Among the large family of synthetic fibers, polypropylene staple fibers have become one of the members that have attracted much attention due to their unique properties and wide applications. Whether in daily life or in the field of industrial production, it has demonstrated irreplaceable value. This article will take you on a deep dive into polypropylene staple fiber and lift its veil of mystery.

I. Basic Concepts of polypropylene staple fibers

Polypropylene staple fiber, also known as polypropylene staple fiber, is a short fiber made from polypropylene as raw material through processes such as melt spinning, drawing and cutting. Polypropylene is a common high-molecular polymer with advantages such as abundant sources and low prices, which gives polypropylene staple fibers certain advantages in production costs.

The appearance of polypropylene staple fibers is white or transparent. The fiber length can be adjusted according to different application requirements, generally ranging from a few millimeters to tens of millimeters. Its cross-section is usually circular, but it can also be made into other shapes through special spinning processes, such as irregular cross-sections, to meet the special requirements for fiber performance in different fields.

Ii. Performance Advantages of Polypropylene staple Fibers

(1) Excellent physical properties

Polypropylene staple fibers have relatively high strength and wear resistance. Its breaking strength is generally between 30 and 60cN/dtex, which is 1.5 to 2 times that of cotton. This enables it to withstand greater tensile and frictional forces in fields such as textile and papermaking, thereby extending the service life of products. Meanwhile, polypropylene staple fibers have a good elastic recovery rate, are not prone to deformation, and the fabrics made from them have good dimensional stability.

(2) Unique chemical properties

Polypropylene staple fibers have excellent chemical stability and strong resistance to acid and alkali corrosion. In common acid and alkali solutions, it does not undergo obvious chemical reactions or performance changes. This characteristic has enabled it to be widely applied in fields such as chemical engineering and environmental protection. For instance, in sewage treatment equipment, the filter material made of polypropylene short fibers can withstand the erosion of acidic and alkaline substances in sewage for a long time and maintain good filtration performance.

(3) Good thermal performance

The melting point of polypropylene staple fiber is relatively low, generally between 160 and 175℃, which makes it have good processability. By heating and melting, polypropylene staple fibers can be easily combined with other materials to produce various composite materials. In addition, polypropylene staple fibers also have good heat resistance. Within a certain temperature range, they can maintain stable performance and are less likely to soften or deform.

(4) Outstanding lightness

The density of polypropylene staple fiber is relatively low, approximately 0.91g/cm, making it one of the lightest varieties among synthetic fibers. This feature gives it a unique advantage in the textile field. Fabrics made of polypropylene staple fibers are light in weight and comfortable to wear, making them suitable for manufacturing sportswear, casual wear, etc. Meanwhile, in the field of packaging materials, lightweight polypropylene staple fiber products can reduce transportation costs and improve transportation efficiency.

Hai'an County Qinfeng Chemical Fiber Co., Ltd. specializes in production and sales：polypropylene staple fiber, polyester Staple Fiber, functional polypropylene short fiber, functional polyester staple fiber, hydrophilic polyester staple fiber,  polypropylene, PP staple fiber, polyester staple fiber.