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Bleaching water for preventing elastic jeans from loss of elasticity by washing and application of bleaching water

A beautiful, denim technology, used in bleached products, dry cleaning fiber products, textiles and papermaking, etc., can solve the problems of high neutralization pressure, easy loss of spandex yarn, long bleaching time, etc., to reduce acid-base neutralization acid , Wide range of applications, the effect of shortening the bleaching time

Inactive Publication Date: 2015-04-22
FIBER CHEM BIOLOGICAL CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, there are more elastic denims containing 1-3% spandex on the market. In the washing process, spandex is extremely sensitive, and is easily affected by the external environment and cause spandex to lose its elasticity. For example, polyester-based anti-dyeing agents , bleaching water (sodium hypochlorite solution), acid, solvent, temperature, etc., especially bleaching water (sodium hypochlorite solution), spandex yarn is very easy to lose elasticity during chlorine bleaching, resulting in chlorine loss
In the process of chlorine bleaching, clothing washing factories generally use high-alkali (solid caustic soda) low-temperature hypochlorous acid bleaching, which takes a long time to bleach, and the shade is not correct (green, gray), and the amount of bleaching water is large, resulting in a great pressure on sewage discharge. , the COD value is high, and the follow-up neutralization pressure is high. The most important thing is that it is still impossible to avoid the dilemma of denim missing bullets, which also brings great economic losses to factories and customers.

Method used

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  • Bleaching water for preventing elastic jeans from loss of elasticity by washing and application of bleaching water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A process for applying beautiful water to prevent elastic denim from losing its elasticity after washing, the process steps are as follows:

[0038] (1) Put 100 strips of elastic denim into a 600-pound industrial washing machine, feed 800-1000L of water, add 1000ml of beautiful water, 1500ml of white soap oil (1:10 dilution), 2000ml of anti-staining agent, heat up to 60°C, and turn on the machine 10-15 minutes, drain the liquid, and pass through clean water;

[0039] (2) Enter 800-1000L of water, add 1000ml of beautiful water, 2000ml of anti-staining agent, heat up to 50°C, add 300g of citric acid or glacial acetic acid, add 100g of neutral cellulase, turn the machine for 30 minutes, drain, and pass clean water together;

[0040] (3) Enter 800-1000L of water, add 2000ml of beautiful water, run for 5 minutes, heat up to 55°C, add 8L of bleaching water, run for 2 minutes, add 16L of bleaching water, run for 2 minutes, add 16L of bleaching water, and bleach for 15 minutes...

Embodiment 2

[0042] A process for applying beautiful water to prevent elastic denim from losing its elasticity after washing, the process steps are as follows:

[0043] (1) First, 120 strips of elastic denim are hand-rubbed, put them into a 600-pound washing machine, enter 1000L of water, add 1200ml of beautiful water, 2000ml of white soap oil (1:10 dilution), 2000ml of anti-staining agent, and turn the machine to heat up to 60°C, run for 10-15 minutes, drain and clean;

[0044] (2) Add 1000L of water, add 2 bags of Turkish pumice, add 1500mL of beautiful water, 3000ml of anti-staining agent, heat up to 45°C, add 300g of citric acid or glacial acetic acid, add 200g of neutral cellulase, and turn the machine for 25 minutes , drainage, fishing machine;

[0045](3) Then put it into another 600-pound washing machine, fill in 1000L of water, wash it once, and drain;

[0046] (4) Enter 1000L of water, add 2000ml of beautiful water, run for 5 minutes, heat up to 50°C, add 10L of bleaching water...

Embodiment 3

[0048] Production of beautiful water: Weigh raw materials by weight: 30 polysulfonamide derivatives, 5 mixtures of monoamines and polyamines, 1 tetrasodium ethylenediaminetetraacetic acid, 15 polyamino acid derivatives.

[0049] Then add water into the reaction kettle one by one, add tetrasodium ethylenediaminetetraacetic acid, start stirring, after fully stirring and dissolving, add the mixture of unit amine and polyamine (according to 3:1 mass ratio), stir and mix for 10 minutes, and finally Add polyamino acid derivatives and polysulfonamide derivatives, mix and stir until clear, transparent and homogeneous liquid is obtained. At this time, the detected pH value is 8-9, and the appearance is light yellow transparent liquid.

[0050] The application of the above-mentioned beautiful water in preventing elastic denim from losing its elasticity after washing specifically includes the following steps:

[0051] (1) Beautiful water desizing: Put the elastic denim into the industri...

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PUM

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Abstract

The invention relates to bleaching water for preventing elastic jeans from loss of elasticity by washing and application of the bleaching water. The bleaching water is prepared from the following components in parts by weight: 30-40 parts of a polysulfanilamide derivative, 1-5 parts of a monoamine and polyamine mixture, 0.1-1 part of EDTA tetrasodium salt and 5-15 parts of a polyamino acid derivative. The application specifically comprises the following steps: (1) desizing the bleaching water; (2) enzymatic washing the bleaching water by cellulose; and (3) chlorine bleaching the bleaching water. Compared with the prior art, the bleaching water provided by the invention has the obvious advantages of preventing spandex from loss of elasticity and the like.

Description

technical field [0001] The invention relates to a denim washing and finishing process, in particular to a manufacturing process for beautiful water for preventing elastic denim from losing its elasticity after washing and its application. Background technique [0002] At present, with the advancement of fashion, denim clothing is also gradually moving towards high-grade and high-quality direction. A kind of elastic tight-fitting denim is gradually popular in the market, and its washing process is also developing towards high-tech content. Stretch denim mainly contains a small amount of spandex core-spun yarn, ranging from 0.5-1% spandex to as much as 3-6%, also known as high-elastic denim. Generally, there are more elastic denims containing 1-3% spandex on the market. In the washing process, spandex is extremely sensitive, and is easily affected by the external environment and cause spandex to lose its elasticity. For example, polyester-based anti-dyeing agents , bleaching ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06L1/16D06L3/06D06L4/21D06L4/27
Inventor 单新强郭雅丽吴浩吴齐金丛彦涛陈泉东
Owner FIBER CHEM BIOLOGICAL CHEM
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