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Aluminum foil for cover plate and processing method for aluminum foil

A processing method and technology of aluminum foil, which is applied in the field of cover plates for drilling and processing PCB backplanes, can solve problems such as low wetting tension, achieve high surface wetting tension, and facilitate bonding

Inactive Publication Date: 2016-03-30
烟台柳鑫新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide an aluminum foil for a cover plate and a treatment method thereof, aiming at solving the problem of low surface wetting tension of the existing aluminum foil for a cover plate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The surface of the aluminum foil was cleaned with 1‰sulfonic acid at a temperature of 30°C for 50 seconds, and the cleaned aluminum foil was placed in an oven at a temperature of 180°C for 60 seconds.

[0037] After the above treatment, the surface wetting tension of the aluminum foil changed from 28dyn to 32dyn, and the peel strength increased to 0.3N.

Embodiment 2

[0039] Use a 2‰ NaOH aqueous solution at a temperature of 30°C to clean the surface of the aluminum foil for 50s, place the cleaned aluminum foil in an oven at a temperature of 200°C for 60s, and then use a corona discharge device to perform high-voltage discharge treatment on the aluminum foil after the oven treatment , control the discharge capacity of the corona discharge equipment to 1A and the running speed of the aluminum foil to 2m / min.

[0040] After the above treatment, the surface wetting tension of the aluminum foil is 50 dyn, and the peel strength is 3N.

Embodiment 3

[0042] Using 2‰ Na at a temperature of 40°C 2 S 2 o 8 Clean the surface of aluminum foil with aqueous solution for 50 seconds, put the cleaned aluminum foil in an oven at 200°C for 60 seconds, and then use corona discharge equipment to perform high-voltage discharge treatment on the aluminum foil treated in the oven to control the discharge capacity of the corona discharge equipment The running speed for 2A and aluminum foil is 2m / min.

[0043] After the above treatment, the surface wetting tension of the aluminum foil was 56dyn, and the peel strength was 3.7N.

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PUM

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Abstract

The invention relates to aluminum foil for a cover plate and a processing method for the aluminum foil. The processing method includes the steps that aluminum foil washing liquid at the temperature ranging from 30 DEG C to 50 DEG C is used for washing the surface of the aluminum foil for 50 s to 90 s; the washed aluminum foil is arranged in a drying oven at the temperature ranging from 180 DEG C to 210 DEG C to be processed for 40 s to 100 s; and brush discharge equipment is adopted for conducting high-voltage discharge processing on the aluminum foil processed through the drying oven, the discharge amount of the brush discharge equipment and the aluminum foil running speed are controlled, and therefore the surface wetting tension needed by the aluminum foil is achieved. According to the processing method, oil contamination on the surface of the aluminum foil is initially removed through the chemical method, and residues are reduced; then the high-temperature processing means is adopted for increasing the surface activation energy of the aluminum foil residual content; and finally the high-voltage discharge means is used for changing the microstate and the ingredient polarity of surface substance of the aluminum foil, the surface wetting tension of the aluminum foil is further improved, and bonding between the aluminum foil and other resin is facilitated. In addition, the method is convenient and rapid, and the surface wetting tension of the aluminum foil can be adjusted in a controllable manner.

Description

technical field [0001] The invention relates to the field of a cover plate for drilling a PCB backplane, in particular to an aluminum foil for a cover plate and a processing method thereof. Background technique [0002] The aluminum foil for the cover plate is a thin single-zero aluminum foil, and the aluminum surface has a certain amount of rolling oil, which restricts the surface wetting tension of the aluminum foil and affects the compounding of the aluminum foil and the resin substrate. [0003] Therefore, the prior art still needs to be improved and developed. Contents of the invention [0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide an aluminum foil for a cover plate and a treatment method thereof, aiming at solving the problem of low surface wetting tension of the existing aluminum foil for a cover plate. [0005] Technical scheme of the present invention is as follows: [0006] A method for p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/22C23F17/00
CPCC23G1/22C23F17/00
Inventor 唐甲林刘飞罗小阳张伦强
Owner 烟台柳鑫新材料科技有限公司