Anti-glare film production method and anti-glare film

Abstract

The application discloses a kind of anti-glare film preparation method and anti-glare film, the anti-glare film preparation method includes the following steps: selecting substrate layer;First anti-glare liquid is coated on the surface of the substrate layer to form first anti-glare layer;Second anti-glare liquid is coated on the surface of the first anti-glare layer to form second anti-glare layer;The first anti-glare layer and second anti-glare layer on the substrate layer are cured to obtain anti-glare film.The anti-glare film preparation method of the embodiment of the application, by twice coating first anti-glare layer and second anti-glare layer and setting anti-glare particle in second anti-glare layer, so that the anti-glare particle of anti-glare film prepared by the method is gathered on the surface of anti-glare film, compared with once forming anti-glare film has better anti-glare effect.In addition, the anti-glare film prepared by the method has higher hardness and wear resistance.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of thin films, in particular to a method for preparing an anti-glare film and an anti-glare film. BACKGROUND

[0002] With the rapid development of electronic information industry, various portable electronic terminals and electronic products have gradually become an essential part of people's work and life. When electronic products with liquid crystal display panels are used in a relatively bright environment, the light from indoors and outdoors will be incident on the surface of the device, which will produce strong glare and affect the display effect of the screen. In order to suppress this situation, the surface of the liquid crystal display panel device needs to be treated for anti-glare. The current anti-glare treatment methods mainly include chemical etching method (mainly used for glass), spraying method and coating method, etc. After treatment, the surface of the material is uneven, thereby producing diffuse reflection to achieve anti-glare effect. However, the current method has the problem that anti-glare particles are deposited at the bottom of the anti-glare layer, and the surface of the anti-glare layer is insufficient in anti-glare particles, which will result in poor anti-glare effect. Moreover, the wear resistance of the anti-glare film is not high, and it is easy to be worn out.

[0003] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the background of the present application and should not be taken as an acknowledgement or any form of suggestion that this information forms prior art that is publicly known. SUMMARY

[0004] The present application aims to provide a method for preparing an anti-glare film and an anti-glare film, which can improve the external haze of the anti-glare film, so that the anti-glare effect of the anti-glare film is better and the hardness and wear resistance of the anti-glare film are higher.

[0005] To achieve the above-mentioned purpose, the embodiments of the present application provide a method for preparing an anti-glare film, which comprises the following steps: selecting a substrate layer; coating a first anti-glare liquid on the surface of the substrate layer to form a first anti-glare layer; coating a second anti-glare liquid on the side of the first anti-glare layer away from the substrate layer to form a second anti-glare layer; and curing the first anti-glare layer and the second anti-glare layer on the substrate layer to obtain an anti-glare film.

[0006] In one or more embodiments of the present application, the thickness of the first anti-glare layer is between 1 μm and 3 μm.

[0007] In one or more embodiments of the present application, the thickness of the second anti-glare layer is between 3 μm and 5 μm.

[0008] In one or more embodiments of the present application, the substrate layer is selected from one of PET, TAC, SRF and PC.

[0009] In one or more embodiments of the present application, the first anti-glare liquid comprises: resin: 25-35 parts by mass; photopolymerization initiator: 0-3 parts by mass; additive: 15-20 parts by mass; solvent: 45-55 parts by mass.

[0010] In one or more embodiments of the present application, the resin is selected from one or more of acrylate and epoxy acrylate polymers; and / or, the additive is amorphous silica; and / or, the solvent is selected from one or more of methanol and methyl isobutyl ketone.

[0011] In one or more embodiments of the present application, the second anti-glare liquid comprises: anti-glare particle: 15-25 parts by mass; resin: 10-20 parts by mass; solvent: 45-60 parts by mass.

[0012] In one or more embodiments of the present application, the anti-glare particle is a reaction product of dimethylhydroxyl terminated siloxane and silica; and / or, the resin is selected from one or more of acrylate, propylene glycol methyl ether acetate and acrylic polymer; and / or, the solvent is selected from one or more of 1-hydroxycyclohexyl phenyl ketone, methyl isobutyl ketone, propylene glycol methyl ether, toluene and styrene.

[0013] In one or more embodiments of the present application, the anti-glare particle has a particle size of between 1 μm and 3 μm.

