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The manufacturing method of agricultural film 

1. Introduction 

Agricultural film is an important plastic product used in agricultural production, mainly playing a role in increasing soil temperature, maintaining soil moisture, and inhibiting weed growth. In the field of chemical raw materials production, the manufacturing of agricultural films involves technologies such as polymer chemistry and plastic processing. This article will provide a detailed introduction to the manufacturing methods of agricultural film

2、 The main raw materials for agricultural film are plastics, commonly used include polyethylene, polypropylene, etc. These materials have excellent weather resistance, aging resistance, mechanical properties, etc., and are suitable for the production of agricultural film

3、 To improve the performance of agricultural films, it is necessary to add some auxiliary materials such as antioxidants, UV absorbers, lubricants, etc. These additives need to be mixed with the main ingredients to ensure their uniform distribution in the agricultural film. The mixing process is generally carried out using an internal mixer or an open mixer

4、 Extrusion molding 

The mixed materials are extruded through an extruder to form the preliminary shape of agricultural film. During the extrusion process, it is necessary to control parameters such as temperature and pressure to ensure the quality and yield of the product

5、 The agricultural film after extrusion molding needs to be stretched and oriented to improve its mechanical and optical properties. Stretching can be achieved through methods such as flat film stretching or tubular stretching, while orientation involves arranging polymer chains along the stretching direction during the stretching process

6、 Cooling and coiling 

The agricultural film that is stretched backwards needs to be cooled and shaped to ensure the stability of its shape and performance. Cooling is generally achieved through methods such as air cooling or water cooling. The cooled agricultural film is rolled up to obtain the final agricultural film product

7、 To ensure the quality of agricultural film, strict quality control and testing are required. Common testing items include thickness, intensity, transmittance, etc. For non-conforming products, rework or scrapping is required

8、 Environmental protection and sustainable development 

The production process of agricultural film generates certain waste and pollutants, so environmental protection treatment is necessary. At the same time, in order to meet the requirements of sustainable development, it is necessary to use environmentally friendly and recyclable raw materials and processes to reduce the impact on the environment

9、 Conclusion: The manufacturing method of agricultural film involves multiple processes and technologies, and it is necessary to strictly control the process parameters and quality indicators of each process to ensure the quality and performance of the final product. At the same time, it is also necessary to pay attention to environmental protection and sustainable development issues, and promote the green and efficient production of agricultural film.