A Dyeing Process for Improving the Light Fastness of Gray-blue Perspiration of Pure Cotton Fabric

A pure cotton fabric and blue technology is applied in the field of dyeing technology for improving the gray-blue perspiration light fastness of pure cotton fabrics. , LOL color small effect

Active Publication Date: 2019-03-05
FUJIAN XIESHENG XIEFENG PRINTING & DYEING IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vat dyes have inherent advantages in these two indicators, but because of their narrow chromatographic range, they cannot dye brighter dark blue
If you choose a reactive blue dye with high light fastness, it is difficult to find a good combination of red and yellow dyes that match it. The continuous dyeing of pure cotton woven fabrics may have various color differences between the lot color and the side. , and the repair and over-dyeing also brought a lot of troubles. In order to solve the above contradictions, this case arose

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

[0037] 1. Formula and dosage

[0038] Vat dyes in vat dye suspension dispersion: vat black RB 45g / L;

[0039] Raw materials of reducing solution:

[0040] Sodium Hydrochloride 35g / L

[0041] Sodium hydroxide 40g / L;

[0042] Raw materials of reactive dye solution:

[0043] Reactive black KNB 10.5g / L

[0044] Reactive Red 3BS 5.3g / L

[0045] Reactive Yellow 3RS 6.7g / L;

[0046] Raw materials for saline solution:

[0047] Sodium sulfate 200g / L

[0048] Sodium carbonate 30g / L

[0049] Anti-staining salt S 5g / L.

[0050] 2. Dyeing process

[0051] First use water as a solvent, dissolve vat black RB in water and stir evenly to prepare vat dye suspension dispersion; use vat dye suspension dispersion to base dye pure cotton white cloth, adopt padding method, and use vat dye suspension to disperse Pad pure cotton white cloth with liquid for 1-2s, dry at 100°C; then use reducing solution to pad for 1-2s to reduce the dye, steam at 100°C for 45s, wash and oxidize, dry at 100°C...

Embodiment 2

[0054] 1. Formula and dosage

[0055] Vat dyes in vat dye suspension dispersion: vat olive T 40g / L;

[0056] Raw materials of reducing solution:

[0057] Sodium Hydrochloride 35g / L

[0058] Sodium hydroxide 40g / L;

[0059] Raw materials of reactive dye solution:

[0060] Reactive black KNB 12g / L

[0061] Active Red 3BS 6g / L

[0062] Reactive Yellow 3RS 6.7g / L;

[0063] Raw materials for saline solution:

[0064] Sodium sulfate 200g / L

[0065] Sodium carbonate 30g / L

[0066]Anti-staining salt S 5g / L.

[0067] 2. Dyeing process

[0068] First use water as solvent, dissolve reduced olive T in water and stir evenly to prepare vat dye suspension dispersion; use vat dye suspension dispersion to base dye pure cotton white cloth, adopt padding method, and use vat dye suspension to disperse Pad and pad pure cotton white cloth with liquid for 1-2s, and dry at 80°C; then use reducing solution to pad for 1-2s to reduce the dye, steam and fix the color at 102°C for 50s, wash and...

Embodiment 3

[0071] 1. Formula and dosage

[0072] Vat dyes in vat dye suspension dispersion: vat olive T 40g / L;

[0073] Raw materials of reducing solution:

[0074] Sodium Hydrochloride 35g / L

[0075] Sodium hydroxide 40g / L;

[0076] Raw materials of reactive dye solution:

[0077] Reactive black KNB 10g / L

[0078] Reactive Red 3BS 5.3g / L

[0079] Reactive Yellow 3RS 5.8g / L;

[0080] Raw materials for saline solution:

[0081] Sodium sulfate 200g / L

[0082] Sodium carbonate 30g / L

[0083] Anti-staining salt S 5g / L.

[0084] 2. Dyeing process

[0085] First use water as solvent, dissolve reduced olive T in water and stir evenly to prepare vat dye suspension dispersion; use vat dye suspension dispersion to base dye pure cotton white cloth, adopt padding method, and use vat dye suspension to disperse Pad pure cotton white cloth with liquid for 1-2s, and dry at 90°C; then use reducing solution to pad for 1-2s to reduce the dye, steam at 101°C for 50s, wash and oxidize, and dry at ...

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 dyeing process capable of increasing grey blue perspiration-light colorfastness of pure-cotton fabric. The dyeing process sequentially includes steps: vat dye suspension dispersing liquid dyeing, primary drying, primary color fixing, primary washing and drying, active dye liquid over dyeing, secondary drying, secondary color fixing and secondary washing and drying. The dyeing process has the advantages that vat dyes are used first to perform primary dyeing on the pure-cotton fabric until the fabric is dyed to the depth of 70-80%, reduction liquid can allow the vat dyes to convert into leuco body dyes with affinity to the pure-cotton fabric, the dyeing of the pure-cotton fabric is completed under a steaming condition, the leuco body dyes are oxidized into color precipitate deposited on the pure-cotton fabric by the aid of oxygen in the air after washing oxidation, then active dyes are used to perform over dyeing on the primarily dyed pure-cotton fabric, and accordingly the sun and perspiration-light colorfastness of the grey blue pure-cotton fabric can reach level 3 to level 4, LOL color is small before and after the dyeing, and lateral and middle color difference is stable.

Description

technical field [0001] The invention relates to the technical field of textile fabric printing and dyeing, in particular to a dyeing process for improving the gray-blue perspiration fastness of pure cotton fabrics. Background technique [0002] Pure cotton woven fabrics are usually dyed with reactive dyes and vat dyes. The dyeing equipment is mainly continuous pad dyeing, supplemented by overflow dyeing machines and jiggers. Continuous pad dyeing has the characteristics of high efficiency, uniform dyeing, and small LOT color (color difference between pieces), which is suitable for mass production, while overflow dyeing machines and jiggers have large tank differences and low production efficiency. Continuous pad dyeing equipment can be dyed with reactive dyes and vat dyes, while intermittent equipment such as overflow machines are only suitable for dyeing with reactive dyes. [0003] Because reactive dyes have a wide color spectrum, cotton fabrics are often dyed with reacti...

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): D06P1/22D06P1/38D06P3/60D06P3/66D06P5/02D06P5/10D06L1/16D06B3/10D06B11/00D06B21/00
CPCD06B3/10D06B11/0056D06B21/00D06L1/16D06P1/22D06P1/38D06P3/6025D06P3/66D06P5/02D06P5/10
Inventor 徐运昌官书春
Owner FUJIAN XIESHENG XIEFENG PRINTING & DYEING IND CO LTD
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