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A hollow false twist processed yarn and its production method

A hollow and false-twisting technology, applied in hollow filament manufacturing, rayon manufacturing, filament/thread forming, etc., can solve the problems of insufficient bulkiness of fabrics, low stretch recovery rate, poor hand feeling, etc., and achieve good fluffy effect, High heat resistance, good dyeing effect

Inactive Publication Date: 2016-11-23
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the fiber adopts the twisting process, the stretch recovery rate of the processed yarn is lower than 2%, which is almost close to the effect of the original yarn. The fabric has insufficient bulkiness and poor hand feeling, and the application area still has certain limitations.

Method used

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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  • A hollow false twist processed yarn and its production method
  • A hollow false twist processed yarn and its production method
  • A hollow false twist processed yarn and its production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] After vacuum drying, MPO slices with a total content of 5 mol% of copolyester diols with a moisture content of less than 100ppm are passed through a screw extruder, and the temperature of each zone of the extruder is 275°C, 280°C, and 285°C to make it melt and flow into the metering pump, accurately metered and pressed into the assembly;

[0059] Use a hollow spinneret for spinning, the hole depth of the spinneret is 100mm, it is cooled by side blowing, the wind temperature is 20°C, the wind speed is 20m / min, the winding speed is set at 2500m / min, and the fineness is controlled at 160dtex / 36F. The hollow pre-oriented yarn POY was obtained.

[0060] The wound hollow pre-oriented yarn POY is stretched, the temperature of the first hot roll is 90°C, the temperature of the second hot roll is 130°C, the elongation ratio is 1.75, and the take-up speed is 800m / min to obtain a hollow stretched yarn with a fineness of 95dtex / 36F.

[0061] False-twisting the wound hollow stretch...

Embodiment 2

[0063] After vacuum drying, MPO slices with a total content of 5 mol% of copolyester diols with a moisture content of less than 100ppm are passed through a screw extruder, and the temperature of each zone of the extruder is 275°C, 280°C, and 285°C to make it melt and flow into the metering pump, accurately metered and pressed into the assembly;

[0064] Use a hollow spinneret for spinning, the hole depth of the spinneret is 100mm, it is cooled by side blowing, the wind temperature is 20°C, the wind speed is 20m / min, the winding speed is set at 2500m / min, and the fineness is controlled at 160dtex / 36F. The hollow pre-oriented yarn POY was obtained.

[0065] The wound hollow pre-oriented yarn POY is stretched, the temperature of the first hot roll is 90°C, the temperature of the second hot roll is 130°C, the magnification is 1.75, and the take-up speed is 800m / min to obtain a hollow stretched yarn with a fineness of 95dtex / 36F.

[0066] False-twist the wound hollow stretched yar...

Embodiment 3

[0068] After vacuum drying, MPO slices with a total content of 5 mol% of copolyester diols with a moisture content of less than 100ppm are passed through a screw extruder, and the temperature of each zone of the extruder is 275°C, 280°C, and 285°C to make it melt and flow into the metering pump, accurately metered and pressed into the assembly;

[0069] Use a hollow spinneret for spinning, the hole depth of the spinneret is 100mm, it is cooled by side blowing, the wind temperature is 20°C, the wind speed is 20m / min, the winding speed is set at 2500m / min, and the fineness is controlled at 160dtex / 36F. The hollow pre-oriented yarn POY was obtained.

[0070] The wound hollow pre-oriented yarn POY is stretched, the temperature of the first hot roll is 90°C, the temperature of the second hot roll is 130°C, the magnification is 1.75, and the take-up speed is 800m / min to obtain a hollow stretched yarn with a fineness of 95dtex / 36F.

[0071] False-twist the wound hollow stretched yar...

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Abstract

The invention discloses a hollow false twist processed yarn and a production method thereof. Fibre-forming polymer is modified copolyester which is copolymerized by third monitors, wherein the third monitors are aliphatic series dihydric alcohols with side chains and the carbon atom number of the aliphatic series dihydric alcohols is less than six. The content of the firbre-forming polymer accounts for 1-30 mol % of the overall contents of copolyester dihydric alcohols. A continuous through hollow portion is formed in the center of the processed yarn. Hollow rate is 2%-8%. The section of the hollow portion of the false twist processed yarn is triangular shaped after the false twist processed yarn is handled by damp heat or dry heat. The hollow rate is 15%-35%. Pre-oriented yarn (POY) or full-oriented yarn (FOY) are obtained at first under a conventional spinning process condition. Then, low temperature false twist process is conducted to the POY or the FOY so that the hollow false twist processed yarn is obtained. The fibres can be widely applied in the fields of civilian clothing, sport clothing, occupational clothing, indoor decoration, beddings, footgear, medical supplies, advanced fillers and the like.

Description

technical field [0001] The invention relates to a hollow false twist processed yarn and a production method thereof. Background technique [0002] With the improvement of social and economic development level and people's living standards, the requirements for clothing are getting higher and higher. At the same time, with the improvement of various manufacturing technologies, the production of fibers with various cross-sectional shapes that meet people's requirements has also become a reality. Among them, a lightweight and heat-retaining fiber material has gradually become the latest trend. Because of its light weight, good warmth retention, moisture absorption and perspiration and other excellent properties, it is more and more popular among people. The products are widely used in civil clothing, sports clothing, professional clothing, interior decoration, bedding, footwear, medical supplies and advanced fillers, etc. [0003] In order to achieve the effect of light weig...

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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Patent Type & Authority Patents(China)
IPC IPC(8): D02G1/02D01D5/38D01D5/24D01D5/253D01F6/84
Inventor 王长沙曹海兵藤森稔
Owner TORAY FIBER RES INST(CHINA) CO LTD
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