US 12,031,267 B2
Synthetic leather
Haruki Ito, Fukui (JP)
Assigned to SEIREN CO., LTD., Fukui (JP)
Appl. No. 17/607,228
Filed by SEIREN CO., LTD., Fukui (JP)
PCT Filed May 12, 2020, PCT No. PCT/JP2020/019000
§ 371(c)(1), (2) Date Oct. 28, 2021,
PCT Pub. No. WO2020/261785, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 2019-116644 (JP), filed on Jun. 24, 2019.
Prior Publication US 2022/0220667 A1, Jul. 14, 2022
Int. Cl. D06N 3/00 (2006.01); D06N 3/14 (2006.01)
CPC D06N 3/0043 (2013.01) [D06N 3/0061 (2013.01); D06N 3/0097 (2013.01); D06N 3/145 (2013.01); D06N 3/146 (2013.01); D06N 3/147 (2013.01); D06N 3/0009 (2013.01); D06N 3/0036 (2013.01); D06N 2211/28 (2013.01); D06N 2213/03 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A synthetic leather comprising a fibrous substrate, a non-porous resin layer, and a porous resin layer provided between the fibrous substrate and the non-porous resin layer,
wherein the synthetic leather has a thickness of 800 μm or more, and
a vertical cross-section of the porous resin layer has a pore area ratio of 25% or more,
wherein the fibrous substrate has a density (S1) of 0.05 to 1.0 g/cm3, the porous resin layer has a density (S2) of 0.1 to 2.0 g/cm3, and the non-porous resin layer has a density (S3) of 2 to 5 g/cm3.