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Method for manufacturing antiglare film

A manufacturing method and anti-glare film technology, applied to flat products, devices for coating liquid on the surface, applications, etc., can solve the problems of inability to continuously manufacture and low productivity, and achieve an excellent balance between anti-glare properties and contrast Effect

Active Publication Date: 2019-12-13
DAICEL CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in this method, in order to measure the above-mentioned reflection intensity ratio, off-line inspection must be performed using a goniophotometer, and the goniophotometer needs to be measured in a stationary state, so continuous production in the manufacturing equipment is not possible, and productivity is low.

Method used

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  • Method for manufacturing antiglare film

Examples

Experimental program
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Effect test

Embodiment

[0040] Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited by these examples. Raw materials used in Examples and Comparative Examples are as follows, and the obtained antiglare films were evaluated by the following methods.

[0041] [raw material]

[0042] Acrylic polymer having a polymerizable group: "Cyclomer P" manufactured by Daicel-Allnex Co., Ltd.

[0043] Cellulose acetate propionate: "CAP-482-20" manufactured by Eastman Co., Ltd., degree of acetylation = 2.5%, degree of propionylation = 46%, number average molecular weight in terms of polystyrene: 75,000

[0044] Acrylic ultraviolet (UV) curable compound containing nano-silica: "UVHC7800G" manufactured by MomentivePerformance Materials Japan

[0045] Silicone acrylate: "EB1360" manufactured by Daicel-Allnex Co., Ltd.

[0046] Urethane acrylate: "UA-53H" manufactured by Shin-Nakamura Chemical Co., Ltd.

[0047] Dipentaerythritol hexaacrylate...

manufacture example 1

[0063] 12.5 parts by weight of an acrylic polymer having a polymerizable group, 4 parts by weight of cellulose acetate propionate, 150 parts by weight of an acrylic UV-curable compound containing nano-silica, 1 part by weight of silicone acrylate, 1 part by weight 1 part by weight of photoinitiator A and 1 part by weight of photoinitiator B were dissolved in a mixed solvent of 81 parts by weight of methyl ethyl ketone, 24 parts by weight of 1-butanol and 13 parts by weight of 1-methoxy-2-propanol. After casting this solution on a PET film using a wire rod #20, it was left in an oven at 80° C. for 1 minute to evaporate the solvent to form a coating layer with a thickness of about 9 μm. Then, the coating layer was irradiated with ultraviolet rays from a high-pressure mercury lamp for about 5 seconds to perform UV curing treatment to obtain an antiglare film A (hard coat film).

manufacture example 2

[0065] 15.0 parts by weight of an acrylic polymer having a polymerizable group, 3 parts by weight of cellulose acetate propionate, 150 parts by weight of an acrylic UV-curable compound containing nano-silica, 1 part by weight of silicone acrylate, 1 part by weight 1 part by weight of photoinitiator A and 1 part by weight of photoinitiator B were dissolved in a mixed solvent of 101 parts by weight of methyl ethyl ketone and 24 parts by weight of 1-butanol. After casting this solution on a PET film using a wire rod #20, it was left in an oven at 80° C. for 1 minute to evaporate the solvent to form a coating layer with a thickness of about 9 μm. Then, the coating layer was irradiated with ultraviolet rays from a high-pressure mercury lamp for about 5 seconds to perform a UV curing treatment, whereby an antiglare film B was obtained.

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Abstract

In the present invention, the gloss of a surface having a relief structure is measured, the ratio R / V (the diffuse regular reflection intensity R in this expression being the diffuse reflection intensity measured at an aperture angle of 1 degree by a goniophotometer in the direction of diffuse reflection when a visible light ray is radiated at an angle of 45 degrees from normal to a surface of anantiglare film having a relief structure, and the total V of the diffuse reflection intensity being the total of the diffuse reflection intensity measured at an aperture angle of 1 degree by a goniophotometer for each degree from 45 degrees to +45 degrees including 0 degrees with respect to the direction of diffuse reflection when a visible light ray is radiated at an angle of 45 degrees from normal to the surface of the antiglare film having a relief structure) of the diffuse regular reflection intensity R to the total V of the diffuse reflection intensity is evaluated, and an antiglare filmis manufactured. Through this method, an antiglare film having high contrast and antiglare properties can be manufactured with high productivity.

Description

technical field [0001] The present invention relates to a method for continuously producing an antiglare film having an excellent balance between antiglare property and contrast while screening. Background technique [0002] In various image display devices such as liquid crystal display devices (LCD) and organic electroluminescent (EL) display devices (OLED), the display screen is laminated with a layer of light for scattering surface reflected light and preventing the reflection of external light sources, etc. Anti-glare film for visibility. However, if the light-scattering function of the anti-glare film is too strong, the contrast of the image will decrease, making it difficult to display a clear image. On the other hand, in recent years, in LCDs and OLEDs, high-definition displays have progressed, and anti-glare films that can achieve both anti-glare and contrast are required. These two characteristics required by the anti-glare film are characteristics that are diffi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02B29C59/04B29L7/00B29L11/00
CPCB29C59/04B05D1/40B05D3/067B05D3/0272B05D2601/22B05D2502/00B05D5/061G01N21/57G01N2021/556G02B1/111G02B1/14G02B5/0242B29C59/002B29C59/02G02B5/02B05D5/02G01N21/4738G02B1/12
Inventor 菅原庆峰
Owner DAICEL CHEM IND LTD
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