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Laminated structure body

A technology of structure and fine concave-convex structure, applied in the direction of coating, layered products, synthetic resin layered products, etc., can solve the problems of large adhesion force, insufficient adhesion force, etc., and achieve the effect of easy peeling

Active Publication Date: 2014-08-20
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the past, the adhesive film bonded on the anti-glare structure or the prism structure with the average interval of the protrusions larger than the wavelength of visible light is difficult to stick on the surface of the fine concave-convex structure with the average interval of the protrusions below the wavelength of visible light.
That is, the conventional adhesive film tends to fail to obtain sufficient bonding force, or conversely, the problem of excessive bonding force tends to occur.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0272] Production of adhesive film:

[0273] On the corona-treated surface of polypropylene (film substrate) with a thickness of 40 μm that was corona-treated on one side and produced by the T-die forming method, acrylic polymers and cross-linked polymers dissolved in For the adhesive solution of the joint agent, the thickness of the coating is based on the thickness of the adhesive layer after drying being 5 μm. After drying, roll the adhesive layer toward the inside and perform aging treatment to produce an adhesive film A with a low-speed peeling force P: 0.2N / 25mm and a high-speed peeling force Q: 0.1N / 25mm against an acrylic resin plate (manufactured by Daio Converted Paper Co., Ltd., FM-325).

[0274] Fabrication of Laminated Structures:

[0275] Set the roller mold on image 3 In the manufacturing apparatus 30 shown, the article 10 is manufactured as follows, and the laminated structure 1 is manufactured continuously.

[0276] First, if image 3As shown, a drum-sha...

Embodiment 2

[0283] In addition to using an adhesive film B (manufactured by Daio Paper Industry Co., Ltd., S-7) with a low-speed peeling force P of 0.8 N / 25 mm and a high-speed peeling force Q of 0.25 N / 25 mm relative to the acrylic resin plate, the same as in Example 1 A laminated structure was fabricated and evaluated in the same manner. The results are shown in Table 1.

Embodiment 3

[0285] In addition to using an adhesive film C (manufactured by Daio Paper Industry Co., Ltd., FM-355) with a low-speed peeling force P of 1.0 N / 25 mm and a high-speed peeling force Q of 0.3 N / 25 mm relative to the acrylic resin plate, the same as in Examples 1 A laminated structure was fabricated and evaluated in the same manner. The results are shown in Table 1.

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Abstract

A laminated structure body includes an article, which has a micro concave-convex structure on a surface thereof, and an adhesive film in contact with the surface of the article having the micro concave-convex structure thereon. An average space between convex parts of the micro concave-convex structure is equal to or less than 400 nm. According to JIS Z0237: 2009, a low-speed peeling force of the adhesive film to an acrylic resin sheet, measured by a specific method, is equal to or greater than 0.01 N / 25 mm, and equal to or less than 2.5 N / 25 mm. A ratio of a high-speed peeling force of the adhesive film to the acrylic resin sheet to the low-speed peeling force of the adhesive film to the acrylic resin sheet (high-speed peeling force / low-speed peeling force) is equal to or less than 2.

Description

technical field [0001] The present invention relates to a laminated structure characterized in that the surface of an article having a fine uneven structure on the surface is protected by an adhesive film on the side of the fine uneven structure. [0002] this application claims priority based on Japanese Patent Application No. 2011-284679 for which it applied to Japan on December 27, 2011, and uses the content here. Background technique [0003] Since various image display devices, lenses, windows, etc. have a problem of reduced visibility due to reflection of sunlight or illuminated light on the surface, an antireflection film is sometimes attached to the surface. [0004] As an antireflection film, a film having a fine concave-convex structure on the surface of a substrate attracts attention. In particular, a fine concave-convex structure called a moth-eye (Moth-Eye) structure has a plurality of side-by-side roughly conical or pyramid-shaped protrusions (convex parts) th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B7/06B32B3/30G02B1/11G02F1/1335G09F9/00
CPCG02B1/118Y10T428/24355B32B2255/10B32B2307/714B32B2307/538B32B2307/412B32B2307/408G02B1/111G02F1/133502B32B7/12G01L5/0033B32B27/06B32B2307/748B32B3/00B32B2307/728B32B2457/20B32B2307/73B32B2250/02B32B7/06G01N19/04B32B2250/24B32B27/08B32B2551/00B32B2255/26G02F1/133504
Inventor 中井祐介牧野伸治
Owner MITSUBISHI CHEM CORP