Dimming film with ultraviolet ray isolation function

Abstract

The utility model relates to a dimming film with an ultraviolet isolation function, the dimming film comprises a first base material layer, a color-changing film layer and a second base material layer which are arranged in sequence, the side, facing the color-changing film layer, of the first base material layer and the side, facing the color-changing film layer, of the second base material layer are each provided with an adhesive layer, and the adhesive layers are anti-UV film layers; an anti-UV base material layer is arranged on one side, facing the anti-UV film layer, of the first base material layer; the anti-UV base material layer is arranged on the inner side of the first base material layer, the anti-UV film layers are arranged on the two sides of the color-changing film layer, overall ultraviolet isolation is carried out on the dimming film, and the dimming film has the effect of reducing damage to indoor or in-vehicle articles caused by ultraviolet irradiation in the environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of light control film, in particular to a light control film with ultraviolet isolation function. BACKGROUND

[0002] The light control film is a new type of electronic light control product. By controlling the external electric field, the light control film can quickly change between the colorless transparent state and the blue opaque state, realizing the dual requirements of glass light control and privacy protection. Specifically, the color-changing material of the light control film is suspended particles, which are dispersed in the polymer matrix in the form of micron-sized droplets. When the power is off, the suspended particles randomly arrange through Brownian motion and can absorb more than 99% of visible light. The appearance of the light control film shows a blue opaque state. When an electric field is applied, the suspended particles will align in a straight line under the action of the electric field and allow light to pass through, and the appearance of the light control film shows a transparent effect.

[0003] The light control film is usually applied to the car or the outer wall of the building. When the car is outdoors or the light control film is applied to the facade of the building, the ultraviolet light in the environment will penetrate the light control film and enter the car or the building. The light control film in the prior art can only adjust the transparency, but cannot prevent the penetration of ultraviolet light. Long-term exposure to ultraviolet light will cause the temperature in the car or the room to be too high and damage to the goods. CONTENT OF THE INVENTION

[0004] In order to solve the problem that the light control film cannot block ultraviolet light and cause damage to goods, the present application provides a light control film with ultraviolet isolation function.

[0005] The light control film with ultraviolet isolation function provided by the present application adopts the following technical solution:

[0006] The light control film with ultraviolet isolation function comprises a first substrate layer, a color-changing film layer and a second substrate layer arranged in sequence. The side of the first substrate layer facing the color-changing film layer and the side of the second substrate layer facing the color-changing film layer are both provided with an adhesive layer, the adhesive layer is an anti-UV film layer, and the side of the first substrate layer facing the anti-UV film layer is provided with an anti-UV substrate layer.

[0007] By adopting the above technical solution, the anti-UV substrate layer is arranged on the inner side of the first substrate layer, and the anti-UV film layer is arranged on both sides of the color-changing film layer, thereby achieving overall ultraviolet isolation of the light control film and reducing the probability of damage to indoor or vehicle goods caused by ultraviolet radiation in the environment.

[0008] Optionally, the first substrate layer comprises a double-silver magnetron sputtering film, which comprises a wear-resistant outer layer, a PET substrate layer and an energy-saving functional layer in sequence from the outside to the inside.

[0009] By adopting the above technical solution, a wear-resistant outer layer is formed on the PET substrate using magnetron sputtering technology, thereby improving the high transmittance to visible light and the high barrier reflectivity to infrared and ultraviolet rays.

[0010] Optionally, the anti-UV substrate layer includes an anti-UV substrate PET layer, the energy-saving functional layer is provided with a pressing adhesive layer on the side facing the anti-UV substrate PET layer, and the anti-UV substrate PET layer is connected to one side of the pressing adhesive layer.

[0011] By adopting the above technical solution and providing an anti-UV substrate PET layer, anti-ultraviolet performance is provided, and the double PET substrate layers enhance the overall strength of the double silver magnetron sputtering film.

[0012] Optionally, a pressure-sensitive adhesive layer that is easy to construct is provided on the side of the UV-resistant PET substrate layer facing the color-changing film layer, and the UV-resistant film layer is connected to one side of the pressure-sensitive adhesive layer.

[0013] By adopting the above technical solution, the pressure-sensitive adhesive has good transparency, good viscosity and adhesion, and is convenient for pasting operation.

[0014] Optionally, the anti-UV film layer is an anti-UV EVA film, and a UV absorber is added to the anti-UV EVA film.

[0015] By adopting the above technical solution, the EVA film has good transparency and reprocessing performance, and the addition of UV absorber enhances the anti-ultraviolet performance of the EVA film, resulting in a better anti-ultraviolet effect.

[0016] Optionally, the second substrate layer includes a water vapor barrier film, which includes a magnetron sputtering waterproof layer, a PET substrate layer and a pressing adhesive layer from the outside to the inside, and the pressing adhesive layer is connected to one side of the anti-UV film layer.

