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Method for recycling waste agricultural plastic films

A technology for plastic film and waste plastic, which is applied in the field of waste agricultural plastic film recycling and can solve problems such as polluting the environment, affecting the absorption of water and fertilizer, and adverse effects.

Inactive Publication Date: 2014-04-02
李小丹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of plastic film remaining in farmland will accumulate in the soil over time to form a barrier layer, which will affect the absorption of water and fertilizer by crop roots, resulting in reduced yield and adverse effects
Even if the used agricultural film has been picked up and cleaned, because there is no better treatment method, or it is piled up in the fields and on both sides of the river, no one manages it, causing landscape pollution with the wind; or it is washed away with the rain. Rivers and water bodies pollute the environment; or incineration on the spot will cause serious secondary pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: a kind of recycling method of waste agricultural plastic film, its steps are as follows:

[0020] (1) Sorting of waste plastic film; on the basis of manual sorting, magnetic separation, wind sorting and electrostatic sorting are used to sort waste plastic film;

[0021] (2) Clean and dry the waste plastic film; use manual cleaning to clean the sediment and other garbage on the waste plastic film, and then dry it; the waste plastic film that has been in serious contact with pesticides should be washed with lime water first to neutralize and detoxify , then rinsed in cold water and dried in the sun;

[0022] (3) The waste plastic film is melted and dried; the waste plastic film obtained in step (2) is manually fed into the cutting compactor, and the waste plastic film is chopped, mixed, heated, dried and compacted in the cutting compactor Then enter the screw extruder tangentially along the screw and be melted and kneaded by the screw to form a melt. The mo...

Embodiment 2

[0025] Embodiment 2: a kind of recycling method of waste agricultural plastic film, its steps are as follows:

[0026] (1) Sorting of waste plastic film; on the basis of manual sorting, magnetic separation, wind sorting and electrostatic sorting are used to sort waste plastic film;

[0027] (2) Clean and dry the waste plastic film; use a mechanical automatic cleaning device to clean the sediment and other garbage on the waste plastic film, and then dry it; the waste plastic film that has been in serious contact with pesticides should be washed with lime water first to neutralize and remove poison, then rinse with cold water and dry in the sun;

[0028] (3) The waste plastic film is melted and dried; the waste plastic film obtained in step (2) is fed into the cutting and compacting machine by a feeder, and the waste plastic film is chopped, mixed, heated and dried in the cutting and compacting machine and compaction, then enter the screw extruder tangentially along the screw a...

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PUM

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Abstract

The invention discloses a method for recycling waste agricultural plastic films. The method comprises the following steps: sorting waste plastic films, cleaning and drying the waste plastic films, fusing and drying the waste plastic films, granulating, and drying to finish recycling of the waste plastic films. The waste agricultural plastic films are taken as resources, the recycling production technology is improved and perfected, the industrial policy of regenerative cycle of national resources is met, the recycling of the waste plastic films is promoted, and the method has a certain demonstration to industrial development and meets the urgent demands on treatment of white pollution.

Description

technical field [0001] The invention relates to the field of plastic film recycling, in particular to a method for recycling waste agricultural plastic films. Background technique [0002] Plastic film is discarded at will by people in rural areas and suburban areas of our country and its potential harm to the environment has become an environmental issue of concern to our society. A large amount of plastic film remaining in farmland will accumulate in the soil over time to form a barrier layer, which will affect the absorption of water and fertilizer by crop roots, resulting in reduced production and adverse effects. Even if the used agricultural film has been picked up and cleaned, because there is no better treatment method, or it is piled up in the fields and on both sides of the river, no one manages it, causing landscape pollution with the wind; or it is washed away with the rain. Rivers and water bodies pollute the environment; or incineration on the spot will cause ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B17/00
CPCY02W30/62
Inventor 李小丹
Owner 李小丹
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