With the advancement of modern science and technology, the field of industrial textiles has been continuously expanding. Its consumption has also been increasing, and synthetic fiber has been replaced by synthetic fiber instead of synthetic fibres used in ordinary industries. development trend. Compared with other synthetic fibers, polypropylene high-strength filaments not only have excellent mechanical properties and chemical stability, but also have low equipment investment, low raw material costs, and minimal energy consumption, and have obvious technical and economic advantages. At present, polypropylene high-strength filaments are hot spots at home and abroad.