Three-proofing film with composite structure for vehicle-mounted screen

Abstract

The utility model discloses a three-proofing film with a composite structure for a vehicle-mounted screen. The three-proofing film comprises a release layer, an adhesive layer, at least one supporting layer and a three-proofing layer which are sequentially laminated, wherein the supporting layer comprises a UV adhesive layer and a buffer layer, and the UV adhesive layer is located between the three-proofing layer and the buffer layer. The three-proofing film provided by the utility model can solve the problems of indentation and fingernail marks, is not easy to warp after being pasted on the vehicle-mounted screen glass cover plate, and has excellent use performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical films, in particular to a three-proof film for a vehicle-mounted screen with a composite structure. Background Art

[0002] Anti-glare, anti-reflection, and anti-fingerprint optical films are commonly used as protective films for consumer electronics. When used in automotive displays, these films can improve the transmittance and contrast of the display, ensuring a clear view for the driver while also reducing the impact of glare on the driver's vision and improving driving safety.

[0003] Existing three-proof films typically use adhesive bonding technology, using acrylic or silicone adhesive as the backing material. During use, the adhesive is used to adhere the three-proof film to the car screen. Although the current three-proof film has good performance in terms of anti-glare, anti-reflection, and anti-fingerprint, it is prone to indentation and fingernail marks in actual use, which reduces its effectiveness.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide a composite structure of a three-proof film for a vehicle screen, which can solve the problems of traditional three-proof films being prone to indentation, nail marks and warping.

[0006] In order to achieve the above-mentioned purpose, the technical solution provided by a specific embodiment of the present invention is as follows:

[0007] A composite structure of a three-proof film for a vehicle screen, comprising a release layer, an adhesive layer, at least one support layer and a three-proof layer stacked in sequence;

[0008] The supporting layer includes a UV adhesive layer and a buffer layer, and the UV adhesive layer is located between the three-proof layer and the buffer layer.

[0009] In one or more embodiments of the present invention, the buffer layer is made of PET.

[0010] In one or more embodiments of the present invention, the thickness of the UV adhesive layer is 15 to 40 μm.

[0011] In one or more embodiments of the present invention, the buffer layer has a thickness of 20 to 50 μm.

[0012] In one or more embodiments of the present invention, the adhesive layer is made of silicone; and / or,

[0013] The thickness of the adhesive layer is 10 to 25 μm; and / or,

[0014] The adhesive layer has an adhesive force of 500 to 1100 gf / in.

[0015] In one or more embodiments of the present invention, the triple anti-layer includes a hardening layer, a base material layer, an anti-glare layer, an anti-reflection layer and an anti-fingerprint layer stacked in sequence, and the hardening layer is arranged on the surface of the supporting layer.

[0016] In one or more embodiments of the present invention, the anti-glare layer contains anti-glare particles, and the anti-glare particles are selected from one or more of silicon oxide, aluminum oxide, magnesium silicate, calcium carbonate and magnesium carbonate.

[0017] In one or more embodiments of the present invention, the hardened layer has a thickness of 1 to 3 μm; and / or,

[0018] The thickness of the substrate layer is 20 to 100 μm; and / or,

[0019] The anti-glare layer has a thickness of 1 to 3 μm; and / or,

[0020] The anti-reflection layer has a thickness of 1 to 3 μm; and / or

[0021] The anti-fingerprint layer has a thickness of 1 to 3 μm.

[0022] In one or more embodiments of the present invention, the release layer is a fluorine release film; and / or,

[0023] The release layer has a thickness of 50 to 75 μm; and / or

[0024] The release force of the release layer is 1 to 8 gf / in.

[0025] In one or more embodiments of the present invention, a protective layer is further provided on the surface of the triple-proof layer. The material of the protective layer is PET and the thickness is 25 to 75 μm.

[0026] Compared with the existing technology, the three-proof film in the present invention is provided with a UV adhesive layer and a buffer layer on one side of the three-proof layer, and utilizes the shaping effect of the UV adhesive layer and the buffering effect of the buffer layer on the pressing force, so that the three-proof film is not prone to problems such as indentation and nail marks. At the same time, combined with the adhesive layer, the three-proof film can be stably adhered to the car screen glass cover, reducing the occurrence of warping problems and effectively improving the performance of the three-proof film. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a schematic structural diagram of a composite structure of a three-proof film for a vehicle screen in one embodiment of the present invention;

[0029] Figure 2 This is a schematic structural diagram of the three-protection layer in one embodiment of the present invention.

[0030] Figure 3 This is a schematic diagram of a composite structure of a three-proof film for a vehicle screen attached to a glass cover plate of a vehicle screen in one embodiment of the present invention.

