CN108085958A - A kind of cashmere is stripped technique - Google Patents
A kind of cashmere is stripped technique Download PDFInfo
- Publication number
- CN108085958A CN108085958A CN201711282246.2A CN201711282246A CN108085958A CN 108085958 A CN108085958 A CN 108085958A CN 201711282246 A CN201711282246 A CN 201711282246A CN 108085958 A CN108085958 A CN 108085958A
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- Prior art keywords
- cashmere
- addition
- evenly
- technique
- stabilizer
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Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/13—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen using inorganic agents
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/12—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen combined with specific additives
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/30—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using reducing agents
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/70—Multi-step processes
Abstract
It strips technique the invention discloses a kind of cashmere, includes cashmere into the water, sequentially adding pigment separated agent, cashmere protective agent, complexing stabilizer, sodium hydrosulfite, complexing agent and stirring evenly, empty, washed twice after holding successively.Cashmere into the water, sequentially adds cashmere protective agent, oxidation stabilizers, hydrogen peroxide, is kept after heating after washing again, then is emptied after the holding that heats up, then washes twice；Powder, oxalic acid, reduction protectants, reduction stabilizer insure successively again simultaneously, is emptied again after holding；It rinses, and dries in cold water.A kind of cashmere according to the present invention is stripped technique, and the whiteness rate of descent that cashmere uses for a long time can be used the whiteness of cashmere can also to be improved below 5% to more than 90%.And cashmere treatment process according to the present invention is safe to use, and it is easy to implement, it is environmentally protective, it economizes on resources, reduces cost, have good economic benefit and social benefit, be suitble to promote the use of.
Description
Technical field
The present invention relates to fiber bleached stripping treatment technical field, especially a kind of cashmere is stripped technique.
Background technology
Cashmere belongs to a kind of textile raw material of preciousness because it has the characteristics that soft, light and warm, fiber.The product of cashmere
Matter has larger difference due to the kind of goat is different, and appearance color also has larger difference.Cashmere after cleaning is general
For white suede, purple suede, blue or green suede, there is a small amount of red suede.Cashmere natural colour possessed by itself, was using it
It is subject to certain restrictions in journey.For existing cashmere loose fiber in stripping treatment, the stripping treatment time is long, of high cost, and shells
Cashmere after color is susceptible to white and keeps soon, and color is easily turned to be yellow, and what this limited coloured cashmere in degree very much should
With.
Traditional alkaline oxygenated method of fading since hydrogen peroxide with pigment while acting on, can also be produced with feather keratin
Raw strong destruction, so this general method is larger to the injury of hair, and efficiency is not very high, and effect is not bery uniform, and
As the requirement that environmental pollution is administered is higher and higher, current method is to the more demanding of equipment, and investment is larger, and there to have to be special
Stringent control system the shortcomings of.
The content of the invention
It strips technique the object of the present invention is to provide a kind of cashmere, overcome the deficiencies in the prior art is easy to use, green
The advantages that environmental protection economizes on resources, reduction cost, meets requirement.And the whiteness after cashmere is stripped is improved, and reduce
The degree turned to be yellow after cashmere long-time use.
In order to solve the above technical problems, the object of the present invention is achieved like this：A kind of cashmere according to the present invention
It strips technique, in turn includes the following steps：
Step（1）, under the conditions of 30 DEG C by the cashmere weighed into the water, add in pigment separated agent simultaneously stir evenly, then add
Enter cashmere protective agent and stir evenly, add complexing and stabilizer and stir evenly, then after the powder that takes a policy stir evenly；Insurance
Powder keeps 10-15min after stirring evenly under the conditions of 30 DEG C.
Step（2）, be warming up to 60 DEG C, add in complexing agent and simultaneously stir evenly, emptied after keeping 80-120min；Again at 45 DEG C
Under the conditions of wash twice, each washing time be 15min.
Step（3）, by step（2）Obtained cashmere under the conditions of 30 DEG C into the water, add in cashmere protective agent after
And it stirs evenly, add oxidation stabilizers and stirs evenly；It adds hydrogen peroxide and stirs evenly, kept under the conditions of 30 DEG C
5min。
Step（4）, be warming up to 35 DEG C holding 30min；It is emptied after being warming up to 60-65 DEG C of holding 90min again；Again in 45 DEG C of items
It is washed under part twice, each washing time is 15min.
