Method for dyeing CDP/nylon/PU knitted fabrics

A technology of knitted fabrics and dyeing methods, applied in the field of dyeing technology, can solve the problems of incomplete dyeing, affecting the color fastness of fabrics, affecting the quality of fabrics, etc., to solve the problem of color fastness decline, reduce staining ability, and reduce adsorption effect of ability

Inactive Publication Date: 2014-03-12
上海缀菱纺织品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the different ionic properties of cationic and acidic dyes tend to form precipitates and adhere to the surface of the fabric during dyeing, seriously affecting the quality of the fabric, and both cationic and acidic dyes stain PU, which directly affects the final color fastness of the fabric. However, the one-bath dyeing of CDP / nylon / PU fabrics with cationic and acid dyes has not been fully realized
[0006] And also fail to carry out one-bath dyeing to the fabric of this kind of blended fabric in the existing technology and provide the scheme of feasibility

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
Comparison scheme
Effect test

Embodiment 1

[0029] Dyeing of 1# fabric

[0030] Using 84dtex-48f- CD-PET fiber, 66dtex-56f-Ny fiber, 22dtex PU fiber for weaving, the weight of gray cloth obtained: 145g / m 2 , door width: 150cm. The proportions of the three kinds of yarns are 55%, 33%, and 12% respectively.

[0031] Step 1. Put the fabric into the dye vat, add cold water and refined degreaser, control the liquor ratio between 1:20, raise the temperature to 80°C, keep it warm for 20 minutes, cool down to 60°C, and drain. Washing with water twice is over.

[0032] Step 2. Add cold water into the dyeing vat, and control the liquor ratio between 1:10 and 1:20, then add precipitation preventive agent, dyeing acid, sodium sulfate, anti-staining agent, cationic dye, and acid dye in sequence.

[0033] Step 3: Raise the temperature at 2°C / min to 70°C and keep it for 5min.

[0034] Step 4: After dyeing, raise the temperature to 110°C at 1°C / min and keep it warm for 30min.

[0035] Step 5. Drain the water when the temperature 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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PUM

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Abstract

The invention discloses a method for dyeing CDP / nylon / PU knitted fabrics. The method is characterized by comprising the following steps: 1, putting fabrics and cold water into a dye vat, and sequentially adding an anti-settling agent, dyeing acid, anhydrous sodium sulfate, an anti-set-off agent, cationic dyes and acid dyes; 2, raising the temperature to 70 DEG C at a speed of 2 DEG C per minute, and keeping the temperature for 5-10 minutes; 3, raising the temperature to 110-120 DEG C at a speed of 1 DEG C per minute, and keeping the temperature for 30-60 minutes; and 4, reducing the temperature to be 60 DEG C, and sequentially draining, soaping, color fixing and discharging the fabrics out of the vat. According to the dyeing scheme, a bath dyeing process can be performed on the CDP / nylon / PU knitted fabrics by using the cationic dyes and acid dyes, the dyeing process is simplified, the production cost is reduced, and the CDP / nylon / PU knitted fabrics with different styles and diversified colors can be produced by utilizing dyeing difference of the two dyes.

Description

technical field [0001] The invention belongs to the field of dyeing technology, and in particular relates to a one-bath dyeing method of CDP / nylon / PU fabric. Background technique [0002] In the prior art, when it comes to the dyeing of polyester and nylon fabrics, most of them are polyester and then nylon for two-bath dyeing, and then processed, which not only takes a long time but also increases the production cost. [0003] CDP is mainly dyed with cationic dyes, and nylon is mainly dyed with acid dyes. Both of them are dyed under acidic conditions, which provides the possibility of one-bath dyeing for both. [0004] If cationic dyes and acid dyes can be used to dye CDP / nylon / PU fabrics in one bath, not only can the processing technology be shortened and the production cost reduced, but also the difference in dyeing of the two dyes can be used to produce CDP with different styles and ever-changing colors / Nylon / PU knitted fabric comes. [0005] However, the different ion...

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): D06P1/16D06P1/39D06P1/673D06P1/651D06P3/87
Inventor 不公告发明人
Owner 上海缀菱纺织品有限公司
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