US 12,188,162 B2
Spunbonded nonwoven and tile carpet using the same
Woo-seok Choi, Seoul (KR); Min Ho Lee, Seoul (KR); Hee-jung Cho, Seoul (KR); Young-shin Park, Seoul (KR); and Jung-soon Jang, Seoul (KR)
Assigned to KOLON INDUSTRIES, INC., Seoul (KR)
Filed by KOLON INDUSTRIES, INC., Seoul (KR)
Filed on Apr. 8, 2022, as Appl. No. 17/715,985.
Application 17/715,985 is a continuation of application No. PCT/KR2020/015043, filed on Oct. 30, 2020.
Claims priority of application No. 10-2019-0142206 (KR), filed on Nov. 8, 2019.
Prior Publication US 2022/0228307 A1, Jul. 21, 2022
Int. Cl. D04H 3/011 (2012.01); A47G 27/02 (2006.01); D04H 3/073 (2012.01)
CPC D04H 3/011 (2013.01) [D04H 3/073 (2013.01); A47G 27/02 (2013.01); D10B 2331/04 (2013.01); D10B 2503/041 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A spunbonded nonwoven fabric comprising
a fiber web of mixed filament yarns of a first filament prepared from a polyester and a recycled polyester each having a melting point of 255° C. or more; and a second filament prepared from a copolyester having a lower melting point than that of the first filament by 30° C. or more,
wherein the first filament is a filament having a hollow fiber cross-section having a hollow ratio of 10 to 20%,
wherein a raw material of the recycled polyester has an average number of foreign matters with a size of 1.0 to 10.0 μm, of 10 or less, and
wherein the spunbonded nonwoven fabric has tensile strength of 20 kgf/5 cm or more and tensile elongation of 20% or more as measured according to the KS K 0521 test method, and is used as a base fabric for tile carpets.