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Blanking device for optical film and blanking method for optical film

An optical film and blanking technology, applied in metal processing and other directions, can solve the problems of not being able to effectively prevent dust adhesion and easy generation of dust, and achieve the effect of preventing electrification of the optical film and being easy to manufacture

Inactive Publication Date: 2007-11-28
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when the surface roughness of the contact surface of the press plate is increased as in the above-mentioned conventional punching device, dust is easily generated on the contrary, and dust adhesion cannot be effectively prevented.

Method used

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  • Blanking device for optical film and blanking method for optical film
  • Blanking device for optical film and blanking method for optical film
  • Blanking device for optical film and blanking method for optical film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (When organic solvent-soluble polyaniline is used for the polypropylene film of the conductive treatment layer 11)

[0057] 6000 g of distilled water, 360 ml of 36% hydrochloric acid, and 400 g (4.295 moles) of aniline were sequentially added to a 101 (10 liter) separable flask equipped with a stirring device, a thermometer, and a straight pipe joint to dissolve the aniline. Separately, while cooling with ice water, 434 g (4.295 mol) of 97% concentrated sulfuric acid was added and mixed to 1493 g of distilled water in a beaker to prepare a sulfuric acid aqueous solution. This sulfuric acid aqueous solution was put into the said separable flask, and the whole flask was cooled to -4 degreeC with the cryostat.

[0058] Then, 980 g (4.295 mol) of ammonium peroxodisulfate was added and dissolved in 2293 g of distilled water in a beaker to prepare an aqueous oxidizing agent solution. Cool the flask as a whole in a low-temperature constant temperature tank, and keep the tempe...

Embodiment 2

[0066] (When a mixture of organic solvent-soluble polyaniline and binder polymer is used for the polyethylene terephthalate film of the conductive treatment layer 11)

[0067] Prepare 100 parts by weight of polyaniline obtained in Example 1, 200 parts of malonic acid, 100 parts of linear saturated polyester resin "Byron RV-290" manufactured by Toyobo Co., Ltd., and 1.0% by weight of N-methyl- 2-pyrrole solution to make a coating solution.

[0068] This coating solution was applied to one side of a polyethylene terephthalate film with a thickness of 480 μm, and dried in a hot air dryer at 80° C. for 2 minutes to form a conductive treatment layer 11 with a thickness of 0.1 μm.

[0069] The obtained film had a surface resistance of 9 × 10 7 Ω / □. The surface roughness Ra of the surface of the polyethylene terephthalate film on the side opposite to the conductive treatment layer 11 was 0.067 μm, and Rz was 0.351 μm.

Embodiment 3

[0071] (When poly 3,4-dioxythiophene is used for the polypropylene film of the conductive treatment layer 11)

[0072] A 5% by weight isopropanol solution of 100 parts of 3,4-dioxythiophene and 500 parts of iron p-toluenesulfonate was applied to one side of a polypropylene film having a thickness of 500 μm, and left to stand at room temperature. Polymerization proceeds to form a thin film on the substrate. This was washed with running water and dried to form a conductive treatment layer 11 with a thickness of 0.05 μm.

[0073] The obtained film had a surface resistance of 3 × 10 8 Ω / □. The surface roughness of the surface of the polypropylene film on the opposite side to the conductive treatment layer 11 was the surface roughness of the non-conductive treatment surface as in Example 1 and Example 2.

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Abstract

The invention provides a blanking apparatus of optical membrane and blanking method of optical membrane. The said blanking apparatus can prevent the dust adhere to the optical membrane by suppressing generating statical electricity on blanking optical membrane. The blanking apparatus of optical membrane comprises mat and blanking cutter for loading optical membrane to blank the optical membrane loaded on the mat, wherein the surface opposite to the blanking cutter contact surface on the said mat is performed conduction treatment.

Description

technical field [0001] The invention relates to a punching device and a punching method for optical films such as polarizing films and the like into required sizes and shapes required by products to form optical films. Background technique [0002] In general, an optical film mounted on a surface such as a display (such as a polarizing film) is manufactured by punching (cutting) a long optical film or a rectangular optical film into a desired size using a punching knife . For example, in the punching device described in the following patent document 1, a punching knife is erected on a base, and a pressing plate is pushed to the optical film from above through the optical film, and the optical film is placed between the punching knife and the pressing plate. The film is punched into an optical film of the required size. [0003] However, static electricity tends to be easily generated when an optical film is usually punched out, and the optical film is easily charged. In a...

Claims

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Application Information

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IPC IPC(8): B26F1/38B26F1/44B26D7/08
CPCB26D7/1845B26F1/40
Inventor 金子铁夫大谷彰重松崇之
Owner NITTO DENKO CORP
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