B2B Internet for Chemical products

BOPP (biaxially oriented polypropylene) film is an important raw material for chemical production, with excellent physical properties, chemical stability, and processing performance. It is widely used in packaging, printing, electronics, agriculture, and other fields. This article will provide a detailed introduction to the manufacturing method of BOPP

1、 The main raw material for BOPP production is polypropylene resin, which requires high molecular weight, narrow molecular weight distribution, and good processing performance. In addition, it is necessary to add some additives such as antioxidants, anti-static agents, and smoothing agents to improve the performance of the film

2、 Mixing ingredients: Add polypropylene resin and additives in a certain proportion to the high-speed mixer, stir and mix thoroughly to ensure uniform distribution of raw materials

3、 Extrusion casting 

Melt and extrude the mixed raw materials through an extruder to form a certain thickness of sheet material. During the extrusion process, temperature, pressure, and extrusion speed need to be controlled to ensure the quality and thickness uniformity of the sheet

4、 Biaxial stretching 

involves stretching the extruded sheet in both longitudinal and transverse directions to increase the strength and toughness of the film. The stretching process needs to be carried out at a certain temperature and tension to ensure the quality and performance of the film

5、 Heat treatment is required for the stretched film to eliminate internal stress and improve the dimensional stability of the film. During the heat treatment process, temperature and time need to be controlled to avoid deformation or aging of the film

6、 Wrapping and slitting: After heat treatment, the film is wound and slitted to obtain BOPP film products with a certain width and length

In summary, the manufacturing method of BOPP requires multiple steps, including raw material preparation, ingredient mixing, extrusion casting, biaxial stretching, heat treatment, and winding and slitting. Each step requires strict control of process parameters to ensure the quality and performance of the film. At the same time, attention should also be paid to safety and environmental protection issues during the production process to avoid harm to the environment and personnel

In the actual production process, it is also necessary to optimize and adjust the process according to specific product requirements and market demand, in order to improve production efficiency, reduce costs, improve product quality and competitiveness. In addition, with the continuous progress and application of technology, the manufacturing methods of BOPP are also constantly improving and innovating, injecting new impetus into the development of the industry

In summary, as an important raw material for chemical production, BOPP's manufacturing method requires control and adjustment through multiple stages and process steps to ensure product quality and performance. At the same time, it is also necessary to pay attention to safety and environmental protection issues in the production process, and promote the sustainable development of the industry.