Anti-UV protective film for car lamp

By using a multi-layered automotive lighting film, including PET film, acrylic pressure-sensitive adhesive, benzotriazole UV absorber, and conductive polymer coating, the problems of aging and dust adsorption under ultraviolet light are solved, achieving anti-UV, anti-static, and heat insulation effects, and extending the service life of automotive lights.

CN223547941UActive Publication Date: 2025-11-14QUANZHOU XIANG KE HI-TECH MATERIAL TECH CO LTD
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Patent Information

Application Number
CN202423125543.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-18
Publication Date
2025-11-14
Estimated Expiration
2034-12-18

AI Technical Summary

Technical Problem

Existing automotive headlight films are prone to aging and yellowing when exposed to ultraviolet light for extended periods, and their surfaces easily attract dust, affecting light clarity and cleanliness.

Method used

Using PET film as the substrate layer, combined with an acrylic pressure-sensitive adhesive layer, a benzotriazole UV absorber coating, a siloxane resin coating, and a conductive polymer coating, and further enhanced with a nano-ceramic particle coating to reflect infrared rays, a multi-layer structure is formed to provide UV protection, antistatic properties, and thermal insulation.

Benefits of technology

It effectively prevents headlight aging, reduces dust accumulation, maintains transparency and light clarity, extends headlight life, and reduces thermal stress.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an anti-UV (ultraviolet) protective film for a car lamp, which relates to the technical field of car lamp films and comprises a base material layer, a primer layer fixedly arranged at one layer end of the base material layer and fixedly attached, an anti-UV coating and a hard coating sequentially attached and fixed at the other layer end of the base material layer, and an anti-static treatment layer attached and fixed outside the hard coating, the heat insulation layer is fixedly arranged between the base material layer and the anti-UV coating in an attached mode; the heat insulation layer is a nano ceramic particle coating; the utility model has the advantages that the anti-static treatment layer is arranged on the surface of the hard coating, so that the dust attachment is greatly reduced, and the definition is kept; the transparency provided by the conductive polymer coating is good, and the clarity is kept; the heat insulation layer is additionally arranged between the base material layer and the anti-UV coating, so that heat transferred to the automobile lamp can be reduced, the thermal stress of the automobile lamp is reduced, and the service life is prolonged; the whole material is high in transparency and good in light-transmitting use effect.
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Description

Technical Field

[0001] This utility model relates to the field of automotive lamp film technology, and more specifically to an anti-UV protective film for automotive lamps. Background Technology

[0002] The main purpose of using anti-UV (ultraviolet) protective film on car lights is to extend the life of the car lights and maintain their good working condition. Long-term exposure to sunlight, especially strong ultraviolet radiation, may cause the car light housing material (such as plastic) to age, yellow, or even crack, affecting the appearance and reducing the brightness and penetration of the light, thereby affecting driving safety.

[0003] Existing automotive lamp films [as shown in publication number: CN215473699U, an automotive lamp film with a repair coating on the surface] use an anti-ultraviolet layer to protect the lamps and a protective layer to protect the anti-ultraviolet layer.

[0004] When automotive headlight film is used, it is directly exposed to the air and covers the headlight lens. The surface is prone to static electricity due to friction (such as when the headlight protective film comes into contact with particles and dust in the air while the car is in motion). This will attract dust and have the disadvantage of affecting the clarity and cleanliness of the headlight. Utility Model Content

[0005] The purpose of this utility model is to provide an anti-UV protective film for vehicle lights in order to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] This utility model proposes an anti-UV protective film for automotive lights, including a substrate layer, a base adhesive layer fixedly attached to one end of the substrate layer, and an anti-UV coating and a hard coating sequentially attached to the other end of the substrate layer, and also includes an anti-static treatment layer attached to the outside of the hard coating.

[0008] As a preferred embodiment of the present invention, the invention further includes a heat insulation layer, which is bonded and fixed between the substrate layer and the UV-resistant coating.

[0009] In a preferred embodiment of this invention, the substrate layer is a PET film layer.

[0010] As a preferred embodiment of this invention, the base layer is an acrylic pressure-sensitive adhesive layer.

[0011] As a preferred embodiment of this invention, the heat insulation layer is a nano-ceramic particle coating.

[0012] As a preferred technical solution of this utility model, the anti-UV coating is a benzotriazole UV absorber coating.

[0013] As a preferred embodiment of this invention, the hard coating is a siloxane resin coating.

[0014] As a preferred embodiment of this invention, the antistatic treatment layer is a conductive polymer coating.

