Polyesterfaser, Verfahren zur Herstellung davon und Faserstruktur

Details

Veröffentlichungs-Nr.

EP4717805

Anmeldetag

21. Mai 2024

Veröffentlichung

28. November 2024

Rechtsraum

EP

IPC

D01F6/62, D21H17/53

Abstract

Provided is an ultrafine polyester fiber capable of exhibiting excellent dispersibility regardless of an aspect ratio. The polyester fiber may have an average cross-sectional area x of 1 to 40 µm<2>, a standard deviation σ of a cross-sectional area of 10 µm<2> or less, a standard deviation σ of a cross-sectional area of 10 µm<2> or less, and a ratio Ao/Ai of a sum Ao of cross-sectional areas of data outside a range of x ± 2.5σ to a sum Ai of cross-sectional areas of data within the range of x ± 2.5σ of 10% or less, wherein these values are calculated from data of cross-sectional areas of single fibers. The polyester fiber may have an average fiber diameter of single fibers of 1 to 10 µm, and a roundness of a fiber cross-section of 0.90 to 1.00.

Anmelder

Firma

Kuraray Co., Ltd.

Land

🇯🇵 Japan

Fachgebiete