METHOD FOR IMPROVING QUALITY OF POLYESTER INDUSTRIAL YARN - JIANGSU HENGLI CHEMICAL FIBRE CO LTD

Title:

METHOD FOR IMPROVING QUALITY OF POLYESTER INDUSTRIAL YARN

Document Type and Number:

WIPO Patent Application WO/2019/114282

Kind Code:

A1

Abstract:

A method for improving the quality of a polyester industrial yarn. First, in a cooling procedure of preparing the polyester industrial yarn by means of polyester spinning, the longitudinal height maintains unchanged, the cross-sectional area of a slow cooling chamber is increased, and the slow cooling chamber maintains the surface temperature of a spinneret by means of heat insulation; and then, in an oiling procedure of preparing the polyester industrial yarn by means of polyester spinning, a finishing oil containing 67.30-85.58wt% of crown ether is used. The increase of the cross-sectional area of the slow cooling chamber refers to changing the cross-section of the slow cooling chamber from a circular shape to a rectangular shape, while maintaining the spinneret connected to the slow cooling chamber unchanged, such that a spinneret cleaning cycle is finally prolonged by 35-45%, and the full volume rate of the polyester industrial yarn is greater than or equal to 99%. The method is simple and reasonable, and the quality of the industrial yarn is improved.

Inventors:

FAN HONGWEI (CN)
YANG DAMAO (CN)
ZHANG YE (CN)
TANG FANGMING (CN)
ZHAO HUIRONG (CN)

Application Number:

PCT/CN2018/097507

Publication Date:

June 20, 2019

Filing Date:

July 27, 2018

Export Citation:

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Assignee:

JIANGSU HENGLI CHEMICAL FIBRE CO LTD (CN)

International Classes:

D01D5/088; D01D4/02; D01D5/096; D01F11/08

Foreign References:

CN107937998A	2018-04-20
CN107893264A	2018-04-10
CN108130743A	2018-06-08
CN107904694A	2018-04-13
CN105648552A	2016-06-08
CN202881461U	2013-04-17
CN104451940A	2015-03-25
US20080193656A1	2008-08-14
US20110086415A1	2011-04-14

Other References: