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[Chemical Knowledge]：The production and manufacturing method and process of recycled EPS.

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The manufacturing method
of renewable EPS
1. Introduction

With the expansion of chemical production scale and the increasing shortage of resources, the utilization of renewable resources has gradually become the focus of the industry. As an important raw material for chemical production, the manufacturing method of recycled EPS is of great significance for improving resource utilization, reducing production costs and protecting the environment. This paper will introduce the manufacturing method of recycled EPS in detail, in order to provide reference for the sustainable development of chemical production field.

2. recycled EPS overview

EPS(Expandable Polystyrene) is expandable polystyrene, which is a widely used plastic material. Regeneration of EPS refers to the process of processing waste EPS to make it valuable again. Recycled EPS can not only effectively use waste resources, but also reduce production costs and improve economic efficiency.

3. recycled EPS manufacturing method

1. Waste EPS collection and classification

First of all, need to collect waste EPS, and classification. According to the source and quality of waste EPS, it can be divided into different categories for subsequent processing.

2. Cleaning and drying

The classified waste EPS is cleaned to remove oil and impurities on the surface. After cleaning, drying treatment is carried out for subsequent processing.

3. Crushing and screening

Crushing the dried waste EPS to make it into particles of a certain size. Then, the sieving process is carried out to control the particle size within a certain range for subsequent processing.

4. Extrusion granulation

The sieved EPS particles are added into an extruder, and the recycled EPS particles are formed through heating, melting, extrusion and other processes. During the extrusion process, some additives can be added as needed to improve the performance of recycled EPS.

5. Drying and packaging

The regenerated EPS granules after extrusion and granulation are dried to remove moisture therein. It is then packaged for storage and transport.

4. precautions

1. In the manufacturing process, the temperature, pressure and other parameters of each process should be strictly controlled to ensure product quality.
2. For different sources and quality of waste EPS, should be classified to ensure the quality of renewable EPS stability.
3. In the process of extrusion granulation, appropriate additives should be added as needed to improve the performance of regenerated EPS. At the same time, attention should be paid to the amount and type of additives to avoid harm to the environment and human body.
4. In the process of drying and packaging, attention should be paid to measures such as moisture and sun protection to ensure the quality and service life of the regenerated EPS.

5. conclusion

the manufacturing method of recycled EPS is of great significance for improving resource utilization, reducing production costs and protecting the environment. Through reasonable process design and operation control, regenerated EPS with stable quality and excellent performance can be produced, which provides support for the sustainable development of chemical production field.

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