KR100785380B1 - Method of manufacturing anti-glare film - Google Patents

Abstract

An anti-glare film manufacturing method is provided to express a haze effect without using nano or micro particles, by making an anti-glare film uneven and to improve visibility and anti-glare property by easily controlling external and internal haze. An anti-glare film manufacturing method comprises the steps of: transferring the uneven surface of a master anti-glare film by applying and hardening resin composition solution for a soft mold on the master anti-glare film formed by applying and hardening resin composition solution containing fine particles, on a base material(S10); separating the soft mold having the uneven surface transferred by hardening the resin composition solution, from the master anti-glare film(S20); transferring the uneven surface from the soft mold and hardening the base film by coating the upside of the base film with UV(Ultraviolet)-curable resin composition solution and applying the soft mold(S30); and removing the soft mold from the base film(S40).

Description

Method of manufacturing antiglare film {Method of manufacturing anti-glare film}

Figure 1a is a schematic cross-sectional view of a conventional anti-glare film.

Figure 1b is a schematic cross-sectional view of another conventional anti-glare film.

Figure 2 is a flow chart of the manufacturing process of the anti-glare film according to an embodiment of the present invention.

3 is a detailed manufacturing process diagram according to the manufacturing process of FIG.

Figure 4 is a cross-sectional view according to an embodiment of the master anti-glare film for producing a flexible mold according to the present invention.

FIG. 5 is a diagram illustrating a process of forming a microcell and a virtual nanoparticle aggregate dispersed in a resin composition of a master antiglare film in the present invention.

`` Explanation of symbols for main parts of drawings ''

10: master antiglare film 12: base film

14: anti-glare film resin composition 15: fine particles

20: flexible mold 22: flexible mold base film

24: Flexible Mold Resin Composition 25: Transfer Section

30, 40: antiglare film 32, 42: antiglare film base film

34, 44: resin composition 45: particles

100, 200: antiglare film 102, 202: transparent substrate

103: fine particles 105: large particles

104, 204: resin layer 203: nanoparticles

205 virtual nanoparticle aggregate 210 surfactant

214: Resin Fee 215: microcell

The present invention relates to a method of manufacturing an antiglare film, and more particularly, in the manufacture of an antiglare film that diffuses light to prevent or minimize glare, the fine from the surface of the antiglare film having an external haze through the surface having a fine roughness The present invention relates to a method of manufacturing an antiglare film having an external fine roughness structure by transferring a concave-convex surface to produce a flexible mold, and coating a resin composition on a soft mold having the concave-convex surface.

In general, a CRT display emits light to the front of the display by emitting phosphors inside the liquid crystal display, and emits light toward the front of the display by emitting light from the back with backlighting to illuminate the liquid crystal image.

When the display is used indoors, the illumination light of the fluorescent light is incident on the surface of the display and the screen is dazzling while the light is reflected, and the character recognition is difficult because the fluorescent light shines.

In order to prevent this, as shown in Fig. 1A, on the transparent substrate 102, a resin coating material 104 in which large particles 105 are dispersed is applied to form a layer having irregularities, and in the same manner as described above. By arranging the manufactured anti-glare film 100 on the front of the display, a technique of alleviating the glare of the screen and realizing a clear image quality from the display has been performed in the past.

Also, In order to obtain a clearer and clearer display, an antireflection film coated with a low refractive index and a high refractive index material in the form of a lamination may be additionally installed on the upper surface of the antiglare film. Technology is also used.

However, when the anti-reflection film is additionally installed, the display transmittance is lowered, resulting in a loss of image quality and a problem such as an increase in manufacturing cost.

On the other hand, a technique of additionally coating a low refractive index material on the surface of the anti-glare film also remains a problem such as lowering the process yield and manufacturing cost increases.

Anti-glare property is proportional to the roughness (roughness) of the surface in contact with the outside, the greater the surface irregularities, the greater the scattering effect of the external light can be improved, so the anti-glare property can be improved.

In order to make the surface irregularities large, it is possible to increase the size of the particles contained in the resin or to increase the content of the particles.

However, as the particles in the coating material become larger and the content thereof increases, the particles in the coating liquid are easily precipitated, which may cause problems such as poor uniformity of the coating material.

Therefore, in order to solve the problems of anti-glare and haze mentioned above, nano- or micro-sized fine particles 103 and 105 may be mixed as shown in FIG. 1B.

