PP (Drawing) Manufacturing Method
PP (Polypropylene) is a widely used raw material for chemical production, with excellent physical and chemical properties, such as chemical resistance, heat resistance, and good electrical insulation. Among the many applications of PP, drawing is a common processing method to prepare filamentary products of various shapes, which are widely used in textiles, plastics processing, construction, and other fields. The following is the manufacturing method of PP (drawn wire) in the field of raw materials for chemical production.
I. Raw material preparation
1. Polypropylene resin: choose high molecular weight, low melting index of polypropylene resin as raw material, which is conducive to improving the strength and toughness of wire drawing.
2. Additives: According to the need, some additives can be added, such as antioxidant, anti-ultraviolet agent, color agent and so on.
II. Ingredient mixing
Add the polypropylene resin and additives to the high-speed mixer according to a certain proportion, and carry out sufficient stirring and mixing to ensure that the raw materials are evenly distributed.
Third, melt extrusion
Add the mixed raw materials to the single-screw or twin-screw extruder, and melt and plasticize the raw materials through heating and the rotating action of the screw. In the extrusion process, it is necessary to control the appropriate temperature, pressure and screw speed to ensure the effect of melt plasticizing and yield.
Four, wire drawing molding
Molten PP resin through the extruder die to form silk, after cooling water tank cooling and shaping, and then hauling and stretching, to form a certain diameter and length of the silk products. In the process of drawing, it is necessary to control the appropriate traction speed and cooling water temperature to ensure the quality and yield of silk. V. Winding and Packing
The drawn filament products will be wound on the reel and packaged to get the final PP (drawing) products.
The above is the basic manufacturing method of PP (drawing), the specific production process needs to be adjusted and optimized according to the product requirements and equipment. At the same time, in order to ensure the quality and yield of the product, 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 conclusion, the manufacturing method of PP (wire drawing) involves several process links and parameter control, and requires the production staff to have rich experience and skills. Only by mastering the correct manufacturing methods and operating techniques can we produce high-quality PP (drawing) products to meet the needs of different areas of application.
