Polypropylene fibers can be categorized into long fibers, short fibers, spunbonded nonwovens, meltblown nonwovens, and more.

Polypropylene long fibers are categorized into normal long fibers and fine denier long fibers (single fiber fineness ≤ 2.2 dtex, suitable for producing garments, decorations, and some industrial long fiber products. Polypropylene fine denier long fibers have good luster, soft hand feel, excellent drape, and low density, making them ideal for the knitting industry. When blended with cotton, viscose, silk, spandex, and other fibers to create products like cotton over polypropylene and silk over polypropylene, they are perfect materials for making sportswear, T-shirts, and more.

Polypropylene short fibers are primarily produced using porous, low-speed, continuous processes, known as the short spinning process. Mixed with cotton, these fibers can be used to create poly cotton fine fabrics and bed linens. Blended with viscose, the fibers can produce blankets. Polypropylene can be spun both pure and blended into yarns, used for blankets, carpets, and cigarette filters. The fiber thickness for hygiene products ranges from 1.5 to 2.5 dtex, while for ground fabrics, it ranges from 5 to 10 dtex. The fiber length varies from 1.5 to 200.0 mm, depending on the application. Short fibers for concrete typically range from 1.5 to 200.0 mm, diapers usually require a length of 40.0 mm, and ground fabric lengths are generally 60.0 mm.

Spunbond nonwoven fabric, also known as filament nonwoven, is made by melting polypropylene material, then extruding, spinning, stretching, laying out, and bonding it into shape. It boasts short processes, low costs, high production rates, excellent product performance, and wide applications. Polypropylene nonwoven fabrics are extensively used in various fields of production and daily life, such as disposable medical supplies, one-time protective clothing, agricultural fabrics, furniture fabrics, and shoe lining materials.

The fibers produced by meltblown nonwoven technology are extremely fine (down to 0.25μm). Meltblown nonwovens feature a large specific surface area, small pores, and a high porosity, making their filtration, shielding, and oil-absorbing properties difficult to achieve with nonwovens produced by other separate processes. Meltblown nonwovens are widely used in healthcare, thermal insulation materials, and filtration materials, among other fields.