However, when two or more kinds of fine particles are mixed, it is not easy to simultaneously control the external haze and the internal haze, and the handling of the solvent type resin and the drying process of the coated resin are easy and simple. Therefore, problems such as an increase in manufacturing cost and a decrease in process yield are still not solved.

The present invention has been made to solve the above problems, to produce a flexible mold by transferring a fine concavo-convex surface from the surface of the master anti-glare film having an external haze through a surface having a fine roughness, the ductility having a fine concave-convex surface It is to provide a method for producing an anti-glare film by coating a resin composition on a mold is transferred from the flexible mold and having the external fine concavo-convex surface structure.

Method for producing an antiglare film according to the present invention for achieving the above object, the resin composition solution containing the fine particles on the substrate is coated and cured the resin composition solution for the flexible mold on the cured master antiglare film to the master glare Transferring the concave-convex surface of the film, separating the flexible mold on which the concave-convex surface is transferred by curing the resin composition solution for the flexible mold from the master anti-glare film, coating a UV-curable resin composition on the base film and coating the flexible mold Adding a step of transferring the concave-convex surface from the flexible mold to cure, and removing the flexible mold from the base film.

In addition, in the method for producing an antiglare film according to the present invention, the resin composition liquid coated on the base film is characterized in that it contains fine particles or beads.

In addition, in the method of manufacturing an anti-glare film according to the present invention, the master anti-glare film coated with a resin composition liquid containing fine particles on a substrate to form a flexible mold is cured a transparent substrate, a resin layer located on the transparent substrate It is characterized in that it comprises a plurality of first particles as nanoparticles dispersed in the resin layer, and a plurality of second particles which are pseudo-assembly dispersed in the resin layer.

In the present invention, the method for producing an antiglare film is characterized in that the first particles include at least one of silicon oxide, titanium dioxide, indium oxide, tin oxide, zirconium oxide, and zinc oxide. .

In addition, in the method of manufacturing an antiglare film according to the present invention, the second particles are formed by forming a micro cell by a surfactant included in the resin layer and collecting the plurality of first particles by entering the micro cell. It is characterized by being.

In the method for producing an antiglare film according to the present invention, the resin composition for the flexible mold may be a bisphenol-based (meth) acrylate, a monofunctional group (meth) acrylate, a (meth) acrylate, an epoxie (meth) acrylate, It is characterized by including a polyfunctional (meth) acrylate and a photoinitiator.

In the method for producing an antiglare film according to the present invention, the resin composition for the flexible mold is characterized in that it contains a urethane acrylate oligomer, an epoxy acrylate oligomer, a polyfunctional acrylate monomer, and a photopolymerization initiator.

In the method for producing an antiglare film according to the present invention, the flexible molding resin composition further includes polymethyl methacrylate beads fine particles and polystyrene beads fine particles.

Hereinafter, exemplary embodiments will be described in more detail with reference to the accompanying drawings.

Figure 2 is a flow chart of the manufacturing process of the anti-glare film according to an embodiment of the present invention, Figure 3 is a detailed manufacturing process diagram according to the manufacturing process of FIG.

2 and 3, the manufacturing method of the anti-glare film according to the present invention is subjected to the following process.

First, as a step of forming the flexible mold 20, the resin composition solution for the flexible mold on the master anti-glare film (10) is coated on the base film 12, the resin composition solution 14 containing the fine particles 15 is cured ( 24) is a step of transferring the uneven surface of the master anti-glare film 10 by coating and curing (S10, A, B of Figure 3).

The flexible molding resin composition 24 is coated between the master antiglare film 10 and the flexible mold base film 22, for example, a PET film, to be photocured.

The master anti-glare film 10 is for transferring the fine uneven surface of the master anti-glare film 10 to the flexible mold 20, the fine particles contained in the resin composition 14 of the master anti-glare film 10 ( 15) Alternatively, the external haze can be adjusted freely according to the content conditions and process conditions of the nanoparticles.

Next, the resin composition for the flexible mold is cured from the master antiglare film 10 to separate the flexible mold 20 on which the uneven surface is transferred (S20, FIG. 3C).

The separated flexible mold 20 is formed by transferring the roughness formed on the surface of the master anti-glare film 10 as it is.

Next, the step of coating the UV curable resin composition 34 on the base film 32 and adding the transfer portion 25 of the flexible mold 20 to transfer the surface of the uneven surface from the flexible mold 20 and photocured Proceed to (S30, D1, D2 of Figure 3).

