Preparation method of knitted fabric

A technology of knitted fabric and special-shaped fiber, which is applied in the field of fiber, can solve the problems of increased friction of cellulose fiber, poor wearing experience, and inability to arrive quickly, and achieve the effect of improving the ability to export moisture

Inactive Publication Date: 2020-04-21
深圳市宏翔新材料发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional knitted fabrics are generally woven with cotton or cotton mixed with other cellulose fibers. Cellulose fibers have good hygroscopicity. When the human body sweats a lot, it can quickly absorb the moisture on the surface of the human body, but the moisture that enters the fiber It is difficult to evaporate, because the hydrophilicity of cellulose fibers is too strong, and the migration resistance of water in the fibers is relatively large. After the side close to the skin absorbs water, it cannot reach the outside quickly, so it cannot evaporate quickly.
In addition, the friction between the cellulose fibers after water absorption increases, and the stretchability of the fabric decreases when wearing, which will lead to poor wearing experience.
[0003] In the prior art, the double-layer structure of the inner layer is generally designed to be hydrophobic and the outer layer is hygroscopic to achieve moisture absorption and quick drying of the fabric, especially for the control of the inner layer's hydrophobicity, choose hydrophobic fibers, or based on it. Hydrophobic finishing, but still limited efficiency
The overall effect of hydrophobicity is not long-lasting, and it is easy to fail after repeated friction and washing; the most common method is hydrophobic fibers with special-shaped cross-sections, but the grooves of general special-shaped cross-section fibers are on the same side, and their moisture-conducting efficiency is still low. To be further improved

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 fabric
  • Preparation method of knitted fabric
  • Preparation method of knitted fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A kind of preparation method of knitted cloth, its steps are as follows:

[0049] (1) The preparation process of shaped fiber is as follows:

[0050] According to the FDY process, using the composite spinning assembly located in the assembly spinning box, PET melt (intrinsic viscosity is 0.58dL / g) and PTT melt (intrinsic viscosity is 1.19dL / g) with a mass ratio of 40:60 ) after distribution, after extruding from the spinneret holes on the same spinneret to obtain FDY filaments, perform a relaxation heat treatment at a temperature of 112°C for 24 minutes to obtain special-shaped fibers;

[0051] Such as Figure 1-7 As shown, the composite spinning assembly includes the first distribution plate, the second distribution plate, the third distribution plate and the spinneret that fit closely from top to bottom; the first distribution plate is provided with a flow for the PTT melt to flow through Channel A1 and flow channel B1 for PET melt to flow through; the second distri...

Embodiment 2

[0059] A kind of preparation method of knitted cloth, its steps are as follows:

[0060] (1) The preparation process of shaped fiber is as follows:

[0061] According to the FDY process, using the composite spinning assembly located in the assembly spinning box, PET melt (intrinsic viscosity is 0.58dL / g) and PTT melt (intrinsic viscosity is 1.18dL / g) with a mass ratio of 45:55 ) after distribution, after extruding from the spinneret holes on the same spinneret to obtain FDY filaments, perform relaxation heat treatment at a temperature of 91°C for 26 minutes to obtain special-shaped fibers;

[0062] The composite spinning assembly includes the first distribution plate, the second distribution plate, the third distribution plate and the spinneret that fit closely from top to bottom; the first distribution plate is provided with flow channels A1 and Flow channel B1 for PET melt to flow through; the second distribution plate is provided with outer ring groove O2, middle ring groo...

Embodiment 3

[0070] A kind of preparation method of knitted cloth, its steps are as follows:

[0071] (1) The preparation process of shaped fiber is as follows:

[0072] According to the FDY process, using the composite spinning assembly located in the assembly spinning box, PET melt (intrinsic viscosity is 0.55dL / g) and PTT melt (intrinsic viscosity is 1.1dL / g) with a mass ratio of 45:55 ) after distribution, after extruding from the spinneret holes on the same spinneret to obtain FDY filaments, perform relaxation heat treatment at a temperature of 90°C for 30 minutes to obtain special-shaped fibers;

[0073] The composite spinning assembly includes the first distribution plate, the second distribution plate, the third distribution plate and the spinneret that fit closely from top to bottom; the first distribution plate is provided with flow channels A1 and Flow channel B1 for PET melt to flow through; the second distribution plate is provided with outer ring groove O2, middle ring groov...

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 fabric. The preparation method comprises the following steps of respectively taking cotton fibers as a surface yarn raw material, profiled fibers as an intermediate yarn raw material and fine denier "H"-shaped PET fibers as a ground yarn raw material, and carrying out three-wire plaiting weaving and antibacterial finishing to prepare the knitted fabric. The preparation process of the profiled fibers comprises the following steps of distributing a PET melt and a PTT melt according to an FDY process, carrying out extruding from spinneret orifices in the same spinneret plate to prepare FDY yarns, and carrying out relaxation heat treatment to obtain the profiled fibers, wherein the spinneret orifices are "H"-shaped spinneret orifices, each "H" shape is composed of a vertical line X, a vertical line Y and a transverse line Z, the vertical line X comprises an X1 section and an X2 section, and the vertical line Y comprises a Y1 sectionand a Y2 section; and the distribution means to control the PTT melt to flow through the X2 section and the Y1 section and control the PET melt to flow through the X1 section, the Y2 section and the transverse line Z. The knitted fabric with high moisture conductivity is prepared by adopting the simple preparation method.

Description

technical field [0001] The invention belongs to the field of fiber technology and relates to a preparation method of knitted fabric. Background technique [0002] Traditional knitted fabrics are generally woven with cotton or blended with other cellulose fibers. Cellulose fibers have good hygroscopicity. When the human body sweats a lot, it can quickly absorb the moisture on the surface of the human body, but the moisture that enters the fiber It is difficult to evaporate. The reason is that the hydrophilicity of cellulose fibers is too strong, and the migration resistance of water in the fibers is relatively large. After the side close to the skin absorbs water, it cannot reach the outside quickly, so it cannot evaporate quickly. In addition, the friction between the water-absorbed cellulose fibers increases, and the stretchability of the fabric decreases when wearing, which will lead to a poor wearing experience. [0003] In the prior art, the double-layer structure of th...

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): D04B1/00D04B1/14D04B1/16D01D5/253D01D1/09D01D5/30D01D10/02D06M15/263D06M101/32D06M101/06
CPCD01D1/09D01D5/253D01D5/30D01D10/02D04B1/00D04B1/14D04B1/16D06M15/263D06M16/00D06M2101/06D06M2101/32D10B2201/02D10B2331/04
Inventor 李昱瑶林泽慧
Owner 深圳市宏翔新材料发展有限公司
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