Optimization of Polypropylene Staple Fiber Production Process and Performance improvement!

Polypropylene Staple Fiber, as an important synthetic fiber variety, is widely used in the fields of textiles, nonwoven fabrics, engineering materials, etc. due to its advantages such as light weight, strength and toughness, chemical corrosion resistance and low cost. In the face of increasingly fierce market competition and diverse downstream demands, systematically optimizing its production process and performance has become the key to enhancing the added value of the product.

1. Selection of raw materials and precise regulation of process parameters

Optimization begins at the source. Selecting polypropylene raw materials with a narrow molecular weight distribution and high isotropy is the prerequisite for obtaining high basic strength and stable processing performance. In the spinning and drawing processes, precise control is the key. By optimizing the temperature of the spinning box, the design of components and the side blowing conditions, the uniform structure of the primary fibers can be ensured, and defects such as filament entanglement and hard-headed filaments can be reduced. In the stretching process, the multi-stage hot stretching and relaxation heat setting technology is adopted. By precisely setting the temperature, speed and tension in each zone, it can effectively promote the orientation and crystallization of the macromolecules of the fibers, thereby significantly enhancing the breaking strength of the short fibers, reducing the elongation rate, and improving their crimping stability and hand feel.

Second, functional modification expands the application boundaries

To meet the demands of specific fields, functional modification is the core direction of optimization. Before spinning, through masterbatch blending technology, functional additives such as anti-aging, flame-retardant, antibacterial and hydrophilic can be evenly introduced into the interior of the fibers. For instance, adding highly efficient UV-resistant masterbatches can significantly enhance the weather resistance of outdoor materials. The introduction of hydrophilic additives can improve the hydrophobic property of polypropylene and expand its application in the fields of clothing and hygiene materials. This native modification method endows the fibers with lasting and stable special properties.

Iii. Production Stability and Comprehensive Cost Control

Optimization is also reflected in production efficiency and sustainability. By introducing an automatic control system, key parameters of the production line can be monitored and adjusted in real time to ensure the uniformity between product batches and reduce the rate of waste filaments. Meanwhile, measures such as optimizing the temperature setting of the screw extruder, recycling production waste materials, and adopting highly efficient and energy-saving drawing hot rollers can effectively reduce the comprehensive energy consumption and production costs, which is in line with the development trend of green manufacturing.

Jiangsu Haibang New Materials Co., LTD., formerly known as Taizhou Hailun Chemical Fiber Co., LTD., is a technology-oriented chemical fiber enterprise specializing in the research and development, production and sales of Polypropylene Staple Fibers. The company has two factory areas in Taizhou City, Jiangsu Province, located in the north and south (18 kilometers apart), covering a total area of over 100,000 square meters, with 50,000 square meters of factory buildings and over 10,000 square meters of office buildings. The company has 9 advanced fully automatic polypropylene staple fiber production lines with an annual designed production capacity of 90,000 tons.