At this time, in D1 of FIG. 3, when the microbeads or nanobeads are not included in the antiglare film resin composition 34 which is coated and cured on the base film 32 of the antiglare film 30 manufactured according to the present invention. As a result, the anti-glare film 30 having an external haze is manufactured by the flexible mold 20 (D1 in FIG. 3).

In addition, in FIG. 3 D2, particles 45 such as microbeads or nanobeads are formed inside the antiglare film resin composition 44 which is coated and cured on the base film 42 of the antiglare film 40 manufactured according to the present invention. In this case, the flexible mold 20 has an external haze, and the anti-glare film 30 is manufactured by the fine particles 45 therein (D2 in FIG. 3).

Finally, the flexible mold 20 is removed from the base film 30 coated with the antiglare film resin composition to prepare the antiglare films 30 and 40 provided with external haze or internal haze (S40). , E1, E2 of Figure 3).

At this time, the anti-glare film 200 according to the embodiment used as the master anti-glare film 10 is as shown in FIG.

4, a transparent substrate 202, a resin layer 204 positioned on the transparent substrate 202, a plurality of first particles 203 as nanoparticles dispersed in the resin layer 204, and Virtual nanoparticle aggregates formed by forming a micro cell by the surfactant included in the resin layer 204 and collecting the plurality of first particles 203 by entering the micro cell. assembly) and a plurality of second particles (205).

The virtual nanoparticle assembly 205 serves as large particles functioning as surface irregularities in the antiglare film by forming antiglare irregularities on the transparent substrate 202.

In addition, the nanoparticles 203 dispersed in the resin layer 204 are different from the original refractive index values of the resin layer 204, and some of the resin layers 204 and the nanoparticles 203 are in nano units. By alternately generating the difference in refractive index into the resin layer 204, which reduces the reflectance of the anti-glare film 200 by the optical interference principle.

Here, the first particles as the nanoparticles are preferably used in one or two or more mixed forms of silicon oxide, titanium dioxide, indium oxide, tin oxide, zirconium oxide, and zinc oxide, and are silica-based nanoparticles. It is more preferable that the particles, the size of the first particles is preferably in the range of 1nm to 50nm.

In addition, in the master anti-glare film according to the present invention, the size of the micro cell by the surfactant 210 is inversely proportional to the speed of the high speed mixing stirrer, the size of the second particles is preferably in the range of 50nm to 20㎛. .

FIG. 5 is a view illustrating a process of forming microcells and virtual nanoparticle aggregates dispersed in the resin composition 14 of the master antiglare film 10 in the present invention.

The microcell 215 is manufactured in a form including a cavity inside the resin by dissolving the resin in a solvent, adding a surfactant and stirring at high speed.

The size of the micro cell 215 is inversely proportional to the speed of the high speed mixing stirrer, and the amount of micro cell 215 depends on the concentration of the surfactant.

When the nanoparticles 203 are introduced into the resin coating material on which the microcells 215 are formed, and then stirred at a low speed, the nanoparticles 203 having hydrophilicity enter the empty space inside the microcells and are collected. pseudo-assembly, 205).

In FIG. 4, when the nanoparticles are coated with a resin coating material on the transparent base material 202 and the drying process is performed, the virtual nanoparticle aggregates 205 where the nanoparticles are clustered and aggregated are anti-glare on the anti-glare film 200. It is formed of unevenness to play the role of large particles used in the antiglare film.

In addition, the virtual nanoparticle aggregate 205 has an irregular agglomerate shape having surface irregularities, so that greater roughness can be realized than smooth spherical particles.

Hereinafter, the present invention will be described in more detail with reference to preferred examples and comparative examples. The following examples are intended to illustrate the invention but are not limited thereto.

