US 12,366,014 B2
Method for preparing black fibers
Hongwei Fan, Wujiang (CN); Jiangen Shen, Wujiang (CN); Lili Wang, Wujiang (CN); Fangming Tang, Wujiang (CN); and Zhengping Yuan, Wujiang (CN)
Assigned to JIANGSU HENGLI CHEMICAL FIBRE CO., LTD., Wujiang (CN)
Appl. No. 18/723,469
Filed by JIANGSU HENGLI CHEMICAL FIBRE CO., LTD., Wujiang (CN)
PCT Filed Nov. 2, 2022, PCT No. PCT/CN2022/129160
§ 371(c)(1), (2) Date Jun. 24, 2024,
PCT Pub. No. WO2023/116211, PCT Pub. Date Jun. 29, 2023.
Claims priority of application No. 202111596505.5 (CN), filed on Dec. 24, 2021.
Prior Publication US 2025/0066958 A1, Feb. 27, 2025
Int. Cl. D02G 3/04 (2006.01); D01F 1/04 (2006.01); D02G 1/02 (2006.01); D02G 3/44 (2006.01)
CPC D02G 3/045 (2013.01) [D01F 1/04 (2013.01); D02G 1/022 (2013.01); D02G 1/028 (2013.01); D02G 1/0286 (2013.01); D02G 3/44 (2013.01); D10B 2331/04 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for preparing black fiber, using a drawn textured yarn (DTY) texturing process, wherein a polyester pre-oriented yarn (POY) fiber and a polyester fully drawn yarn (FDY) fiber 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 first deformation hot box, a cooling plate, a false twister, a third yarn feeding roller, a middle entangling device, a setting hot box, a setting yarn feeding roller, oiling, and winding to obtain the black fiber;
wherein the polyester POY fiber and the polyester FDY fiber both contain carbon black;
wherein the first yarn guide is a yarn guide wheel, a rim width of the yarn guide wheel is 20-25 mm, an outer diameter of an outer wheel of the yarn guide wheel is 9.4-10.7 mm, and an inner diameter of the groove bottom is 6-7.4 mm;
wherein a material of the first yarn guide is ceramic, a surface hardness of the groove bottom of the first yarn guide is 1500-2000 HV;
wherein a tow contacts a groove bottom of the first yarn guide in a process of movement, driving the first yarn guide to rotate;
wherein the tensioner is a magnetic tensioner; wherein the tow contacts a groove bottom of a yarn guide wheel carried by the tensioner in the process of movement; wherein a setting tension value of the tensioner is 7-10 cN;
wherein a linear velocity ratio of the first yarn feeding roller to the second yarn feeding roller is 1.03-1.04.