A short wet steaming process for continuous pad dyeing of towel fabric with vat dyes

A processing technology, short wet steaming technology, applied in the textile field, can solve the problem of high energy consumption, and achieve the effect of ensuring the stability of the auxiliary agent, improving the dyeing fixation rate, and ensuring the color fastness index.

Active Publication Date: 2015-09-09
SUNVIM GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the continuous dyeing of textiles with vat dyes in China is mainly knitted fabrics and woven fabrics, and they all use the process of pad-drying-pad-steaming, which consumes a lot of energy.
Towel products are continuously dyed with vat dyes using a pad steamer, which is still technically blank at present

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

[0035] A kind of towel quilt fabric vat dye continuous pad dyeing short wet steam processing technology, comprises the following sequential steps:

[0036] (1) Padding liquid: a small-capacity rolling tank with a capacity of 75L and a pressure roller with a hydraulic pressure of 0.440bar are used for uniform rolling. The hardness of the rubber roller is 60° Shore, and the pressure parameters of the rubber roller can be adjusted directly by using the buttons that come with the equipment: the deviations are 0.020bar, 0.030bar, and 0.160bar respectively; the maximum edge pressure deviation is 2.0N / mm, the line The pressure is 10N / mm; the air pressure of the cylinder is 0.7bar; the head and tail color difference correction length is 50 meters, and the head and tail color difference correction pressure is 5N / mm; then the towel quilt fabric is pad dyed with vat dye in the small-capacity rolling groove, Keep the overroll ratio at 90%;

[0037] (2) Addition of auxiliaries: The auxili...

Embodiment 2

[0043] A kind of towel quilt fabric vat dye continuous pad dyeing short wet steam processing technology, comprises the following sequential steps:

[0044] (1) Padding liquid: a small-capacity rolling tank with a capacity of 80L and a pressure roller with a hydraulic pressure of 2.220bar are used for uniform rolling. The roller is a rubber roller, and the hardness of the rubber roller is 70° Shore. The pressure parameters of the rubber roller can be adjusted directly by using the password button that comes with the equipment: the deviations are 0.020bar, 0.030bar, and 0.160bar respectively; the maximum edge line pressure deviation is 2.0N / mm, the line pressure is 50N / mm; the air pressure of the cylinder is 3.5bar; the head and tail color difference correction length is 50 meters, and the head and tail color difference correction pressure is 5N / mm; Pad-dyed by fabric, keeping the padding rate at 95%;

[0045] (2) Addition of auxiliaries: The auxiliaries are supplied by the hig...

Embodiment 3

[0051] A kind of towel quilt fabric vat dye continuous pad dyeing short wet steam processing technology, comprises the following sequential steps:

[0052] (1) Padding liquid: using a small-capacity rolling tank with a capacity of 78L and a uniform rolling car with a pressure roller oil pressure of 1.500. It is a rubber roller, the hardness of the rubber roller is 65° Shore, and the pressure parameters of the rubber roller can be adjusted directly by using the buttons that come with the equipment: the deviations are 0.020bar, 0.030bar, and 0.160bar, respectively; the maximum edge line pressure deviation is 2.0N / mm, the line pressure is 30N / mm; the air pressure of the cylinder is 2.1bar; the head and tail color difference correction length is 50 meters, and the head and tail color difference correction pressure is 5N / mm; then the vat dye in the small-capacity rolling groove is used for the towel quilt fabric. Pad dyeing was carried out to maintain a padding rate of 93%;

[00...

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 continuous pad dyeing and shortened wet steaming processing technology for a towel and sheet fabric vat dye. The processing technology comprises the following sequential steps that (1), a small-capacity groove with a capacity of 75-80L and an evenness calender with compression roller oil pressure of 0.440-2.220bar are adopted, towel and sheet fabric is subjected to pad dyeing with the vat dye, and a pick-up ratio is kept as 90-95%; (2), an assistant is supplied by a high liquid supply device, a stain ratio of the assistant on the towel and sheet fabric is kept as 90-100%, and the assistant comprises 100-160ml / L of 42wt% caustic soda solution and 50-80g / L of sodium hydrosulfite; (3), rapid steaming is conducted; (4) high-efficiency water washing is conducted; and (5) oxidation is conducted with hydrogen peroxide oxidation liquid, and the towel and sheet fabric dyed by the vat dye is obtained. According to the processing technology, the dyeing quality of the vat dye is improved greatly, the dip dyeing defect of the vat dye is overcome, the production efficiency is high, the energy consumption is low, the labor intensity is low, and the environmental pollution is little.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a short wet steaming process for continuous pad dyeing with vat dyes of towel quilt fabrics. Background technique [0002] The dyeing mechanism of vat dyes is very different from that of reactive dyes. Reactive dyes are reactive dyes. The dyeing mechanism is that the reactive groups carried by reactive dyes undergo cross-chain reaction with cellulose fiber-OH under alkaline conditions. , so as to be firmly fixed on the fiber. The dyeing mechanism of vat dyes is more complicated, mainly because vat dyes themselves are insoluble in water, and they are in a granular suspended state in water, so they cannot dye fibers. The leuco is an unstable intermediate, which can only be fixed on the fiber and show its normal luster after oxidation, and the color fastness is good. At present, vat quilt fabrics are rarely dyed with vat dyes, and most of the towel quilt products that use vat dye...

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): D06P1/22D06P1/673D06P5/02D06B21/00D06B3/18
Inventor 周文国鹿秀洁贾李峰钱宗红
Owner SUNVIM GROUP
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