CPC D04H 1/43828 (2020.05) [D01D 5/088 (2013.01); D01D 5/22 (2013.01); D01D 7/00 (2013.01); D01F 8/06 (2013.01); D04H 1/4383 (2020.05); D04H 1/43832 (2020.05); D04H 1/43835 (2020.05); D04H 1/43914 (2020.05); D04H 1/43918 (2020.05); D04H 3/007 (2013.01); D04H 3/16 (2013.01); D10B 2321/021 (2013.01); D10B 2321/022 (2013.01)] | 19 Claims |
1. A self-crimped multi-component fiber (SMF), comprising:
(i) a first component comprising a first polymeric material, wherein the first polymeric material comprises a first melt flow rate (MFR) less than 50 g/10 min; the first polymeric material is formed from a blend of a first polyolefin fraction A consisting of a first polypropylene and having a melt flow rate-A (MFR-A) and a polyolefin fraction B consisting of a second polypropylene and having a melt flow rate-B (MFR-B); wherein the first polymeric material comprises from 0.5 to 12% by weight of the second polypropylene and a MFR-ratio between MFR-B and MFR-A is from 15:1 to 100:1; and
(ii) a second component comprising a second polymeric material, wherein the second component is formed from a polyethylene; wherein
the SMF comprises one or more three-dimensional crimped portions.
|