[0015] The beneficial effects of this utility model are as follows:

[0016] By applying an antistatic treatment layer to the surface of the hard coating, dust adhesion is greatly reduced to maintain clarity; the conductive polymer coating provides good transparency and maintains strong clarity; the addition of a heat insulation layer between the substrate layer and the anti-UV coating helps to reduce heat transfer to the headlights, thereby reducing the thermal stress of the headlights and increasing their service life; the overall material has high transparency and good light transmission performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure reference numerals: Substrate layer-1, Primer layer-2, Heat insulation layer-3, Anti-UV coating-4, Hard coating-5, Anti-static treatment layer-6. Detailed Implementation Example 1:

[0019] like Figure 1 As shown, this embodiment proposes: an anti-UV protective film for vehicle lights, including a substrate layer 1 and a base adhesive layer 2 fixedly attached to one end of the substrate layer 1, wherein the base adhesive layer 2 is provided at the bottom end of the substrate layer 1.

[0020] Among them, substrate layer 1 is a PET film layer, etc. (PET film has high transparency, good mechanical strength, good chemical resistance, etc.);

[0021] The base layer 2 is an acrylic pressure-sensitive adhesive layer, etc. (acrylic pressure-sensitive adhesive has excellent transparency, initial tack and holding power).

[0022] The UV-resistant coating 4 and the hard coating 5 are sequentially attached and fixed to the other end of the substrate layer 1. The UV-resistant coating 4 and the hard coating 5 are sequentially applied to the top of the substrate layer 1.

[0023] Among them, the UV-resistant coating 4 is a benzotriazole UV absorber coating, etc. (benzotriazole UV absorber coatings can effectively absorb or reflect ultraviolet rays to prevent the material at its bottom from aging).

[0024] Hard coating 5 is a silicone resin coating, etc. (Silicone resin coating provides excellent hardness, weather resistance and transparency to protect the underlying material layers).

[0025] It also includes an antistatic treatment layer 6 that is bonded and fixed to the outside of the hard coating 5. It can be set by spraying or other methods. During application, it greatly reduces the generation of static electricity and greatly reduces dust adhesion to maintain clarity.

[0026] Among them, the antistatic treatment layer 6 is a conductive polymer coating, etc. (the conductive polymer coating can be a polyaniline conductive polymer coating, etc., which can provide good conductivity without affecting transparency). Example 2:

[0027] like Figure 1 As shown, its difference from Embodiment 1 is that it also includes a heat insulation layer 3, which is bonded and fixed between the substrate layer 1 and the anti-UV coating 4. This can help reduce heat transfer to the vehicle lamp [by reflecting or absorbing infrared radiation from the external environment (such as direct sunlight), it can effectively reduce the temperature rise of the vehicle lamp surface and internal components caused by prolonged exposure to high temperatures, such as extending the life of sensitive electronic components such as LEDs] to reduce the thermal stress of the vehicle lamp and increase its service life.

[0028] Among them, the heat insulation layer 3 is a nano-ceramic particle coating, etc. (the nano-ceramic particle coating can be set on the substrate layer 1 by chemical vapor deposition, etc.); the nano-ceramic particle (such as indium tin oxide ITO) coating can effectively reflect infrared radiation, thereby achieving the heat insulation effect; and the light transmittance is good.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A UV-resistant protective film for automotive lights, comprising a substrate layer (1), a base adhesive layer (2) fixedly adhered to one end of the substrate layer (1), and a UV-resistant coating layer (4) and a hard coating layer (5) sequentially adhered to the other end of the substrate layer (1), characterized in that, It also includes an antistatic treatment layer (6) that is bonded and fixed to the outside of the hard coating (5).

2. The UV-resistant protective film for automotive lights according to claim 1, characterized in that, It also includes a heat insulation layer (3), which is bonded and fixed between the substrate layer (1) and the UV-resistant coating (4).

3. The UV-resistant protective film for automotive lights according to claim 1, characterized in that, The substrate layer (1) is a PET film layer.

4. The UV-resistant protective film for automotive lights according to claim 1, characterized in that, The base layer (2) is an acrylic pressure-sensitive adhesive layer.

5. The UV-resistant protective film for automotive lights according to claim 2, characterized in that, The heat insulation layer (3) is a nano-ceramic particle coating.

6. The UV-resistant protective film for automotive lights according to claim 1, characterized in that, The UV-resistant coating (4) is a benzotriazole UV absorber coating.

7. The UV-resistant protective film for automotive lights according to claim 1, characterized in that, The hard coating (5) is a siloxane resin coating.

8. The UV-resistant protective film for automotive lights according to claim 1, characterized in that, The antistatic treatment layer (6) is a conductive polymer coating.

Citation Information

Patent Citations

  • Automobile lamp film with repair coating on surface

    CN215473699U