[0014] Compared with the prior art, the anti-glare film preparation method according to the embodiments of the present application, by coating the first anti-glare layer and the second anti-glare layer and disposing the anti-glare particles in the second anti-glare layer, makes the anti-glare particles of the anti-glare film prepared by the method gather on the surface of the anti-glare film, which has better anti-glare effect than the anti-glare film prepared by one-time molding. In addition, the anti-glare film prepared by the method has higher hardness and wear resistance.

[0015] Another embodiment of the present application provides an anti-glare film prepared by the anti-glare film preparation method described above.

[0016] Compared with the prior art, the anti-glare film according to the embodiments of the present application has anti-glare particles gathered on the surface of the anti-glare film, which has better anti-glare effect and higher hardness and wear resistance of the anti-glare film. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of an anti-glare film preparation method according to an embodiment of the present application;

[0018] Figure 2 is a schematic diagram of an anti-glare film according to an embodiment of the present application.

[0019] MAIN REFERENCE NUMERALS EXPLANATION:

[0020] 1 - substrate layer, 2 - first anti-glare layer, 3 - second anti-glare layer. DETAILED DESCRIPTION

[0021] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present application is not limited by the specific embodiments.

[0022] Unless otherwise defined, all terms used in disclosing the application, including technical and scientific terms, terminology, will be interpreted according to the general accepted meaning in the technical field of the present application. The terminology used will not be interpreted in the meanings typically used in the legal field. Unless explicitly stated otherwise, all content in the present specification, including the definitions of the terms, will be understood as not being restricted to a given possible definition, but will be understood as applicable to all suitable definitions from the context of the respective term.

[0023] In the existing anti-glare layer preparation method, the anti-glare layer is usually formed by one-time coating of anti-glare liquid. The anti-glare particles in the anti-glare layer formed by one-time coating will deposit at the bottom of the anti-glare layer, resulting in fewer anti-glare particles on the surface of the anti-glare layer, so that there are not enough anti-glare particles to reduce the diffuse reflection on the surface of the anti-glare film.

[0024] As shown in FIG. 1, according to the preferred embodiment of the present application, a method for preparing an anti-glare film includes steps S1-S4. Figure 1 In step S1, a substrate layer 1 is selected.

[0025] Specifically, in step S1, the substrate layer 1 is selected from one of PET (polyethylene terephthalate), TAC (triacetyl cellulose), SRF (super complex refractive polyester film), and PC (polycarbonate).

[0026] In step S2, a first anti-glare liquid is coated on the surface of the substrate layer 1 to form a first anti-glare layer 2.

[0027] Specifically, in step S2, a first anti-glare liquid is coated on the surface of the substrate layer 1 to form a first anti-glare layer 2. The thickness of the first anti-glare layer 2 is between 1 μm and 3 μm. The thickness of the first anti-glare layer 2 is between 1 μm and 3 μm, which is beneficial to improve the hardness of the anti-glare film and reduce the internal haze of the first anti-glare layer. The first anti-glare liquid includes: resin: 25-35 parts by mass; photopolymerization initiator: 0-3 parts by mass; additive: 15-20 parts by mass; solvent: 45-55 parts by mass. Further, the resin in the first anti-glare liquid is selected from one or more of acrylate and epoxy acrylate polymer. The additive is amorphous silicon dioxide. The solvent is selected from one or more of methanol and methyl isobutyl ketone.

[0028] In step S3, a second anti-glare liquid is coated on the side of the first anti-glare layer 2 away from the substrate layer 1 to form a second anti-glare layer 3.

[0029]

[0030] ​Specifically, in step S3, the second anti-glare liquid is coated on the side of the first anti-glare layer 2 away from the substrate layer 1 to form the second anti-glare layer 3. The thickness of the second anti-glare layer 3 is between 3 μm and 5 μm. The thickness of the second anti-glare layer 3 is between 3 μm and 5 μm, which is advantageous to reduce the internal haze and increase the external haze. The second anti-glare liquid comprises: anti-glare particles: 15-25 parts by mass; resin: 10-20 parts by mass; solvent: 45-60 parts by mass. Further, in the second anti-glare liquid, the anti-glare particles are the reaction product of dimethylhydroxyl-terminated siloxane and silicon dioxide. In order to achieve better anti-glare effect, the particle size of the anti-glare particles is between 1 μm and 3 μm. The resin is selected from one or more of acrylate, propylene glycol methyl ether acetate and acrylic polymer. The solvent is selected from one or more of 1-hydroxycyclohexyl phenyl ketone, methyl isobutyl ketone, propylene glycol methyl ether, toluene and styrene. In addition, in an embodiment, compared with the components of the second anti-glare liquid, the first anti-glare liquid can only lack anti-glare particles compared with the second anti-glare liquid, and the other components are the same.