Example 1 Preparation of Master Anti-glare Film for Flexible Mold Film Production

5.8 parts by weight of urethane acrylate oligomer (EB220, SK Cytec), 3.0 parts by weight of epoxy acrylate oligomer (CN133LC, Satomer), 8.8 parts by weight of polyfunctional acrylate monomer (PETIA, SK Cytec), 7.6 parts by weight of urethane acrylic The late oligomer (UP026, SK Cytec) was mixed with 25.7 parts by weight of methyl isobutyl ketone (MIBK, Deoksan Chemical) and 25.7 parts by weight of isobutyl alcohol (IBA, large purified gold) and then dissolved. 0.9 parts by weight of modified acrylate block copolymer system in the above solution After adding the surfactant and 0.1 parts by weight of other additives, the high speed mixer Homogenizer (IKA) is stirred at 10,000 rpm for 10 minutes. After stirring, 22.1 parts by weight of silica sol (20 nm, 20wt%, thiochem) and 1.3 parts by weight of a photopolymerization initiator (IGC184, Ciba-Geigy) were further added, followed by low speed stirring at 800 rpm for 30 minutes to prepare a resin coating material. . The resin coating material was coated on one surface of the TAC FILM (40㎛, Fuji) using Micro-Gravure, and then dried for 60 seconds at 50 ° C-60 ° C-70 ° C-60 ° C, followed by 250mJ / ㎠ Photopolymerization of the coating coated with ultraviolet light (Igraphix Co., Ltd.) was carried out to form a coating thickness of 4㎛ to prepare an anti-glare film. At this time, the total amount except the surfactant and other additives was set to 100 parts by weight.

Example 2 Preparation of Master Anti-glare Film for Flexible Mold Film Production

5.8 parts by weight of urethane acrylate oligomer (EB220, SK Cytec), 3.0 parts by weight of epoxy acrylate oligomer (CN133LC, Satomer), 8.8 parts by weight of polyfunctional acrylate monomer (PETIA, SK Cytec), 7.6 parts by weight of urethane acrylic The late oligomer (UP026, SK Cytec) was mixed with 25.7 parts by weight of methyl isobutyl ketone (MIBK, Deoksan Chemical) and 25.7 parts by weight of isobutyl alcohol (IBA, large purified gold) and then dissolved. After adding 0.9 parts by weight of a copolymer-based surfactant having 0.1 parts by weight of carboxyl group and 0.1 parts by weight of other additives, the high speed mixer Homogenizer (IKA) was stirred at 10,000 rpm for 10 minutes. After stirring, 22.1 parts by weight of silica sol (20 nm, 20 wt%, thiochem) and 1.3 parts by weight of a photopolymerization initiator (IGC184, Ciba-Geigy) were further added, followed by low speed stirring at 800 rpm for 30 minutes to prepare a resin coating material. . The resin coating material was coated on the surface of TAC FILM (40㎛, Fuji) using Micro-Gravure Roll, and then dried sequentially in the temperature condition of 50 ℃ -60 ℃ -70 ℃ -60 ℃ for 60 seconds. After the coating, photopolymerization of the coating material coated with 250 mJ / cm 2 ultraviolet (Igrafix Co., Ltd.) was performed to form a coating thickness of 4 μm to prepare an anti-glare film. At this time, the total amount except the surfactant and other additives was set to 100 parts by weight.

Example 3 Preparation of Master Anti-glare Film for Flexible Mold Film Production

10.7 parts by weight of epoxy acrylate oligomer (CN133LC, Satomer), 8.8 parts by weight of polyfunctional acrylate monomer (PETIA, SK Cytec), 1.6 parts by weight of urethane acrylate oligomer (UP016, SK Cytec), 14.4 parts by weight of urethane acrylic The rate oligomer (UP026, SK Cytec) was mixed with 40.54 parts by weight of methyl isobutyl ketone (MIBK, Duksan Chemical), 17.4 parts by weight of isobutyl alcohol (IBA, large purified gold) and dissolved. After adding 0.33 parts by weight of modified acrylate block copolymer-based surfactant and 0.1 parts by weight of other additives to the solution, a high-speed mixer, Homogenizer (IKA), is stirred at 5,000 rpm for 10 minutes. After stirring was completed, 13.4 parts by weight of silica sol (20 nm, 20 wt%, thiochem) and 1.6 parts by weight of a photopolymerization initiator (IGC184, Ciba-Geigy) were added thereto, followed by low speed stirring at 800 rpm for 30 minutes to prepare a resin coating material. . The resin coating material was coated on one surface of PET FILM (250㎛, Toyobo) using Micro-Gravure, and then dried for 60 seconds at 50 ° C.-60 ° C.-70 ° C.-60 ° C. and then 250 mJ / ㎠ Photopolymerization of the coating coated with ultraviolet light (Igraphix Co., Ltd.) was carried out to form a coating thickness of 4㎛ to produce an anti-glare film. At this time, the total amount except the surfactant and other additives was set to 100 parts by weight.

