What excellent properties does polypropylene staple fiber have?

Release date: [2025/6/9] Read total of [4] times

Compared with polyamide fibers, polyester fibers, and viscose fibers, polypropylene staple fibers have their own advantages and characteristics. Polypropylene staple fibers are made from polypropylene resin as the main raw material through processes such as melt spinning, drawing, crimping, drying, shaping, cutting, and packaging, resulting in colored and colorless fluffy fibers with specified denier and length.

So, what excellent properties does polypropylene staple fiber have? It is lightweight, with a density of 0.9 to 0.92 grams per cubic centimeter. Among all synthetic fibers, it is relatively light. It is 20% lighter than polyamide fibers, 30% lighter than polyester fibers, and 40% lighter than viscose fibers. High strength (the same in dry and wet states), good wear resistance and resilience; Antimicrobial, mold-proof and moth-proof; Its chemical resistance is also superior to that of common synthetic fibers. In addition, compared with other synthetic fibers, polypropylene fibers have better electrical insulation and thermal insulation properties. They have a very high resistivity (7×10 ^ 19 ohms · cm) and a very low thermal conductivity.


However, the melting point of polypropylene staple fibers is low (165 ~ 173℃), and they have poor stability to light and heat. Therefore, the heat resistance and aging resistance of polypropylene staple fibers are poor. Usually, heat stabilizers and anti-aging agents are added to improve their performance. Its hygroscopicity and dyeability are relatively poor among synthetic fibers, with a moisture regain rate of less than 0.03%. Ordinary dyes cannot color it. Therefore, during spinning, a certain amount of coloring masterbatch is often added to the raw material polypropylene to color the fibers.


Hubei Botao Synthetic Fiber Co., Ltd. was established in November 2002 and is located in Jingmen High-tech Industrial Development Zone, covering an area of 300,000 square meters. It has 5 subsidiaries. Our company is a manufacturing enterprise specializing in the production and sales of polypropylene, polyester, composite fibers, polyethylene fibers, polylactic acid staple fibers and various non-woven fabrics. Our main products are widely used in automotive interiors, geotextiles, carpets, filtration, hygiene, spinning and other industries. By 2024, the company's production capacity of polypropylene staple fibers will be over 150,000 tons, and that of polyester staple fibers will be 20,000 tons. After more than 20 years of unremitting efforts in the field of polypropylene fiber manufacturing, it has ranked among the top three in terms of sales revenue and market share for five consecutive years, and is currently one of the top three suppliers in terms of polypropylene staple fiber production capacity. On December 25, 2024, the company received the consent letter for listing from the National Equities Exchange and Quotations Company.