Coating device using roller with double blades, and method for producing optical film by using the same

A coating device, double-blade technology, applied to the surface coating liquid device, optics, optical components, etc.

Inactive Publication Date: 2009-05-13
TORAY SAEHAN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The present invention serves

Method used

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  • Coating device using roller with double blades, and method for producing optical film by using the same
  • Coating device using roller with double blades, and method for producing optical film by using the same
  • Coating device using roller with double blades, and method for producing optical film by using the same

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Embodiment Construction

[0025] Hereinafter, embodiments of the present invention and accompanying drawings will be described in detail.

[0026] It will be apparent to those skilled in the art that these embodiments are intended to explain the present invention in more detail, but not to limit the scope of the present invention.

[0027] Figure 3 illustrates a conventional gravure coating apparatus with rolls. A method of producing an optical film using a conventional coating device with a roll will now be described with reference to FIG. 3 . First, the liquid pan 12 contains the coating liquid 20 . In the liquid pan 12, the lower end 1 / 3 of a mesh roll 200 as a coating liquid transfer roll is dipped in the coating liquid, which is rotated. The anilox roll 200 as a coating liquid transfer roll contacts the back roll 2 and is rotated. The film 10 is transferred through the gap between the roll 2 and the roll 200 . The coating liquid 20 contained in the liquid pan 12 overflows out of the liquid pan...

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Abstract

The invention relates to a roller coating apparatus with double knife blades and a method for manufacturing optical films by using the same. In order to reduce the product loss and defect ratio, another rear knife blade is arranged in a common gravure coating apparatus to remove coating liquid air bubbles which is produced in a long time continuous production and is transferred on the gravure roller, thereby remaining the stability of the production process for a long time and obtaining an even coating and a favorable appearance. The coating apparatus according to the invention comprises a gravure coating liquid transfer roller for transferring the coating liquid in a liquid disk to films and rotating the roller when a third of the roller is dipped in the coating liquid in the liquid disk; a fore knife blade arranged in front of the gravure roller for scraping redundant coating liquid and leaving given quantity of coating liquid to be transferred by the gravure roller; and the rear knife blade arranged on the back side of the gravure roller for preventing the bubbles from generating on the gravure roller surface.

Description

technical field [0001] The present invention relates to a coating device using a roll with double blades and a method of manufacturing an optical film using the same, and more particularly, to a coating device using a roll with double blades and manufacturing an optical film using the device as follows The method, in order to reduce the loss and defect ratio of the product, by installing an additional rear blade in a common gravure coating device to remove the coating liquid bubbles transferred to the gravure roller during long-term continuous production, thereby Maintain the stability of the production process for a long time, and can get a uniform coating and its good appearance. Background technique [0002] Generally, a CRT in a TV, an LCD monitor in a computer or a PDP TV are used to display pictures on a screen using electrical signals. Since most of them use high voltages, it is known that static electricity, electromagnetic waves and surface reflections that are unh...

Claims

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Application Information

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IPC IPC(8): B05C1/12B05C11/04B05C11/10B05D7/24
CPCB05C1/08G02B1/111H01J2209/015H01J2211/442
Inventor 郑智薰李文馥徐基奉严相烈金相弼崔光辉
Owner TORAY SAEHAN
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