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

Polypropylene long fibers are categorized into regular long fibers and fine denier long fibers (single fiber fineness ≤ 2.2 dtex, suitable for producing garments, decorations, and some industrial long fiber products. Fine denier polypropylene long fibers offer 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 fibers to create products like cotton-over-PP and silk-over-PP, 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 short spinning technology. These fibers can be blended with cotton to create cotton/propylene fine fabrics and bedding, while a blend of fibers and viscose can be used for blankets. Applications include pure and blended polypropylene yarns, polypropylene blankets, carpets, and cigarette filters. The fiber size for hygiene products ranges from 1.5 to 2.5 dtex, while ground fabric fibers are typically 5 to 10 dtex. Fiber length ranges from 1.5 to 200.0 mm, depending on the intended use. Short fibers for concrete are 1.5 to 200.0 mm, diapers usually require 40.0 mm, and ground fabrics are 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 fabric is extensively used in various fields of production and daily life, such as disposable medical supplies, single-use 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 have a large specific surface area, small pores, and a high porosity, which makes their application properties such as filtration, shielding, and oil absorption characteristics difficult to achieve with nonwovens produced by other single processes. Meltblown nonwovens are widely used in healthcare, thermal insulation materials, and filtration materials, among other fields.