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Hard coating film, polarizing plate using same, hard coating film processed article, and display member

A technology for hard coating films and processed products, applied in optical elements, polarizing elements, cellulose plastic material layered products, etc., can solve the problems of excessive curling of hard coating films, poor convenience of use, etc., and achieve low curling properties , the effect of high flexibility

Active Publication Date: 2021-09-28
TOPPAN TOMOEGAWA OPTICAL FILM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, there is a problem that the obtained hard coating film has too strong curl, and when the hard coating film is further processed or used as a display part, the usability is poor.

Method used

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  • Hard coating film, polarizing plate using same, hard coating film processed article, and display member
  • Hard coating film, polarizing plate using same, hard coating film processed article, and display member
  • Hard coating film, polarizing plate using same, hard coating film processed article, and display member

Examples

Experimental program
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Effect test

Embodiment

[0054] Hereinafter, examples for implementing the present invention will be described.

[0055] On the surface of a transparent substrate made of cellulose triacetate (TAC), a hard coat-forming composition of the following composition was applied by bar coating and dried, and then, irradiated with a metal halide lamp Line amount 200mJ / m 2 The coating film was cured by irradiating ultraviolet rays to obtain a hard coating film.

[0056]

[0057] ·Resin material

[0058] PE-3A (pentaerythritol triacrylate), Kyoeisha Chemical Co., Ltd.... 9 parts by mass

[0059] UA-306H (pentaerythritol triacrylate hexamethylene diisocyanate urethane prepolymer), Kyoeisha Chemical Co., Ltd.... 13 parts by mass

[0060] UB / EB curable resin BEAMSET371, Arakawa Chemical Industry Co., Ltd....7 parts by mass

[0061] ・Colloidal silica: MEK-ST (average particle size: 15nm), Nissan Chemical Industry Co., Ltd. 43 parts by mass

[0062] · Polymerization initiator: Irgacure 184 (1-hydroxycyclohexyl...

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Abstract

Provided are: a hard coating film having high hardness, low curl properties, and high bendability; a polarizing plate using the hard coating film; a hard coating film processed article; and a display member. The hard coating film (1), in which hard coating layers (3a, 3b) are provided on both surfaces of a transparent base material (2), is characterized in that the thickness of the transparent base material (2) is 5 [mu] m to 40 [mu] m, the thickness of each of the hard coating layers (3a, 3b) is 5 [mu] m to 30 [mu] m, the total volume of the hard coating layers (3a, 3b) is 40% or more of the total volume of the hard coating film (1), and the total thickness of the hard coating film (1) is 80 [mu] m or less.

Description

[0001] This application is the application of the application number 2017800106173, the application date is February 14, 2017, and the title of the invention is "hard coating film, polarizing plate using the hard coating film, hard coating film processed products, display parts" Divisional application. technical field [0002] The present invention relates to a hard coat film used for a display device, a polarizing plate using the hard coat film, a processed hard coat film, and a display member. Background technique [0003] In display components such as liquid crystal display panels and touch panels, hard coats are used to improve surface hardness and scratch resistance. The hard coat film is obtained by forming a hard coat layer composed of a cured film of a resin composition on the surface of a transparent substrate. Along with the reduction in thickness and weight of display devices in recent years, reduction in thickness of hard coating films is also required, and redu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/14G02B5/30G02F1/1335B32B27/20B32B23/08
CPCG02B1/14G02B5/30B32B27/20G02F1/1335B32B23/08B32B2307/412B32B2307/42B32B2307/536
Inventor 新纳干大松井佑纪男
Owner TOPPAN TOMOEGAWA OPTICAL FILM CO LTD