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Electrolytic treatment device and electrolytic treatment method

A technology of electrolytic treatment and electrolyte, applied in the direction of electrolytic components, electrolytic process, etc., which can solve problems such as fracture, damage or deformation of electrical insulating plates, and poor conveyance of strips

Inactive Publication Date: 2009-09-16
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, if the distance between the electrical insulating plate and the strip is narrowed in order to reduce the spread of the back surface, then when the electrical insulating plate is formed of a softer material such as plastic, the side edge of the strip invades the electrical insulating plate, and the strip The part where the side edge intrudes into the electrical insulating plate may be damaged or deformed, broken, etc.
In addition, the close contact between the strip and the surface of the electrical insulation plate may cause a large resistance in the strip and cause poor conveyance of the strip.

Method used

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  • Electrolytic treatment device and electrolytic treatment method
  • Electrolytic treatment device and electrolytic treatment method
  • Electrolytic treatment device and electrolytic treatment method

Examples

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Embodiment approach 1

[0045] An example of the electrolytic treatment apparatus of the present invention, that is, an electrolytic roughening apparatus for roughening one surface of an aluminum web by an electrochemical method will be described.

[0046] [structure]

[0047] like figure 1 As shown, the electrolytic roughening device 100 of Embodiment 1 has: an electrolytic tank 1, which stores an acidic electrolyte solution inside, and transports the aluminum sheet W desired to be electrolytic roughened along the horizontal direction, and is a bottomed container with an open upper surface. A group of electrodes 2, which are arranged above the conveying path P of the aluminum sheet W inside the electrolytic cell 1; insulating plates 3, which are arranged below the conveying path P inside the electrolytic cell 1; guide rollers 4 , which guides the aluminum web W along the transport path P inside the electrolytic cell 1 .

[0048] Therefore, the insulating plate 3 is disposed on the opposite side of...

Embodiment 1～4

[0070] 1. Examples 1-4, Comparative Examples 1-3

[0071] use figure 1 In the electrolytic roughening device 100 of the shown form, an aluminum web is roughened by the electrolytic roughening device 100 . As the aluminum sheet, use pure aluminum with a thickness of 0.3mm and a width of 1000mm, the conveying speed is 50m / min, and the current density applied to each small electrode 2A of the electrode 2 is 75-125A / dm 2 , 60 Hz sine wave current, the target value of the surface roughness of the roughened surface was set to 0.5 μm, and electrolytic roughening was performed. As the acidic electrolytic solution, an aqueous hydrochloric acid solution having a concentration of 10 to 18 g / L is used.

[0072] In the electrolytic roughening device 100, the width of the electrode 2 is 1500 mm, and as the insulating plate 3, the following insulating plate is used, which is a non-scaling plate of polypropylene resin (specific gravity: 0.94) with a thickness of 15 mm and a width of 1200 mm...

Embodiment 5、6

[0080] 2. Embodiment 5, 6, reference example 1

[0081] As the insulating plate 3, the following insulating plate is used, which is a 15mm-thick polypropylene resin (specific gravity: 0.94) non-scaling plate, and the surface opposite to the electrode 2 is a flat surface (reference example 1), such as Figure 7 As shown, through-holes 34 are formed in a checkerboard pattern on the entire surface of the above-mentioned surface (Example 5), and as shown in FIG. Figure 8 As shown, grooves 35 in a direction perpendicular to the conveying direction a are formed (Example 6), and the distance between the aluminum sheet W and the insulating plate 3 is set to 0 mm. Electrolytic roughening of web W. In Example 5, the diameter of the through hole 34 was set to 5 mm, and the pitch in the direction parallel to and perpendicular to the conveyance direction a was set to 5 mm. In addition, in Example 6, the width of the groove 35 was set to 3 mm, and the pitch was set to 50 mm. The results...

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Abstract

The present invention relates to an electrolytic treatment device and an electrolytic treatment method, wherein the electrolytic treatment device implements an electrochemical treatment to a barred body conveyed along a prescribed direction in an electrolyzing solution, includes an electrolyzing tank, storing the electrolyzing solution and conveying the barred body inside; an electrode, arranged above the conveying route along the conveying route of the electrolyzing tank for the barred body and applied by DC or AC; an insulating plate, which specific gravity is less than that of the electrolyzing solution, and arranged along the conveying route and floating below the conveying route.

Description

technical field [0001] The present invention relates to an electrolytic treatment device and an electrolytic treatment method. Background technique [0002] As in the case of electrolytically roughening one side of an aluminum web to produce a support web for lithographic printing plates, in the case of electrochemically treating one side of a metal strip in an electrolyte, it is necessary to suppress The backside creep of the coating is generated due to the winding of the current to the opposite surface. [0003] As a method of suppressing the back surface creeping when the electrolytic treatment is carried out on the strip-shaped body, for example, there is a method in which an electrical insulating plate is placed close to and placed on the surface of the strip-shaped metal plate opposite to the electrode in the region where the electrolytic treatment is performed, and electrolysis is performed. Processing (Japanese Patent Application Laid-Open No. 57-047894). [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25F7/00C25F3/02
Inventor 增田明
Owner FUJIFILM CORP
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