EP 4206398 A1 20230705 - ARTIFICIAL LEATHER
Title (en)
ARTIFICIAL LEATHER
Title (de)
KUNSTLEDER
Title (fr)
CUIR ARTIFICIEL
Publication
Application
Priority
- JP 2020144200 A 20200828
- JP 2021030343 W 20210819
Abstract (en)
An object is to provide artificial leather that has supple flexibility and has moderate resilience while being dense and having satisfactory thickness. A main object is to provide artificial leather that includes, as constituent elements, a nonwoven fabric containing ultrafine fibers having an average single-fiber diameter of 0.1 um or more and 10 µm or less, and an elastomer, the artificial leather satisfying Formulas (a) and (b) below: 0.5≤FA/FB<10.5≤FC/FB<1 where F<sub>A</sub>, F<sub>B</sub>, and F<sub>C</sub> are respectively the fiber density (g/cm<sup>3</sup>) in a layer on one surface side, the fiber density (g/cm<sup>3</sup>) in a layer at the center in the thickness direction, and the fiber density (g/cm<sup>3</sup>) in a layer on the other surface side when the artificial leather is trisected in the thickness direction.
IPC 8 full level
D06N 3/00 (2006.01)
CPC (source: EP KR US)
D06N 3/0004 (2013.01 - EP); D06N 3/0011 (2013.01 - EP KR US); D06N 3/0025 (2013.01 - KR); D06N 3/0027 (2013.01 - US); D06N 3/0036 (2013.01 - EP); D06N 3/0052 (2013.01 - EP); D06N 3/0075 (2013.01 - EP); D06N 3/106 (2013.01 - EP); D06N 3/14 (2013.01 - EP KR US); D06N 3/186 (2013.01 - KR US); D06N 2201/0254 (2013.01 - KR US); D06N 2209/1635 (2013.01 - KR US); D06N 2211/28 (2013.01 - KR US)
Citation (search report)
See references of WO 2022044945A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4206398 A1 20230705; CN 115917076 A 20230404; JP WO2022044945 A1 20220303; KR 20230056624 A 20230427; TW 202208721 A 20220301; US 2023287625 A1 20230914; WO 2022044945 A1 20220303
DOCDB simple family (application)
EP 21861373 A 20210819; CN 202180043399 A 20210819; JP 2021030343 W 20210819; JP 2021550176 A 20210819; KR 20227037843 A 20210819; TW 110130977 A 20210823; US 202118020997 A 20210819