[0017] By adopting the above technical solution and setting a magnetron sputtering waterproof layer, the overall waterproof performance of the dimming film is improved, and the problem of dimming performance degradation caused by water vapor intruding into the color-changing layer after long-term use of the dimming film is reduced.

[0018] Optionally, the color-changing film layer includes an ITO-coated PET layer and a color-changing material layer, the ITO-coated PET layer is arranged on two opposite sides of the color-changing material layer, and the anti-UV film layer is connected to the side of the ITO-coated PET layer facing away from the color-changing material layer.

[0019] By adopting the above technical solution, the ITO-coated PET layer has high transmittance and good electrical conductivity, which is beneficial to the dimming operation of the color-changing material.

[0020] Optionally, a backing adhesive is provided on the side of the wear-resistant outer layer facing away from the PET substrate layer.

[0021] By adopting the above technical solution, the dimming film is installed through the adhesive backing, and the dimming film is attached to the inner surface of the automobile glass or building glass in a fitting manner, which makes the subsequent replacement operation convenient.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By providing an anti-UV substrate layer inside the first substrate layer and anti-UV film layers on both sides of the color-changing film layer, the entire light-adjusting film is shielded from UV rays, reducing the probability of damage to indoor or vehicle items caused by ultraviolet radiation in the environment;

[0024] 2. Using double silver magnetron sputtering film as the first substrate layer improves the high transmittance of visible light and high blocking and reflectivity of infrared and ultraviolet rays, enhancing the functionality and durability of the dimming film;

[0025] 3. The anti-UV film layer is set to anti-UV EVA film, and UV absorber is added to further enhance the anti-ultraviolet performance of the dimming film, ensuring that it can still maintain good anti-ultraviolet effect after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the exploded structure of the dimming film of this application.

[0027] Figure 2 It is a cross-sectional view of the double silver magnetron sputtering film of the present application.

[0028] Figure 3 is a cross-sectional view of the water vapor barrier film of the present application.

[0029] Those skilled in the art will appreciate that the elements in the drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the size and position of some elements in the drawings may be exaggerated relative to other elements to help improve understanding of the embodiments of the present invention.

[0030] Figure numerals: 1. Double silver magnetron sputtering film; 11. Wear-resistant outer layer; 12. PET substrate layer; 13. Energy-saving functional layer; 14. Pressed adhesive layer; 15. Anti-UV substrate layer; 16. Pressure-sensitive adhesive layer; 2. Color-changing film layer; 21. ITOPET-coated layer; 22. Color-changing material layer; 3. Water vapor barrier film; 31. Magnetron sputtering waterproof layer; 4. Anti-UV film layer. DETAILED DESCRIPTION

[0031] The present application is further described in detail below with reference to the accompanying drawings.

[0032] The present application discloses a dimming film with ultraviolet light shielding function. Figure 1 The device comprises a first substrate layer, a color-changing film layer 2, and a second substrate layer, arranged in sequence. The first substrate layer and the second substrate layer are both provided with an adhesive layer on the side facing the color-changing film layer 2, and the adhesive layer is a UV-resistant film layer 4. The first substrate layer is provided with an anti-UV substrate layer 15 on the side facing the anti-UV film layer 4. By providing the anti-UV substrate layer 15 on the inner side of the first substrate layer and the anti-UV film layer 4 on both sides of the color-changing film layer 2, the multi-layered anti-UV structure effectively blocks ultraviolet rays, improving the UV resistance and durability of the dimming film.

[0033] Reference Figure 2 The first substrate layer includes a double silver magnetron sputtering film 1, which includes a wear-resistant outer layer 11, a PET substrate layer 12, and an energy-saving functional layer 13 from the outside to the inside. The wear-resistant outer layer 11 is formed on the PET substrate using magnetron sputtering technology. The wear-resistant outer layer 11 can be a polyester film or other wear-resistant material with good wear resistance and scratch resistance, improved high transmittance to visible light, and high barrier reflectivity to infrared and ultraviolet rays. The PET substrate layer 12 is a transparent polyester film with good light transmittance and mechanical strength. The energy-saving functional layer 13 can be a metal oxide coating, such as titanium dioxide, which has the ability to highly reflect infrared rays, thereby reducing heat transfer and improving energy efficiency.

[0034] Reference Figure 2 The UV-resistant substrate layer 15 includes a UV-resistant PET substrate layer. A pressing adhesive layer 14 is provided on the side of the energy-saving functional layer 13 facing the UV-resistant PET substrate layer, connecting the UV-resistant PET substrate layer to one side of the pressing adhesive layer 14. The UV-resistant PET substrate layer can be a polyester film containing an anti-UV additive, which has excellent UV resistance. The pressing adhesive layer 14 can be a transparent epoxy resin adhesive with good adhesion and transparency, ensuring a secure connection between the UV-resistant PET substrate layer and the energy-saving functional layer 13. The dual PET substrate layers 12 enhance the overall strength of the dual-silver magnetron sputtering film 1.

