Method for manufacturing polarization plate and manufacturing device therefor
A manufacturing method and a manufacturing device technology, which are applied in the field of manufacturing methods and manufacturing devices of special-shaped polarizing plates, and can solve the problems that the blade cannot rotate stably and the resistance to rotation becomes high, etc.
Inactive Publication Date: 2018-04-17
NITTO DENKO CORP
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Problems solved by technology
However, none of the above-mentioned proposals is merely a proposal related to the final processing of the edge of the cutting edge after cutting the polarizing plate into a rectangle, and is not a technology for performing concave processing on the polarizing plate itself.
In addition, in the above-mentioned proposal, there is no disclosure about the problem that cracks or bending occur when the polarizing plate is subjected to fine concave processing.
[000
Method used
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[0126] Hereinafter, Examples etc. which concretely show the structure and effect of this invention are demonstrated.
[0127] [Example, Comparative Example]
[0128] Regarding the implementation of processing in Examples and Comparative Examples, the conditions and processing methods shown in the following Table 1 were used. Figure 5 The machining shape shown is carried out. Moreover, the laminated body which laminated the surface protection film (PPF-100T) by Nitto Denko Co., Ltd. on the polarizing plate (NPF-CWQ1463VDUAG380-ACJ) by Nitto Denko Co., Ltd. was used as a to-be-processed body. be explained, Figure 5 The unit in is mm. In addition, in Examples 1 and 2 and Comparative Examples 1 and 2, cutting was performed with the cutting edge of the end mill facing downward.
[0129]
[0130] (Measurement and Evaluation of Shape Freedom)
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Abstract
The present invention pertains to providing: a method for manufacturing an irregularly shaped polarization plate having in particular a small-diameter recessed round part and/or hole part, wherein discoloration, or cracking or snapping, produced in the irregularly shaped polarization plate during machining, and the accumulation of scraping residue at the root section of a blade of an end mill, areinhibited; and a manufacturing device therefor. A method for manufacturing an irregularly shaped polarization plate having a recessed round part, wherein the method is characterized in including a step for forming the recessed round part using a cutting means in which a blade comes into contact from the lateral direction with a surface to be cut and performs cutting, the cutting means being an end mill, and the direction of rotation of the end mill being counterclockwise as viewed from the shank side if the blade of the end mill is a left hand cut right hand helix, and clockwise as viewed from the shank side if the blade of the end mill is a right hand cut left hand helix.
Description
technical field [0001] The invention relates to a manufacturing method and a manufacturing device of a special-shaped polarizing plate. In more detail, it is related with the manufacturing method of the irregular-shaped polarizing plate which has concave rounded corner part and / or hole part, and its manufacturing apparatus. In addition, the present invention also relates to an optical film using the special-shaped polarizing plate. In addition, it also relates to image display devices such as liquid crystal display devices, organic EL display devices, and PDPs using the special-shaped polarizing plate and the optical film. Background technique [0002] In recent years, it has become desirable to use polarizing plates in instrument display units of automobiles, smart watches, and the like. In addition, it is also desirable to use the polarizing plate in a shape other than rectangular, to form a through hole in the polarizing plate, etc., from the viewpoint of the design of ...
Claims
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Login to view more IPC IPC(8): B23C3/00B23C5/10G02B5/30
CPCB23C3/00B23C5/10G02B5/30
Inventor 樋口直孝仲井宏太大濑雄基
Owner NITTO DENKO CORP
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