Step（5）, under the conditions of 40 DEG C by step（4）Obtained cashmere into the water, takes a policy and powder and stirs
Uniformly, add oxalic acid and stir evenly, add reduction protectants and stir evenly, add reduction stabilizer and stir equal
It is even, it is emptied again after keeping 30min.
Step（6）, by step（5）Obtained cashmere rinses in cold water, and dries.
As a further illustration of the above scheme, step（1）In, the addition of the pigment separated agent is 2-4%, institute
The protectant addition of cashmere is stated as 0.5-2%, the addition of the complexing stabilizer is 2-4%, the addition of the sodium hydrosulfite
For 0.5-2%；Step（2）In, the addition of the complexing agent is 8-14%.
As a further illustration of the above scheme, step（3）In, the protectant addition of cashmere is 2-4%, described
The addition of oxidation stabilizers is 10-19%, and the addition of the hydrogen peroxide is 100-120%；The addition uniformly accounts for mountain
The percentage of cashmere weight.
As a further illustration of the above scheme, step（5）In, the addition of the sodium hydrosulfite is 1-2%, the oxalic acid
Addition for 2-4%, the addition of the reduction protectants is 1-2%, and the addition of the reduction stabilizer is 0.5-1%；
Reduction stabilizer adds in after shaking up.
As a further illustration of the above scheme, step（1）Middle addition pigment separated agent simultaneously stirs evenly, and adds again after 5min
Enter cashmere protective agent and stir evenly, complexing stabilizer is added after 5min and stir evenly, take a policy powder afterwards again after 5min
It stirs evenly.
As a further illustration of the above scheme, step（5）In take a policy and powder and stir evenly, grass is added after 5min
Acid is simultaneously stirred evenly, reduction protectants are added after 5min and stirred evenly, and reduction stabilizer is added after 5min and is stirred equal
It is even.
As a further illustration of the above scheme, step（2）And step（4）In, the rate of the heating is 1 DEG C/
min。
As a further illustration of the above scheme, the addition is to account for step（1）Middle weighed cashmere weight
Percentage.
The beneficial effects of the invention are as follows：A kind of cashmere according to the present invention is stripped technique, the use of pigment separated agent
It can be separated the chromoprotein of coloured cashmere, chromoprotein can dissolve by oxidation bleaching, be allowed to from cashmere
Upper separation；Further increase the whiteness of cashmere by reducing bleach again.Oxalic acid is in addition to adjusting pH value, moreover it is possible to remove metal from
Son reduces influence of the metal ion to cashmere.And this technique can also strengthen the color fastness of cashmere, improve the use of cashmere
Time limit.By this process, the whiteness rate of descent that cashmere uses for a long time can be used below 5%, it can also be cashmere
Whiteness is improved to more than 90%.And cashmere treatment process according to the present invention is safe to use, easy to implement, environmentally protective, section
About resource reduces cost, has good economic benefit and social benefit, be suitble to promote the use of.
Description of the drawings
Fig. 1 is the heating curve figure of the present invention.
Specific embodiment
The present invention is further described in the following with reference to the drawings and specific embodiments.
Cashmere is stripped the colour removal of coloured cashmere fibres mainly so that the lighter of fiber, so as to
In more product categories can be produced and processed.To stripping for cashmere broken to greatest extent using chemical method in the present invention
Contained various chromoproteins in bad cashmere fibres, at the same to ensure every physical property of cashmere from or small grasped
Make.
It elaborates with reference to Fig. 1 to the present embodiment.The addition for the various auxiliary agents being previously mentioned in the present invention is to account for
In step（1）The percentage of middle weighed cashmere weight.It is involved in the present invention to various auxiliary agents be skill in the art
Known to art personnel, it is commercially available.
A kind of cashmere involved by the present embodiment is stripped technique, is in turn included the following steps：
Step（1）, under the conditions of 30 DEG C by the cashmere weighed into the water, add in pigment separated agent simultaneously stir evenly, 5min
After add cashmere protective agent and stir evenly, complexing stabilizer is added after 5min and is stirred evenly, is added in afterwards again after 5min
Sodium hydrosulfite stirs evenly.Sodium hydrosulfite keeps 10-15min after stirring evenly under the conditions of 30 DEG C.
