Title:
DIFFERENT-SHRINKAGE COMPOSITE YARN AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/040690
Kind Code:
A1
Abstract:
The present invention relates to a different-shrinkage composite yarn and a preparation method therefor. A modified polyester is spun using a multi-hole spinneret plate to produce a different-shrinkage composite yarn, wherein the spinneret holes on the multi-hole spinneret plate are arranged in an elliptical shape mode, i.e., the hole centres of the spinneret holes are in series concentric ellipses, wherein the long axes of all the ellipses are collinear, and the minor axes of all the ellipses are collinear. The differential shrinkage composite yarn is prepared by plying and doubling a modified polyester POY yarn and an FDY yarn, network compounding and finally winding, a method for preparing the modified polyester comprising reacting terephthalic acid with ethylene glycol to prepare ethylene glycol terephthalate, adding a terephthalic acid diol ester prepared by reacting terephthalic acid with a branched chain-bearing diol, and continuing to react to obtain the modified polyester. The fibre prepared by the present invention has a good performance, and the different-shrinkage composite yarn has a linear density deviation ratio of ≤ 2.0％, a breaking strength CV value of ≤ 4.0％, a breaking elongation CV value of ≤ 8.0％, and a crimp contraction variable coefficient CV value of ≤ 8.0％.
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Inventors:
FAN HONGWEI (CN)
JIN GUANFAN (CN)
CHEN MING (CN)
YIN LIXIN (CN)
TANG FANGMING (CN)
YANG CHAOMING (CN)
JIN GUANFAN (CN)
CHEN MING (CN)
YIN LIXIN (CN)
TANG FANGMING (CN)
YANG CHAOMING (CN)
Application Number:
PCT/CN2017/089945
Publication Date:
March 08, 2018
Filing Date:
June 26, 2017
Export Citation:
Assignee:
JIANGSU HENGLI CHEMICAL FIBRE CO LTD (CN)
International Classes:
D01F6/92; D01D4/02; D01D5/08; D01D5/24; D01D5/253; D01F1/10
Foreign References:
| CN106381558A | 2017-02-08 | |||
| CN102648231A | 2012-08-22 | |||
| CN102851757A | 2013-01-02 | |||
| CN104878487A | 2015-09-02 | |||
| CN101063236A | 2007-10-31 | |||
| JP2014189933A | 2014-10-06 |
Other References:
See also references of EP 3508625A4
Attorney, Agent or Firm:
TONGSHE INTELLECTUAL PROPERTY AGENCY (CN)
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