Polypropylene staple fiber is made of polypropylene as raw material, through melting, stretching, spinning, cutting and other processes. In the process of making polypropylene staple fiber, anti-aging masterbatch, flame retardant masterbatch and other functional masterbatch can be added according to needs to improve the performance of acrylic staple fiber. Polypropylene staple fiber for felt is specially used for felt production of acrylic staple fiber for filter material.

Polypropylene staple fiber elongation performance is very good.

Polypropylene staple fiber looks like cotton ball from the outside, soft and elastic, polypropylene staple fiber elongation performance is large, production control is not good, elongation of 60%. In addition to the structural elements of the polypropylene polymer itself, there is also the possibility of insufficient stretching during the production process. Due to the large non-uniformity of the yarn, it is easy to finish the winding when increasing the tensile ratio, and sometimes it will drag the foot and then withdraw the winding. In the production, it was found that the yarn shrinkage between the second and the third drawing machine during parking made the three five-roll reversals, and the internal stress of the fibers after orientation was large and there was shrinkage, which could be improved by tension heat setting or appropriate heat treatment.

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