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A double-sided surface treatment method for rolled copper foil

A technology of rolling copper foil and surface treatment, which is applied in the field of double-sided surface treatment of rolled copper foil, can solve the problems of lines being corroded by etching solution and weak bonding of protective layer, etc., and achieve saving of processing cost, good oxidation resistance, The effect of high peel strength

Active Publication Date: 2020-10-09
中色正锐(山东)铜业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Now, through use, it is found that the non-treated surface (glossy surface) often has a situation where the protective layer is not firmly bonded, causing the circuit to be corroded by the etching solution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A double-sided surface treatment method of rolled copper foil, which sequentially performs the following treatments on the two long and wide surfaces of the rolled copper foil: electrolytic degreasing, alkaline chemical degreasing, water washing 1, pickling, water washing 2, roughening 1, water washing 3 , curing 1, washing 4, roughening 2, washing 5, curing 2, washing 6, blackening, washing 7, electrogalvanizing, washing 8, electrochrome plating, washing 9, washing 10, coating silane coupling agent, drying;

[0055] Specifically, the following steps are carried out in sequence:

[0056] 1) Electrolytic degreasing: In the electrolytic degreasing process: the concentration of NaOH in the degreasing solution is 33g / L, the temperature of the degreasing solution is 46°C, and the current density is 600A / m 2 ;

[0057] 2) alkaline chemical degreasing, carrying out alkaline chemical degreasing with aqueous sodium hydroxide solution;

[0058] 3) washing 1;

[0059] 4) Pickli...

Embodiment 2

[0087] A double-sided surface treatment method of rolled copper foil, which sequentially performs the following treatments on the two long and wide surfaces of the rolled copper foil: electrolytic degreasing, alkaline chemical degreasing, water washing 1, pickling, water washing 2, roughening 1, water washing 3 , curing 1, washing 4, roughening 2, washing 5, curing 2, washing 6, blackening, washing 7, electrogalvanizing, washing 8, electrochrome plating, washing 9, washing 10, coating silane coupling agent, drying;

[0088] Specifically, the following steps are carried out in sequence:

[0089] 1) Electrolytic degreasing: In the electrolytic degreasing process: the concentration of NaOH in the degreasing solution is 33g / L, the temperature of the degreasing solution is 47°C, and the current density is 600A / m 2 ;

[0090] 2) alkaline chemical degreasing, carrying out alkaline chemical degreasing with aqueous sodium hydroxide solution;

[0091] 3) washing 1;

[0092] 4) Pickling...

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Abstract

The invention provides a double-sided surface treatment method for a rolled copper foil, and two long wide surfaces of the rolled copper foil are sequentially subjected to the following treatments: electrolytic degreasing, alkaline chemical degreasing, washing 1, acid pickling, washing 2, roughening 1, washing 3, curing 1, washing 4, roughening 2, washing 5, curing 2, washing 6, blackening, washing 7, zinc electroplating, washing 8, chromium electroplating, washing 9, washing 10, silicone coupling agent coating and drying. In a corresponding electroplating solution, two long wide surface sidesof the rolled copper foil are equipped with anode plates, and the two long wide surfaces of the rolled copper foil are subjected to roughening 1, curing 1, roughening 2, curing 2, blackening, zinc electroplating and chromium electroplating. Double sides of the rolled copper foil have relatively high peel strength and relatively high roughness, and have good oxidization resistance, so that the double sides of the rolled copper foil can be pressed with PI films, and therefore, the problem that the original light surface and a coating layer cannot be bonded firmly is solved, and a micro-etchingprocess can be saved for downstream production enterprises.

Description

technical field [0001] The invention relates to the technical field of rolled copper foil processing, in particular to a double-sided surface treatment method of rolled copper foil. Background technique [0002] The common rolled copper foils on the market are single-sided blackened or reddish-treated copper foils. The treated surface deposits metal elements such as copper and nickel on the surface to improve the surface roughness and chemical resistance. It is mainly used for PI films. Bonding to form a flexible copper clad laminate with high adhesion and high chemical resistance. The other side of the copper foil is the non-treated surface, which is a smooth surface. When the circuit is etched, the non-treated surface will be coated with a protective layer to isolate the etching solution. [0003] At present, the conventional rolled copper foil is to install the anode plate at a certain distance near one side of the rolled copper foil, and achieve the roughening effect th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25F1/04C23G1/10C25D3/38C25D3/22C25D3/04C25D3/58C25D7/06
CPCC23G1/103C25D3/04C25D3/22C25D3/38C25D3/58C25D7/0614C25F1/04
Inventor 孙庆安姜业欣陈宾田原晨马春红李洪岩程如珍张春阳孙克斌朱月吴俣
Owner 中色正锐(山东)铜业有限公司
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