US 12,460,323 B2
Continuous and discontinuous fibers, yarn, fabrics and composites using short natural fibers and fibrils
Mohammad Hamza Kirmani, Troy, MI (US); Bradley Allen Newcomb, Troy, MI (US); and Xiaosong Huang, Novi, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on May 17, 2023, as Appl. No. 18/319,215.
Prior Publication US 2024/0384444 A1, Nov. 21, 2024
Int. Cl. B27N 1/02 (2006.01); B29B 7/00 (2006.01); B29C 48/15 (2019.01); B29C 48/154 (2019.01); B29C 48/16 (2019.01); B29C 70/02 (2006.01); D01B 1/14 (2006.01); D01B 5/00 (2006.01); D01B 5/02 (2006.01); D01D 1/02 (2006.01); D01D 5/04 (2006.01); D01D 5/06 (2006.01); D01D 5/40 (2006.01); D01F 1/10 (2006.01); D01G 1/04 (2006.01); D01G 9/00 (2006.01); D01G 13/00 (2006.01); D01H 1/14 (2006.01); D01H 3/02 (2006.01); D01D 5/08 (2006.01)
CPC D01G 13/00 (2013.01) [B29B 7/002 (2013.01); B29B 7/005 (2013.01); B29B 7/007 (2013.01); B29C 70/021 (2013.01); D01B 5/02 (2013.01); D01H 1/14 (2013.01); D01H 3/02 (2013.01); D01D 5/08 (2013.01); D10B 2401/063 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for manufacturing at least one of fibers and yarn from bast fibers, comprising:
providing bast fibers including technical fibers with a diameter of 50 to 100 μm, elementary fibers with a diameter of 10 to 20 μm, meso fibrils with a diameter of 0.1 to 0.3 μm, and micro fibrils with a diameter of 1 to 4 nm, wherein greater than or equal to 80% of the technical fibers, the elementary fibers, the meso fibrils, and the micro fibrils are short bast fibers having a length that is less than or equal to 12.7 mm, and less than or equal to 20% of the technical fibers, the elemental fibers, the meso fibrils and the micro fibrils are long bast fibers with a length of more than 12.7 mm;
creating at least one of a dispersion, a gel, a solution, a paste, and a dough including the technical fibers, the elementary fibers, the meso fibrils and the micro fibrils; and
spinning filaments of the at least one of fibers and yarn using the at least one of the dispersion, the gel, the solution, the paste, and the dough.