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

Polypropylene long fibers are categorized into ordinary 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 feel, excellent drape, and low density, making them ideal for the knitting industry. When blended with cotton, viscose, silk, spandex, and other materials to create products like cotton-over-PP and silk-over-PP, they are perfect for making sportswear, T-shirts, and more.

Polypropylene short fibers are mainly produced using porous, low-speed, continuous processes, known as the short spinning process. These fibers can be blended with cotton to create丙棉细布, bedding, and blankets, as well as with粘胶 for carpet production. They are also used in pure and blended yarns for carpets, floor coverings, and cigarette filters filled with polypropylene cotton wadding. The fiber thickness for hygiene products ranges from 1.5 to 2.5 dtex, while for ground fabrics, it is 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, those for diapers are usually 40.0 mm, and for ground fabrics, 60.0 mm.

Spunbond nonwoven fabric, also known as filament nonwoven, is made by melting polypropylene material, then extruding, spinning, stretching, laying, and bonding it into shape. It boasts short processes, low costs, high production rates, excellent product performance, and wide applications. Polypropylene nonwoven fabric is 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.

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 application properties such as filtration, shielding, and oil absorbency difficult to achieve with nonwovens produced by other single processes. Meltblown nonwovens are widely used in the medical and health care, thermal insulation materials, and filtration materials fields.