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Preparation method of shoe upper fabric

A technology for shoe uppers and fabrics, applied in the field of textile fabrics, can solve problems such as poor air permeability and damage to mechanical properties, and achieve the effects of low cost, good dimensional stability, and good air permeability

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

[0004] The present invention provides a method for preparing shoe upper fabrics, with the purpose of solving the problems in the prior art that the mechanical properties of PU shoe upper fabrics are greatly damaged and the air permeability is poor after washing or high-temperature heat treatment.

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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Examples

Experimental program
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Effect test

Embodiment 1

[0038] A preparation method for shoe upper fabric, the steps are as follows:

[0039] (1) Preparation of self-curling elastic yarn:

[0040] Extrude the PBT melt with an intrinsic viscosity of 1.1dL / g from the three-lobed spinneret hole on the spinneret and cool it with a ring blower. FDY filaments are obtained according to the FDY process, and then self-curling elastic filaments are obtained through relaxation heat treatment. ;

[0041]The ratio of the length of the three lobes of the same three-lobed spinneret hole is 1.0:1.1:2.5, the ratio of the corresponding width of the three lobes is 1:1.6:1, the ratio of the length and width of the shortest lobe is 3.5:1, adjacent The angle between the centerlines of the two lobes is 120°; the shape and size of the three lobes of different three-lobed spinneret holes are the same; there is a circle of equidistantly distributed three-lobed spinneret holes on the spinneret plate, and the number is 24 One, the pointing direction of the ...

Embodiment 2

[0050] A preparation method for a shoe upper fabric, the steps are as follows:

[0051] (1) Preparation of self-curling elastic yarn:

[0052] Extrude the PBT melt with an intrinsic viscosity of 1.1dL / g from the three-lobed spinneret hole on the spinneret and cool it with a ring blower. FDY filaments are obtained according to the FDY process, and then self-curling elastic filaments are obtained through relaxation heat treatment. ;

[0053] The ratio of the length of the three lobes of the same three-lobed spinneret hole is 1.0:1.1:2.5, the ratio of the corresponding width of the three lobes is 1:1.8:1, and the ratio of the length and width of the shortest lobe is 3.5:1, adjacent The angle between the center lines of the two leaves is 120°; the spinneret plate is provided with a circle of equidistantly distributed trilobal spinneret holes, the number is 24, and the direction of leaf I of one of the trilobal spinneret holes is Deviate from the center of the circle by 12°, take...

Embodiment 3

[0062] A preparation method for a shoe upper fabric, the steps are as follows:

[0063] (1) Preparation of self-curling elastic yarn:

[0064] Extrude the PBT melt with an intrinsic viscosity of 1.15dL / g from the three-lobed spinneret hole on the spinneret and cool it with a ring blower. FDY filaments are produced according to the FDY process, and then self-curling elastic filaments are obtained through relaxation heat treatment. ;

[0065] The ratio of the length of the three lobes of the same three-lobed spinneret hole is 1.0:1.2:2.5, the ratio of the corresponding width of the three lobes is 1:1.9:1, the ratio of the length and width of the shortest lobe is 3.9:1, adjacent The angle between the centerlines of the two lobes is 120°; the shape and size of the three lobes of different three-lobed spinneret holes are the same; there is a circle of equidistantly distributed three-lobed spinneret holes on the spinneret plate, and the number is 24 One, the pointing direction of ...

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 shoe upper fabric. The preparation method comprises the steps as follows: (1) knitting main yarn and hot melt yarn by an air-covered yarn technology ona flat knitting machine to form special yarn for heelpieces; knitting self-curling elastic yarn to form special yarn for shoe middle surfaces; and knitting main yarn and self-curling elastic yarn toform special yarn for shoe toe surfaces by the air-covered yarn technology; (2) knitting the special yarn for shoe heelpieces, special yarn for shoe middle surfaces and special yarn for shoe toe surfaces to form an integrated flat knitted shoe uppers on the flat knitting machine; and (3) performing steaming setting treatment on the integrated flat knitted shoe uppers to obtain shoe upper fabric, wherein the self-curling elastic yarn is prepared as follows: after a PBT melt is extruded from a trefoil spinneret orifice with three leaves in different lengths and widths on a spinneret and cooled by circular blowing, and FDY is prepared by an FDY process and then subjected to heat treatment without tension. The method is simple and easy to implement, heat damage to fabric is small, and the prepared fabric has better size stability after water washing and good breathability.

Description

technical field [0001] The invention belongs to the technical field of textile fabrics, and relates to a preparation method of shoe upper fabrics. Background technique [0002] The fabrics of sports shoes include PVC, PU, ​​nubuck, microfiber, natural leather, mesh and so on. Among them, PU fiber is soft, elastic and feels good. It is the most commonly used material in the market. However, whether it is heat setting or other high temperature treatment, the microstructure of PU will be changed more or less, and the change of microstructure will cause the performance damage of PU fiber. From the perspective of fabric, it will make the fabric thinner and thinner; From the perspective of yarn, the spandex content per unit length decreases, and its elasticity will decrease; in addition, the dimensional stability of the fabric after washing will also deteriorate. In addition, sports shoe fabrics are less breathable due to their higher fabric density. [0003] Therefore, it is of...

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): D04B1/20D04B1/16D06C7/02D01D5/253D01D5/23D01D10/02D01D5/08
CPCD01D5/08D01D5/23D01D5/253D01D10/02D04B1/16D04B1/20D06C7/02D10B2201/02D10B2331/02D10B2331/04D10B2401/061D10B2501/043
Inventor 魏存宏丁霞张元华尹立新
Owner JIANGSU HENGLI CHEM FIBER
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