Grey cashmere discoloring method

A technology of green velvet and soft water, applied in the field of decolorization of plush, can solve the problems of long decolorization time, low production efficiency, time-consuming and laborious, and achieve the effect of short decolorization time and low cost.

Active Publication Date: 2014-06-25
新疆华春毛纺有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, many cold decolorization technologies of green cashmere are used in the market. The disadvantage is that the decolorization time is long, nearly 48 hours, the production efficiency is low, and the cashmere scales are damaged after decolorization, which is time-consuming and laborious.
There is also the use of thermal decolorization technology, the average decolorization time is 7 to 9 hours, and many problems with thermal decolorization technology are: large amount of ferrous salt, many times of washing, some washing times as many as 5 to 7 times, waste of water, Time-consuming, unclean ferrous ions over-oxidize cashmere fibers during oxygen bleaching, not only waste hydrogen peroxide, but also cause large damage to cashmere, high weight loss, low whiteness, and low efficiency

Method used

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  • Grey cashmere discoloring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] A method for decolorizing green velvet, comprising the following steps:

[0073] ①. Enzyme washing: Put the green velvet into the loose wool dyeing vat at room temperature, add soft water, the bath ratio is 1:10~15, stir, and then add 2% (owf) non-ionic lotion (FK-9508D1, China Textile Chemical Co., Ltd. ) and 0.1% (owf) sererinase (cta-b, China Textile Chemicals) soaking treatment, adjust the pH value to 8; increase the temperature by 2°C per minute to 55°C, maintain for 15 minutes, empty the mixed lotion; wash once ;

[0074] ②. Pretreatment: add soft water to the green velvet washed in step ①, stir, adjust the pH value to 5, add 5% (owf) of hydrosulfite in turn, add 1% (owf) complexing agent, 2.5% (owf) FeSO 4 ;Increase the temperature by 3°C per minute to 55°C, keep it warm for 60 minutes, empty it, and wash it once with water;

[0075] ③. Oxygen bleaching: step ② add soft water to the washed green velvet, stir, and then add 20% (owf) oxygen bleaching stabilizer ...

Embodiment 2

[0084] A method for decolorizing green velvet, comprising the following steps:

[0085] ①. Enzyme washing: put the green velvet into the loose hair dyeing vat at room temperature, add soft water, the bath ratio is 1:10~15, stir, and then add 1% (owf) non-ionic lotion and 0.2% (owf) mercerizing Protease soaking treatment, adjust the pH value to 9; increase the temperature by 2°C per minute to 40°C, keep warm for 25 minutes, empty, and wash with water;

[0086] ②. Pretreatment: Add soft water to the green velvet washed in step ①, stir, adjust the pH value to 4, add 4.5% (owf) of hydrosulfite, 0.5% (owf) complexing agent, 2% (owf) FeSO 4 ;Increase the temperature by 1°C per minute to 57°C, keep it warm for 40 minutes, empty it, and wash it twice with water;

[0087] ③. Oxygen bleaching: step ② add soft water to the washed green velvet, stir, add 10% (owf) oxygen bleaching stabilizer, 6% (owf) cashmere protective agent and 24% (owf) hydrogen peroxide for soaking and washing, adj...

Embodiment 3

[0090] A kind of decolouring method of green cashmere, comprises the following steps: wherein following concentration is relative green cashmere weight,

[0091] ①. Enzyme washing: Put the green velvet into the loose wool dyeing vat at room temperature, add soft water, the bath ratio is 1:10~15, stir, and then add 3% (owf) non-ionic lotion and 0.1% (owf) mercerizing Protease soaking treatment, adjust the pH value to 9; heat up to 45°C, keep warm for 20 minutes, empty, and wash with water;

[0092] ②. Pretreatment: add soft water to the green velvet washed in step ①, stir, adjust the pH value to 5, add 3% (owf) hydrosulfite, 0.7% (owf) complexing agent, 1.5% (owf) FeSO 4 ;Heat up to 56°C, keep warm for 50 minutes, empty, and wash twice with water;

[0093] ③. Oxygen bleaching: Step ② Add soft water to the washed green velvet, stir, add 15% (owf) oxygen bleaching stabilizer, 5% (owf) cashmere protective agent and 30% (owf) hydrogen peroxide for soaking and washing, adjust the ...

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PUM

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Abstract

The invention discloses a grey cashmere discoloring method which comprises the following steps: (1) performing enzyme wash; (2) performing pretreatment; (3) performing oxygen bleaching; and (4) performing reducing bleaching. By adoption of the discoloring method, the grey cashmere is high in whiteness, small in weightlessness, low in strength loss, good in handfeel and easy to spin, short in discoloring time, and low in cost, wherein water and power can be saved.

Description

technical field [0001] The invention relates to the technical field of wool decolorization, in particular to a method for decolorizing green wool. Background technique [0002] Green velvet is a kind of cashmere whose whiteness is second only to that of white velvet. Green velvet itself is cashmere fiber, and its length and fineness are the same as that of white velvet, but because of its natural beige color, it cannot be used for brighter light-colored cashmere. 1. Medium-color dyeing (it is darker after dyeing), and the price is about 100,000 per ton less than that of white velvet. Therefore, many manufacturers use green velvet as white velvet after decolorization, in order to save the amount of white velvet and reduce costs. [0003] Currently on the market, many cold decolorization technologies for green cashmere are used. The disadvantage is that the decolorization time is long, nearly 48 hours, the production efficiency is low, and the cashmere scales are damaged after...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M16/00D06M11/54D06M11/55D06L3/02D06M13/188D06M13/288D06M13/447D06M13/342D06M101/12D06L4/12D06L4/13D06L4/30D06L4/70
Inventor 李疆川
Owner 新疆华春毛纺有限公司
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