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Dyeing technology without sewage discharging for jean

A technology for sewage discharge and denim, applied in the field of fabric dyeing, can solve the requirements of environmental protection problems and problems such as competitiveness, large quantities, sewage, etc., and achieve significant social and economic benefits, simple equipment, and energy saving effects.

Inactive Publication Date: 2012-07-11
孙国祥 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this oxidation-reduction process, a large amount of electrolytes and floating colors will be produced. When the dyeing is completed, these electrolytes and floating colors must be washed away with a large amount of water, which will generate a large amount of sewage, which cannot meet the requirements of environmental protection issues and Competitiveness

Method used

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  • Dyeing technology without sewage discharging for jean

Examples

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Comparison scheme
Effect test

Embodiment 1

[0027] A kind of non-sewage discharge dyeing process for denim, comprising the following preparation steps:

[0028] Step A, deploying dyes:

[0029] First, the indigo raw material and the biological reducing agent are uniformly mixed at normal temperature according to the weight ratio of 1:1 to prepare the indigo mixture;

[0030] Calculated by weight percentage, mix 0.01% of the indigo mixture, 0.5% of the diffusing agent and water; the prepared dyestuff is transferred to the dye vat for subsequent use;

[0031] Step B, drying the yarn with a drying drum to make the moisture content below 10%; using 110°C steam as a heat source in the drying drum;

[0032] Step C, dyeing the yarn dried in step B through a dyeing vat;

[0033] Step D, passing the indigo-dyed yarn obtained in step C over the rollers, exposing the dyed yarn to the air, and utilizing the air to oxidize and solidify the indigo on the yarn;

[0034] Step E, drying the oxidized yarn in step D with a drying cylin...

Embodiment 2

[0038] A kind of non-sewage discharge dyeing process for denim, comprising the following preparation steps:

[0039] Step A, deploying dyes:

[0040] First, the indigo raw material and the biological reducing agent are uniformly mixed at normal temperature according to the weight ratio of 1:1.1 to prepare the indigo mixture;

[0041] Calculated by weight percentage, mix 0.05% of the indigo mixture, 0.7% of the diffusing agent and water; the prepared dyestuff is transferred to the dye vat for subsequent use;

[0042] Step B, drying the yarn with a drying drum to make the moisture content below 10%; using 115°C steam as a heat source in the drying drum;

[0043] Step C, dyeing the yarn dried in step B through a dyeing vat;

[0044] Step D, passing the indigo-dyed yarn obtained in step C over the rollers, exposing the dyed yarn to the air, and utilizing the air to oxidize and solidify the indigo on the yarn;

[0045] Step E, drying the oxidized yarn in step D with a drying cyl...

Embodiment 3

[0049] A kind of non-sewage discharge dyeing process for denim, comprising the following preparation steps:

[0050] Step A, deploying dyes:

[0051] First, the indigo raw material and the biological reducing agent are uniformly mixed at normal temperature according to a weight ratio of 1:1.3 to obtain an indigo mixture;

[0052] Calculated by weight percentage, mix 0.1% indigo mixture, 0.8% diffusing agent and water; prepare dyestuffs and transfer them to dye vats for subsequent use;

[0053] Step B, drying the yarn with a drying drum to make the moisture content below 10%; using 120°C steam as a heat source in the drying drum;

[0054] Step C, dyeing the yarn dried in step B through a dyeing vat;

[0055] Step D, passing the indigo-dyed yarn obtained in step C over the rollers, exposing the dyed yarn to the air, and utilizing the air to oxidize and solidify the indigo on the yarn;

[0056] Step E, drying the oxidized yarn in step D with a drying cylinder;

[0057] Step F...

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Abstract

The invention belongs to the technical field of cloth dyeing and particularly relates to dyeing technology without sewage discharging for jean. The dyeing technology mainly includes that indigo, a biological reducing agent, diffusant and water are mixed to obtain dye, control of yarn humidity and dyeing process temperature is combined, finally jean yarn dyed by the indigo is obtained, and the jean yarn is spun to obtain jean products. Compared with traditional technology, the dyeing technology saves repeated dyeing-oxidization procedures, especially, dyed yarn does not need to be washed with a large amount of water, and the dyeing technology not only saves a large amount of energy, simultaneously greatly reduces damage of sewage on environment, and has remarkable social benefit and economical benefit.

Description

technical field [0001] The invention belongs to the technical field of cloth dyeing, in particular to a dyeing process for denim without sewage discharge. technical background [0002] Denim clothing has evolved from military uniforms into fashion, and has developed its youthful and energetic style into eternal fashion, showing the modern people's pursuit of freedom, enjoying an unfettered lifestyle, and creating happiness in the tense and fast-paced urban life. . Denim has been popular for more than 150 years and is enduring. At present, denim clothing has become one of my country's important export textiles, and it is also one of the main pillars of the country's income generation. It has generated a large amount of foreign exchange for the country and solved a large number of labor problems. Products are the main products, and low prices are used as the main means of competition; international anti-dumping trade frictions continue to escalate, and developed countries suc...

Claims

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Application Information

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IPC IPC(8): D06P1/22D06P1/44D06P1/62D06P1/46D06P5/02
Inventor 孙国祥李林学李杰钊
Owner 孙国祥
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