Polypropylene high strength yarn spinning technology is a systematic process. It uses polypropylene as the core raw material and achieves the enhancement of fiber strength and toughness through multiple precise procedures. It is widely applied in industrial textiles, composite materials and other fields. The core process mainly consists of four key steps: raw material pretreatment, melt spinning, stretching and setting, and winding and forming. The coordinated cooperation of each step directly determines the quality of the product.
In terms of raw materials, the melt index directly reflects the molecular weight of polypropylene. The higher the molecular weight, the greater the degree of molecular chain entanglement, and the higher the strength of the fibers after stretching. Generally, raw materials with a melt index ranging from 5 to 40 are selected. In the drawing process, the drawing ratio and speed need to be reasonably matched. An excessively high drawing ratio will increase the brittleness of the fibers, while an excessively low ratio will not be able to fully enhance the strength. Usually, it is controlled within the range of 6 to 8 times.
With the increasing demands for the performance of polypropylene high strength yarns in the industrial sector, the drawing technology is undergoing optimization and upgrading towards higher efficiency, greater precision, and more functionality. Through process innovation and equipment improvement, the product performance is further enhanced, application scenarios are expanded, and production energy consumption is reduced.
In terms of process innovation, the one-step spinning and two-step spinning technologies have been continuously optimized. The one-step spinning integrates processes such as polymerization and spinning, reducing the number of process steps and lowering labor costs; the two-step spinning improves the drafting and twisting processes to enhance the strength and uniformity of the products. The raw material formula is also continuously innovated, adding auxiliaries such as chitin and nano-silica, which can enhance the antioxidant and strength properties of the fibers.
Guangdong Qingyuan Yitong Weaving Co., Ltd. specializes in the production and sales of pp yarn, polypropylene high strength yarn, polypropylene light body yarn, polypropylene high strength yarn, 300D polypropylene polypropylene yarn, polypropylene network yarn, polypropylene twist yarn, 300D polypropylene high strength yarn, 1200D polypropylene high strength yarn, anti-aging polypropylene yarn, anti-static polypropylene yarn, Yitong polypropylene twist yarn, etc.
Qingyuan Yitong weaving Co., LTD
Website: http://www.womeiqian.net
Domestic business: He Shanbin
Tel: 0763-6812222
Fax: 0763-6813888
Mobile: 133 5289 9993
Foreign business: Landy
Tel: 0763-6813199
Mobile: 135 5399 2535
