Coating device and method
A coating device and coating technology, which is applied to the device, coating, pipe structure parts, etc. for coating liquid on the surface, which can solve the problem of short product life, difficult control of coating liquid film thickness, and inability to stop coating immediately. Liquid discharge and other problems, to achieve the effect of excellent reproducibility and reliable suction
Inactive Publication Date: 2008-07-02
CHUGAI RO CO LTD
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Problems solved by technology
[0004] However, in the above-mentioned conventional coating device, even if the pump is reversely rotated, since the piping from the pump to the slot nozzle is long, the discharge of the coating liquid from the slot nozzle cannot be immediately stopped due to the residual pressure in the piping.
Therefore, it is very difficult to control the film thickness of the coating liquid at the coating end position
In addition, if the pump is reversed in advance in consideration of the residual pressure, the influence of various parameters such as the viscosity of the coating liquid and the friction with the inner surface of the pipe must be considered, which is virtually impossible.
In addition, there is a problem that the life of the product is shortened by applying a forced load by rotating the pump in the reverse direction.
Method used
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[0028] Embodiments of the present invention will be described below with reference to the drawings.
[0029] (first embodiment)
[0030] FIG. 1 is a schematic explanatory diagram of a coating device according to the present embodiment. This coating device generally includes: a coating liquid tank 1 ; a coating liquid supply device 2 ; a coating liquid discharge device 3 ; a support table 4 ; a coating liquid suction device 5 ;
[0031] The coating liquid is stored in the coating liquid tank 1, and the coating liquid can be supplied to the coating liquid supply device at any time. As the coating liquid, for example, a glass paste for PDP coated on a glass substrate can be used. However, it is not limited thereto, and an appropriate coating liquid may be selected from conventionally known various coating liquids depending on the type of the member 13 to be coated.
[0032] The coating liquid supply device 2 has: a cylindrical first cylinder 7; a first piston 8 reciprocating w...
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A coater, and a coating method are provided to allow the distribution of the thickness of a coated film to be uniform and to prevent the breakdown for a long time by allowing the coater to be adjusted easily. The coating process of a coater is carried out by supplying a coating solution to the coating solution discharge device(3) by operating a coating solution supply device(2) with moving a coating solution discharge device horizontally relatively to the member(13) to be coated loaded on a support(4) so as to allow the coating solution to be coated through the nozzle(12) of the coating solution discharge device on the member to be coated, wherein the coater comprises a manifold(19) which is installed on the way from the coating solution discharge device to the nozzle; a coating solution suction device(5) which sucks the coating solution from the nozzle through the manifold; and a control device(6) which initiates the coating solution suction of the coating solution discharge device by allowing the front aperture of the coating solution discharge device to be reached the final coating region of the member to be coated.
Description
technical field [0001] The present invention relates to a coating device and a coating method for forming a coating film on the surface of a member to be coated such as a liquid crystal display panel and a PDP (Plasma Display Panel) using a coating solution. Background technique [0002] Conventionally, as a coating device, a structure in which a slot nozzle is relatively lowered and a pump is rotated in reverse to suck a coating liquid at or immediately before the coating end position is disclosed (for example, refer to Patent Document 1). [0003] Patent Document 1: Japanese Patent Laid-Open No. 2002-113411 [0004] However, in the above-mentioned conventional coating device, even if the pump is reversely rotated, since the piping from the pump to the slot nozzle is long, the discharge of the coating liquid from the slot nozzle cannot be immediately stopped due to the residual pressure in the piping. . Therefore, it is very difficult to control the film thickness of the ...
Claims
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IPC IPC(8): B05C5/02B05C11/10B05D1/26H01J9/02H01J11/20H01J11/22H01J11/34
CPCB05C5/0229B05C11/1031B05D1/26H01J9/02H01J11/22H01J11/34
Inventor 梶谷雅一近藤尚城野尻大介肥田充弘永井久也青木正美
Owner CHUGAI RO CO LTD