Example 4 Preparation of Master Anti-glare Film for Flexible Mold Film Production

6.2 parts by weight of urethane acrylate oligomer (EB1290, SK Cytec), 12.4 parts by weight of epoxy acrylate oligomer (CN133LC, Satomer), 3.1 parts by weight of polyfunctional acrylate monomer (PETIA, SK Cytec), 6.2 parts by weight of urethane acrylic The late oligomer (UP016, SK Cytec) was mixed with 30 parts by weight of methyl isobutyl ketone (MIBK, Deoksan Chemical) and 30 parts by weight of isobutyl alcohol (IBA, large purified gold) and then dissolved. After adding 0.5 parts by weight of a copolymer-based surfactant having 0.5 parts by weight of carboxyl group and other additives, the high-speed mixer Homogenizer (IKA) was stirred at 5,000 rpm for 10 minutes. After stirring, 12.4 parts by weight of silica sol (20 nm, 20wt%, thiochem) and 2.1 parts by weight of a photopolymerization initiator (IGC184, Ciba-Geigy) were further added, followed by low speed stirring at 800 rpm for 30 minutes to prepare a resin coating material. . The resin coating material was coated on one surface of PET FILM (250㎛, Toyobo) using Micro-Gravure, and then dried for 60 seconds at 50 ° C.-60 ° C.-70 ° C.-60 ° C. and then 250 mJ / ㎠ Photopolymerization of the coating coated with ultraviolet light (Igraphix Co., Ltd.) was carried out to form a coating thickness of 4㎛ to prepare an anti-glare film. At this time, the total amount except the surfactant and other additives was set to 100 parts by weight.

Example 5 Preparation of Master Anti-glare Film for Flexible Mold Film Production

5.9 parts by weight of urethane acrylate oligomer (EB1290, SK Cytec), 8.9 parts by weight of epoxy acrylate oligomer (CN133LC, Satomer), 3.1 parts by weight of polyfunctional acrylate monomer (PETIA, SK Cytec), 7.7 parts by weight of urethane acrylic The late oligomer (UP016, SK Cytec) was mixed with 26 parts by weight of methyl isobutyl ketone (MIBK, Deoksan Chemical) and 26 parts by weight of isobutyl alcohol (IBA, large purified gold) and then dissolved. After adding 0.5 parts by weight of modified acrylate block copolymer-based surfactant and 0.5 parts by weight of other additives to the solution, a high-speed mixer Homogenizer (IKA) is stirred at 10,000 rpm for 10 minutes. After stirring, 22.5 parts by weight of silica sol (20 nm, 20 wt%, thiochem) and 1.3 parts by weight of a photopolymerization initiator (IGC184, Ciba-Geigy) were additionally added, followed by low speed stirring at 800 rpm for 30 minutes to prepare a resin coating material. . The resin coating material was coated on one surface of PET FILM (250㎛, Toyobo) using Micro-Gravure, and then dried for 60 seconds at 55 ° C-70 ° C-80 ° C-60 ° C, followed by 250mJ / ㎠ Photopolymerization of the coating coated with ultraviolet light (Igraphix Co., Ltd.) was carried out to form a coating thickness of 4㎛ to prepare an anti-glare film. At this time, the total amount except the surfactant and other additives was set to 100 parts by weight.

Example 6 Flexible Mold Film Preparation

30 parts by weight of bisphenol-based (meth) acrylate, 13 parts by weight of monofunctional group (meth) acrylate, 15 parts by weight of (meth) acrylate, 27 parts by weight of epoxy (meth) acrylate, 15 parts by weight of polyfunctional (meth) acrylic 6 weight part photoinitiator (IGC184) was thrown into the rate, and it stirred uniformly. The stirred resin composition was coated between the antiglare film for producing the flexible mold film prepared in Example 1 and the PET film, and the coating film coated with ultraviolet light was photopolymerized. The photopolymerized film surface was released from the antiglare film to prepare a flexible mold film in which the irregularities of the antiglare film were transferred to the surface as it was.

In the same manner as described above, the flexible mold films of the antiglare films prepared in Examples 2, 3, 4, and 5 were prepared.

In order to more easily release the antiglare film and the flexible mold film, a small amount of an additive such as a release agent may be added and used.

