UV curing film

Abstract

The utility model discloses a UV (ultraviolet) curing film which comprises a high-temperature protective film with the thickness of 5-15 microns; the thickness of the AR film is 20-50 [mu] m; the adhesive force of the UVOCA adhesive film to the PET base material is 3000-3500 gf / in, and the thickness of the UVOCA adhesive film is 40-90 microns; the thickness of the PET base material is 20-50 [mu] m; the stripping force of the silica gel coating on AF glass is 20-50 gf / in, and the thickness of the silica gel coating is 10-50 microns; the release force of the fluorine release film is 2-8 gf / in, and the thickness of the fluorine release film is 50-100 microns. The UV curing film is simple in structure, through good thickness control and design scheme, the UV curing film has better application performance and comfort in application of electronic products, the optical display effect is better, meanwhile, the thickness of an adhesive layer is controlled, residual adhesive is not prone to occurring when the adhesive layer is removed due to excessive adhesion, and the service life of the UV curing film is prolonged. And large-scale application and rapid maintenance in production and maintenance of the electronic equipment are facilitated.

Description

Technical Field

[0001] The utility model relates to an adhesive technology, in particular to a UV curing film. Background Art

[0002] UV light-curing film is a special film material that uses ultraviolet radiation to cure. It is a polymer material that can cause its molecular chains to undergo cross-linking reactions through ultraviolet radiation, thereby forming a strong film. UV light-curing film has the characteristics of fast curing, high efficiency, and low energy consumption, and is widely used in many industries. The principle of UV light-curing film is to use ultraviolet radiation to cause the photoinitiator in the film material to undergo a photochemical reaction, thereby initiating a cross-linking reaction of the polymer molecular chains. Existing UV-curing film is generally a layer of UVOCA glue directly coated or transferred on the back of the AR film, and then a release film is attached. The client adheres the film to the screen and irradiates it with UV light of a specific wavelength for a certain period of time before it can be used normally. However, such UV-curing film is prone to adverse effects such as nail marks and scratches during use, especially the conventional thickness design currently used is likely to affect the optical effect and comfort of the screen during application.

[0003] 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. Summary of the Invention

[0004] The purpose of the utility model is to provide a UV curing film.

[0005] To achieve the above-mentioned objectives, the embodiments of the present invention provide a UV curing film, including a high-temperature protective film with a thickness of 5-15 μm; an AR film with a thickness of 20-50 μm; a UVOCA film with an adhesion force of 3000-3500 gf / in to a PET substrate and a thickness of 40-90 μm; a PET substrate with a thickness of 20-50 μm; a silicone coating with a peeling force of 20-50 gf / in to AF glass and a thickness of 10-50 μm; and a fluorine release film with a release force of 2-8 gf / in and a thickness of 50-100 μm.

[0006] In one or more embodiments of the present invention, the thickness ratio of the AR film, the UVOCA film, the PET substrate, and the silicone coating is (1-2):(1-3):(0.4-2):1.

[0007] In one or more embodiments of the present invention, the thickness ratio of the AR film, the UVOCA film, the PET substrate, and the silicone coating is 1:2:1:1.

[0008] In one or more embodiments of the present invention, the thickness of the fluorine release film is 50 μm.

[0009] In one or more embodiments of the present invention, the thickness of the silicone coating is 25 μm.

[0010] In one or more embodiments of the present invention, the thickness of the PET substrate is 25 μm.

[0011] In one or more embodiments of the present invention, the thickness of the UVOCA film is 50 μm.

[0012] In one or more embodiments of the present invention, the thickness of the AR film is 25 μm.

[0013] In one or more embodiments of the present invention, the thickness of the high-temperature protection film is 10 μm.

[0014] Compared with the existing technology, the UV curing film according to the embodiment of the utility model has a simple structure. Through good thickness control and design scheme, the UV curing film has better application performance and comfort in the application of electronic products, and the optical display effect is better. At the same time, the thickness of the adhesive layer is controlled, and it is less likely to be excessively adhered, resulting in residual adhesive when removed, which is more conducive to large-scale application and rapid maintenance in the production and maintenance of electronic equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram according to one embodiment of the present invention. DETAILED DESCRIPTION

[0016] The specific implementation methods of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific implementation methods.

[0017] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations such as "include" or "comprising", etc., will be understood to include the stated elements or components but not to exclude other elements or other components.

[0018] Including but not limited to the following embodiments, the structural materials are as follows: the high temperature protective film is Shenzhen Xindongyang Technology XDY002, the AR film is obtained by alternately stacking multiple layers of silicon dioxide film with a thickness of 80-100 nm and multiple layers of silicon nitride film with a thickness of 10-20 nm, UVOCA film (obtained by coating the following glue: 400.00 g of polyacrylate resin, 1000.00 g of methacrylate monomer diluent (acrylic polyurethane, methyl methacrylate, octadecyl acrylate in a mass ratio of 2:1:1), 1.00 g of photoinitiator (benzoin isopropyl ether), 6.50 g of ultraviolet absorber (2,2-dihydroxy-4-methoxybenzophenone), 0.12 g of light stabilizer (monobenzoic acid resorcinol ester), 1.6 g of coupling agent (vinyl tris-1-hydroxybenzoyl ester ...1.00 g of photoinitiator (benzoin isopropyl ether), S2, vacuum degassing the mixture A, and evacuating the vacuum for 30 minutes at a vacuum degree of -0.1 MPa to obtain an adhesive liquid for the UV-resistant OCA optical adhesive layer), a silicone coating (obtained by coating the following adhesive liquid: the silicone coating is composed of the following raw materials in parts by weight: 80 parts of silicone, 1.6 parts of adhesive, and 0.08 parts of thickener; the average pore spacing of the silicone is 2.45-2.85 nm, the surface area is 680-720 m2 / g, the pore volume is 0.36-0.38 ml / g, the thickener is 1000 mm2 / s of carboxymethyl cellulose, and the adhesive is a water-based acrylic resin), the fluorine release film is made of Dongguan Zhanqian FS075, and the PET substrate is provided by Yingbo New Materials.

