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Method for producing cationic type composite cotton yarn imitation threads

A cationic and production method technology, applied in the field of textile fibers, can solve the problems of poor anti-pilling performance, insufficient compactness, high production cost, etc., and achieve the effects of reducing production cost, improving production efficiency and shortening the processing flow

Active Publication Date: 2013-09-25
杭州逸暻化纤有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent uses conventional semi-dull and full-dull polyesters. Compared with cationic modified polyesters, its dyeability, moisture absorption, and anti-pilling properties are worse, so the bionic properties are not as good as cationic polyesters; secondly, the patent uses The two-step method is to obtain POY\FDY plied yarn through subsequent compounding. Compared with the spinning one-step compounding method, this production method has low efficiency and high production cost; again, the patent design of the FDY cross-section into a "cross" shape is not conducive to Moisture absorption and perspiration of the composite yarn, because FDY will shrink in the core layer after processing and has less contact with the skin. This patent designs POY into a "cross" cross-section, which is coated on the surface of the composite yarn after processing, which is more conducive to the composite yarn Moisture absorption and perspiration; Finally, the POY\FDY composite fiber prepared by subsequent compounding is difficult to cohere tightly, which has a certain impact on the subsequent false twisting process. The appearance of the prepared composite cotton-like yarn is relatively loose and not compact enough

Method used

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  • Method for producing cationic type composite cotton yarn imitation threads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Cationic polyester (CDP) with an intrinsic viscosity of 0.64dl / g is used as the raw material, and the molar content of the modified unit bishydroxyethyl isophthalate-5-sulfonate (SIPE) relative to terephthalic acid is 5%. TiO 2 The content is 0.3%. Through the POY\FDY composite fiber one-step spinning equipment, 147dtex / 108f POY\FDY composite fiber (ITY) is spun, and the elongation at break is 28%. Among the composite fibers, POY is 83dtex / 72f, the single filament fineness is 1.2dtex, and the cross section is circular; FDY is 64dtex / 36f, the single filament fineness is 1.8dtex, and the cross section is circular; the mass ratio of POY component to FDY component is 1:0.77 .

[0026] False twist the above ITY on a 33H texturing machine, control the draft ratio to 1.05, the temperature of the first hot box is 140°C, the temperature of the second hot box is 130°C, the processing speed is 400m / min, and the pre-screen pressure is 1.8MPa.

[0027] The cationic composite cotto...

Embodiment 2

[0029] The normal pressure dyeable cationic polyester (ECDP) with an intrinsic viscosity of 0.66dl / g and modified units of SIPE and polyether (PEG2000) is used as the raw material, wherein the molar content of SIPE relative to terephthalic acid is 3%, and PEG2000 4% relative to the weight of terephthalic acid, TiO 2The content is 2.5%. Through the POY\FDY composite fiber one-step spinning equipment, 300dtex / 144f POY\FDY composite fiber (ITY) is spun, and the elongation at break is 36.5%. Among the composite fibers, POY is 150dtex / 72f, single filament fineness is 2.1dtex, and cross-section is quatrefoil; FDY is 150dtex / 72f, single filament fineness is 2.1dtex, and cross-section is pentagonal; the mass ratio of POY component to FDY component is 1 :1.

[0030] False twist the above ITY on a 33H texturing machine, control the draft ratio to 1.1, the temperature of the first hot box is 160°C, the temperature of the second hot box is 140°C, the processing speed is 350m / min, and the...

Embodiment 3

[0033] Cationic polyester (CDP) with an intrinsic viscosity of 0.69dl / g is used as the raw material, and the molar content of the modified unit bishydroxyethyl isophthalate-5-sulfonate (SIPE) relative to terephthalic acid is 1.5%. TiO 2 The content is 1.8%. Through the POY\FDY composite fiber one-step spinning equipment, 100dtex / 72f POY\FDY composite fiber (ITY) is spun, and the elongation at break is 40%. Among the composite fibers, POY is 45dtex / 48f, single filament fineness is 0.93dtex, and the cross-section is pentalobal; FDY is 55dtex / 24f, single filament fineness is 2.3dtex, and the cross-section is circular; the mass ratio of POY component to FDY component is 1: 1.2.

[0034] False twist the above ITY on a 33H texturing machine, control the draft ratio to 1.2, the temperature of the first hot box is 150°C, the temperature of the second hot box is 100°C, the processing speed is 480m / min, and the pre-wire pressure is 1.4MPa.

[0035] The cationic composite cotton-like y...

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Abstract

The invention relates to the field of textile fibers and provides a method for producing cationic type composite cotton yarn imitation threads to solve the problems of cotton fiber imitation polyester filaments. Cationic polyesters are used as raw materials to be produced into cationic POY / FDY (ITY) composite fibers through a POY / FDY composite fiber one-step spinning device, and the POY / FDY (ITY) composite fibers are subjected to false twisting machining to be produced into cationic composite cotton yarn imitation threads. The cotton yarn imitation threads produced through the method are provided with appearance characteristics of cotton yarn and good in hygroscopicity, dyeing property and pilling resistance.

Description

technical field [0001] The invention relates to the field of textile fibers, in particular to a production method of cationic composite cotton-like yarn. Background technique [0002] Cotton-like polyester fiber is a major topic that current polyester fiber developers are working hard to promote. It is beneficial to solve the shortage of cotton supply and demand and improve the differentiation level of polyester fiber. To achieve polyester fiber imitation cotton, it is necessary to imitate the appearance and performance of cotton yarn. Therefore, the cotton yarn feel, tightness, gloss, hygroscopicity, anti-pilling and dyeing properties of cotton-like polyester fibers are all things that need to be considered. [0003] As far as shape imitation is concerned, some researches in the current market are realized by false twisting POY\FDY composite fibers. For example, the Chinese patent with application number 201110224539.1 discloses a super-imitation cotton polyester filament...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D02G1/02D01F6/92D01F1/10D01D5/253
Inventor 缪国华孙建钢王炳辉张庆喜
Owner 杭州逸暻化纤有限公司
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