EP 4043623 A1 20220817 - SHEATH-CORE COMPOSITE FIBER AND MULTIFILAMENT
Title (en)
SHEATH-CORE COMPOSITE FIBER AND MULTIFILAMENT
Title (de)
KERN-HÜLLE-VERBUNDFASER UND MULTIFILAMENT
Title (fr)
FIBRE COMPOSITE ÂME-GAINE ET MULTIFILAMENT
Publication
Application
Priority
- JP 2019185219 A 20191008
- JP 2019195290 A 20191028
- JP 2020037537 W 20201002
Abstract (en)
A sheath-core composite fiber which is composed of two or more polymers, wherein a core component having a multifoliate shape with three or more projections is completely covered by a sheath component in a fiber cross-section of the sheath-core composite fiber, while having a ratio of the maximum thickness Smax of the sheath component to the minimum thickness Smin of the sheath component, namely Smax/Smin of 5.0 or more; and a multifilament which is composed of the core component of this sheath-core composite fiber. The present invention provides a sheath-core composite fiber and a multifilament, which are suitable for the achievement of a good textile that is comparable to natural silk.
IPC 8 full level
CPC (source: CN EP KR US)
D01D 5/34 (2013.01 - CN EP KR US); D01F 8/04 (2013.01 - US); D01F 8/14 (2013.01 - CN KR); D02G 3/04 (2013.01 - CN KR); D04H 1/4391 (2013.01 - US); D01D 5/22 (2013.01 - EP US); D01D 5/253 (2013.01 - EP); D01F 8/14 (2013.01 - EP)
Citation (search report)
See references of WO 2021070740A1
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
DOCDB simple family (publication)
EP 4043623 A1 20220817; CN 114521216 A 20220520; JP WO2021070740 A1 20210415; KR 20220073702 A 20220603; TW 202122454 A 20210616; US 2022341060 A1 20221027; WO 2021070740 A1 20210415
DOCDB simple family (application)
EP 20874251 A 20201002; CN 202080066545 A 20201002; JP 2020037537 W 20201002; JP 2020571859 A 20201002; KR 20217041989 A 20201002; TW 109134666 A 20201007; US 202017641018 A 20201002