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One-bath dyeing method of polyester-cotton knitted fabrics

A technology of same-bath dyeing and polyester-cotton needles, applied in the field of textile printing and dyeing, can solve the problems of low production efficiency, short process flow, long process flow, etc., and achieve the effects of improving production efficiency, shortening the dyeing and finishing process, and reducing the chroma of wastewater

Active Publication Date: 2019-06-04
CHANGZHOU NEW WIDE KNITTING & DYEING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The object of the present invention is to provide a method that not only has a short process flow, but also does not require dye screening ( That is, using conventional dyes), especially the same-bath dyeing method for polyester-cotton knitted fabrics with better dyeing effect

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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  • One-bath dyeing method of polyester-cotton knitted fabrics
  • One-bath dyeing method of polyester-cotton knitted fabrics
  • One-bath dyeing method of polyester-cotton knitted fabrics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0041] The same-bath dyeing method of polyester-cotton knitted fabric in this embodiment is to dye black on T / C single jersey (65% / 35%), and the specific steps are as follows:

[0042] ① Cationic modification of T / C single-sided fabric.

[0043] Arrange the above T / C on one side in the modifying solution, and evenly paddle it with a rolling car to achieve a surplus rate of 80%, and then stack it at room temperature for 12 hours.

[0044] The formula of the modified liquid is as follows: cationic modifier 100g / L, sodium hydroxide 30g / L, penetrant 10g / L, and the rest is water.

[0045] The cationic modifier is 3-chloro-2-hydroxypropyltrimethylammonium chloride cationic quaternary ammonium salt.

[0046] The penetrating agent is strong alkali-resistant non-silicon penetrating agent FS.

[0047] ②Arrange one side of T / C after cationic modification in the overflow dye vat for neutralization and cleaning, the temperature is 70°C, and the time is 15 minutes.

[0048] ③ Dyeing in t...

Embodiment 2）

[0057] The same-bath dyeing method of polyester-cotton knitted fabric in this embodiment is to dye emerald blue on T / C single jersey (65% / 35%), and the specific steps are as follows:

[0058] ① Cationic modification of T / C single-sided fabric.

[0059] Arrange the above T / C on one side in the modifying solution, and evenly paddle it with a rolling car to achieve a surplus rate of 80%, and then stack it at room temperature for 12 hours.

[0060] The formula of the modified liquid is as follows: cationic modifier 80g / L, sodium hydroxide 24g / L, penetrant 8g / L, and the rest is water.

[0061] The cationic modifier is 3-chloro-2-hydroxypropyltrimethylammonium chloride cationic quaternary ammonium salt.

[0062] The penetrating agent is strong alkali-resistant non-silicon penetrating agent FS.

[0063] ② Arrange one side of T / C after cationic modification in the overflow dye vat for neutralization and cleaning, the temperature is 80 ℃, and the time is 20 minutes.

[0064] ②'Bleac...

Embodiment 3）

[0075] The same-bath dyeing method of polyester-cotton knitted fabric in this embodiment is to dye red on T / C single jersey (65% / 35%), and the specific steps are as follows:

[0076] ① Cationic modification of T / C single-sided fabric.

[0077] Arrange the above T / C on one side in the modifying solution, evenly paddle and paddle, the excess rate is 80%, and then stack at room temperature for 12 hours.

[0078] The formula of the modified liquid is as follows: cationic modifier 70g / L, sodium hydroxide 21g / L, penetrant 7g / L, and the rest is water.

[0079] The cationic modifier is 3-chloro-2-hydroxypropyltrimethylammonium chloride cationic quaternary ammonium salt.

[0080] The penetrating agent is strong alkali-resistant non-silicon penetrating agent FS.

[0081] ② Arrange one side of T / C after cationic modification in the overflow dye vat for neutralization and cleaning, the temperature is 80 ℃, and the time is 20 minutes.

[0082] ②'Bleaching is carried out according to the...

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Abstract

The invention discloses a one-bath dyeing method of polyester-cotton knitted fabrics, which comprises the specific steps of (1) placing a polyester-cotton knitted fabric in a modifying liquid, carrying uniform padding with a padder, and piling at normal temperature, wherein the modifying liquid is made with 30-100 g / L of a cationic modifier, 15-30 g / L of sodium hydroxide, 5-15 g / L of a penetrant and the balance of water; (2) neutrally washing the cation-modified polyester-cotton knitted fabric in an overflow vat; (3) carrying out one-bath dyeing; (4) treating after dyeing. Cotton fibers are modified herein through the cation modification technique, so that the binding mode of active dye / direct dye and cotton fibers is changed; therefore, degree of dyeing can be increased, and wastewater chromaticity can be decreased. Dyeing acceleration by salts and color fixation by bases are not required, so that environmental pollution is avoided. One-bath dyeing along with conventional disperse dyes is available herein, dye screening is not required, and therefore, the dyeing and finishing process is greatly shortened and production efficiency is improved; the wash fastness is good, so that customers' needs are met.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing, and in particular relates to a method for dyeing polyester-cotton knitted fabrics in the same bath. Background technique [0002] The traditional dyeing method of polyester-cotton (interwoven or blended) knitted fabrics is: pretreatment→dyeing and washing→reduction washing→cotton covering→soaping. This method has long process flow, high water consumption and low production efficiency. [0003] Document 1 discloses a method for dyeing fabrics containing polyester fibers and cotton fibers, including dyeing polyester fibers (conventional disperse dyes), (after draining) refining, (after draining) dyeing cotton fibers (conventional reactive dyes) And color fixation; Document 2 discloses a method for one-bath dyeing of fabrics containing cotton fibers and polyester fibers, including simultaneously refining and dyeing polyester fibers (conventional disperse dyes), (non-drainage) dye...

Claims

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Application Information

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IPC IPC(8): D06P3/872D06P3/87D06P1/16D06P1/38D06P1/44D06P1/66
Inventor 左凯杰万高阳李华生王碧华
Owner CHANGZHOU NEW WIDE KNITTING & DYEING
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