In this step, the addition of pigment separated agent is 2-4%, and the protectant addition of cashmere is 0.5-2%, and complexing is steady
The addition of agent is determined for 2-4%, and the addition of sodium hydrosulfite is 0.5-2%.
Step（2）, be warming up to 60 DEG C according to the heating rate of 1 DEG C/min, add in complexing agent and simultaneously stir evenly, keep 80-
It is emptied after 120min；It is washed again under the conditions of 45 DEG C twice, each washing time is 15min；In this step, complexing agent plus
Enter amount for 8-14%；
Step（3）, by step（2）Obtained cashmere into the water, is added in after cashmere protective agent and stirred under the conditions of 30 DEG C
It mixes uniformly, adds oxidation stabilizers and stir evenly；After adding hydrogen peroxide and stirring evenly, kept under the conditions of 30 DEG C
5min.The protectant addition of cashmere is 2-4% in this step, and the addition of oxidation stabilizers is 10-19%, and hydrogen peroxide adds
Enter amount for 100-120%.
Step（4）, be warming up to according to the heating rate of 1 DEG C/min 35 DEG C of holding 30min；According still further to 1 DEG C/min
Heating rate be warming up to 60-65 DEG C keep 90min after empty；It washes under the conditions of 45 DEG C twice, washes every time again
Time is 15min.
Step（5）, under the conditions of 40 DEG C by step（4）Obtained cashmere into the water, takes a policy and powder and stirs
Uniformly, oxalic acid is added after 5min and stirs evenly, reduction protectants are added after 5min and stirs evenly, is added after 5min
Reduction stabilizer simultaneously stirs evenly, and is emptied again after keeping 30min.In this step, the addition of sodium hydrosulfite is 1-2%, oxalic acid
Addition is 2-4%, and the addition of reduction protectants is 1-2%, and the addition of the reduction stabilizer is 0.5-1%.Reduction is stablized
Agent must shake up before addition.
Step（6）, by step（5）Obtained cashmere rinses in cold water, and dries.
Embodiment one
Selection fineness is 20-30 microns, the clean purple cashmere that average length is 30-50 millimeters.Claim poly- 50 kilograms of goat
Suede, according to 1：5 bath raioes add in water under the conditions of 30 DEG C.
After adding in water stirring, 10min adds in pigment separated agent and stirs evenly, and the addition of pigment separated agent is cashmere
The 4% of weight；Cashmere protective agent is added after 5min and is stirred evenly, the protectant addition of cashmere is cashmere weight
2%；Complexing stabilizer is added after 5min and is stirred evenly, the addition that stabilizer is complexed is the 4% of cashmere；After 5min again after
The powder that takes a policy stirs evenly, and the addition of sodium hydrosulfite is the 2% of cashmere.Sodium hydrosulfite is protected after stirring evenly under the conditions of 30 DEG C
Hold 15min.
Heating rate according to 1 DEG C/min is warming up to 60 DEG C, adds in complexing agent and stirs evenly, the addition of complexing agent is
The 14% of cashmere weight；It is emptied after keeping 120min again；It is washed again under the conditions of 45 DEG C twice, each washing time is
15min。
By the cashmere by washing under the conditions of 30 DEG C into the water, add in after cashmere protective agent and stir evenly, sheep
The protectant addition of suede is the 4% of the red weight of goat；It adds oxidation stabilizers and stirs evenly, the addition of oxidation stabilizers
It measures as 19%；After adding hydrogen peroxide and stirring evenly, the addition of hydrogen peroxide is 120%；5min is kept under the conditions of 30 DEG C.
Heating rate according to 1 DEG C/min is warming up to 35 DEG C of holding 30min；According still further to the heating speed of 1 DEG C/min
Rate empties after being warming up to 65 DEG C of holding 90min；It is washed again under the conditions of 45 DEG C twice, each washing time is 15min.
Under the conditions of 40 DEG C by the obtained cashmere of above-mentioned steps into the water, take a policy and powder and stir evenly, protect
The addition of dangerous powder is the 2% of cashmere weight；Oxalic acid is added after 5min and is stirred evenly, the addition of oxalic acid is cashmere
For 4%；Reduction protectants are added after 5min and are stirred evenly, the addition of reduction protectants is the 2% of cashmere weight；5min
After add reduction and stabilizer and stir evenly, the addition for reducing stabilizer is the 1% of cashmere weight；After holding 30min again
Emptying.Reduction stabilizer must shake up before addition.
