Cleaning method of roller type mold for manufacturing optical film

A technology of optical film and mold, applied in the field of cleaning of roller molds, can solve the problems of insufficient cleaning efficiency and unsatisfactory satisfaction

Inactive Publication Date: 2011-09-21
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although various cleaning methods for the above-mentioned roller molds have been proposed, none of them is sufficiently satisfactory in terms of cleaning efficiency.

Method used

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  • Cleaning method of roller type mold for manufacturing optical film
  • Cleaning method of roller type mold for manufacturing optical film
  • Cleaning method of roller type mold for manufacturing optical film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) Manufacture of roll mold

[0050] A roll having a diameter of 200 mm of an aluminum roll (A5056 according to JIS) provided with Ballard copper plating (Ballard plating copper) on the surface was prepared. Ballard copper plating includes copper plating layer / thin silver plating layer / surface copper plating layer, and the overall thickness of the plating layer is set at about 200 μm. The copper-plated surface is mirror-polished, a photosensitive resin is coated on the polished copper-plated surface, and a photosensitive resin film is formed after drying. Next, it will be as figure 2 A pattern in which the shown patterns are repeatedly arranged is exposed on the photosensitive resin film with a laser, and developed. Laser exposure and development were performed using Laser Stream FX (manufactured by Think Laboratory).

[0051] It should be noted that, if figure 2 The image data of the shown pattern has a size of 20.9 mm×20.9 mm and was created at 12800 dpi. As ...

Embodiment 2

[0058] Cleaning was performed under the same conditions as in Example 1, except that the solvent of the cleaning solution was changed from pure water to a mixed solution of pure water and ethanol (weight ratio = 1:1).

Embodiment 3

[0060] Cleaning was performed under the same conditions as in Example 1 except that the content of "Clean-thru PA970" (registered trademark) was 1% by weight.

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Abstract

The present invention provides a cleaning method of a roller type mold for manufacturing an optical film. The cleaning method of the invention is characterized in that: the roller type mold which is provided with adhered mold pollutant is placed in alkaline water solution with pH value that is above 10. Furthermore an ultrasonic wave treatment is performed for the roller type mold under a temperature of 30-70 DEG C. The cleaning method does not damage the roller type mold and can well protect a polluted surface. Therefore, the cleaning method is preferably used for a state that the mold pollutant is photocurable resin.

Description

technical field [0001] The present invention relates to the technical field of manufacturing optical films such as prism films, diffusion films, and anti-glare films used in liquid crystal display devices, and more specifically relates to a method of cleaning roll molds used in the manufacture of optical films. Background technique [0002] Optical films such as prism films, diffusion films, and anti-glare films used in liquid crystal display devices, for example, are known in which the surface shape of a roll mold is transferred to the film by extruding and bonding a film-like resin to the surface of the roll mold. After being applied, the film is peeled off from the roll mold to manufacture. [0003] When the optical film is continuously produced by this method, a part of the resin constituting the optical film gradually remains on the surface of the roll mold as mold contamination and begins to accumulate. Therefore, in order to continuously manufacture high-quality opti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B3/12G02B1/11B29C33/70B29C59/04B29K101/10B29L7/00B29L11/00
CPCB22C9/20B22C19/02
Inventor 田中朋子古谷勉神野亨
Owner SUMITOMO CHEM CO LTD
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