6), the second flexible transparent film (7), and the anti-fingerprint film (8).

4. The AF anti-fingerprint film for motor vehicles according to claim 1, characterized in that: The thermally conductive layer (1) extends continuously to form a cylindrical structure with one end open. The first flexible transparent film (5), the base film layer (6), the second flexible transparent film (7), the anti-fingerprint film (8), the hydrophobic antistatic layer (2) and the third flexible transparent film (9) are all disposed inside the cylindrical structure.

5. The AF anti-fingerprint film for motor vehicles according to claim 4, characterized in that: The outer wall of the cylindrical structure is flush with the sidewalls of the release layer (4) and the pressure-sensitive adhesive layer (3) in the radial direction of the cylindrical structure.

6. The AF anti-fingerprint film for motor vehicles according to claim 1, characterized in that: The hydrophobic antistatic layer (2) includes a polytetrafluoroethylene layer with an antistatic coating sprayed on its surface.

7. The AF anti-fingerprint film for motor vehicles according to claim 1, characterized in that: The thermally conductive layer (1) includes a polyimide layer with a thickness of 50~200μm.

8. The AF anti-fingerprint film for motor vehicles according to claim 1, characterized in that: The first flexible transparent film (5), the second flexible transparent film (7) and the third flexible transparent film (9) are all made of polyethylene terephthalate with a thickness of 10~150μm.

9. The AF anti-fingerprint film for motor vehicles according to claim 1, characterized in that: The thickness of the AF anti-fingerprint film is 0.5~3mm.

10. An anti-fingerprint film for motor vehicles according to claim 1, characterized in that: The AF anti-fingerprint film is applied to the vehicle's windows, rearview mirrors, interior trim, or touchscreen.

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