[0035] Reference Figure 2 The anti-UV substrate PET layer is provided with an easy-to-construct pressure-sensitive adhesive layer 16 on the side facing the color-changing film layer 2. The anti-UV film layer 4 is connected to one side of the pressure-sensitive adhesive layer 16. The pressure-sensitive adhesive has good transparency, viscosity and adhesion.

[0036] Reference Figure 1 The anti-UV film layer 4 is an anti-UV EVA film with good transparency and reprocessing performance. UV absorber is added to the anti-UV EVA film. The UV absorber can be a benzotriazole compound, which can effectively absorb ultraviolet rays and has a good anti-UV effect.

[0037] Reference Figure 3 The second substrate layer is a water vapor barrier film 3, which includes, from the outside to the inside, a magnetron sputtering waterproof layer 31, a PET substrate layer 12, and a pressure-sensitive adhesive layer 14. The magnetron sputtering waterproof layer 31 enhances the overall water resistance of the dimming film, reducing the problem of dimming performance degradation caused by water vapor intrusion into the color-changing layer after long-term use.

[0038] Reference Figure 1 The color-changing film layer 2 includes an ITO-coated PET layer and a color-changing material layer 22. The ITO-coated PET layer is disposed on opposite sides of the color-changing material layer 22. The UV-resistant EVA film is connected to the side of the ITO-coated PET layer facing away from the color-changing material layer 22. The ITO-coated PET layer can be a transparent conductive film with high transmittance and good conductivity, which facilitates the dimming operation of the color-changing material. The color-changing material layer 22 is an electrochromic material with good color-changing properties.

[0039] Reference Figure 2 The wear-resistant outer layer 11 is provided with adhesive on the side away from the PET substrate layer 12, which makes it easy to stick the dimming film on the inner surface of automobile glass or architectural glass, and the later replacement operation is convenient.

[0040] The implementation principle of the UV-blocking dimming film of this embodiment is as follows: through a multi-layered structural design, the dimming film effectively blocks UV rays at all levels. The dual-silver magnetron sputtering film 1 of the first substrate layer not only improves the wear resistance and energy efficiency of the dimming film, but also incorporates an anti-UV substrate layer 15 on its inner surface, further enhancing its UV resistance. The anti-UV film layer 4 provides additional UV protection on both sides of the color-changing film layer 2.

[0041] The water vapor barrier film 3 of the second substrate layer increases the waterproof performance of the dimming film and prolongs the service life of the dimming film.

[0042] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A dimming film with ultraviolet light shielding function, comprising a first substrate layer, a color-changing film layer (2) and a second substrate layer arranged in sequence, characterized in that: The first substrate layer is provided with an adhesive layer on the side facing the color-changing film layer (2) and the second substrate layer is provided with an adhesive layer on the side facing the color-changing film layer (2). The adhesive layer is an anti-UV film layer (4). The first substrate layer is provided with an anti-UV substrate layer (15) on the side facing the anti-UV film layer (4).

2. The UV-shielding film according to claim 1, wherein: The first substrate layer comprises a double silver magnetron sputtering film (1), and the double silver magnetron sputtering film (1) comprises, from the outside to the inside, a wear-resistant outer layer (11), a PET substrate layer (12), and an energy-saving functional layer (13).

3. The UV-shielding film according to claim 2, wherein: The anti-UV substrate layer (15) comprises an anti-UV substrate PET layer, the energy-saving functional layer (13) is provided with a pressing adhesive layer (14) on one side facing the anti-UV substrate PET layer, and the anti-UV substrate PET layer is connected to one side of the pressing adhesive layer.

4. The UV-shielding film according to claim 3, wherein: An easy-to-apply pressure-sensitive adhesive layer (16) is provided on the side of the UV-resistant substrate PET layer facing the color-changing film layer (2), and the UV-resistant film layer (4) is connected to one side of the pressure-sensitive adhesive layer (16).

5. The UV-shielding film according to claim 1, wherein: The anti-UV film layer (4) is an anti-UV EVA film, and a UV absorber is added to the anti-UV EVA film.

6. The UV-shielding film according to claim 1, wherein: The second substrate layer comprises a water vapor barrier film (3), and the water vapor barrier film (3) comprises, from the outside to the inside, a magnetron sputtering waterproof layer (31), a PET substrate layer (12), and a pressing adhesive layer (14), and the pressing adhesive layer (14) is connected to one side of the anti-UV film layer (4).

7. The UV-shielding film according to claim 1, wherein: The color-changing film layer (2) comprises an ITO-coated PET layer and a color-changing material layer (22), wherein the ITO-coated PET layer is arranged on two opposite sides of the color-changing material layer (22), and the anti-UV film layer (4) is connected to a side of the ITO-coated PET layer that is away from the color-changing material layer (22).

8. The UV-shielding film according to claim 2, wherein: A backing adhesive is provided on the side of the wear-resistant outer layer (11) facing away from the PET substrate layer (12).

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