It is cold at 30 DEG C by the above-mentioned cashmere after handled by sodium hydrosulfite, oxalic acid, reduction protectants and reduction stabilizer
It rinses, and dries in water.
According to the cashmere handled by this technique, looked by sight and find that wool hair color reaches regulation requirement, and hair color ratio
Hair color before is more beautiful vivid.
Embodiment two
Selection fineness is 20-30 microns, the clean cyan cashmere that average length is 30-50 millimeters.Claim poly- 50 kilograms of goat
Suede, according to 1：5 bath raioes add in water under the conditions of 30 DEG C.
After adding in water stirring, 10min adds in pigment separated agent and stirs evenly, and the addition of pigment separated agent is cashmere
The 2% of weight；Cashmere protective agent is added after 5min and is stirred evenly, the protectant addition of cashmere is cashmere weight
0.5%；Complexing stabilizer is added after 5min and is stirred evenly, the addition that stabilizer is complexed is the 2% of cashmere；After 5min again
After the powder that takes a policy stir evenly, the addition of sodium hydrosulfite is the 0.5% of cashmere.Sodium hydrosulfite stir evenly after in 30 DEG C of conditions
Lower holding 10min.
Heating rate according to 1 DEG C/min is warming up to 60 DEG C, adds in complexing agent and stirs evenly, the addition of complexing agent is
The 8% of cashmere weight；It is emptied after keeping 80-min again；It is washed again under the conditions of 45 DEG C twice, each washing time is 15min.
By the cashmere by washing under the conditions of 30 DEG C into the water, add in after cashmere protective agent and stir evenly, sheep
The protectant addition of suede is the 2% of the red weight of goat；It adds oxidation stabilizers and stirs evenly, the addition of oxidation stabilizers
It measures as 10%；After adding hydrogen peroxide and stirring evenly, the addition of hydrogen peroxide is 100%；5min is kept under the conditions of 30 DEG C.
Heating rate according to 1 DEG C/min is warming up to 35 DEG C of holding 30min；According still further to the heating speed of 1 DEG C/min
Rate empties after being warming up to 60 DEG C of holding 90min；It is washed again under the conditions of 45 DEG C twice, each washing time is 15min.
Under the conditions of 40 DEG C by the obtained cashmere of above-mentioned steps into the water, take a policy and powder and stir evenly, protect
The addition of dangerous powder is the 1% of cashmere weight；Oxalic acid is added after 5min and is stirred evenly, the addition of oxalic acid is cashmere
For 2%；Reduction protectants are added after 5min and are stirred evenly, the addition of reduction protectants is the 1% of cashmere weight；5min
After add reduction and stabilizer and stir evenly, the addition for reducing stabilizer is the 0.5% of cashmere weight；After keeping 30min
It empties again.Reduction stabilizer must shake up before addition.
It is cold at 20 DEG C by the above-mentioned cashmere after handled by sodium hydrosulfite, oxalic acid, reduction protectants and reduction stabilizer
It rinses, and dries in water.
According to the cashmere handled by this technique, looked by sight and find that wool hair color reaches regulation requirement, and hair color ratio
Hair color before is more beautiful vivid.
The preferred embodiment of the present invention described in detail above.It should be appreciated that those of ordinary skill in the art without
Creative work is needed according to the present invention can to conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be in the protection domain being defined in the patent claims.
Claims (8)
- The technique 1. a kind of cashmere is stripped, which is characterized in thatIt in turn includes the following steps：Step（1）, under the conditions of 30 DEG C by the cashmere weighed into the water, add in pigment separated agent simultaneously stir evenly, then add Enter cashmere protective agent and stir evenly, add complexing and stabilizer and stir evenly, then after the powder that takes a policy stir evenly；Insurance Powder keeps 10-15min after stirring evenly under the conditions of 30 DEG C；Step（2）, be warming up to 60 DEG C, add in complexing agent and simultaneously stir evenly, emptied after keeping 80-120min；Again in 45 DEG C of conditions Twice, each washing time is 15min for lower washing；Step（3）, by step（2）Obtained cashmere into the water, is added in after cashmere protective agent and stirred under the conditions of 30 DEG C It mixes uniformly, adds oxidation stabilizers and stir evenly；It adds hydrogen peroxide and stirs evenly, kept under the conditions of 30 DEG C 5min；Step（4）, be warming up to 35 DEG C holding 30min；It is emptied after being warming up to 60-65 DEG C of holding 90min again；Again under the conditions of 45 DEG C Twice, each washing time is 15min for washing；Step（5）, under the conditions of 40 DEG C by step（4）Into the water, take a policy powder and stirs evenly obtained cashmere, It adds oxalic acid and stirs evenly, add reduction protectants and stir evenly, add reduction stabilizer and stir evenly, protect It is emptied again after holding 30min；Step（6）, by step（5）Obtained cashmere rinses in cold water, and dries.
