EP 4265828 A1 20231025 - COMPOSITE FIBER AND MULTIFILAMENT
Title (en)
COMPOSITE FIBER AND MULTIFILAMENT
Title (de)
VERBUNDFASER UND MULTIFIL
Title (fr)
FIBRE COMPOSITE ET MULTIFILAMENT
Publication
Application
Priority
- JP 2020210112 A 20201218
- JP 2021046396 W 20211215
Abstract (en)
The present invention provides a conjugate fiber wherein the sum of the lengths of interfaces that are formed by two or more kinds of polymers that constitute a fiber cross-section is extremely large. A conjugate fiber according to the present invention has a fiber cross-section which is composed of two or more kinds of polymers that form a plurality of interfaces; the value obtained by dividing the sum of the interface lengths between two kinds of polymers by the area of the fiber cross-section is 0.0010 nm-1 or more; and the interfaces are continuous in the fiber axis direction.
IPC 8 full level
CPC (source: EP KR US)
D01D 5/253 (2013.01 - EP US); D01D 5/32 (2013.01 - EP US); D01D 5/34 (2013.01 - US); D01F 8/06 (2013.01 - EP); D01F 8/12 (2013.01 - EP); D01F 8/14 (2013.01 - EP KR US); D10B 2331/04 (2013.01 - US); D10B 2401/00 (2013.01 - US)
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 4265828 A1 20231025; CN 116583634 A 20230811; JP WO2022131312 A1 20220623; KR 20230119647 A 20230816; TW 202233919 A 20220901; US 2024110314 A1 20240404; WO 2022131312 A1 20220623
DOCDB simple family (application)
EP 21906673 A 20211215; CN 202180084298 A 20211215; JP 2021046396 W 20211215; JP 2021575507 A 20211215; KR 20237019975 A 20211215; TW 110147347 A 20211217; US 202118267798 A 20211215