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Pole coating apparatus and pole coating method

A coating device and coating technology, which is applied to the device and coating of the surface coating liquid, can solve the problem of thickening and other problems, and achieve the effect of preventing thickening of the end and high peeling effect

Inactive Publication Date: 2011-01-05
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, in the rod coating of Patent Document 1 or Patent Document 2, since the coating liquid is overflowed from the liquid reservoir on the primary side of the rod to apply the coating liquid to the film, there is a gap in the width direction of the coating film. The problem that the thickness of the upper end becomes thicker

Method used

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  • Pole coating apparatus and pole coating method
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  • Pole coating apparatus and pole coating method

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Embodiment Construction

[0057] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. Although the present invention will be described using preferred embodiments below, it can be changed in various ways without departing from the scope of the present invention, and other embodiments other than this embodiment can be utilized. Therefore, all modifications within the scope of the present invention are included in the scope of claims. In addition, in this specification, the numerical range represented using "-" means including the numerical range described before and after "-".

[0058] figure 1 It is a cross-sectional view schematically showing an example of a rod coating device. The rod coating device 10 is a device for coating a coating liquid on a thin strip (belt state) 40 continuously traveling in the traveling direction.

[0059] Such as figure 1 As shown, the rod coating device 10 of the present invention includes a coating head 12 prov...

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Abstract

The present invention provides a pole coating apparatus and a pole coating method, capable of preventing the thickness of a coating film from thickening on the ends in the width direction. The coating apparatus includes a pole (11) contacting with a running belt-shaped body (40) and simultaneously rotating; a weir (28) arranged on the upstream side of the running direction of the belt-shaped body relative to the pole (11) and provided with a liquid storage part (26) for supplying a coating liquid to the belt-shaped body (40) and the pole (11); a coating liquid decrement component (50) arranged on two outer sides of the weir (28) in the width direction of the belt-shaped body (40) to scrape the coating liquid coated on the two ends in the width direction of the belt-shaped body (40).

Description

technical field [0001] The present invention relates to a rod coating device and a rod coating method, and more particularly to a coating technique for producing an optical film having a quality suitable for a liquid crystal display device. Background technique [0002] In coating to produce an optically functional film such as an optical compensation film, it is required to apply a coating liquid uniformly and in a thin layer. However, in such thin-layer coating, longitudinal striations or streak failures often occur, and various countermeasures have been studied in the past. [0003] For example, in order to suppress the occurrence of irregular eddy currents in the liquid reservoir provided on the primary side (the upstream side of the strip traveling direction) of the coating device, it has been proposed to place the liquid reservoir in the direction of travel of the strip (ribbon) The length is set to not less than 10 mm and not more than 50 mm (Patent Document 1). [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C1/08B05C11/02
Inventor 三田俊哉横山广树浜本伸夫
Owner FUJIFILM CORP