This paper introduces a special-shaped polypropylene staple fiber for high-efficiency filtration. The cross-sectional shape of the profiled polypropylene staple fiber is any one of the following: C-shaped, round hollow, trilobal, cross-shaped, m-shaped and triangular, and the fineness of the profiled polypropylene staple fiber It is 3.3 to 13.2 dtex, the length is 38 to 102 mm, the profile is 50 to 70%, the strength is greater than 3.0 CN/dtex, and the profiled polypropylene staple fiber contains 0.6% to 0.02% by weight of the silicone active agent.

This type of polypropylene staple fiber is a special-shaped polypropylene fiber suitable for industrial production, meeting the increasing filter material, and specializing in the field of filtration and increasing the amount of dirt.