Wet short steaming pad dyeing process adopting vat dye microcapsules

A technology of short wet steam pad dyeing and microcapsules, which is applied in the field of vat dye microcapsule wet short steam pad dyeing technology, which can solve the problem of difficult adjustment of left, middle and right color difference and front and back color difference, level dyeing and color fastness of exhaust dyeing process Poor, application limitations and other issues, to achieve the effect of improving dyeing effect, excellent slow-release function, and reducing energy consumption

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

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 vat dyes of cotton and linen fabrics are dyed by general fluid dip dyeing, this requirement cannot be met at all. Poor color fastness, its application has been limited
[0003] In the prior art, cotton and linen fabrics are usually dyed by padding with vat dye suspension, which i

Method used

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  • Wet short steaming pad dyeing process adopting vat dye microcapsules
  • Wet short steaming pad dyeing process adopting vat dye microcapsules

Examples

Experimental program
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Effect test

Embodiment 1

[0019] In this embodiment, a wet short steam pad dyeing process of vat dye microcapsules comprises the following processes:

[0020] S1, padding dyeing solution, according to the bath ratio 1:5, the fabric to be dyed is dipped in the padding dyeing solution, two dipping and two rolling, the temperature of the padding tank is 50 ° C, and the excess rate is 70%. The dyeing solution includes: Dye microcapsules 10% (owf), thiourea dioxide 1g / L, pH buffer 3g / L, penetrant 1g / L, accelerator 30g / L;

[0021] S2, padding lye, directly padding the fabric to be dyed obtained through S1 treatment with lye, one dipping and one rolling, the temperature of the padding tank is 55 ° C, and the excess rate is 80%, and the lye includes: caustic soda 5g / L, hydrosulfite 10g / L;

[0022] S3. Reduction steaming, using saturated steam for fast steaming, the temperature of reduction steaming is 100°C, and the steaming time is 1.5min;

[0023] S4. Oxidation, using hydrogen peroxide for oxidation, the o...

Embodiment 2

[0025] In this embodiment, a wet short steam pad dyeing process of vat dye microcapsules comprises the following processes:

[0026] S1, padding dyeing solution, according to the bath ratio 1:40, the fabric to be dyed is dipping and padding dyeing solution, two dipping and two rolling, the temperature of the padding tank is 30 ° C, and the excess rate is 100%. The dyeing solution includes: reduction Dye microcapsules 0.1% (owf), thiourea dioxide 20g / L, pH buffering agent 1g / L, penetrant 3g / L, accelerator 5g / L; Wherein, the preparation method of described vat dye microcapsules comprises: After the vat dye is ground, add water to configure the suspension of the vat dye, and add a chitosan solution with a concentration of 35g / L to the vat dye suspension with a concentration of 30g / L, which contains 3wt% glacial acetic acid , stir until uniformly dispersed, then add gelatin solution with a concentration of 75g / L, stir until uniformly dispersed, continue to add liquid paraffin and ...

Embodiment 3

[0033] In this embodiment, a wet short steam pad dyeing process of vat dye microcapsules comprises the following processes:

[0034] S1, padding dyeing solution, according to the bath ratio 1:10, the fabric to be dyed will be dipped in the padding dyeing solution, two dipping and two rolling, the temperature of the padding tank is 45 ° C, and the excess rate is 80%. The dyeing solution includes: reduction Dye microcapsules 5% (owf), thiourea dioxide 10g / L, pH buffering agent 2g / L, penetrant 2g / L, accelerator 20g / L; Wherein, the preparation method of described vat dye microcapsules comprises: After the vat dye is ground, add water to configure the suspension of the vat dye, and add a chitosan solution with a concentration of 25 g / L to the vat dye suspension with a concentration of 45 g / L, and the chitosan solution contains 5 wt% of glacial acetic acid , stir until uniformly dispersed, then add gelatin solution with a concentration of 65g / L, stir until uniformly dispersed, conti...

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Abstract

The invention discloses a wet short steaming pad dyeing process adopting vat dye microcapsules. The wet short steaming pad dyeing process comprises procedures as follows: S1, padding and rolling in a dyeing : to-be-dyed fabric is padded in the dyeing for double padding and double rolling, and the dyeing is prepared from 0.1%-10% (owf) of the vat dye microcapsules, 1-20 g/L of thiourea dioxide, 1-3 g/L of a pH buffering agent, 1-3 g/L of a penetrant and 5-30 g/L of an accelerator; S2, padding and rolling in an alkaline : the to-be-dyed fabric obtained through treatment in S1 is directly padded and rolled in the alkaline for single padding and single rolling, and the alkaline is prepared from 5-30 g/L of caustic soda and 0-10 g of sodium dithionite; S3, reduction and steaming: saturated steam is used for rapid steaming; S4, oxidization: hydrogen peroxide is adopted for oxidation. By means of the wet short steaming pad dyeing process adopting the vat dye microcapsules, the level dyeing property and the color fastness are remarkably improved, the process is simple and energy is saved.

Description

technical field [0001] The invention relates to the technical field of vat dyeing, in particular to a vat dye microcapsule 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 vat dyes of cotton and linen fabrics are dyed by general fluid dip dyeing, this requirement cannot be met at all. The color fastness is poor, and its application has been limited. [0003] In the prior art, cotton and linen fabrics are usually dyed by padding with vat dye suspension, which is carried out by padding vat dye suspension dye solution, drying, padding and steaming the reducing solution, and then oxidative soaping and drying. Such a process not only needs t...

Claims

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Application Information

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IPC IPC(8): D06B3/18D06B23/14D06B23/00D06B23/22D06P1/22
CPCD06B3/18D06B23/00D06B23/14D06B23/22D06P1/22
Inventor 潘学东
Owner ANHUI YAYUAN PRINTING & DYEING CO LTD
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