EP 4212655 A1 20230719 - SEA-ISLAND-TYPE COMPOSITE FIBER, AND FIBER PRODUCT INCLUDING SEA-ISLAND-TYPE COMPOSITE FIBER
Title (en)
SEA-ISLAND-TYPE COMPOSITE FIBER, AND FIBER PRODUCT INCLUDING SEA-ISLAND-TYPE COMPOSITE FIBER
Title (de)
MEERESINSELVERBUNDFASER UND FASERPRODUKT MIT MEERESINSELVERBUNDFASER
Title (fr)
FIBRE COMPOSITE DE TYPE MER-ÎLOT, ET PRODUIT FIBREUX COMPRENANT UNE FIBRE COMPOSITE DE TYPE MER-ÎLOT
Publication
Application
Priority
- JP 2020149756 A 20200907
- JP 2021032054 W 20210901
Abstract (en)
A fiber characterized by being a sea-island-type composite fiber in which the primary constituent component of the sea section is an aromatic polyester, the moisture absorption/desorption parameter ΔMR is at least 2.0%, and a diagram obtained by connecting the center of gravity of the islands positioned on the outermost periphery of the fiber cross-sectional surface with line segments is a regular polygon having the center of gravity as an apex. Provided is a polyester fiber having superior quality with no splitting of the fiber surface caused by dispersion of stress generated due to volume expansion of the fibers when absorbing moisture, no dyeing irregularity or fuzzing when used in a woven or knitted fabric, and no reduction in moisture absorption due to hot-water processing, etc.
IPC 8 full level
D01F 8/14 (2006.01)
CPC (source: EP US)
D01D 5/36 (2013.01 - EP); D01F 8/14 (2013.01 - EP US); D10B 2331/042 (2013.01 - US); D10B 2401/02 (2013.01 - US)
Citation (search report)
See references of WO 2022050291A1
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 4212655 A1 20230719; CN 116018432 A 20230425; JP WO2022050291 A1 20220310; TW 202223184 A 20220616; US 2023332336 A1 20231019; WO 2022050291 A1 20220310
DOCDB simple family (application)
EP 21864348 A 20210901; CN 202180051465 A 20210901; JP 2021032054 W 20210901; JP 2021569090 A 20210901; TW 110132962 A 20210906; US 202118023888 A 20210901