US 12,291,802 B2
Polyethylene yarn, method for manufacturing the same, and skin cooling fabric comprising the same
Jae-Hyung Kim, Seoul (KR); Gi-Woong Kim, Seoul (KR); Seong-Young Kim, Seoul (KR); Sang-Mok Lee, Seoul (KR); Sin-Ho Lee, Seoul (KR); and Young-Soo Lee, Seoul (KR)
Assigned to KOLON INDUSTRIES, INC., Seoul (KR)
Appl. No. 17/602,704
Filed by KOLON INDUSTRIES, INC., Seoul (KR)
PCT Filed Dec. 27, 2019, PCT No. PCT/KR2019/018558
§ 371(c)(1), (2) Date Oct. 8, 2021,
PCT Pub. No. WO2021/132768, PCT Pub. Date Jul. 1, 2021.
Prior Publication US 2022/0205145 A1, Jun. 30, 2022
Int. Cl. D02G 3/44 (2006.01); D01D 5/088 (2006.01); D01F 6/04 (2006.01)
CPC D02G 3/44 (2013.01) [D01D 5/088 (2013.01); D01F 6/04 (2013.01); D10B 2321/021 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A polyethylene yarn,
wherein in a strength-elongation curve of the polyethylene yarn obtained by measuring at ambient temperature, (i) elongation at strength of 1 g/d is 1 to 3%, (ii) elongation at strength of 3 g/d is 6 to 10%, and (iii) a difference between elongation at strength of 4 g/d and elongation at maximum strength is 9 to 25%, and
the polyethylene yarn has toughness of 55 to 120 J/cm3 at ambient temperature,
wherein the polyethylene var includes a polyethylene polymer having a weight average molecular weight (Mw) of 50,000 to 99,000 g/mol, a polydispersity index (PDI) of 5.5 to 9, and a melt index (MD) of 6 to 21 g/10 min at 190° C.