[0031] Description of main reference numerals:

[0032] 1. Release layer; 2. Adhesive layer; 3. UV adhesive layer; 4. Buffer layer; 5. Triple-proof layer; 51. Hardening layer; 52. Base material layer; 53. Anti-glare layer; 54. Anti-reflection layer; 55. Anti-fingerprint layer; 6. Protective layer; 7. Car screen glass cover. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0034] The three-proof film for a vehicle-mounted screen of the utility model has a composite structure and comprises, from bottom to top, a release layer, an adhesive layer, a support layer and a three-proof layer.

[0035] In one embodiment, the release layer is a fluorine release film having a thickness of 50 to 75 μm and a release force of 1 to 8 gf / in. Selecting such a fluorine release film as the release layer facilitates peeling the release layer and reduces the possibility of adhesion between the release layer and the adhesive layer, thereby damaging the adhesive layer.

[0036] In one embodiment, the adhesive layer is made of silicone, has a thickness of 10 to 25 μm, and a release force of 500 to 1100 gf / in. Using silicone to form the adhesive layer ensures that the adhesive layer can be effectively adhered to the vehicle display, reducing the risk of warping and debonding.

[0037] In one embodiment, the support layer includes a UV adhesive layer and a buffer layer. The UV adhesive layer is located between the three-proof layer and the buffer layer. The buffer layer is made of PET.

[0038] Specifically, the UV adhesive layer is formed by UV-curing acrylic adhesive. After UV light curing, the UV adhesive layer changes from a soft adhesive layer to a hard adhesive layer, which plays a shaping role. The buffer layer can buffer the pressure exerted on the three-proof film. The combined effect of the UV adhesive layer and the buffer layer can reduce the problems of indentation and nail marks on the three-proof film. At the same time, PET (polyethylene terephthalate) has the characteristics of high temperature resistance, low shrinkage, high transmittance and low haze, which can ensure that the three-proof film has good performance.

[0039] In one embodiment, the thickness of the UV adhesive layer is 15-40 μm, and the thickness of the buffer layer is 20-50 μm. Appropriate thickness helps improve the performance of the three-proof film.

[0040] In one embodiment, the support layer is provided with at least one layer. According to actual needs, the support layer can be provided with multiple layers to better solve the problem of indentation of the three-proof film.

[0041] In one embodiment, the triple anti-layer includes a hardening layer, a base material layer, an anti-glare layer, an anti-reflection layer and an anti-fingerprint layer stacked in sequence, and the hardening layer is disposed on the surface of the support layer.

[0042] Specifically, the hardening layer and the anti-glare layer are both formed by coating acrylic resin. The anti-glare layer contains anti-glare particles, and the anti-glare particles are selected from one or more of silicon oxide, aluminum oxide, magnesium silicate, calcium carbonate and magnesium carbonate. Adding anti-glare particles to the anti-glare layer can reduce the generation of glare. The base material of the substrate layer is TAC (cellulose triacetate). The anti-reflection layer can be made of commonly used materials in the field, such as niobium oxide, which can be made by magnetron sputtering process. The anti-fingerprint layer is formed by coating AF anti-fingerprint coating liquid.

[0043] In one embodiment, the hardening layer has a thickness of 1-3 μm; the base material layer has a thickness of 20-100 μm; the anti-glare layer has a thickness of 1-3 μm; the anti-reflection layer has a thickness of 1-3 μm; and the anti-fingerprint layer has a thickness of 1-3 μm. Selecting appropriate thicknesses for the three-proofing layer ensures that the film has excellent anti-reflection, anti-glare, and anti-fingerprint properties.

[0044] In one embodiment, a protective layer is provided on the surface of the three-proof layer. The protective layer is made of PET and has a thickness of 25 to 75 μm. The protective layer can protect the three-proof film and reduce the possibility of damage to the three-proof film due to high temperatures during the preparation process.

[0045] The present invention is further described in detail below with reference to specific embodiments.

[0046] Example

[0047] like Figure 1 and Figure 2 As shown, the composite structure of the three-proof film for vehicle screens includes, from bottom to top, a release layer 1 with a thickness of 50μm, an adhesive layer 2 with a thickness of 15μm, a buffer layer 4 with a thickness of 25μm, a UV adhesive layer 3 with a thickness of 25μm, a buffer layer 4 with a thickness of 25μm, a UV adhesive layer 3 with a thickness of 25μm, a hardening layer 51 with a thickness of 25μm, a base material layer 52 with a thickness of 25μm, an anti-glare layer 53 with a thickness of 2μm, an anti-reflection layer 54 with a thickness of 2μm, an anti-fingerprint layer 55 with a thickness of 2μm and a protective layer 6 with a thickness of 50μm. Among them, the release layer 1 is a fluorine release film with a release force of 5gf / in; the adhesive layer 2 is formed by coated silicone and has a bonding force of 800gf / in; the buffer layer 4 is made of PET, the hardening layer 51 and the anti-glare layer 53 are both formed by coated acrylic resin, and the anti-glare layer 53 contains silicon oxide particles; the base layer 52 is made of TAC; the anti-reflection layer 54 is a niobium oxide layer; and the protective layer 6 is made of PET.

