Soft moisture-absorbing curly short fiber and preparation method and application thereof

A short fiber and crimping technology, which is applied in the field of fiber, soft and hygroscopic curly short fiber and its preparation, can solve the problems of low moisture absorption, difficult spinning, poor cohesion, etc., and achieve the effect of easy crimping, improving yield and efficiency

Active Publication Date: 2019-06-28
CATHAY R&D CENT CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned difficult spinning problems caused by polyester staple fibers due to their high rigidity, low moisture absorption rate and poor cohesion, the present invention provides a soft hygroscopic curly staple fiber and its preparation method and application. The soft hygroscopic curly staple fiber It overcomes the shortcomings of existing short fibers and improves spinning efficiency and yield

Method used

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  • Soft moisture-absorbing curly short fiber and preparation method and application thereof

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Effect test

Embodiment 1

[0051] The preparation method of the soft moisture-absorbing crimped staple fiber of this embodiment is as follows:

[0052] 1) The polyamide 56 melt and the polyethylene terephthalate melt are merged in the composite spinning assembly through the respective melt pipelines, and extruded through the eccentric composite spinneret, and cooled to form the spun yarn;

[0053] Among them, the ratio of skin-core components is accurately adjusted by a metering pump, the content of polyamide 56 in the skin layer is 25% by weight, and the content of polyethylene terephthalate in the core layer is 75% by weight;

[0054] The number of holes in the eccentric composite spinneret is 800f, the hole diameter of the spinneret is 0.25mm, the stretch ratio of the spinneret is 80, the cooling method is ring blowing cooling, the ring blowing temperature is 24℃, and the ring blowing speed is 0.8m / s.

[0055] 2) Post-processing the above-mentioned nascent silk to obtain soft moisture-absorbing crimped stap...

Embodiment 2

[0067] The preparation method of the soft moisture-absorbing crimped staple fiber of this embodiment is as follows:

[0068] 1) The polyamide 56 melt and the polytrimethylene terephthalate melt are merged in the composite spinning assembly through the respective melt pipes, and are extruded through the parallel composite spinneret and cooled to form the spun yarn;

[0069] Among them, the proportion of parallel components is accurately adjusted by a metering pump, the content of the first parallel component polyamide 56 is 50wt%, and the content of the second parallel component polytrimethylene terephthalate is 50wt%;

[0070] The number of holes in the parallel composite spinneret is 1000f, the diameter of the spinneret is 0.3mm, the stretch ratio of the spinneret is 100, the cooling method is ring blowing cooling, the ring blowing temperature is 25℃, and the ring blowing speed is 0.9m / s.

[0071] 2) Post-processing the above-mentioned nascent silk to obtain soft moisture-absorbing ...

Embodiment 3

[0077] The preparation method of the soft moisture-absorbing crimped staple fiber of this embodiment is as follows:

[0078] 1) The polyamide 56 melt and the polybutylene terephthalate melt are merged in the composite spinning assembly through the respective melt pipes, and are extruded through the parallel composite spinneret and cooled to form the spun yarn;

[0079] Among them, the proportion of parallel components is accurately adjusted by a metering pump, the content of the first parallel component polyamide 56 is 40wt%, and the content of the second parallel component polybutylene terephthalate is 60wt%;

[0080] The number of holes in the parallel composite spinneret is 700f, the diameter of the spinneret is 0.28mm, the stretching ratio of the spinneret is 80, the cooling method is ring blowing cooling, the ring blowing temperature is 23℃, and the ring blowing speed is 0.8m / s.

[0081] 2) Post-processing the above-mentioned nascent silk to obtain soft moisture-absorbing crimpe...

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Abstract

The invention provides a soft moisture-absorbing curly short fiber and a preparation method and application thereof. The soft moisture-absorbing curly short fiber comprises, by mass, 10-50% of polyamide 5X and 50-90% of polyester. By means of the preparation method, the soft moisture-absorbing curly short fiber capable of improving the spinning efficiency and increasing the rate of finished products is obtained at a low cost in a simple process.

Description

Technical field [0001] The invention relates to fiber technology, in particular to a soft moisture-absorbing crimped short fiber and a preparation method and application thereof, and belongs to the technical field of textiles. Background technique [0002] Polyester fiber has the advantages of stiffness, high strength, large modulus, solvent resistance, heat resistance, fatigue resistance, etc., and is widely used in civil and industrial materials. However, polyester fiber as a textile material also has some shortcomings, mainly because the polyester macromolecular chains are closely arranged, the crystallinity and orientation are high, and the lack of polar groups on the molecular chain results in the softness and moisture absorption of the prepared fibers. Poor performance and dyeability, easy to generate static electricity, the fabric is easy to pilling, and polyester fiber has poor wear resistance. [0003] Among them, polyester staple fiber is widely used in blended yarns, bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/12D01F8/14D01D5/098D01D5/30D02G1/00D02J13/00D02G3/04
Inventor 孙朝续徐晓辰秦兵兵刘修才
Owner CATHAY R&D CENT CO LTD
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