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Electrolytic regeneration device

A treatment device and electrolytic regeneration technology, which is applied in the secondary treatment of printed circuits, electrolytic process, electrolytic components, etc., can solve the problems of enlarging electrolytic regeneration tanks, large quantities, etc., and achieve the effect of reducing liquid volume

Active Publication Date: 2012-03-21
C UYEMURA & CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, as mentioned above, the method of installing multiple electrodes in the electrolytic regeneration tank needs to increase the capacity of the electrolytic regeneration tank (about 1 to 2 times the capacity of the desmearing treatment tank), so this method must ensure the The installation area of ​​the regeneration tank, and a large amount of treatment liquid must be used

Method used

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no. 1 Embodiment approach

[0024] Such as figure 1 As shown, the electrolytic regeneration treatment device 11 according to the first embodiment of the present invention electrolyzes the treatment solution in order to reuse the treatment solution after the desmear treatment in the process of manufacturing printed circuit boards for the removal of the smear. And the treatment liquid is regenerated. Hereinafter, a case where a solution of a permanganate such as sodium permanganate or potassium permanganate is used as the treatment liquid L will be described as an example. The treatment liquid L is stored in the desmear treatment tank 13 .

[0025] A resin substrate (not shown) constituting the substrate portion of the printed circuit board is immersed in the treatment liquid in the desmear treatment bath 13 to perform desmear treatment. According to this, the smear existing in the through hole or the via hole of the resin substrate is oxidized by the treatment liquid L, thereby removing the smear from t...

no. 2 Embodiment approach

[0061] Next, the electrolytic regeneration treatment device 11 according to the second embodiment of the present invention will be described. Figure 5 It is a schematic diagram showing the regeneration processing unit 19 of the electrolytic regeneration processing device 11 according to the second embodiment. In the electrolytic regeneration treatment device 11 of the second embodiment, the configuration other than the regeneration treatment unit 19 is the same as that of the first embodiment, and thus description thereof will be omitted.

[0062] In this second embodiment, the treatment liquid L flowing through the delivery-side conduit 15 is guided to the upstream end 231 a of the first pipe 231 , the upstream end 232 a of the second pipe 232 , and the upstream of the third pipe 233 . side end portion 233a. In addition, the treatment liquid L flows from the upstream side to the downstream side in the flow path in each pipe 23, and flows from the downstream end portion 231b...

no. 3 Embodiment approach

[0070] Figure 6 It is a schematic diagram showing the regeneration processing unit 19 of the electrolytic regeneration processing device 11 according to the third embodiment of the present invention. Such as Figure 6 As shown, the electrolytic regeneration treatment device 11 of the third embodiment includes a regeneration treatment unit 19 , an upstream side branch pipe 234 , a downstream side branch pipe 235 , and on-off valves 61 and 62 . The regeneration unit 19 includes a first piping unit 191 , a second piping unit 192 , and a third piping unit 193 . Each piping assembly has a Figure 4 The regeneration processing section 19 shown has the same structure. details as follows.

[0071] The first pipe assembly 191 includes three pipes 231 , 232 , and 233 as the cylindrical portion 23 , and a total of three cathodes 25 provided one in each pipe. The three pipes of the first pipe unit 191 are the first upstream pipe 231 , the central first pipe 232 , and the downstream ...

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Abstract

The invention provides an electrolytic regeneration device, wherein, a regeneration unit (19) includes a tubular portion (23) having the inner circumferential surface (31) functioning as an anode, and a cathode (25) provided inside the tubular portion and extending along the extension direction of the tubular portion in a state of separation from the inner circumferential surface. The treatment liquid used for desmearing treatment is fed through a gap between the inner circumferential surface (31) of the tubular portion (23) and the cathode (25). A feed-side conduit (15) is connected by a downstream end portion (15b) thereof to the tubular portion (23) and guides the treatment liquid discharged from a desmearing treatment tank (13) into a regeneration unit (19). A return-side conduit (17) is connected by an upstream end portion (17a) thereof to the tubular portion (23) and guides the treatment liquid discharged from the regeneration unit (19) into the desmearing treatment tank (13). Via the above way, the electrolytic regeneration device is capable of realizing miniaturization and reducing total liquid amount.

Description

technical field [0001] The present invention relates to an electrolytic regeneration treatment device for regenerating the treatment solution by electrolyzing the treatment solution after desmearing treatment, which is carried out in the manufacturing process of manufacturing printed circuit boards and the like. Background technique [0002] When a through hole or via hole is formed on a resin substrate used for a printed circuit board, resin is generated due to frictional heat generated between the drill bit and the resin or fusion heat generated by laser irradiation to the resin The slag is smear. In order to maintain the reliability of the electrical connection of the printed circuit board, it is necessary to remove the smear generated in the through hole or the through hole by chemical treatment or the like (ie, the desmear treatment must be performed). [0003] Generally, in the chemical treatment method, a solution of permanganate such as sodium permanganate or potass...

Claims

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Application Information

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IPC IPC(8): C25B1/00C25B9/00C25B15/00
CPCC25B1/28C25B15/08H05K3/0055B08B3/10H05K3/08H05K3/26
Inventor 西条义司山本久光石嵜隆浩
Owner C UYEMURA & CO LTD
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