[0019] like Figure 1 As shown, the UV curing film according to the preferred embodiment of the present invention includes a high-temperature protective film 1 with a thickness of 5-15 μm; an AR film 2 with a thickness of 20-50 μm; a UVOCA adhesive film 3 with an adhesion force of 3000-3500 gf / in to a PET substrate and a thickness of 40-90 μm; a PET substrate 4 with a thickness of 20-50 μm; a silicone coating 5 with a peeling force of 20-50 gf / in to AF glass and a thickness of 10-50 μm; and a fluorine release film 6 with a release force of 2-8 gf / in and a thickness of 50-100 μm.

[0020] Production steps:

[0021] Remove the light release liner from the self-developed UVOCA film (with heavy and light release liner) and apply it to the back of the AR film with high-retention film. Remove the heavy release liner from the semi-finished product and apply it to the prepared high-temperature resistant PET substrate. Apply a layer of silicone glue evenly to the PET substrate and bake it in a 130°C oven for 5 minutes. After baking, apply a layer of fluorine release film to obtain a UV-curable film.

[0022] Prepare samples corresponding to Examples 1-5, and test and compare the samples with two commercially available UV curing films (the blue light UV curing film purchased from Shenzhen Tuoli Electronics is comparative example 1, and the TPU anti-peeping square film purchased from Shenzhen Wotuo Electronics is comparative example 2):

[0023]

[0024] Place the sample on the test glass plate, remove the high-protection film on the surface of the AR film, and irradiate it with a handheld LED UV lamp for 2 minutes. Perform the following tests under the same conditions:

[0025] 1. Pencil hardness and water boiling

[0026]

[0027]

[0028] Note: Pencil hardness is measured using 3H and 2H pencils with a 500g weight. Scratch the sample five times at random locations with a minimum length of 3cm using a pencil hardness tester. No score is awarded for any scratches; one point is awarded for each absence of a scratch. Boil in water at 80°C for one hour and observe any changes in appearance.

[0029] 2. Optical testing

[0030] Test items Transmittance Haze b* value Example 1 93.57 1.19 0.08 Example 2 93.57 0.91 0.07 Example 3 93.49 1.01 0.05 Example 4 93.53 1.05 0.06 Example 5 93.61 0.96 0.08 Comparative Example 1 92.49 0.95 0.06 Comparative Example 2 94.31 1.15 0.06

[0031] Note: Transmittance and haze are tested with a haze meter; b* value is tested with a colorimeter.

[0032] According to the above experimental results, we can see that:

[0033] 1. Optical data: Samples 1 to 5 of the present invention and the comparative example samples are basically consistent.

[0034] 2. Pencil hardness: The test results under 2H500g conditions are consistent, and the 3H500g solution of the utility model is better than the comparative example.

[0035] 3. Boiled in water at 80℃: The product of the utility model showed no abnormality after being boiled in water for 1 hour, while the control product showed whitening.

[0036] The foregoing descriptions of specific exemplary embodiments of the present invention are for purposes of illustration and description. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is apparent that many modifications and variations are possible in light of the foregoing teachings. The exemplary embodiments have been selected and described for the purpose of explaining the specific principles of the present invention and their practical application, thereby enabling those skilled in the art to realize and utilize a variety of exemplary embodiments of the present invention and various options and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A UV curing film, characterized in that include High temperature protective film, thickness of 5-15μm; AR film, thickness of 20 to 50 μm; UVOCA film has an adhesion of 3000-3500 gf / in to PET substrate and a thickness of 40-90 μm; PET substrate, thickness of 20-50μm; Silicone coating, peeling force on AF glass is 20-50gf / in, thickness is 10-50μm; Fluorine release film has a release force of 2-8gf / in and a thickness of 50-100μm.

2. The UV curable film according to claim 1, wherein The thickness ratio of the AR film, UVOCA film, PET substrate and silicone coating is (1-2): (1-3): (0.4-2):

1.

3. The UV curable film according to claim 2, wherein The thickness ratio of the AR film, UVOCA film, PET substrate and silicone coating is 1:2:1:

1.

4. The UV curable film according to claim 1, wherein The thickness of the fluorine release film is 50 μm.

5. The UV curable film according to claim 3, wherein The thickness of the silica gel coating is 25 μm.

6. The UV curable film according to claim 3, wherein The thickness of the PET substrate is 25 μm.

7. The UV curable film according to claim 3, wherein The thickness of the UVOCA film is 50 μm.

8. The UV curable film according to claim 3, wherein The thickness of the AR film was 25 μm.

9. The UV curing film according to claim 8, wherein The thickness of the high-temperature protective film is 10 μm.

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