Patent · US Active

Superfine polyester fiber and tubular seamless fabric

US10363153B2 · kind B2 · utility

0Cited by

2References

5Claims

0Family size

Assignee

ASAHI KASEI FIBERS CORPORATION · JP

Inventors

Tetsuko Takahashi · Nobeoka, JP
Junichi Kojima · Tokyo, JP
Keiichi Toyoda · Tokyo, JP

Key dates

Filing date	Mar 12, 2013
Grant date	Jul 30, 2019
Priority date	—
Expiry date	Jul 10, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2913
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

Provided is a superfine polyester fiber containing at least 98 wt % of a polyethylene terephthalate component, and characterized by fulfilling the following conditions: (1) the reduced viscosity (ηsp/c) is at least 0.80 dl/g; (2) the total fineness is 7-120 dtex, and the single filament fineness is no more than 0.5 dtex; and (3) the toughness parameter (X) indicated by formula (1) is at least 2.0, the tensile strength is at least 3.5 cN/dtex and the tensile elongation is at least 12%. X=(tensile strength×√tensile elongation)/(total fineness×single filament fineness) formula (1).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.