The production process of polypropylene staple fiber seems simple and convenient, but the actual operation is slightly careless, which has a greater impact on its production products, such as the problem of excessive elongation of polypropylene staple fiber, excessive elongation of polypropylene staple fiber will bring a lot of harm, and blending will also affect the strength of yarn, so, the following to understand what categories of polypropylene staple fiber can be divided into!

Polypropylene staple fiber looks like cotton ball from the outside, soft and elastic, polypropylene staple fiber elongation performance is large, production control is not good, elongation of 60%. In addition to the structural elements of the polypropylene polymer itself, there is also the possibility of insufficient stretching during the production process. Due to the large non-uniformity of the yarn, it is easy to finish the winding when increasing the tensile ratio, and sometimes it will drag the foot and then withdraw the winding. In the production, it was found that the yarn shrinkage between the second and the third drawing machine during parking made the three five-roll reversals, and the internal stress of the fibers after orientation was large and there was shrinkage, which could be improved by tension heat setting or appropriate heat treatment.

Polypropylene staple fiber according to natural fiber specifications can be divided into cotton type, wool type, carpet type and medium long type of short fiber. They can be spun either pure or blended with different proportions of natural fibers and other fibers into yarn strips, fabrics, and felt. For example, the general grade of asphalt carbon fiber is mixed in a ratio of 8:2 to carbon fiber with a length of 150mm, a diameter of 15m, a strength of 800MPa, and a modulus of 41GPa, and the reinforcement of composite materials such as cement and magnesium aluminum alloy uses fabrics and short fibers woven into various shapes.

The above is the polypropylene short fiber can be divided into what categories, if you need to know more, you can feel free to contact us!

Taizhou Hailun Chemical Fiber Co., Ltd. has developed a large number of polypropylene short fiber varieties in recent years, including high-speed iron foundation high strength high modulus polypropylene, lightweight GMT hot melt polypropylene, automotive structural parts strengthened polypropylene, liquid filtration adsorption polypropylene, wear-resistant high strength polypropylene, low odor low VOC polypropylene, dyeable polypropylene, halogen-free flame retardant polypropylene and other fiber products with the industry frontier. It replaces many import needs. We have successfully served polypropylene staple fiber products in high-end industries such as high-speed railway, Three Gorges Dam, all kinds of medium and high-end automobiles, direct drinking water, etc., and the product quality has reached a high level, saving a lot of investment for national projects. The company will continue to provide our customers with high-quality polypropylene staple fiber products and high-quality services, in-depth research and development in the polypropylene staple fiber industry, develop high-performance fiber products, and serve the new material industry.