Suining Tongjia Chemical Fiber Factory Polypropylene High-Strength Filament: A performance-enhanced category among polypropylene fibers!

Polypropylene High-Strength Filament is a performance-enhanced category of polypropylene fibers. Made from high-purity polypropylene as raw material, it significantly improves the fiber's breaking strength and tensile resistance through optimized spinning process and post-treatment technology. Generally, its breaking strength can reach 2 to 3 times that of ordinary polypropylene filament, while retaining the inherent advantages of polypropylene such as light density and chemical corrosion resistance. It holds an important position in fields with high requirements for the mechanical properties of materials and is a key branch for the development of polypropylene fibers towards industrial and functional directions.

From the perspective of production technology, the manufacturing of polypropylene high-strength filament needs to break through the performance bottleneck of conventional spinning. Firstly, polypropylene chips with high melt index and low impurities are selected as raw materials. After high-temperature drying (to remove moisture and prevent spinning bubbles), they are sent into the extruder to melt at 240-280℃. By precisely controlling the screw speed and temperature distribution, the uniformity of the melt is ensured. Subsequently, the melt is precisely controlled by a metering pump in terms of flow rate and transported to a specially designed spinning component. The micro-holes on the spinneret need to match the forming requirements of high-strength filaments. Meanwhile, by increasing the spinning speed (typically up to 3000-4000m/min) and the stretching ratio (5-8 times), the macromolecular chains inside the fibers are highly oriented, forming a compact crystal structure. Significantly increase the fracture strength; Finally, it undergoes high-temperature setting treatment (with the temperature controlled at 120-150℃) to eliminate internal stress in the fibers, enhance dimensional stability, and prevent shrinkage and deformation during subsequent use.

In terms of core performance, the advantages of Polypropylene High-Strength Filament lie in the synergy of "high strength" and "basic characteristics". Firstly, it has outstanding mechanical properties, with high fracture strength and good impact resistance, capable of withstanding considerable tensile force and repeated loads, and is not prone to fracture or deformation. Secondly, with a density of only 0.91g/cm³, it is lighter than water. The products made from it are lightweight, easy to transport and install, and are especially suitable for scenarios where weight is a sensitive issue. Thirdly, it has excellent chemical stability, good resistance to acid, alkali, salt solutions and most organic solvents, and is not prone to corrosion or degradation, making it suitable for complex working conditions. Fourth, it has extremely low hygroscopicity (with a moisture regain rate of approximately 0.03%), is not prone to mold in a humid environment, and will not increase in weight or decline in performance due to water absorption.

In terms of application scenarios, Polypropylene High-Strength Filament covers a wide range of industrial and functional requirements. In the field of industrial textiles, it can be used to make geotextiles, waterproof membrane reinforcing layers, and support the stability of engineering structures with high strength. In the field of rope nets, it is suitable for making hoisting ropes, safety nets and fishing nets. Relying on its high strength and weather resistance, it ensures the safety of use. In the field of filtration, it can be used as a base material for high-strength filtration materials, taking into account both filtration accuracy and structural strength. In the packaging field, it can be used to make high-strength packing straps, ensuring the stability of goods transportation with its tensile strength.

With the improvement of the industry's requirements for material performance, polypropylene high-strength filament is also continuously undergoing technological optimization. By adjusting the spinning process parameters, the strength and toughness can be further enhanced. Modified varieties (such as those resistant to ultraviolet rays and aging) can be developed to expand outdoor application scenarios. At the same time, the composite use with other materials can be explored to form more comprehensive composite materials, providing more reliable fiber solutions for industrial upgrading.

Suining Tongjia Chemical Fiber Factory mainly deals in high-strength polypropylene filament, polypropylene twisted filament, polypropylene industrial filament and high-strength polypropylene thread of various colors ranging from 300D to 5000D. The product features high strength, light weight, low thermal shrinkage, flame retardancy, anti-aging, and low thermal conductivity. It is widely used in various industrial fabrics, cables, bulk bags, anti-cracking engineering fibers and other products.