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:
Sep. 09, 2025
Filed:
Dec. 05, 2024
Jiangsu Ganghong Fiber Co., Ltd., Suzhou, CN;
Shuchang Bian, Suzhou, CN;
Rui Wang, Suzhou, CN;
Jiangsu Ganghong Fiber Co., Ltd., Suzhou, CN;
Abstract
The present disclosure relates to a high-viscosity PTT polymerization reactor and a method for preparing direct melt-spun high-viscosity PTT/low-viscosity PET two-component elastic fiber. A cage disc reactor combinations is designed in the low viscosity zone of the polymerization reactor, a circular channel is designed in the middle portion of the disc reactor combinations, and an agitating shaft is disposed in both the med-high viscosity zone and the high viscosity zone. The cage disc reactor combinations is designed with a material propelling part. The high-viscosity PTT production line comprises a first esterification reactor, a second esterification reactor, a first prepolymerization reactor, a second prepolymerization reactor, and a high-viscosity PTT polymerization reactor. The prepared elastic fiber can reach a fiber strength of 2.6˜3.2 cN/dtex, a crimp shrinkage rate of 25%˜75%, and a crimp stability of 82%˜90%.