- The technique 2. cashmere as described in claim 1 is stripped, which is characterized in thatStep（1）In, the addition of the pigment separated agent is 2-4%, and the protectant addition of cashmere is 0.5-2%, The addition of the complexing stabilizer is 2-4%, and the addition of the sodium hydrosulfite is 0.5-2%；Step（2）In, the addition of the complexing agent is 8-14%.
- The technique 3. cashmere as described in claim 1 is stripped, which is characterized in thatStep（3）In, the protectant addition of cashmere is 2-4%, and the additions of the oxidation stabilizers is 10-19%, institute The addition for stating hydrogen peroxide is 100-120%.
- The technique 4. cashmere as described in claim 1 is stripped, which is characterized in that step（5）In, the addition of the sodium hydrosulfite For 1-2%, the addition of the oxalic acid is 2-4%, and the addition of the reduction protectants is 1-2%, and the reduction stabilizer adds Enter amount for 0.5-1%；It is added in after reduction stabilizer shakes up.
- The technique 5. cashmere as described in claim 1 is stripped, which is characterized in that step（1）Middle addition pigment separated agent is simultaneously stirred It mixes uniformly, cashmere protective agent is added after 5min and is stirred evenly, complexing stabilizer is added after 5min and stir evenly, 5min The powder that takes a policy afterwards again afterwards stirs evenly.
- The technique 6. cashmere as described in claim 1 is stripped, which is characterized in that step（5）In take a policy and powder and stir equal It is even, oxalic acid is added after 5min and stirs evenly, reduction protectants are added after 5min and stirs evenly, is added after 5min also Former stabilizer simultaneously stirs evenly.
- The technique 7. cashmere as described in claim 1 is stripped, which is characterized in that step（2）And step（4）In, the heating Rate be 1 DEG C/min.
- The technique 8. cashmere as described in claim 2,3 or 4 is stripped, which is characterized in that the addition is to account for step （1）The percentage of middle weighed cashmere weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711282246.2A CN108085958A (en) | 2017-12-07 | 2017-12-07 | A kind of cashmere is stripped technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711282246.2A CN108085958A (en) | 2017-12-07 | 2017-12-07 | A kind of cashmere is stripped technique |
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| CN108085958A true CN108085958A (en) | 2018-05-29 |
Family
ID=62174187
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| CN201711282246.2A Pending CN108085958A (en) | 2017-12-07 | 2017-12-07 | A kind of cashmere is stripped technique |
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| CN109082877A (en) * | 2018-08-27 | 2018-12-25 | 江苏阳光股份有限公司 | A kind of bleaching process of purple cashmere |
| CN113322663A (en) * | 2021-03-30 | 2021-08-31 | 江苏联宏纺织有限公司 | Decolorizing process for blue velvet and purple velvet |
| CN113529399A (en) * | 2021-08-13 | 2021-10-22 | 宁夏新澳羊绒有限公司 | Low-phosphorus decoloring process for colored cashmere |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109082877A (en) * | 2018-08-27 | 2018-12-25 | 江苏阳光股份有限公司 | A kind of bleaching process of purple cashmere |
| CN113322663A (en) * | 2021-03-30 | 2021-08-31 | 江苏联宏纺织有限公司 | Decolorizing process for blue velvet and purple velvet |
| CN113322663B (en) * | 2021-03-30 | 2023-03-10 | 江苏联宏纺织有限公司 | Green velvet and purple velvet decoloring process |
| CN113529399A (en) * | 2021-08-13 | 2021-10-22 | 宁夏新澳羊绒有限公司 | Low-phosphorus decoloring process for colored cashmere |
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Application publication date: 20180529 |