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Manufacturing method of absorption roller and optical film

A manufacturing method and optical film technology, which can be used in thin material processing, transportation and packaging, and winding strips, etc., can solve problems such as adverse effects on image quality, and achieve the effect of preventing micro-scratches

Inactive Publication Date: 2011-11-16
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In recent years, with the increase in pixels of liquid crystal displays, even fine scratches on the anti-reflection film will adversely affect the image quality
Such as having the undesirable effect of scattering light from a backlight

Method used

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  • Manufacturing method of absorption roller and optical film
  • Manufacturing method of absorption roller and optical film
  • Manufacturing method of absorption roller and optical film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 13

[0071] In the suction roller 34 of Example 13, the suction hole 36 , the spot facing portion 55 , and the boundary portion 56 are formed so as to satisfy the above formulas (2) and (3) except that h / D>0.2250. In the suction roller 34 of Example 14, the suction hole 36 , the spot facing portion 55 , and the boundary portion 56 are formed so as to satisfy the above formulas (1) and (2) except that D<1.5.

[0072] And, as shown in the following Table 3, in the suction rollers of Comparative Examples 1 to 3, the boundary portion 56 was not chamfered and the edge 60 was left on the boundary portion 56 (see Figure 9 ). In addition, in the suction roller of Comparative Example 1, the suction hole 36 , the spot facing portion 55 , and the boundary portion 56 are formed so as to satisfy the above formulas (1) and (3) except that L / D<1.15. The suction rollers of Comparative Example 2 and Comparative Example 3 were formed under the same conditions as in Example 1 and Example 2, respect...

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Abstract

The invention provides a manufacturing method of an absorption roller and a manufacturing method of an optical film. A plurality of absorption holes (36) are formed on the peripheral surface (38a) of a roller body (38) of the absorption roller, and a hole sinking part (55) is formed on the opening part on the peripheral surface (38a) of each absorption hole (36). The hole sinking part (55) is substantially conical and the diameter thereof gradually increases towards the peripheral surface side. Chamfering processing for forming edges is performed on the boundary of the inner wall (55a) of the hole sinking part (55) and the peripheral surface (38a). Therefore, a protruding curved surface is formed on the boundary part (56). Belt shaped TAC films are wound on the peripheral surface (38a) of the roller body (38). The roller body (38) rotates and absorbs air from the absorption holes (36). Therefore, the TAC films attach to the peripheral surface (38a) through the absorption holes (36) and are conveyed via the absorption roller.

Description

technical field [0001] The present invention relates to a method of manufacturing a suction roll that adsorbs and conveys a belt-shaped sheet on an outer peripheral surface, and a method of manufacturing an optical film using the suction roll to produce an optical film. Background technique [0002] In liquid crystal displays, various optical films are used for purposes such as protection of polarizing plates and expansion of viewing angles. An antireflection film is known as one of such optical films. The antireflection film is a film that prevents reflection on the surface of a liquid crystal display. The antireflection film is produced by providing a hard coat layer or an antiglare (antiglare) hard coat layer on one side of a triacetate cellulose film (hereinafter referred to as TAC film), and providing an antireflection layer thereon. The TAC film becomes the support of the anti-reflection film. The antireflection layer is composed of a low reflection layer and the li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B65H20/12
Inventor 胁美文
Owner FUJIFILM CORP
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