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Low temperature dyeing process of nylon/polyester elastic knitted fabric

A low-temperature dyeing technology for knitted fabrics, applied in dyeing, textiles, and papermaking, can solve the problems of scrapped fabrics, poor color fastness of fabrics, and high dyeing costs, so as to reduce the risk of scrapping, improve color fastness, and reduce dyeing costs Effect

Active Publication Date: 2017-03-08
上海云鼎纺织品股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This two-bath dyeing process has high dyeing costs, and the color fastness of the fabric is poor. Moreover, if the dyeing process is slightly improperly controlled, the nylon will be oxidized and brittle at high temperature, resulting in the scrapping of the fabric.
[0003] At present, in the face of the difficulties in dyeing nylon / polyester elastic knitted fabrics, most enterprises focus on improving the dyeing process or using new auxiliaries, but these methods have not fundamentally solved the problem

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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  • Low temperature dyeing process of nylon/polyester elastic knitted fabric
  • Low temperature dyeing process of nylon/polyester elastic knitted fabric
  • Low temperature dyeing process of nylon/polyester elastic knitted fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Fabric: 70D / 48F Nylon 6+70D / 36F low temperature cationic modified polyester DTY+40D OP spandex jersey

[0026] 2. The process flow is as follows:

[0027] Weaving→Cylinder matching→Shrinking→Dehydration→Open width→Pre-setting→Dyeing→Dehydration→Expanding→Finished product shaping→Inspection→Packaging

[0028] 3. The low-temperature dyeing process of nylon / polyester elastic knitted fabric of the present invention, the key points of the process are as follows:

[0029] (1) For the polyester yarn in the raw material, low-temperature cationic modified polyester DTY (that is, low-temperature cationic DTY) is used to replace the original ordinary polyester DTY;

[0030] (2) Low-temperature dyeing one-bath processing formula (color 17-2127TCX):

[0031]

[0032] (Wherein, the X and Y values ​​are determined according to the different colors to be finally dyed) (2) Post-treatment process formula:

[0033] Polyester reduction cleaning

[0034] Acid reduction cleaning ag...

Embodiment 2

[0050] 1. Fabric: 100D / 48F Nylon 6+50D / 36F low-temperature cationic modified polyester DTY+40D OP reverse-wrapped single-sided fleece

[0051] 2. The process flow is as follows:

[0052] Weaving→Cylinder matching→Shrinking→Dehydration→Open width→Pre-setting→Dyeing→Dehydration→Expanding→Styling and drying→Styling plus fluffing agent→Napping→Centering→Carding→Shearing→Finished product shaping→Inspection→Packaging

[0053] 3. The low-temperature dyeing process of nylon / polyester elastic knitted fabric of the present invention, the key points of the process are as follows:

[0054] (1) The polyester yarn in the raw material adopts low-temperature cationic modified polyester DTY (this low-temperature cationic modified polyester DTY is purchased from Shenghong Group Co., Ltd.) to replace the original common polyester DTY;

[0055] (2) Low-temperature dyeing one-bath processing formula (color 17-2127 TCX):

[0056]

[0057] (3) Post-treatment process formula:

[0058] Polyester...

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 discloses a low-temperature dyeing process of nylon / Dacron elastic knitted fabric. The process comprises the following steps: selecting a low-temperature cationic modified polyester yarn dyed at low temperature as a polyester yarn in raw materials, carrying out dyeing processing on nylon with acid dyes in a same dye bath jar by employing a low-temperature bath dyeing processing process; simultaneously carrying out dyeing processing treatment on polyester with cationic dyes; and in an after treatment process after dyeing, carrying out reduction cleaning on the polyester with an acid reductive cleaning agent. According to the low-temperature dyeing process, by virtue of low-temperature one-bath dyeing, the color fastness can be improved by about 0.5-1.5 grades; the dyeing time can be reduced by over 50%; the water and energy are saved by about 50%; the dyeing cost is saved by about 50%; the nylon does not generate an oxidation phenomenon basically; the reproducibility of the process is relatively good; and the dyeing process has great popularization value.

Description

technical field [0001] The invention belongs to the technical field of dyeing and finishing of knitted fabrics, and relates to a low-temperature dyeing process of nylon / polyester elastic knitted fabrics. Background technique [0002] Nylon / polyester elastic knitted fabrics are welcomed by consumers due to their unique feel, style and performance. However, nylon / polyester elastic knitted fabrics have always had difficulties in the dyeing and finishing stage, which discourages many enterprises. For the dyeing of existing nylon / polyester elastic knitted fabrics, since the dyeing mechanism and temperature of polyester and nylon are different, nylon / polyester elastic knitted fabrics generally adopt a two-bath dyeing process, that is, first use it under high temperature conditions of 130°C. Disperse dyes are used to dye polyester, and acid dyes are used to dye nylon at 100°C. This two-bath dyeing process has high dyeing costs and poor color fastness of the fabric. Moreover, if t...

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): D06P3/87D06P5/02D06P5/04
Inventor 赵国平张丹高永峰
Owner 上海云鼎纺织品股份有限公司
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