Polypropylene yarns are divided into many types. Common types are polypropylene filaments, fine denier polypropylene filaments, and ultrafine denier polypropylene filaments, such as textured yarn, network yarn, and polypropylene air change yarn, which are not commonly used in the garment industry. The line is also a member of the polypropylene field. Although their performance is not very extensive, it is also indispensable in life.

When the fine denier polypropylene is in the process of spinning, each filament is not a single root, but a multifilament synthesized by a fine monofilament of 15-good quality. If the air is compressed during the spinning process and the yarn is blown loose, and they are twisted and integrated with each other to form a new type of yarn, we become a "network wire". This type of polypropylene fiber has better strength and weaving. In the process, even the upper sizing is not required, so it is also called "free pulp". Fabrics made from such network yarns have a strong felt-like feel, and such fibers are usually deformed during the imitation process.

Such as strong, false twist, non-stretched textured yarn or yarn, we call it a textured yarn, polypropylene textured yarn, polyester textured yarn, polypropylene air change yarn is also known as polypropylene ATY, polypropylene air change yarn is a product of chemical fiber filament, polypropylene empty The variable filament is made by compressing and deforming the filament of the chemical fiber by using compressed air, and then exposing the broken yarn head to the yarn which is woven by the short yarn. Up to now, polypropylene, polyester and nylon have air-deformed yarns, which are used as fabrics for imitation cotton and wool.