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With the rapid development of the plastic industry, polyethylene (PE) has become a widely used raw material for chemical production. However, discarded PE products have caused serious pollution to the environment. Therefore, studying the manufacturing methods of recycled PE has important practical significance. This article will provide a detailed introduction to the manufacturing method of recycled PE, aiming to provide an environmentally friendly, economical, and efficient production method

2、 The raw materials for recycled PE mainly come from waste PE products, such as plastic bags, packaging films, containers, etc. These waste products can be used as raw materials for regenerated PE after being classified, cleaned, crushed and other pre-treatment

3、 The manufacturing steps of regenerated PE 

1 Pre processing: Classify the collected waste PE products and remove impurities such as metals and paper. Then, clean the waste PE products with clean water to remove surface oil and dust. Finally, crush the cleaned waste PE products into small pieces for convenient subsequent processing

2. Melting granulation 

Add the preprocessed waste PE fragments into the extruder, and melt the waste PE fragments through heating and screw extrusion. Then, the melted PE is extruded into strips through a mold, cooled by water, and cut into a certain length of granular shape. This process can convert waste PE fragments into reusable PE particles

3. Screening and Packaging 

Screen the PE particles after granulation to remove impurities and unqualified particles. Then, package the screened regenerated PE particles for storage and transportation

4、 Manufacturing precautions for recycled PE 

1 Control temperature 

In the process of melting and granulation, it is necessary to control the appropriate temperature to ensure that the waste PE fragments can be fully melted, while avoiding the degradation of PE at high temperatures

2. Regular maintenance is required for equipment such as extruders to ensure their normal operation and product quality

3. Comply with environmental requirements 

In the production process, it is necessary to comply with environmental requirements and treat the generated waste gas, wastewater, etc. to reduce the impact on the environment

5、 The application fields of recycled PE can be widely applied in various fields, such as plastic bags, packaging films, pipes, profiles, etc. Compared with native PE, recycled PE has a price advantage and can improve resource utilization and reduce environmental pollution. Therefore, recycled PE has broad application prospects in the field of chemical production raw materials

6、 Conclusion: The manufacturing method of recycled PE is of great significance for improving resource utilization, reducing environmental pollution, and reducing production costs. In the actual production process, it is necessary to optimize based on factors such as the source and quality of raw materials, equipment performance, etc., in order to improve the quality and yield of recycled PE. Meanwhile, strengthening the research and application of recycled PE can help improve the sustainable development level of the plastic industry.