Title:
再生ポリエチレンテレフタレート長繊維及びその製造方法
Document Type and Number:
Japanese Patent JP7310028
Kind Code:
B2
Abstract:
A type of recycled polyester filament and preparation method therefor is disclosed, in the process of preparing a fiber from a recycled polyester according to the FDY process, the ring-blowing is used for cooling, and the distribution of spinneret holes on the spinneret is controlled to meet certain conditions, then a recycled polyester filament is obtained by relaxation heat treatment after a fully drawn yarn is produced; wherein the spinneret holes are C-shaped spinneret holes and circular spinneret holes, the cross-section of the C-shaped spinneret hole is composed of an outer arc M, an inner arc N and two line segments, and two endpoints of the outer arc M are A and B respectively; wherein the certain conditions comprise: all the spinneret holes are distributed in concentric circles, and the C-shaped spinneret holes are located on the outermost circle, rotating at different angles and randomly distributed; wherein the prepared recycled polyester filament has a three-dimensional crimp shape, and the monofilament crimping directions are randomly distributed. The present invention uses a simple method to produce recycled polyester filaments with three-dimensional crimp shapes, and solves the problem of "strip unevenness" in knitted fabrics made from three-dimensional crimp fibers.
Inventors:
Fan Hongwei
Wang Sansui
Wang Lili
Yukata Akira
Wang Sansui
Wang Lili
Yukata Akira
Application Number:
JP2022540692A
Publication Date:
July 18, 2023
Filing Date:
June 12, 2020
Export Citation:
Assignee:
Jiangsu Hengli Chemical Fiber Co., Ltd.
International Classes:
D02J1/22; D01D5/253
Foreign References:
| CN104357938A | ||||
| CN207435595U | ||||
| CN103409832A | ||||
| CN108035010A | ||||
| CN111793831A |
Attorney, Agent or Firm:
Patent Attorney Corporation Goto Patent Office