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[Chemical Knowledge]：Production and manufacturing method and process flow of PP (wire drawing)

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of the manufacturing method
of PP (drawing) PP (polypropylene) is a widely used raw material for the production of chemical products, with excellent physical and chemical properties, such as chemical corrosion resistance, heat resistance, good electrical insulation and so on. Among the many applications of PP, wire drawing is a common processing method, which can prepare various shapes of filamentous products, which are widely used in textile, plastic processing, construction and other fields. The following is a manufacturing method of PP (wire drawing) in the field of chemical production raw materials.

1. raw material preparation

1. polypropylene resin: choose high molecular weight, low melt polypropylene resin as raw material, is conducive to improve the strength and toughness of wire drawing.
2. Additives: According to needs, you can add some additives, such as antioxidants, anti-ultraviolet agents, color agents, etc.

2. Ingredients Mixing

Polypropylene resin and additives are added to a high-speed mixer according to a certain proportion, and sufficient stirring and mixing are carried out to ensure the uniform distribution of raw materials.

3. Melt Extrusion

The mixed raw materials are added to a single-screw or twin-screw extruder, and the raw materials are melted and plasticized by heating and rotation of the screw. In the extrusion process, it is necessary to control the appropriate temperature, pressure and screw speed to ensure the effect and output of melt plasticization.

4. drawing molding

molten PP resin through the die of the extruder to form a filamentous, through the cooling water tank cooling shaping, and then traction stretching, forming a certain diameter and length of the filamentous products. In the wire drawing process, it is necessary to control the appropriate traction speed and cooling water temperature to ensure the quality and output of the wire.

5. Winding Packaging

Winding the drawn filamentous product on a reel and packaging to obtain the final PP (drawing) product.

The above is the basic manufacturing method of PP (wire drawing). The specific production process needs to be adjusted and optimized according to product requirements and equipment conditions. At the same time, in order to ensure product quality and output, it is also necessary to strengthen the monitoring and management of the production process to ensure the stability and reliability of each process link.

In short, the manufacturing method of PP (wire drawing) involves multiple process links and parameter control, which requires production personnel to have rich experience and skills. Only by mastering the correct manufacturing methods and operating skills can we produce high-quality PP (wire drawing) products to meet the application needs of different fields.

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