[0048] Four samples of the three-component film from the example were randomly selected for comparative testing against two different commercially available three-component films. The samples of the three-component film from the present invention were prepared by using a die-cutter to cut the film to the size matching the test vehicle glass model. The release layer was removed and the film was applied to the test vehicle glass screen. The protective layer on the film was removed and applied using a vacuum laminator. A degassing machine was used to remove the bubbles. The three-component film from the present invention required close exposure to a handheld LED UV lamp for 2 minutes before testing; the commercially available product did not require UV exposure.

[0049] (1) Pencil hardness test: 3H and 2H pencils are used for pencil hardness test, with a weight of 500g. A pencil hardness tester is used to scratch the sample at random positions 5 times, with a length of not less than 3cm. No score is given if there is a scratch, and one point is given if there is no scratch.

[0050] (2) High temperature and high humidity test: Place the sample in an environmental reliability test box at a temperature of 85°C and a humidity of 85%, and observe and record the changes in appearance at different time points.

[0051] Table 1 Pencil hardness test

[0052] Test items Test conditions Sample 1 Sample 2 Sample 3 Sample 4 Commercial sample 1 Commercial sample 2 Pencil hardness 2H500g 5 points 5 points 5 points 5 points 4 points 5 points Pencil hardness 3H500g 5 points 5 points 4 points 4 points 3 points 2 points

[0053] Table 2 High temperature and high humidity test results

[0054] time Sample 1 Sample 2 Sample 3 Sample 4 Commercial sample 1 Commercial sample 2 Day 3 No abnormalities No abnormalities No abnormalities No abnormalities No abnormalities No abnormalities Day 7 No abnormalities No abnormalities No abnormalities No abnormalities White edges No abnormalities Day 10 No abnormalities No abnormalities No abnormalities No abnormalities Warping White edges Day 15 No abnormalities No abnormalities No abnormalities No abnormalities Warping Warping Day 20 No abnormalities No abnormalities No abnormalities No abnormalities Warping Warping Day 30 No abnormalities No abnormalities No abnormalities No abnormalities Warping Warping

[0055] As can be seen from Tables 1 and 2, in the pencil hardness test, the three-proof film of the present invention outperforms commercially available samples under the 3H500g test conditions. In the high temperature and high humidity test, the three-proof film of the present invention can last for 30 days without abnormalities, yellowing, or warping.

[0056] It will be apparent 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 essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0057] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. The composite structure of the three-proof film for vehicle screens is characterized by: It includes a release layer, an adhesive layer, at least one support layer and a three-proof layer stacked in sequence; The supporting layer includes a UV adhesive layer and a buffer layer, and the UV adhesive layer is located between the three-proof layer and the buffer layer.

2. The composite structure three-proof film for vehicle screen according to claim 1, characterized in that: The buffer layer is made of PET.

3. The composite structure three-proof film for vehicle screen according to claim 1, characterized in that: The thickness of the UV adhesive layer is 15-40 μm.

4. The composite structure three-proof film for vehicle screen according to claim 1, characterized in that: The thickness of the buffer layer is 20-50 μm.

5. The composite structure three-proof film for vehicle screen according to claim 1, characterized in that: The adhesive layer is made of silicone; and / or The thickness of the adhesive layer is 10-25 μm; and / or, The adhesive layer has an adhesive force of 500-1100 gf / in.

6. The composite structure three-proof film for vehicle screen according to claim 1, characterized in that: The three-proof layer includes a hardening layer, a base material layer, an anti-glare layer, an anti-reflection layer and an anti-fingerprint layer stacked in sequence, and the hardening layer is arranged on the surface of the supporting layer.

7. The composite structure three-proof film for vehicle screen according to claim 6, characterized in that: The anti-glare layer contains anti-glare particles, and the anti-glare particles are selected from one of silicon oxide, aluminum oxide, magnesium silicate, calcium carbonate and magnesium carbonate.

8. The composite structure three-proof film for vehicle screen according to claim 6, characterized in that: The hardened layer has a thickness of 1 to 3 μm; and / or The thickness of the substrate layer is 20-100 μm; and / or, The anti-glare layer has a thickness of 1 to 3 μm; and / or, The anti-reflection layer has a thickness of 1 to 3 μm; and / or The anti-fingerprint layer has a thickness of 1-3 μm.

9. The composite structure three-proof film for vehicle screen according to claim 1, characterized in that: The release layer is a fluorine release film; and / or, The release layer has a thickness of 50 to 75 μm; and / or The release force of the release layer is 1-8 gf / in.

10. The composite structure three-proof film for vehicle screen according to claim 1, characterized in that: A protective layer is also provided on the surface of the three-proof layer. The material of the protective layer is PET and the thickness is 25~75μm.

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