[0031] The components of the first anti-glare layer 2 lack anti-glare particles compared with the components of the second anti-glare layer 3. In this way, when the second anti-glare layer 3 is coated on the first anti-glare layer 2, the anti-glare particles are all in the second anti-glare layer 3, so that the anti-glare particles are more densely distributed on the second anti-glare layer 3. Therefore, the anti-glare film formed by the first anti-glare layer 2 and the second anti-glare layer 3 has better anti-glare effect because the anti-glare particles are mainly distributed on the surface of the anti-glare film.

[0032] In step S4, the first anti-glare layer 2 and the second anti-glare layer 3 on the substrate layer 1 are cured to obtain an anti-glare film.

[0033] As Figure 2 shown, another embodiment of the present application provides an anti-glare film prepared by the above preparation method. The anti-glare film comprises a substrate layer 1, a first anti-glare layer 2 and a second anti-glare layer 3 which are stacked in sequence. The thickness of the first anti-glare layer 2 is between 1 μm and 4 μm. The thickness of the second anti-glare layer 3 is between 4 μm and 5 μm. The substrate layer 1 is selected from one of polyethylene terephthalate, triacetate fiber, super complex refractive polyester film and polycarbonate.

[0034] The present application will be further described below in conjunction with specific examples and comparative examples.

[0035] Example 1

[0036] The haze of the anti-glare film is 5%.

[0037] The substrate layer 1 is a triacetate fiber substrate layer 1.

[0038] The thickness of the first anti-glare layer 2 is 1 um; resin: acrylate 5 parts by mass, epoxy acrylate polymer 25 parts by mass; photopolymerization initiator: 1 part by mass; additive: amorphous silica 18 parts by mass; solvent: methanol 1 part by mass, methyl isobutyl ketone 50 parts by mass.

[0039] The thickness of the second anti-glare layer 3 is 4 um; anti-glare particle: reaction product of dimethylhydroxy-terminated siloxane and silica 20 parts by mass; resin: acrylate 10 parts by mass, propylene glycol methyl ether acetate 5 parts by mass; solvent: 1-hydroxycyclohexyl phenyl ketone 5 parts by mass, methyl isobutyl ketone 50 parts by mass.

[0040] Example 2

[0041] The haze of the anti-glare film is 25%.

[0042] The substrate layer 1 is a triacetate fiber substrate layer 1.

[0043] The thickness of the first anti-glare layer 2 is 1 um; resin: acrylate 5 parts by mass, epoxy acrylate polymer 25 parts by mass; photopolymerization initiator: 1 part by mass; additive: amorphous silica 18 parts by mass; solvent: methanol 1 part by mass, methyl isobutyl ketone 50 parts by mass.

[0044] The thickness of the second anti-glare layer 3 is 5 um; anti-glare particle: reaction product of dimethylhydroxy-terminated siloxane and silica 15 parts by mass; resin: acrylate 5 parts by mass, acrylic polymer 30 parts by mass; solvent: propylene glycol methyl ether 5 parts by mass, toluene 9 parts by mass, styrene 1 part by mass.

[0045] Example 3

[0046] The haze of the anti-glare film is 50%.

[0047] The substrate layer 1 is a triacetate fiber substrate layer 1.

[0048] The thickness of the first anti-glare layer 2 is 2 um; resin: acrylate 5 parts by mass, epoxy acrylate polymer 25 parts by mass; photopolymerization initiator: 1 part by mass; additive: amorphous silica 18 parts by mass; solvent: methanol 1 part by mass, methyl isobutyl ketone 50 parts by mass.

[0049] The thickness of the second anti-glare layer 3 is 3 um; anti-glare particle: reaction product of dimethylhydroxy-terminated siloxane and silica 15 parts by mass; resin: acrylate 5 parts by mass, acrylic polymer 30 parts by mass; solvent: propylene glycol methyl ether 40 parts by mass; toluene 9 parts by mass, styrene 1 part by mass.

[0050] Comparative Example 1

[0051] The haze of the anti-glare film is 5%.

[0052] Substrate layer 1: triacetate fiber substrate layer 1.