Example 7 Preparation of Anti-glare Film Using Flexible Mold Film

15 parts by weight of bisphenol-based (meth) acrylate, 5 parts by weight of monofunctional group (meth) acrylate, 6 parts by weight of (meth) acrylate, 67 parts by weight of epoxy (meth) acrylate, 7 parts by weight of 10 functional groups (meth) acrylic 7 weight part of photoinitiators were put into the rate, and it stirred homogeneously. The stirred resin composition was coated with a thickness of 4 μm between the flexible mold film prepared using the antiglare film of Example 2 and the TAC film, and photopolymerized with UV-coated paint. The photopolymerized TAC film surface was released from the flexible mold film to prepare an antiglare film.

<Example 8> Anti-glare film production using a flexible mold film

23 parts by weight of urethane acrylate oligomer (EB1290, SK Cytec), 35 parts by weight of epoxy acrylate oligomer (CN133LC, Satomer), 12 parts by weight of polyfunctional acrylate monomer (PETIA, SK Cytec), 30 parts by weight of urethane acrylic 5 weight part of photoinitiators are input and stirred for a rate oligomer (UP016, SK Cytec). The stirred resin was coated with a thickness of 4 μm between the flexible mold film prepared in Example 3 and the TAC film to photopolymerize the UV-coated paint. The photopolymerized TAC film surface was released from the flexible mold film to prepare an antiglare film.

Example 9 Preparation of Anti-glare Film Using Flexible Mold Film

To the composition of Example 8, 15 parts by weight of polymethyl methacrylate beads having a size of 3 μm and 5 parts by weight of polystyrene beads having a size of 3.5 μm were added to form a resin composition including microparticles. An antiglare film was prepared in the same manner as in Example 8.

<Example 10> Anti-glare film production using a flexible mold film

An antiglare film was prepared using the flexible mold film prepared in Example 4 using the resin composition of Example 9.

Example 11 Preparation of Anti-glare Film Using Flexible Mold Film

To the composition of Example 8, 6 parts by weight of polymethyl methacrylate beads having a size of 3 μm and 2 parts by weight of polystyrene beads having a size of 3.5 μm were added to form a resin composition including microparticles. An antiglare film was prepared using the flexible mold film prepared in Example 5.

Example 12 Preparation of Anti-glare Film Using Flexible Mold Film

An antiglare film was prepared using the flexible mold film prepared in Example 5 using the resin composition of Example 8.

Comparative Example 1

5.8 parts by weight of urethane acrylate oligomer (EB220, SK Cytec), 3.0 parts by weight of epoxy acrylate oligomer (CN133LC, Satomer), 8.8 parts by weight of polyfunctional acrylate monomer (PETIA, SK Cytec), 7.6 parts by weight of urethane acrylic The late oligomer (UP026, SK Cytec) was mixed with 25.7 parts by weight of methyl isobutyl ketone (MIBK, Deoksan Chemical) and 25.7 parts by weight of isobutyl alcohol (IBA, large purified gold) and then dissolved. The solution is stirred for 10 minutes at 10,000 rpm. After stirring, 22.1 parts by weight of silica sol (20 nm, 20 wt%, thiochem) and 1.3 parts by weight of a photopolymerization initiator (IGC184, Ciba-Geigy) were additionally added, followed by low speed stirring at 800 rpm for 30 minutes to prepare a resin coating material. . The resin coating material was coated on one surface of TAC FILM (40㎛, Fuji) using Micro-Gravure, and then dried for 60 seconds at 50 ° C-60 ° C-70 ° C-60 ° C. Photopolymerization of the coating coated with ultraviolet light (Igraphix Co., Ltd.) was carried out to form a coating thickness of 4㎛ to prepare an anti-glare film. At this time, the total amount except the surfactant and other additives was set to 100 parts by weight.

