How does polypropylene staple fiber stand out among numerous synthetic fibers?

Polypropylene staple fibers stand out among numerous synthetic fibers, mainly due to their unique physical and chemical properties as well as economic efficiency. Compared with common synthetic fibers such as polyester, nylon and acrylic, polypropylene staple fibers have significant advantages in many aspects. The following is an analysis:

Lightweight, high strength and low density

The density of polypropylene is only 0.91 g/cm, which is lighter than that of water (the density of water is 1 g/cm), making it one of the lightest among all common synthetic fibers at present.

Although it has a low density, through the optimization of the stretching process, its strength can reach 3.5-6.0 cN/dtex, approaching the level of polyester, and is suitable for lightweight applications.

2. Excellent hydrophobicity and quick-drying property

It hardly absorbs water (moisture regain <0.1%), which is much lower than that of polyester (0.4%) and cotton fibers (8%). Therefore:

It is not prone to mold and bacteria growth and has good hygiene.

It can still maintain softness in a wet state and will not harden like cotton fibers.

It dries extremely fast and is suitable for use in humid environments.

3. Excellent chemical corrosion resistance

It has extremely strong resistance to acids, alkalis and organic solvents (such as acetone and ethanol), and is superior to polyester and nylon.

4. Environmental protection and recyclability

The raw material is polypropylene (PP), which is non-toxic and pollution-free. After combustion, it only produces CO and water, without any toxic gases (for example, polyester combustion will release benzene series substances). It can be 100% recycled and reused. Through melting, re-granulation and re-spinning, it conforms to the trend of circular economy.

5. Low production cost and processing convenience

Low raw material cost: Polypropylene is a by-product of petrochemicals and its price is lower than that of PET (polyester raw material).

Low energy consumption: With a melting point of only 160-170℃, it is more energy-efficient than polyester (above 250℃).

Easy to modify: Functions such as UV resistance, flame retardancy and antibacterial can be achieved by adding masterbatches, and the modification cost is relatively low.

6. Thermal insulation and warmth retention

Polypropylene has a low thermal conductivity and a fluffy fiber structure, which can effectively prevent heat loss. Therefore:

Suitable for making warm filling materials (such as down imitation); In winter clothing, it is lighter than polyester under the same warmth retention effect.

Hubei Botao Synthetic Fiber Co., Ltd. was established in November 2002 and is located in Jingmen High-tech Industrial Development Zone, covering an area of 300,000 square meters. having 5 subsidiaries. It is a manufacturing enterprise specializing in the production and sales of polypropylene fiber, polyester fiber, BI-CO fiber,PE fiber, polylactic acid staple fiber and various non-woven fabrics.The products are mainly used for automotive interiors, geotextiles, carpets, filtration,hygiene,spinning and other industries. The output of polypropylene staple fiber is more than 150,000 tons, polyester staple fiber 20,000 tons.For 5 consecutive years, sales revenue and market share ranked the top three.The company has been deeply involved in the field of polypropylene fiber manufacturing for more than 20 years and It is currently one of the top three suppliers of polypropylene staple fiber production capacity in China. On December 25, 2024, the company was successfully obtained the approval letter for listing from the National Equities Exchange and Quotations Company.