ALEXANDRIA, Va., July 23 -- United States Patent no. 12,366,014, issued on July 22, was assigned to JIANGSU HENGLI CHEMICAL FIBRE Co. LTD. (Wujiang, China).
"Method for preparing black fibers" was invented by Hongwei Fan (Wujiang, China), Jiangen Shen (Wujiang, China), Lili Wang (Wujiang, China), Fangming Tang (Wujiang, China) and Zhengping Yuan (Wujiang, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for preparing black cotton-like fibers is provided, using a DTY texturing process, wherein POY and FDY fibers containing carbon black are sequentially passed through a first yarn guide, a yarn guide roller, a tensioner, a first yarn feeding roller, pre-entangling, a second yarn feeding roller, a ...