Manufacturing method and manufacturing apparatus of anti-glare film
An anti-glare film and a manufacturing method technology, which are applied to devices, nonlinear optics, instruments, etc. for coating liquid on the surface, can solve the problems of production speed limitation, inability to achieve optical performance, uneven concentration distribution and drying, etc. The effect of productivity
Active Publication Date: 2017-09-19
FUJIFILM CORP
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Problems solved by technology
However, at this time, the following problems occur: uneven drying tends to occur due to Marangoni convection or Rayleigh convection caused by dry wind or uneven ambient gas concentration distribution, and in-plane Uniform Optical Properties
Therefore, not only the time required to prevent uneven drying but also the time required for coagulation needs to be ensured, so there is a limit to the production speed (downsizing of the drying device size)
Method used
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Experimental program
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Effect test
Embodiment 1
[0163] In order to demonstrate this invention in detail, although an Example is given and demonstrated below, this invention is not limited to these.
[0164] In the tests of the examples, the differences in the antiglare properties of the produced antiglare films were studied by utilizing the differences in the timing at which the movement of the web shifted from the aggregation line 18A to the disintegration suppression line 18B. In addition, the difference in antiglare property between the case where montmorillonite was added to the coating liquid and the case where montmorillonite was not added was examined.
[0165] (Preparation of coating solution for anti-glare layer)
[0166]
[0167]
[0168]
[0169]The above-mentioned coating liquid for anti-glare layer was filtered through a polypropylene filter with a pore size of 30 μm to prepare a coating liquid before particle-free, thereby forming a coating liquid before particles were added without particles. status....
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Abstract
The present invention can produce a good and uniform anti-glare film at a high production rate because the agglomeration effect of the particles can be maximized. An anti-glare film manufacturing apparatus for manufacturing an anti-glare film, comprising at least a coating device (16) that coats a moving belt-shaped web (12) with a coating liquid containing particles, and A drying device (18) that dries the applied coating film; wherein the drying device (18) is provided with: an agglutination line (18A) that inclines the web (12) at a first inclination angle with respect to a horizontal plane and moving to dry while agglomerating particles in the coating film; and a dissolution suppression line ( 18B ) that moves the web ( 12 ) at a second inclination angle that is smaller than the first inclination angle, thereby suppressing The aggregate formed by agglomerating the particles is dried while dissolving.
Description
technical field [0001] The present invention relates to a production method and a production apparatus of an antiglare film, and particularly to a production method and a production apparatus of an antiglare film used in display devices such as liquid crystal display devices. Background technique [0002] In display devices such as liquid crystal display devices, an anti-glare film is used in order to prevent image reflection due to reflection of outdoor light. Known anti-glare films are roughly classified into the following four types. That is, (1) by applying a coating liquid mixed with particles having a larger particle size with respect to the film thickness of the antiglare layer on a support and drying the particles to protrude and form surface irregularities, on the uneven surface "Particle utilization, external scattering anti-glare film" that scatters outdoor light; "Particle utilization, internal scattering type anti-glare film" in which light is scattered in the...
Claims
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IPC IPC(8): G02B5/02G02F1/1335B05D3/00B05D7/24
Inventor 长谷川昌孝原泽岳彦
Owner FUJIFILM CORP