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Pre-metering roll type coating device

A coating device, roll coating technology, applied to the surface coating liquid device, coating, etc., can solve problems such as improper installation of the scraper, environmental pollution of the coating station, and unguaranteed coating thickness. To achieve precise control, beneficial to physical properties, and beneficial to the effect of stability

Active Publication Date: 2010-10-20
CHINA LUCKY FILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] ①.It does not belong to the predetermined amount coating method, there are many factors affecting the thickness of the coating, and the thickness is difficult to control, which directly affects the stability of product performance;
[0004] ②. The pattern of the micro-gravure roller makes it difficult to produce a smooth, smooth and bright surface on the surface of the coating film, which cannot meet the performance requirements of optical-grade film products;
[0005] ③. Micro-gravure rollers are actually easy to be damaged and worn, corresponding to different thicknesses need to be equipped with multiple gravure rollers, and the processing cost of micro-gravure rollers is relatively high;
[0006] ④. Improper installation of the scraper and unreasonable adjustment of the scraper pressure will affect the coating appearance
[0007] In addition, in the micro-gravure coating process of open liquid supply, the volatility of the solvent in the low-boiling solvent coating liquid causes the solid content of the coating liquid to be unstable, so that the thickness of the coating cannot be guaranteed, and the coating station cannot Environmental pollution, endangering the health of operators

Method used

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  • Pre-metering roll type coating device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The present invention is described with reference to the accompanying drawings.

[0037] Coating roller 1 is 600mm long, 30mm in diameter, bearing housing 8 is equipped with at both ends, wherein one end is connected with drive motor 7 by coupling 6, rotates under the drive of drive motor 7.

[0038] The slit die head 2 is installed on the coating base 5 that can advance and retreat, and the inclination angle of the die head is 30°. Liquid supply gap d is controlled at 0.03mm.

[0039] The coating solution 9 is supplied to the filtering and defoaming device by a precision metering pump, and enters the slot die 2 after filtering and defoaming, and is extruded from the outlet gap h after passing through the flow equalization chamber 11, and the outlet gap h is set to 0.05mm .

[0040] When coating starts, the guide rollers 3, 3' press the base material 4 to the position where it contacts the coating roller 1, and the wrap angle β is controlled at 5° by adjusting the ver...

Embodiment 2

[0042] The coating process is the same as in Example 1, wherein: α is 90°, β is 10°, d is 0.05mm, h is 0.1mm, and the rate ratio is 1:1. The coating test results are shown in Table 1.

Embodiment 3

[0044] The coating process is the same as in Example 1, wherein: α is 20°, β is 0°, d is 0.01 mm, h is 0.02 mm, and the rate ratio is 1:1.5. The coating test results are shown in Table 1.

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Abstract

The invention discloses a pre-metering roll type coating device. The coating device comprises a coating roll, a liquid supply system and a coating sheet path control system, wherein the coating roll has surface finish; the liquid supply system continuously supplies coating liquid to a slit die head by using a precision metering pump; and the coating sheet path control system is used for adjusting a wrap angle beta between a base material and the coating roll and consists of two rolls with adjustable horizontal and vertical positions, wherein a liquid supply clearance d is reserved between a lip mouth end face A of the slit die head and the coating roll, the numerical value of the liquid supply clearance d is between 0.01 and 0.1 millimeter, and the wrap angle beta between the base material and the coating roll is between 0 and 30 degrees. The coating device is mainly applied to coating and processing of a continuous flexible sheet material surface coating such as various optical films for LDC and PDP displays and conductive films in the field of solar cells and the like, and can realize precise controllability of the coating thickness; and the coating has good thickness uniformity and smooth surface.

Description

technical field [0001] The invention relates to a roller coating device which can pre-set the coating volume value. Background technique [0002] With the rapid development of LCD, PDP display and thin-film battery energy industries, product competition has become increasingly fierce, and higher requirements have been placed on product performance. How to reduce production costs and improve product performance has become the focus of the industry. The main features of these products are: thin coating, high uniformity requirements, smooth surface. At present, the coating methods of these products are mostly malt bar coating (rod coating) or micro-gravure coating. Among them, bar coating can achieve coating coating with nanometer thickness, but the coating is uniform It is difficult to guarantee that the performance is affected by the quality of the stick bed and scraping stick. This coating method is generally used for thin-layer coatings that do not require high uniformity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C1/08B05C11/10B05C11/08B05C13/02
Inventor 邢成君彭朝利
Owner CHINA LUCKY FILM CORP
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