Preparation method of knitted underwear fabric

A technology of underwear fabrics and raw materials, applied in the field of textile fabrics, can solve the problems of moisture absorption and quick-drying and poor dimensional stability, and achieve the effect of soft and delicate texture, good elasticity and good comfort

Active Publication Date: 2020-04-10
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for preparing knitted underwear fabrics, with the purpose of solving the problem of poor moisture absorption and quick-drying properties and dimensional stability of underwear fabrics in the prior art due to the addition of spandex

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 of knitted underwear fabric
  • Preparation method of knitted underwear fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A preparation method of knitted underwear fabric, the steps are as follows:

[0042] (1) Preparation of elastic yarn:

[0043] The PTT melt with an intrinsic viscosity of 1.02dL / g is extruded from the trilobal spinneret hole on the spinneret and cooled by ring blowing, and the FDY filament is obtained according to the FDY process, and then the elastic filament is obtained by relaxation heat treatment;

[0044] The three leaves of the same three-lobed spinneret hole are leaf I, leaf II, and leaf III. The angle α between leaf I and leaf II is 70°, and the angle β between leaf II and leaf III is 110°. The ratio of length of leaf II and leaf III is 1.0:1.5:2.0, the ratio of width of leaf I, leaf II and leaf III is 1.0:1.6:1.0, and the ratio of length to width of leaf I is 2.5:1; There is a circle of equidistantly distributed trilobal spinneret holes on the board, the number is 24, and the direction of the leaf I of one of the trilobal spinneret holes is deviated from the c...

Embodiment 2

[0052] A preparation method of knitted underwear fabric, the steps are as follows:

[0053] (1) Preparation of elastic yarn:

[0054] The PTT melt with an intrinsic viscosity of 1.05 dL / g is extruded from the trilobal spinneret hole on the spinneret and cooled by ring blowing, and the FDY filament is obtained according to the FDY process, and then the elastic filament is obtained by relaxation heat treatment;

[0055] The three leaves of the same three-lobed spinneret hole are leaf I, leaf II, and leaf III. The angle α between leaf I and leaf II is 89°, and the angle β between leaf II and leaf III is 123°. The ratio of length of leaf II and leaf III is 1.0:1.5:2.2, the ratio of width of leaf I, leaf II and leaf III is 1.0:1.8:1.0, and the ratio of length to width of leaf I is 2.9:1; The shape and size of the three leaves of the leaf-shaped spinneret holes are the same; the spinneret plate is provided with a circle of equally spaced three-lobe spinneret holes, and the number i...

Embodiment 3

[0063] A preparation method of knitted underwear fabric, the steps are as follows:

[0064] (1) Preparation of elastic yarn:

[0065] The PTT melt with an intrinsic viscosity of 1.11 dL / g is extruded from the trilobal spinneret hole on the spinneret and cooled by ring blowing, and the FDY filament is obtained according to the FDY process, and then the elastic filament is obtained by relaxation heat treatment;

[0066] The three leaves of the same three-lobed spinneret hole are leaf I, leaf II, and leaf III. The angle α between leaf I and leaf II is 83°, and the angle β between leaf II and leaf III is 118°. The ratio of length of leaf II and leaf III is 1.0:1.5:2.5, the ratio of width of leaf I, leaf II and leaf III is 1.0:1.9:1.0, and the ratio of length to width of leaf I is 2.8:1; The shape and size of the three leaves of the leaf-shaped spinneret holes are the same; the spinneret plate is provided with a circle of equally spaced three-lobe spinneret holes, and the number i...

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 of knitted underwear fabric. Taken as raw materials, 50 -60 Ne of cotton yarns and 75 -100 D of elastic filaments are knitted and then are sequentially subjected to pretreatment, dyeing, enzyme treatment, first softening treatment, drying, stacking, shaping, second softening treatment and drying and shaping to obtain the knitted underwear fabric. The preparation process of the elastic filaments comprises the following steps of extruding PTT melt from trilobal spinneret orifices with unequal lengths of three leaves, unequal widths thereof and unequal included angles between any two leaves in a spinneret plate (all the trilobal spinneret orifices are distributed in concentric circles, the leaves I of the trilobal spinneret orifices point to rotate for a certain angle at every other position on the same circle, and the rotation change of 360 degrees is completed in one circle), cooling the PTT melt by circular blowing, preparing FDY filamentsaccording to an FDY process, and then carrying out relaxation heat treatment to prepare stretch yarns. The preparation method of the knitted underwear fabric in the invention avoids the problem that the moisture absorption and quick drying performance and the dimensional stability of the knitted underwear fabric in the prior art are reduced due to containing of spandex.

Description

technical field [0001] The invention belongs to the technical field of textile fabrics, and relates to a preparation method of a knitted underwear fabric. Background technique [0002] With the improvement of people's quality of life, people's requirements for textiles are getting higher and higher, and the elastic design of high-end underwear fabrics is very important. The high elastic fabric has great elasticity, making the movement stretch and light. Because high-end underwear generally has high performance requirements for fabrics, such as elasticity, elastic elongation, fatigue resistance and recovery performance, there are very strict requirements, and high-end fabric designers often choose fabrics. Choose the right elastic side according to the end use of the fabric. [0003] In order to increase the elasticity of underwear, it is often necessary to add a certain amount of spandex into the fabric for blending, but the addition of spandex will reduce the moisture abs...

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 Applications(China)
IPC IPC(8): D04B1/20D04B21/18D01D5/253D01D5/23D01D5/08D01D10/02D06B3/18D06B3/30
CPCD01D5/08D01D5/23D01D5/253D01D10/02D04B1/20D04B21/18D06B3/185D06B3/30D10B2201/02D10B2331/04D10B2401/022D10B2401/061D10B2401/062D10B2501/02
Inventor 李文刚张伟王荣誉丁霞张元华
Owner JIANGSU HENGLI CHEM FIBER
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