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Method for separating aluminium foil and plastic film from waste aluminium film

A technology of plastic film and aluminum film, applied in the field of environmental pollution control and waste utilization, to achieve the effects of avoiding environmental pollution, solving garbage pollution, and being easy to popularize and apply

Inactive Publication Date: 2004-12-15
徐兆平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The beneficial effects of the present invention are: 1. Because the raw materials used in the present invention are discarded packaging aluminum films such as medicines or soft drinks, and the finished products are aluminum foils and plastic films, environmental pollution and harm to the human body caused by burning waste aluminum films are avoided, Also obtained valuable aluminum foil and plastic film, which can be used to produce high-performance aluminum powder for the manufacture of explosives and paints, and plastic film can be used to regenerate plastic particles and make various plastic products. It is known that there are discarded medical products every year in the country If the packaging aluminum film is more than 10,000 tons, if it can be separated into aluminum foil and plastic film by the method of the present invention, more than 76 million yuan of profits and taxes can be created every year, and more than 6,000 job opportunities can be created. Garbage pollution problems can also achieve good economic and social benefits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] Embodiment 1: first the discarded aluminum film that collects is removed impurity and is cleaned, then by tetrahydrofuran: tetrahydrofuran: glacial acetic acid=2: 2: 6 ratio is formulated as solvent, then the waste that removes impurity and is washed Put the aluminum film and the prepared solvent into the reaction kettle, soak for 5 to 8 hours, heat to 60°C and keep at 60°C for 20 hours, then remove the waste aluminum film soaked in high temperature and put it in the cold water pool Soaking, and finally manually sorting out the automatically separated aluminum foil and plastic film products.

Embodiment 2

[0007] Embodiment 2: the discarded aluminum film that collects is removed impurity and washes for use earlier, then by tetrahydrofuran: tetrahydrofuran: glacial acetic acid=2.5:3.5:4 The ratio is formulated as solvent, then the impurity-removed and washed Put the waste aluminum film and the prepared solvent into the reaction kettle, soak for 5-8 hours, then heat to 60°C and keep it at 60°C for 24 hours, then remove the waste aluminum film soaked in high temperature and put it in a cold water pool for soaking. Finally, manually sort out the finished products of aluminum foil and plastic film that are automatically separated.

Embodiment 3

[0008] Example 3: first remove impurities and wash the collected waste aluminum film for use, then prepare a solvent according to the ratio of tetrahydrofuran: tetrahydrofuran: glacial acetic acid = 2: 3: 5, and then remove impurities and wash Put the discarded aluminum film and the prepared solvent into the reaction kettle, soak in cold for 5-8 hours, then heat to 60°C, keep it for 22 hours, take it out and put it into the cold water pool for soaking, and finally divide it manually from the cold water pool Pick up automatically separated aluminum foil and plastic products.

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Abstract

The present invention relates to environment protection and waste utilization. The process of separating aluminum foil and plastic film from waste aluminum film includes soaking in coldw ater, soaking in solvent compounded with tetralin, tetrahydrofuran and glacial acetic acid in normal and high temperature for long period, and separating in cold water automatically. The said method is superior to available incineration and landfill method and can produce certain economic utility while preventing environmental pollution.

Description

1. Technical field: [0001] The invention relates to a method for controlling environmental pollution and waste utilization, in particular to a method for separating foil and plastic film from discarded aluminum film. 2. Background technology: [0002] At present, most of the packaging of tablets and soft drinks produced by large pharmaceutical factories at home and abroad are packaged with aluminum film, and then sold in cartons. When pharmaceutical companies package tablets and soft drink manufacturers pack soft drinks, there are a lot of scraps. In the past, these wastes were treated as industrial waste by incineration or landfill, which not only wastes precious aluminum and plastic resources, but also wastes It will also produce a large amount of toxic gas, pollute the air, and damage people's health; landfill these garbage, because the plastic and aluminum film are not easy to rot, it will take up arable land and pollute water sources; Finally, the aluminum film of pack...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/28
CPCY02W30/62
Inventor 徐兆平
Owner 徐兆平
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