The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 2025
Filed:
Nov. 21, 2024
Jiangsu Ganghong Fiber Co., Ltd., Suzhou, CN;
Shuchang Bian, Suzhou, CN;
JIANGSU GANGHONG FIBER CO., LTD., Suzhou, CN;
Abstract
A melt-spun single-reactor high-viscosity PET/low-viscosity PET two-component elastic fiber and preparation method therefor. The preparation method includes steps of obtaining an ethylene terephthalate prepolymer, a step of introducing the ethylene terephthalate prepolymer into a final polymerization reactor for polymerization, wherein the final polymerization reactor has a low-viscosity melt outlet from which a low-viscosity PET melt is discharged and a high-viscosity melt outlet from which a high-viscosity PET melt are is discharged, and a step of spinning the low-viscosity PET melt and the high-viscosity PET melt through a same parallel composite spinning assembly to obtain the PET two-component elastic fiber. The method can realize simultaneous polymerization of high-viscosity and low-viscosity components in the same final polymerization reactor, and the obtained fiber has good performance.