[0053] Antiglare layer thickness: 5 μm; antiglare particles: 20 parts by mass of a reaction product of dimethylhydroxyl-terminated siloxane and silica; resin: 10 parts by mass of acrylate, 5 parts by mass of propylene glycol methyl ether acetate; solvent: 5 parts by mass of 1-hydroxycyclohexyl phenyl ketone, 50 parts by mass of methyl isobutyl ketone.

[0054] Comparative Example 2

[0055] Antiglare film haze: 25%.

[0056] Substrate layer 1: triacetate fiber substrate layer 1.

[0057] Antiglare layer thickness: 6 μm; antiglare particles: 15 parts by mass of a reaction product of dimethylhydroxyl-terminated siloxane and silica; resin: 5 parts by mass of acrylate, 30 parts by mass of acrylic polymer; solvent: 5 parts by mass of propylene glycol methyl ether, 9 parts by mass of toluene, 1 part by mass of styrene.

[0058] Comparative Example 3

[0059] Antiglare film haze: 50%.

[0060] Substrate layer 1: triacetate fiber substrate layer 1.

[0061] Antiglare layer thickness: 5 μm; antiglare particles: 15 parts by mass of a reaction product of dimethylhydroxyl-terminated siloxane and silica; resin: 5 parts by mass of acrylate, 30 parts by mass of acrylic polymer; solvent: 40 parts by mass of propylene glycol methyl ether, 9 parts by mass of toluene, 1 part by mass of styrene.

[0062] The following tests were performed on the transmittance, haze, abrasion resistance, and antiglare effect of the antiglare films of Examples 1-3 and Comparative Examples 1-3. The specific test results are shown in Tables 1 and 2 below.

[0063]

[0064]

[0065] Table 2 is the data from the gloss meter test, and gloss is a physical quantity that evaluates the ability of a material surface to reflect light under a set of geometrically prescribed conditions. The lower the gloss, the lower the surface specular reflection, and the better the antiglare effect.

[0066] According to the above Table 1 and Table 2, the anti-glare film prepared by the anti-glare film preparation method provided by the present application has better haze achieving degree under the haze requirement. Secondly, the haze of the anti-glare film is improved, thereby having better anti-glare effect. In addition, the hardness and wear resistance of the anti-glare film are improved, thereby prolonging the service life of the anti-glare film.

[0067] The foregoing description of specific exemplary embodiments of the application has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the application to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. It is intended that the scope of the application be limited not with this detailed description, but rather by the claims appended hereto.

Claims

1. A method for producing an anti-glare film, characterized by, The method comprises the following steps: selecting a substrate layer; coating a first anti-glare liquid on the surface of the substrate layer to form a first anti-glare layer; wherein the first anti-glare liquid is composed of the following components: resin: 25-35 parts by mass; photopolymerization initiator: 0-3 parts by mass; additive: 15-20 parts by mass; solvent: 45-55 parts by mass; the additive is amorphous silica; the thickness of the first anti-glare layer is between 1 μm and 3 μm; the resin in the first anti-glare liquid is a combination of acrylate and epoxy acrylate polymer; coating a second anti-glare liquid on the side of the first anti-glare layer away from the substrate layer to form a second anti-glare layer; wherein the second anti-glare liquid comprises: anti-glare particles: 15-25 parts by mass; resin: 10-20 parts by mass; solvent: 45-60 parts by mass, the anti-glare particles are the reaction product of dimethylhydroxyl-terminated siloxane and silica; the particle size of the anti-glare particles is between 1 μm and 3 μm; the thickness of the second anti-glare layer is between 3 μm and 5 μm; the resin in the second anti-glare liquid is a combination of acrylate and acrylic polymer; curing the first anti-glare layer and the second anti-glare layer on the substrate layer to obtain an anti-glare film.

2. The anti-glare film production method according to claim 1, wherein The substrate layer is selected from one of polyethylene terephthalate, triacetate fiber, superplex polyester film and polycarbonate.

3. The anti-glare film production method according to claim 1, wherein The solvent in the first anti-glare liquid is selected from one or more of methanol and methyl isobutyl ketone.

4. The anti-glare film production method according to claim 1, wherein The solvent in the second anti-glare liquid is selected from one or more of 1-hydroxycyclohexyl phenyl ketone, methyl isobutyl ketone, propylene glycol methyl ether, toluene and styrene.

5. An anti-glare film characterized by, The anti-glare film is prepared by the method of any one of claims 1-4.

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