Comparative Example 2

5.8 parts by weight of urethane acrylate oligomer (EB220, SK Cytec), 3.0 parts by weight of epoxy acrylate oligomer (CN133LC, Satomer), 8.8 parts by weight of polyfunctional acrylate monomer (PETIA, SK Cytec), 7.6 parts by weight of urethane acrylic The late oligomer (UP026, SK Cytec) was mixed with 25.7 parts by weight of methyl isobutyl ketone (MIBK, Deoksan Chemical) and 25.7 parts by weight of isobutyl alcohol (IBA, large purified gold) and then dissolved. After adding 3.6 parts by weight of modified acrylate block copolymer-based surfactant and 0.4 parts by weight of other additives to the solution, a high-speed mixer Homogenizer (IKA) is stirred at 10,000 rpm for 10 minutes. After stirring, 22.1 parts by weight of silica sol (20 nm, 20 wt%, thiochem) and 1.3 parts by weight of a photopolymerization initiator (IGC184, Ciba-Geigy) were further added, followed by low speed stirring at 800 rpm for 30 minutes to prepare a resin coating material. . The resin coating material was coated on one surface of TAC FILM (40㎛, Fuji) using Micro-Gravure, and then dried for 60 seconds at 50 ° C-60 ° C-70 ° C-60 ° C. Photopolymerization of the coating coated with ultraviolet light (Igraphix Co., Ltd.) was carried out to form a coating thickness of 4㎛ to prepare an anti-glare film. At this time, the total amount except the surfactant and other additives was set to 100 parts by weight.

Comparative Example 3

5.8 parts by weight of urethane acrylate oligomer (EB220, SK Cytec), 3.0 parts by weight of epoxy acrylate oligomer (CN133LC, Satomer), 8.8 parts by weight of polyfunctional acrylate monomer (PETIA, SK Cytec), 7.6 parts by weight of urethane acrylic The late oligomer (UP026, SK Cytec) was mixed with 34.6 parts by weight of methyl isobutyl ketone (MIBK, Deoksan Chemical) and 34.5 parts by weight of isobutyl alcohol (IBA, large purified gold) and then dissolved. 4.4 parts by weight of microparticles (MX-300, Soken) and 1.3 parts by weight of a photopolymerization initiator (IGC184, Ciba-Geigy) were further added, followed by low speed stirring at 800 rpm for 30 minutes to prepare a resin coating material. The resin coating material was coated on one surface of TAC FILM (40㎛, Fuji) using Micro-Gravure, and then dried for 60 seconds at 50 ° C-60 ° C-70 ° C-60 ° C. Photopolymerization of the coating coated with ultraviolet light (Igraphix Co., Ltd.) was carried out to form a coating thickness of 4㎛ to prepare an anti-glare film. At this time, the total amount except the surfactant and other additives was set to 100 parts by weight.

Evaluation of the resin coating material and anti-glare film prepared from the above embodiment is carried out by the following method.

(1) stability of resin

Add about 8ml to 10ml vial and leave for 1 hour to evaluate the precipitation of the solution. If precipitation occurs, a clear section forms at the top.

The more sedimentation and bubbles do not occur, the better the liquid stability.

Result representation: Excellent, Moderate, Vulnerable

(2) Haze & Total Transmittance

Measure the value using a spectrophotometer.

       Result display: Haze (%), total light transmittance (%)

The internal haze refers to a value measured after measuring the total haze value and coating the surface with an optical adhesive having a refractive index similar to that of the coating layer using a thin TAC film.

External haze is the total haze minus the internal haze.

(3) reflectance

Attach the black film having excellent wettability and adhesiveness to the back of the produced antiglare film so as not to generate bubbles, and measure the reflectance at 5˚ using a reflectance measuring device.

Result notation:% reflectance

(4) anti-glare

After the film is completely adhered on the horizontal surface, reflect the fluorescent lamps outside and examine the degree of the shape of the fluorescent lamps.

The more invisible the shape of the fluorescent lamp, the higher the anti-glare property.

Result representation: high, medium, low

(5) appearance

Using a three-wavelength lamp, the antiglare film is visually measured for staining by transmission and 45 degree reflection.

(6) visibility

After attaching the black film which is excellent in wettability and adhesiveness to the back surface of the produced anti-glare film so that a bubble does not generate | occur | produce, a black degree is measured visually from the front and the side. The higher the degree of black, the better the visibility.

Optical property values of the anti-glare film prepared by the above embodiment are as follows.

