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Preparation method for non-equal convergent-point high-elasticity composite yarn

A technology of composite yarn and converging point, which is applied in the direction of yarn, textile and papermaking, etc., can solve the problems of fabric elastic loss, unstable structure, unsatisfactory, etc., and achieve the effect of improved elasticity, simple method, and enhanced adaptability

Inactive Publication Date: 2014-08-06
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although spandex has been used to increase elasticity and anti-wrinkle, the elasticity of the fabric disappears and the structure is unstable when the deformation is large, and it cannot meet the requirements of medical, sports, home textiles, comfortable and functional clothing, plastic and orthopedic underwear that require high elasticity. requirements

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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  • Preparation method for non-equal convergent-point high-elasticity composite yarn
  • Preparation method for non-equal convergent-point high-elasticity composite yarn
  • Preparation method for non-equal convergent-point high-elasticity composite yarn

Examples

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preparation example Construction

[0040] A method for preparing high-elastic composite yarns with non-equal convergence points, which adopts adding a positioning tension disc for controlling the position and tension of elastic filaments (elastic yarns) on an ordinary ring spinning frame, and adding a feeding tension disc in an equal tension mode. The holding rod for the elastic yarn and two strand positioners used to control the position of the staple strands respectively; and the feeding of the two staple strands and the elastic strands in a three-axis system and the addition of non-equal collection points are implemented. Twist composite, and finally spun into a high-elastic yarn core with a double-helix structure as the core layer; the outer layer is a high-elastic composite yarn 8 that is covered with short fiber strands and has a freely stretchable pitch, such as figure 1 , figure 2 , image 3 shown.

[0041] The preparation method of the non-equal convergence point high elastic composite yarn, the spe...

Embodiment 1

[0048] Example 1: Spinning cotton+spandex filament non-equal convergence point high elastic composite yarn

[0049] Select two tubes of cotton roving and one tube of spandex filament to carry out non-equal convergence point composite spinning of triaxial system; triaxial raw material: the composite mass ratio of cotton / cotton / spandex yarn is 40 / 40 / 20, and the above-mentioned composite spinning Yarn method, the spandex yarn is fed from one shaft with a tension of 8cN, and the enveloping angle with the holding rod is 120°+0° plus the number of turns is zero; two bundles of cotton staple fibers are fed from the other two shafts and Spandex yarns are fed in with an interaxial distance of 8mm and 4mm; the twist of spinning is 120 twists / 10cm; the spandex yarns and one of the cotton staple strands that exit the nip of the front roller are first compounded at point A to form a double-helix yarn segment, and then This yarn segment is compounded at point B with another cotton staple fi...

Embodiment 2

[0050] Example 2: Spinning spun silk + Lycra non-equal convergence point high elastic composite yarn

[0051] Select two cylinders of spun silk roving and one cylinder of Lycra filaments to carry out three-axis non-equal convergence point composite spinning; three-axis raw materials: composite mass ratio of spun silk staple fiber / spun silk staple fiber / spandex yarn is 35 / 35 / 30, using the above-mentioned composite spinning method, the Lycra silk is fed from one axis with a tension of 8cN, and the enveloping angle with the holding stick is 100°+0° plus the number of turns is zero; the spun silk staple fiber is spun The natural tension of the yarn drafting is fed from the other two shafts with a distance of 8mm and 4mm from the Lycra yarn; the twist of the spinning yarn is 120 twists / 10cm, and the Lycra yarn coming out of the nip of the front roller and one of the spun silk staple fibers First compound at point A to form a yarn segment with a double helix structure, and then the...

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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Abstract

The invention relates to a preparation method for a non-equal convergent-point high-elasticity composite yarn and belongs to the technical field of weaving composite yarn spinning. The preparation method for the non-equal convergent-point high-elasticity composite yarn is characterized in that: a positioning tension disk for controlling the position and the tensile force of an elastic filament is arranged on the common ring spinning machine; a holding roller for feeding stretch yarn in an isostension mode and two strip positioner for controlling the position of short fiber strips are arranged on the common ring spinning machine; the two short fiber strips and the stretch yarn are fed in a three-axis mode and twisted and compounded at the non-equal convergent point to finally spin the high-elasticity composite yarn, of which the core layer is a high-elasticity yarn core having a double helix structure; and the outer layer is wrapped by the short fiber strips and contracted freely. By the method, the high-elasticity composite yarn with high elasticity and a stable structure can be obtained.

Description

technical field [0001] The invention relates to a method for preparing a high-elastic composite yarn with non-equal convergence points, belonging to the technical field of textile composite yarn spinning. Background technique [0002] Short fibers such as cotton, hemp, and viscose are widely used in the field of clothing due to their good hygroscopic properties, so short fiber yarns such as cotton and hemp are often used as clothing yarns. However, due to the low elasticity of this type of fiber itself, its application field is limited, and certain methods need to be adopted to improve the elasticity of staple fiber yarns such as cotton and hemp. Spandex yarn, similar to the Lycra elastic yarn of DuPont in the United States, the DOW XLA polyolefin-based elastic fiber of Dow Chemical Company in the United States, etc., although it has good elasticity, its elongation can reach 450-700%, but its wearing performance poor. Moreover, the price of spandex filament itself is relat...

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): D01H13/04D02G3/32D01H13/10
Inventor 于伟东蔡光明吴济宏石先军柯贵珍
Owner WUHAN TEXTILE UNIV
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