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Vat dye suspension wet shortened steaming pad dyeing technology

A wet short pad dyeing and suspension technology, which is applied in the field of vat dye suspension wet short pad dyeing process, can solve the problem of difficult adjustment of left, middle and right color difference and front and back color difference, waste of energy, level dyeing and color loss of exhaust dyeing process. Problems such as poor fastness

Active Publication Date: 2016-10-12
ANHUI YAYUAN PRINTING & DYEING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its high requirements, if the general fluid exhaust dyeing method is used to dye cotton and linen fabrics with vat dyes, it cannot meet this requirement at all, and the level dyeing and color fastness of the exhaust dyeing process are poor, so its application has been limited.
[0003] In the prior art, cotton and linen fabrics are usually dyed by means of vat dye suspension pad dyeing, which is carried out by padding vat dye suspension dye solution, drying, padding and steaming the reducing solution, and then oxidative soaping and drying. The process not only needs to waste a lot of energy, but also in the drying process of the primer, due to the migration of the dye to the upper part of the pile, it is difficult to adjust the color difference between the left, middle and right sides and the color difference of the front and back, which is unacceptable to customers

Method used

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  • Vat dye suspension wet shortened steaming pad dyeing technology

Examples

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Comparison scheme
Effect test

Embodiment 1

[0021] In this embodiment, a vat dye suspension wet short steam pad dyeing process includes the following processes:

[0022] S1, padding dyeing solution, according to the bath ratio of 1:5, the fabric to be dyed is padded in the vat dye suspension dyeing solution, two dipping and two padding, the temperature of the padding tank is 55 ° C, and the excess rate is 60%. Said vat dye suspension dye liquor comprises: superfine powdered vat dye 5% (oxf), reducing agent 1g / L, penetrating agent 3g / L, diffusing agent 1g / L, accelerator 30g / L;

[0023] S2, padding lye, directly padding the fabric to be dyed obtained through S1 treatment in lye, one dipping and one rolling, the temperature of the padding tank is 45 ℃, and the excess rate is 70%, and the lye includes : caustic soda 5g / L, hydrosulfite 10g / L;

[0024] S3. Reduction steaming, using saturated steam for rapid steaming, the temperature of reduction steaming is 100°C, and the steaming time is 2 minutes;

[0025] S4. Oxidation, ...

Embodiment 2

[0027] In this embodiment, a vat dye suspension wet short steam pad dyeing process includes the following processes:

[0028] S1, padding dyeing solution, according to the bath ratio 1:40, the fabric to be dyed is padded in the vat dye suspension dyeing solution, two dipping and two rolling, the temperature of the padding tank is 35 ° C, and the excess rate is 100%. Said vat dye suspension dye liquor comprises: superfine powdered vat dye 0.1% (oxf), reducing agent 20g / L, penetrating agent 1g / L, diffusion agent 3g / L, accelerator 5g / L; The preparation method of the vat dye comprises: mixing the vat dye and modified sodium lignosulfonate with water, then rotary cutting at high speed to obtain a slurry suspension with a fineness of 10-30um; Pulverize and grind to obtain a primary dye with a fineness of 5-10um; filter the primary dye through a filter element of 0.1-0.5um, and then spray dry to obtain the ultrafine powdered vat dye, the vat dye, modified The weight ratio of the mod...

Embodiment 3

[0035] In this embodiment, a vat dye suspension wet short steam pad dyeing process includes the following processes:

[0036]S1, padding dyeing solution, according to the bath ratio of 1:10, the fabric to be dyed is padded in the vat dye suspension dyeing solution, two dipping and two rolling, the temperature of the padding tank is 50 ° C, and the excess rate is 70%. Said vat dye suspension dye liquor comprises: superfine powdered vat dye 2% (oxf), reducing agent 10g / L, penetrating agent 2g / L, diffusion agent 2g / L, accelerator 15g / L; The preparation method of the vat dye comprises: mixing the vat dye and modified sodium lignosulfonate with water, then rotary cutting at high speed to obtain a slurry suspension with a fineness of 10-20um; Pulverize and grind to obtain a primary dye with a fineness of 5-10um; filter the primary dye through a filter element of 0.1-0.5um, and then spray dry to obtain the ultrafine powdered vat dye, the vat dye, modified The weight ratio of the per...

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Abstract

The invention discloses a vat dye suspension wet shortened steaming pad dyeing technology. The technology includes the following steps of 1, dye liquor padding, wherein fabric to be dyed is padded in vat dye suspension dye liquor, dipping and padding are carried out twice respectively, and the vat dye suspension dye liquor is prepared from 0.1-5% of superfine powder vat dye (oxf), 1-20 g / L of a reductant, 1-3 g / L of a penetrant, 1-3 g / L of a dispersant and 5-30 g / L of an accelerant; 2, alkali liquor padding, wherein the fabric to be dyed is directly padded in alkali liquor, dipping and padding are carried out once respectively, and the alkali liquor is prepared from 5-30 g / L of caustic soda and 0-10 g / L of sodium hydrosulfite; 3, steam reduction, wherein saturated steam is adopted for rapid steaming; 4, oxidation, wherein hydrogen peroxide is adopted for oxidation. According to the vat dye suspension wet shortened steaming pad dyeing technology, the level dyeing property and color fastness of the dyeing technology are significantly improved; besides, the technology is simple and saves energy.

Description

technical field [0001] The invention relates to the technical field of vat dyeing, in particular to a vat dye suspension wet short steam pad dyeing process. Background technique [0002] Due to its excellent color fastness to rinsing and light, vat dyeing has always been the favorite of people for dyeing cotton products. At present, the demand for cotton and linen fabrics dyed with vat dyes is gradually increasing in the international printing and dyeing market. However, due to its high requirements, if the general fluid exhaust dyeing method is used to dye cotton and linen fabrics with vat dyes, it cannot meet this requirement at all, and the level dyeing and color fastness of the exhaust dyeing process are poor, so its application has been limited. [0003] In the prior art, cotton and linen fabrics are usually dyed by means of vat dye suspension pad dyeing, which is carried out by padding vat dye suspension dye solution, drying, padding and steaming the reducing solution...

Claims

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Application Information

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IPC IPC(8): D06P1/22D06P1/48D06P1/649D06P1/673D06B3/18D06P5/20D06P5/02
CPCD06B3/18D06P1/22D06P1/48D06P1/6491D06P1/6735D06P1/67358D06P5/02D06P5/2077
Inventor 潘学东
Owner ANHUI YAYUAN PRINTING & DYEING CO LTD
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