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New method for recycling polyethylene product

A technology of polyethylene and a new method, applied in the field of waste plastic recycling, can solve the problems of irregular operation and unstable performance parameters of polyethylene materials.

Inactive Publication Date: 2015-03-25
贵州枫叶管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing methods for recycling waste polyethylene products are not standardized, and the performance parameters of recycled polyethylene materials are unstable.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] (1) Break the collected polyethylene products into pieces, and then put the broken polyethylene into the pool for cleaning. The pool is equipped with a water friction extrusion washing machine for cleaning, and the material is fed to the washing pool by a rolling motor. Further rinse and clean the impurities and impure PE flakes on the debris, and set a rolling motor every 3 meters in the washing pool;

[0016] (2) Dry the washed polyethylene fragments with a dryer, or directly dry them in the sun when the weather is fine;

[0017] (3) Use a special extruder to produce pellets from dry polyethylene fragments, set the temperature of the feeding port to 170-190°C, set the temperature of the middle extruder to 220°C, and set the temperature of the die to 210°C. Filter with 80-mesh filter;

[0018] (4) Cut into pellets in cold water, spread out and leave for 50 minutes, then bag and seal.

[0019] Choose HDPE flakes that have been crushed and need to be cleaned again a...

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Abstract

The invention discloses a new method for recycling a polyethylene product. The new method comprises the following operation steps: crushing polyethylene, and then placing polyethylene into a water pool, wherein a water friction extrusion flushing machine is arranged in the water pool; driving a material to enter into a material cleaning pool by using rolling motors, and further flushing and cleaning a fragment, wherein one rolling motor is arranged in the material cleaning pool at an interval of 3 meters; spin-drying the cleaned polyethylene fragment, or directly drying in the sun on a sunny day; granulating the dried polyethylene fragment by using a special extruder, setting the temperature of a feed opening to be lower than 170-190 DEG C, medium extruder temperature to be 210-230 DEG C and mould orifice temperature to be 210 DEG C, and filtering by using a 80-mesh filter screen; dicing in cold water, then spreading, standing for 30-50 minutes, and then bagging and sealing. A polyethylene granule produced by adopting the new method disclosed by the invention is low in impurity content and proper in process parameter and can be granulated again without the addition of new materials, such as an antioxidant, a compatilizer and an elastomer.

Description

technical field [0001] The invention relates to a method for recycling waste plastics, in particular to a new method for recycling polyethylene products. Background technique [0002] With the rapid development of the plastics industry, polyethylene, as a general-purpose plastic, is widely used in daily necessities, construction, automobile manufacturing and other fields. Especially in the field of pipes, due to the characteristics of good flexibility, corrosion resistance, and easy construction and installation, polyethylene pipes are widely used in municipal and building water supply and drainage, gas, heating, wire and cable threading, agricultural water-saving irrigation and industrial sewage. , Mine mineral transportation and other fields. At present, PE pipe has become the second largest plastic pipe variety in the world after PVC. However, with the expansion of polyethylene application fields and the increase in usage, waste polyethylene is also increasing day by...

Claims

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Application Information

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IPC IPC(8): B29B9/06B29C47/92B29C48/92
CPCB29B17/00B29B9/06B29B2017/0015
Inventor 徐建良王新路余雪云马立云
Owner 贵州枫叶管业有限公司
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