CN1164825C - Method for decolouring yak hair - Google Patents
Method for decolouring yak hair Download PDFInfo
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- CN1164825C CN1164825C CNB021196915A CN02119691A CN1164825C CN 1164825 C CN1164825 C CN 1164825C CN B021196915 A CNB021196915 A CN B021196915A CN 02119691 A CN02119691 A CN 02119691A CN 1164825 C CN1164825 C CN 1164825C
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- yakwool
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- yak wool
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Abstract
The present invention relates to a method for decoloring yak wool. The present invention is characterized in that the method comprises the following technical steps of pre-treating yak wool by 5 to 8% of ferrous sulfate, 1.5 to 3% of tartar emetic and 18 to 24% of industrial salt at a temperature of 50 to 70 DEG C for 20 to 40 minutes, flushing the yak wool by cold water, oxidizing and bleaching the yak wool by 15 to 30% of hydrogen peroxide (35%) and 3 to 5% of sodium pyrophosphate at a temperature of 50 to 70 DEG C for 50 to 70 minutes, flushing the yak wool, reducing and bleaching the yak wool by 2 to 5% of whitening agents at a temperature of 45 to 55 DEG C for 15 to 35 minute, flushing the yak wool, softening the yak wool by 3 to 5% of softening agents at a temperature of 15 to 25 DEG C for 25 to 35 minutes and dehydrating and drying the yak wool, wherein the bath ratio is 1: 10, and PH is controlled between 4.5 and 5.
Description
Technical field: the discoloration method that the present invention relates to a kind of yakwool.
Background technology: the yakwool main product belongs to special animal fiber in the Qinghai-Tibet Platean, has the goat cashmere characteristic, sliding glutinous, soft, fine and smooth, good springiness, extremely efficient in preserving heat.Generally between 17um-20um, fineness disperses between 30%-34% the yakwool fineness, and length is generally between 28-35mm.Yakwool more than 95% is dark brown and black, and its true qualities are natural strong looks, and COLOR FASTNESS is very firm.This be because the color of organic colored material molecule by chromophore in the molecular structure because of causing.Existing people adopt following technology to decolouring yak hair is general: former suede cleans (hair detergent 6-10%, industrial soda 3-5%) → add chemical assistant (35% hydrogen peroxide 15%, sodium bicarbonate 5%%, sodium pyrophosphate 12%, ferrous sulfate 10%, sodium formaldehyde sulfoxylate 15%, brightening agent 8%) → be warming up to 50-60 minute → flushing with clean water → dewatered drying of 90 ℃ → insulation.Bath raio 1: 12-16.Adopt this technology good decolorizing effect, decolouring evenly, but bigger to the damage of yakwool filament, fibrous fracture and fibre length damage are generally between 10%-16%.Simultaneously, destroy serious to yakwool fiber surface scale structure.The feel hardening has harsh feeling, has lost some characteristic of yakwool to a certain extent.Because fibre damage is serious, make decolouring finished product suede row yielding low, just increase product cost, wasted resource.
The content of invention: the objective of the invention is to provide a kind of not only can be for yakwool effectively decolours, and reduce the yakwool damage greatly and destroy, effectively reduce the method for decolouring yak hair of decolouring cost.
Technical scheme of the present invention is: the characteristics of this yakwool decolouring velvet figures method are that its technological process is:
One, pre-treatment (oxidizing process)
Ferrous sulfate 5-8%, tartar emetic 1.5-3%, Nacl 18-24%, time 20-40 minute, use cold water flush again by temperature 50-70 ℃;
Two, oxidation bleaching (oxidation-reduction process)
35% hydrogen peroxide 15-30%, sodium pyrophosphate 3-5%, time 50-70 minute, use cold water flush again by temperature 50-70 ℃;
Three, reducing bleach
Brightening agent 2-5%, temperature 45-55 ℃, time 15-35 minute, flushing then;
Four, soft treatment
Softener 3-5%, temperature 15-25%, time 25-35 minute, PH4.5;
At last, dehydration, oven dry.The ratio of chemical assistant is to calculate by the weight of the yakwool of throwing the people in the above-mentioned technical process; Bath raio is 1: 10 in above-mentioned technical process; PH is controlled at 4.5-5.Device therefor is the variegated machine of hair that looses.
Another characteristics of the present invention are to also have one to clean ox suede technology before described pre-treatment process, are about to the liquid that raw material ox suede places the remover of 8%-15%, clean temperature 50-60 ℃ 20-60 minute.
Advantage of the present invention and effect are: at first, realized decolouring yak hair, made yakwool change into white or light gray by dark brown.Secondly, make monofilament strength, fracture and the length damage of yakwool be reduced to minimum level as compared with the past.Fibre damage has only 3-4%, and the yakwool scale structure does not have distortion, has improved fiber fineness and brightness, does not lose the imitating property of yakwool fiber, and feel is sliding glutinous, fine and smooth, and can reach the dyeing necessary requirement.Once more, because damage ratio greatly reduces,, reduced cost so also just improved the row yielding of decolouring ox suede.At last, because the successful decolouring of yakwool, and then thoroughly changed black and brown ox suede product, and make the ox suede product can dye shades of colour, so just widen yakwool research and development of products thinking, thereby produced the more yakwool product of multi-color kind.
