COTTON-LIKE POLYESTER FIBER AND PREPARATION METHOD THEREFOR

WIPO Patent Application WO/2021/135083

A1

A cotton-like polyester fiber and a preparation method therefor. After PET is separately spun according to POY processing and FDY processing, the results are plied, and then a cotton-like polyester fiber is obtained by means of network compositing, winding, and relaxation thermal treatment. In the POY processing, spinneret holes in a spinneret plate are circular, and in the FDY processing, spinneret holes in a spinneret plate are of a trilobal shape, and cyclical blowing is used for cooling, the trilobal shapes of all of the trilobal spinneret holes forming a T shape. The obtained cotton-like polyester fiber takes a three-dimensional crimped form, and consists of a plurality of PET FDY monofilaments having trilobal cross-sections and a plurality of PET POY monofilaments having circular cross-sections. The crimp shrinkage thereof is 20-25%, the crimp stability is 73-75%, the rate of contraction and elongation is 50-53%, and the crimp elastic recovery is 78-82%. The breakage strength is 2.3-25 cN/dtex, the elongation at break is 20-30%, and the boiling water shrinkage is 3.0-4.0%.

FAN HONGWEI (CN)
WANG SHANSHUI (CN)
WANG LILI (CN)
TANG FANGMING (CN)

PCT/CN2020/095713

July 08, 2021

June 12, 2020

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JIANGSU HENGLI CHEMICAL FIBRE CO LTD (CN)

D01D5/253; D01D5/092; D01D5/23

CN111118623A	2020-05-08
CN103526323A	2014-01-22
US3640670A	1972-02-08
CN201648598U	2010-11-24
JPS5274010A	1977-06-21
US4142850A	1979-03-06
FR1449751A	1966-05-06

TONGSHE INTELLECTUAL PROPERTY AGENCY (CN)

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