Used flexible mold film Internal haze (%) External haze (%) Transmittance (%) Reflectance (%) Exterior Visibility Example 6 Example 1 0 42 91 0.90 ◎ ○ Example 7 Example 2 0 42 91 0.90 ◎ ○ Example 8 Example 3 0 4 91 4.5 ○ ◎ Example 9 Example 3 40 4 91 3 ◎ ◎ Example 10 Example 4 40 4.8 90 4.2 ◎ ◎ Example 11 Example 5 15 26 91 1.2 ◎ ◎ Example 12 Example 5 0 26 90 1.8 ○ ◎ Comparative Example 1 ­ 0 5 92 4.23 × ◎ Comparative Example 2 ­ 0 52 86 1.00 ○ × Comparative Example 3 ­ 14 30 89 2.51 △ △

Appearance, visibility: excellent ◎, good ○, normal △, poor ×

As shown in Table 1, it was possible to derive the evaluation results of the present invention through the preferred examples and comparative examples.

According to the result table of Examples 6-12, when manufacturing an anti-glare film using a flexible mold, the internal haze and the external haze can be freely manufactured to a desired value through a transfer method, regardless of the transmittance | permeability fall. Got it.

As a non-solvent type, the same transmittance, haze, and reflectivity as the antiglare film produced without using a conventional transfer method were obtained.

In addition, Comparative Examples 1, 2, and 3, which are conventional solvent types, did not have good appearance due to the appearance of stains during coating, etc., but the non-solvent type did not generate stains caused by solvents. It was found to be satisfactory and a better result was obtained in terms of visibility.

In addition, since the surface was roughened by the transfer method without using particles to realize external haze, there was a synergistic effect in terms of transmittance.

Although the present invention has been described in detail only with respect to the specific embodiments described, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and such modifications and modifications belong to the appended claims. .

According to the present invention, it is possible to manufacture a non-solvent type in order to maximize the anti-glare property as the surface irregularities of the anti-glare film, thereby improving the economics according to the production efficiency, the effect that the working process conditions become clean There is.

In addition, in the implementation of the external haze, it is possible to implement the haze by giving the unevenness without using nano or micro particles, and it is possible to easily control the external haze and the internal haze, so that the characteristic products according to the improvement of visibility and anti-glare property It can be manufactured easily.

In addition, according to the present invention by using a non-solvent type according to the flexible mold can be omitted the drying process, there is an advantage that the composition liquid storage and precipitation prevention is easy.

In addition, since the present invention is a non-solvent type transfer method, the appearance (MURA) caused by the solvent does not occur, the appearance is good, and the visibility is also better effect.

Claims (8)

Transferring a concave-convex surface of the master antiglare film by coating and curing a resin composition solution for a flexible mold on a cured master antiglare film by coating a resin composition containing fine particles on a substrate; Separating the flexible mold on which the concave-convex surface is transferred by curing the resin composition solution for the flexible mold from the master antiglare film; Coating a curable resin composition on a base film and adding the flexible mold to transfer the concave-convex surface from the flexible mold to cure; And Method of manufacturing an anti-glare film comprising the step of removing the flexible mold from the base film. The method of claim 1, The resin composition liquid coated on the base film is a method for producing an antiglare film, characterized in that it comprises fine particles or beads. The method of claim 1, The master anti-glare film is cured by coating a resin composition containing fine particles on the substrate to form a flexible mold, Transparent substrates; A resin layer located on the transparent substrate; A plurality of first particles as nanoparticles dispersed in the resin layer; And Method for producing an anti-glare film, characterized in that it comprises a plurality of second particles which are a pseudo-assembly dispersed in the resin layer (pseudo-assembly). The method of claim 3, wherein The first particle is a method for producing an anti-glare film, characterized in that it comprises one or more of the group consisting of silicon oxide, titanium dioxide, indium oxide, tin oxide, zirconium oxide, zinc oxide. The method of claim 3, wherein The second particle is formed by forming a micro cell by the surfactant contained in the resin layer, and the plurality of first particles are formed by entering and collecting the anti-glare film, characterized in that formed. The method according to any one of claims 1 to 5, The resin composition for the flexible mold is a bisphenol-based (meth) acrylate, monofunctional group (meth) acrylate, (meth) acrylate, epoxy (meth) acrylate, polyfunctional (meth) acrylate, photopolymerization initiator Method of manufacturing an antiglare film characterized by. The method according to any one of claims 1 to 5, The resin composition for the flexible mold, the urethane acrylate oligomer, epoxy acrylate oligomer, polyfunctional acrylate monomer, a method for producing an anti-glare film characterized in that it comprises a photopolymerization initiator. The method of claim 7, wherein The resin composition for the flexible mold is a method for producing an anti-glare film characterized in that it further comprises polymethyl methacrylate beads fine particles and polystyrene beads fine particles.

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