The specific embodiment: raw material is clean yakwool in embodiment 1:(following examples)
1, pre-treatment: 70 ℃ in ferrous sulfate 5%, tartar emetic 1.5%, Nacl 18%, temperature, 40 minutes time, cold water flush then;
2, oxidation bleaching: hydrogen peroxide (35%) 15%, sodium pyrophosphate 3%, 70 ℃ of temperature, 70 minutes time, flushing then;
3, reducing bleach: brightening agent 2%, 55 ℃ of temperature, 35 minutes time;
4, soft treatment: softener 3%, 25 ℃ of temperature, 35 minutes time, PH4.5;
5, dehydration, oven dry, packing.
Embodiment 2:
1, pre-treatment: ferrous sulfate 6.5%, tartar emetic 2%, Nacl 22%, 60 ℃ of temperature, 30 minutes time, cold water flush;
2, oxidation bleaching: hydrogen peroxide (35%) 20%, sodium pyrophosphate 4%, 60 ℃ of temperature, 60 minutes time, flushing then;
3, reducing bleach: brightening agent 3%, 50 ℃ of temperature, 25 minutes time, flushing then;
4, soft treatment: softness 4%, 20 ℃ of temperature, 30 minutes time, PH4.5;
5, dehydration, oven dry, packing.
Embodiment 3:
1, pre-treatment: ferrous sulfate 8%, tartar emetic 3%, Nacl 24%, 50 ℃ of temperature, 20 minutes time, cold water flush;
2, oxidation bleaching: hydrogen peroxide (35%) 30%, sodium pyrophosphate 5%, 50 ℃ of temperature, 50 minutes time, flushing then;
3, reducing bleach: brightening agent 5%, 45 ℃ of temperature, 15 minutes time;
4, soft treatment: softener 5%, 15 ℃ of temperature, 25 minutes time, PH4.5;
5, dehydration, oven dry, packing.
Claims (2)
1, a kind of method for decolouring yak hair is characterized in that its technological process is:
One, pre-treatment: ferrous sulfate 5-8%, tartar emetic 1.5-3%, Nacl 18-24%,, time 20-40 minute, use cold water flush again by temperature 50-70 ℃;
Two, oxidation bleaching: 35% hydrogen peroxide 15-30%, sodium pyrophosphate 3-5%,, time 50-70 minute, use cold water flush again by temperature 50-70 ℃;
Three, reducing bleach: brightening agent 2-5%, temperature 45-55 ℃, time 15-35 minute, flushing then,
Four, soft treatment: softener 3-5%, temperature 15-25 ℃, time 25-35 minute, PH4.5;
At last, dehydration, oven dry; The ratio of chemical assistant is to calculate by the weight of the yakwool of throwing the people in the above-mentioned technical process; Bath raio is 1: 10 in above-mentioned technical process; PH is controlled at 4.5-5.
2, a kind of method for decolouring yak hair as claimed in claim 1 is characterized in that also having before described pre-treatment process one to clean ox suede technology, is about to the liquid that the raw material yakwool places the 8%-15% remover, cleans temperature 50-60 ℃ 20-60 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021196915A CN1164825C (en) | 2002-05-18 | 2002-05-18 | Method for decolouring yak hair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021196915A CN1164825C (en) | 2002-05-18 | 2002-05-18 | Method for decolouring yak hair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1381641A CN1381641A (en) | 2002-11-27 |
| CN1164825C true CN1164825C (en) | 2004-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021196915A Expired - Fee Related CN1164825C (en) | 2002-05-18 | 2002-05-18 | Method for decolouring yak hair |
Country Status (1)
| Country | Link |
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| CN (1) | CN1164825C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100352993C (en) * | 2005-07-29 | 2007-12-05 | 华南理工大学 | Bleaching method of fenther fabric |
| CN102634971A (en) * | 2012-05-03 | 2012-08-15 | 新疆大学 | One-bath two-stage decoloring process for colored cashmere and auxiliaries |
| CN102817227B (en) * | 2012-08-14 | 2014-07-02 | 安徽舒城县翰文运动用品有限责任公司 | Feather decolorization treatment process |
| CN103243543B (en) * | 2013-05-27 | 2015-03-04 | 宁夏荣昌绒业集团有限公司 | Decoloration method of colored cashmere loose fiber |
| CN103911709B (en) * | 2014-04-25 | 2015-06-10 | 江南大学 | Yakwool-cashmere blended folded yarn and manufacturing process thereof |
| CN104047156B (en) * | 2014-06-30 | 2016-02-10 | 石哲文 | A kind of cashmere cold bleaching agent and method for bleaching thereof |
| CN105369585B (en) * | 2014-08-25 | 2017-09-01 | 江苏欣隆羽绒有限公司 | A kind of coloured eider down decolouring method of whitening |
| CN104389065A (en) * | 2014-12-16 | 2015-03-04 | 江南大学 | Decolored/primary color yakwool blended section-color nicked yarn and production method thereof |
| CN105177984A (en) * | 2015-04-02 | 2015-12-23 | 宁夏中银绒业股份有限公司 | Improved purple cashmere decoloring technology |
| CN105821642A (en) * | 2016-04-25 | 2016-08-03 | 沙洲职业工学院 | Process for discoloring camel hair fibers |
| CN108755105A (en) * | 2018-06-14 | 2018-11-06 | 宁夏双维绒制品有限公司 | A kind of decolouring yak hair technique |
| CN112981646A (en) * | 2021-02-07 | 2021-06-18 | 康宝莱(宁波)织造有限公司 | Method for manufacturing yak wool loop yarn |
| CN113026339B (en) * | 2021-04-12 | 2023-06-20 | 中国农业科学院兰州畜牧与兽药研究所 | Decoloring method for yak hair |
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2002
- 2002-05-18 CN CNB021196915A patent/CN1164825C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1381641A (en) | 2002-11-27 |
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Granted publication date: 20040901 |