In the vast field of chemical fiber materials, polypropylene staple fibers have attracted much attention due to their unique properties and wide applications. To have a thorough understanding of polypropylene staple fiber, it is crucial to know its specifications.

The specifications of polypropylene staple fibers cover several important aspects. Linear density is one of the key specification indicators, which reflects the fineness of the fiber. The common linear density of polypropylene staple fibers is within a certain range, such as 1.5D to 200D. Different application scenarios have different requirements for linear density. In the field of non-woven fabrics for hygiene, finer polypropylene staple fibers, such as 1.5D - 3D fibers, are often required because they can endow non-woven fabrics with a soft hand feel and good coverage, fit the skin well, and are used to make hygiene products to enhance comfort. In the production of industrial filter cloth, coarser polypropylene staple fibers, such as 20D - 100D fibers, may be selected, which can enhance the strength and wear resistance of the filter cloth, adapt to complex filtration environments, and effectively intercept impurities.

Length is also an important specification parameter of polypropylene staple fiber. Its length range is usually 5 to 150mm. In the manufacturing of needle-punched carpets, polypropylene staple fibers with a length of 51mm to 76mm are commonly used. This length enables the fibers to interweave closely with each other during the needling process, forming a stable structure and ensuring that the carpet has good strength and durability. In the production of spunlace nonwoven fabrics, polypropylene staple fibers with a length of 38mm to 51mm are more favored, which helps to produce uniform, fine and moderately strong nonwoven fabric products, meeting the performance requirements of different fields for spunlace nonwoven fabrics.

In addition to linear density and length, the specifications of polypropylene staple fibers also include the number of curls, roll curvature, and breaking strength, etc. The number of curls and the curvature of the curls affect the fiber's cohesion and fluffiness, while the breaking strength determines the fiber's ability to withstand tensile force during use. Different industries have different requirements for these indicators. For instance, in the textile industry, polypropylene staple fibers used for weaving garment linings need to have an appropriate number of crimp and crimp curvature to ensure the softness and drape of the fabric. At the same time, they should have a certain breaking strength to ensure that the clothing is not easily damaged during wearing. In the field of concrete reinforcement, the added polypropylene short fibers need to have a relatively high tensile strength in order to effectively enhance the crack resistance of concrete and improve the stability of building structures.

Polypropylene staple fibers come in a rich variety of specifications, with different specifications corresponding to different application scenarios and performance requirements. In practical applications, it is necessary to precisely select the appropriate specification of polypropylene staple fibers based on specific usage purposes, so as to fully leverage their performance advantages and meet the production demands of various industries.

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