Due to the rapid economic development, the research on this new type of functional yarn is becoming more and more perfect. Polypropylene is also developing rapidly due to its simple process, low cost, and relatively high strength. It is now one of the four major chemical fibers and one of the common synthetic fibers.

Polypropylene staple fiber is a single kind of filament formed by polypropylene as a raw material, after polymerization and melt spinning. It is the lighter single species among the common fibers, and the sales volume has been increasing in recent years, which requires manufacturers to complete the output demanded by customers on time, so as to maintain the entire market for polypropylene filaments in short supply. Because polypropylene staple fiber itself has strong chemical resistance, except for strong concentrated nitric acid. Secondly, due to the unique wicking effect of polypropylene, the principle is that when the human body sweats, it can quickly transfer the sweat from the surface of the skin to the fabric, and evaporate, thereby keeping the bran dry and the clothes comfortable. This performance is also called unidirectional wetness.

In the chemical fiber industry, the start is late, and people's acceptance of cotton fabrics and polyester fibers is also different. When polypropylene was officially put into industrial production in 1957, it was considered a rising star of synthetic fibers. Polypropylene is very strong, its initial modulus is also large, and its elasticity is excellent, so both the textile industry and the clothing industry have obvious breakthrough development. Clothes made of polypropylene fiber are relatively light in weight and comfortable to the touch.

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