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Dyeing method for brocade cotton knitted fabric

A dyeing method and a technology for knitted fabrics, which are applied in the dyeing field of nylon-cotton knitted fabrics, can solve problems such as low production efficiency, increased production costs, and complicated technological processes, and achieve the effects of reducing dyeing costs, increasing pass rates, and improving dyeing efficiency

Active Publication Date: 2019-06-28
佛山市顺德彩辉纺织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) Poor color reproducibility after dyeing;
[0006] (2) The technological process is relatively complicated and the dyeing time is long, which leads to low production efficiency;
[0007] (3) High energy consumption increases production cost

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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  • Dyeing method for brocade cotton knitted fabric
  • Dyeing method for brocade cotton knitted fabric
  • Dyeing method for brocade cotton knitted fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Nylon cotton knitted fabric: 80S / 1 modal + 40D / 12F nylon semi-gloss filament + 30D spandex double-sided (58% modal 35% nylon 7% spandex), weight 185g / ㎡, width 150cm;

[0042] Equipment: Lixin ECO-38;

[0043] Dyeing recipe:

[0044]

[0045] Bath ratio: 1:8

[0046] Such as image 3 , after the pre-treatment, put the polyamide-cotton knitted loose cloth into the Fong’s ECO-38 dyeing machine, raise the temperature to 40°C, add leveling agent 723, and Yuanming powder, and dilute the dye in the auxiliary vat by 1 / 2-1 / 3 After mixing evenly, make a dye solution, pump it into the main vat in a quantitative manner of 70% according to the Dosing curve. , keep warm for 30min, then cool down to 60℃ at 0.8℃ / min, run for 10min, add soda ash (inject 1 / 3 according to the Dosing curve at 50% quantitative mode for the first time, and the injection time is 20min, the second time according to the Dosing curve at 50% % Quantitative way to inject 2 / 3, the injection time is 20min), ...

Embodiment 2

[0048] Nylon cotton knitted fabric: 80S / 1 modal + 40D / 12F nylon semi-gloss filament + 30D spandex double-sided (58% modal 35% nylon 7% spandex), weight 185g / ㎡, width 150cm;

[0049] Equipment: Lixin ECO-38;

[0050] Dyeing recipe:

[0051]

[0052] Bath ratio: 1:6

[0053] After the pretreatment, put the polyamide-cotton knitted fabric loose cloth into the Fong’s ECO-38 dyeing machine, raise the temperature to 40°C, add leveling agent 723 and sodium sulfate, and dilute the dye in the auxiliary vat by 1 / 2-1 / 3 according to the above formula After mixing evenly, make a dye solution, pump it into the master vat in a quantitative manner of 70% according to the Dosing curve. Insulate for 30 minutes, then cool down to 58°C at 0.8°C / min, run for 10 minutes, add soda ash (the first time according to the Dosing curve, inject 1 / 3 in a quantitative manner of 50%, the injection time is 20min, and the second time according to the Dosing curve at 50% Inject 2 / 3 in a quantitative way, t...

Embodiment 3

[0055] Nylon cotton knitted fabric: 80S / 1 modal + 40D / 12F nylon semi-gloss filament + 30D spandex double-sided (58% modal 35% nylon 7% spandex), weight 185g / ㎡, width 150cm;

[0056] Equipment: Lixin ECO-38;

[0057] Dyeing recipe:

[0058]

[0059]

[0060] Bath ratio: 1:8

[0061] After the pretreatment, put the polyamide-cotton knitted fabric loose cloth into the Fong’s ECO-38 dyeing machine, raise the temperature to 40°C, add leveling agent 723 and sodium sulfate, and dilute the dye in the auxiliary vat by 1 / 2-1 / 3 according to the above formula After mixing evenly, make a dye solution, pump it into the main vat in a 70% quantitative manner according to the Dosing curve. Insulate for 30 minutes, then cool down to 60°C at 0.8°C / min, run for 10 minutes, add soda ash (the first time according to the Dosing curve, inject 1 / 3 in a quantitative manner of 50%, the injection time is 20min, and the second time according to the Dosing curve at 50% Inject 2 / 3 in a quantitative...

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 dyeing method for a brocade cotton knitted fabric. The method comprises the steps that brocade cotton one-bath dyeing is conducted, the pretreated brocade cotton knitted fabric is added to a dyeing machine and heated to 40 DEG C, a leveling agent, anhydrous sodium sulphate and a working solution prepared from an active dye are added in sequence, heating dyeing is conducted, then cooling is conducted to 58-62 DEG C, and sodium carbonate is added for coloring in batch; partial sodium carbonate is added firstly, and then remaining sodium carbonate is added; the mass ratio of the partial sodium carbonate to the remaining sodium carbonate is smaller than or equal to 1 / 3. For the brocade cotton knitted fabric, the addition sequence of the sodium carbonate is designed tobe after heating dyeing, the sodium carbonate is added in twice, one-bath dyeing of a brocade cotton fiber can be achieved, the phenomenon of poor dyed color reproducibility of a common two-bath two-step method can be avoided, the color spots and dyeing defects can be effectively reduced, and the first pass yield of the color is increased; through one-bath dyeing, the dyeing period can be shortened, the dyeing efficiency is improved, consumption of water, power and gas energy is lowered, and accordingly the dyeing cost is lowered.

Description

technical field [0001] The invention relates to the technical field of textile dyeing, in particular to a method for dyeing nylon-cotton knitted fabrics. Background technique [0002] Nylon-cotton knitted fabric has the excellent properties of two kinds of fibers, nylon and cotton, and is currently a popular clothing fabric, widely used. Due to the difference in the chemical structure of nylon fiber and cotton fiber, the requirements for dyeing process and dye auxiliaries are quite different during dyeing, and the dyeing process has its own particularity. [0003] At present, in the traditional dyeing and finishing process, the dyeing method of nylon-cotton knitted fabrics is mainly an active acidic two-bath two-step method (refer to figure 1 ), that is, after the nylon-cotton knitted fabric is soaked, washed, neutralized, and deoxidized, the cotton fiber is first dyed with reactive dyes, after post-treatment and water washing, the nylon fiber is dyed, and finally the color...

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): D06P1/38D06P3/85D06P1/673D06P1/00
Inventor 曹志强
Owner 佛山市顺德彩辉纺织有限公司
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