A method for improving the surface wetting tension of aluminum foil by multi-stage corona treatment

A corona treatment and wetting tension technology, applied in metal rolling, manufacturing tools, metal processing equipment, etc., can solve the problems of ink deinking, affecting the performance of finished products, and high energy consumption, and achieve the effect of improving surface wetting tension

Active Publication Date: 2018-08-24
JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the aluminum foil delivered in a hard state, it is directly used for printing and compounding. If the wetting tension on the surface of the aluminum foil is not up to the standard, it will affect the adhesion of the protective agent and the adhesive, and the phenomenon of ink deinking will occur; at the same time, the surface of the aluminum foil The wetting tension will also affect the composite strength of aluminum foil and plastics and paper. In actual production, the method of low-temperature degreasing and annealing is usually used to increase the wetting tension of the aluminum foil surface. However, this method has long process time and high energy consumption, which will affect The performance of the finished product and other shortcomings, the present invention adopts multi-stage corona treatment at the same time of slitting, which has the advantages of saving time, simple process, and no influence on the mechanical properties of the finished aluminum foil, and has important practical value in the production of aluminum foil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The manufacturing method of improving the surface wetting tension of aluminum foil by multi-stage corona treatment is carried out according to the following process steps:

[0015] (1) Melting, casting and cold rolling: Si: 0.57%, Fe: 0.77%, Cu: 0.03%, Mn: 0.03%, Mg: 0.005%, Zn: 0.01%, Ti: 0.03%, Al: 98.56%. After weighing the raw materials with the remaining impurities, they are smelted, cast and rolled into billets, and the thickness of the billets is 6.93mm. During the smelting process, the rotary blowing method is used for online degassing to ensure that the hydrogen content in the melt is below 0.12mL / kg; the melt is purified by 30 PPi+40 PPi two-stage plate filtration, and stirred by electromagnetic stirring technology More than 3 times to ensure uniform composition; Argon inert gas is used as the refining medium, and the refining time exceeds 30 minutes. The temperature of the whole smelting process must be controlled below 770°C, and the temperature of the gui...

Embodiment 2

[0020] The manufacturing method of improving the surface wetting tension of aluminum foil by multi-stage corona treatment is carried out according to the following process steps:

[0021] (1) Melting, casting and cold rolling: Si: 0.62%, Fe: 0.80%, Cu: 0.038%, Mn: 0.0069%, Mg: <0.003%, Zn: 0.0067% according to the mass percentage of chemical composition , Ti: 0.023%, Al: 98.47%. After weighing the raw materials with the remaining impurities, they are smelted, cast and rolled into billets, and the thickness of the billets is 7.2mm. During the smelting process, the rotary blowing method is used for online degassing to ensure that the hydrogen content in the melt is below 0.12mL / kg; the melt is purified by 30 PPi+40 PPi two-stage plate filtration, and stirred by electromagnetic stirring technology More than 3 times to ensure uniform composition; Argon inert gas is used as the refining medium, and the refining time exceeds 30 minutes. The temperature of the whole smelting proces...

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Abstract

The invention relates to the technical field of aluminum foil production and processing, in particular to a method for improving the surface wetting tension of aluminum foil through multi-stage corona treatment. Due to the advantages of being nontoxic, lightproof, heatproof, dampproof, airproof, attractive and the like, aluminum foil is widely applied to the packaging field, the electronic field, the building field and the like. Delivered hard-state aluminum foil is directly used for printing and combination, if the surface wetting tension of aluminum foil is not up to the standard, the adhesive force of a protecting agent and a bonding agent is affected, and stripping of ink occurs. Meanwhile, the surface wetting tension of aluminum foil also influences the combination strength between aluminum foil and plastic as well as between aluminum foil and paper, in actual production, the surface wetting tension of aluminum foil is improved generally through a low-temperature deoiling and annealing method, however, the method has the defects that the process time is long, energy consumption is high, and the performance of finished products may be affected. According to the method, multi-stage corona treatment is adopted while splitting is carried out, the method has the advantages of saving time, being simple in process, having no influence on the mechanical performance of finished aluminum foil, and the method has significant practical value in production of the aluminum foil.

Description

technical field [0001] The invention relates to the technical field of production and processing of aluminum foil, in particular to a method for increasing the surface wetting tension of aluminum foil by adopting multi-stage corona treatment. Background technique [0002] Aluminum foil is widely used in packaging, electronics, construction and other fields due to its advantages of non-toxicity, shading, heat insulation, moisture resistance, gas barrier, and aesthetics. Usually when users use aluminum foil, they compound it with paper and plastic, which further broadens the application market of aluminum foil. For the aluminum foil delivered in a hard state, it is directly used for printing and compounding. If the wetting tension on the surface of the aluminum foil is not up to the standard, it will affect the adhesion of the protective agent and the adhesive, and the phenomenon of ink deinking will occur; at the same time, the surface of the aluminum foil The wetting tensio...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B21B1/40B21B15/00
CPCB21B1/40B21B15/00B21B15/0007
Inventor万宝伟董则防谢捷灵王超新陆佳
OwnerJIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD