CN1667180A - Soybean protein fiber whitening process - Google Patents
Soybean protein fiber whitening process Download PDFInfo
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- CN1667180A CN1667180A CNA2005100383777A CN200510038377A CN1667180A CN 1667180 A CN1667180 A CN 1667180A CN A2005100383777 A CNA2005100383777 A CN A2005100383777A CN 200510038377 A CN200510038377 A CN 200510038377A CN 1667180 A CN1667180 A CN 1667180A
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Abstract
The invention relates to a whitening technology for soyabean protein fiber that belongs to whitening process field of textile materials. It includes fiber weighing, wadding, whitening, dehydrating, feather-feeding, and drying. The feature of the invention is that the whitening includes the following steps: water washing, reverting whitening, three steps of water washing, oxidation whitening, hot water washing, room temperature water washing, neutralizing, and oiling. The advantage of the invention includes: solving the problem of fussy process, costly, declining fiber mightiness, and polluting the environment that the technology in existence has; and can satisfy the demand of leveling grade and vividness of the fabric product.
Description
Technical field
The present invention relates to a kind of whitening process of soybean fiber, belong to the bleaching processing technique field of textile material.
Background technology
Soybean fiber is the original fiber of China, with the soybean meal after fuel-displaced is raw material, adopts the biochemical industry engineering to extract globulin, through auxiliary agent and the grafting of hydroxyl high polymer, certain density protein spinning solution is made in copolymerization, blend, forms through the wet spinning process spinning again.This fiber has good etc. the premium properties of feel, the gloss as the real silk, moisture transported permeable, skin-friendly and biocidal property as the cashmere, is a kind of green environment-friendly fabric raw material.
Though soybean fiber has aforesaid many premium properties, but also there is weak point, its fiber itself presents ecru, and owing to its colored component and formation reason are not fully got clear as yet, add that the fiber humidity absorption and release is fast, therefore adopt conventional steps in sequence to be: fiber is weighed, wadding, pressure cotton, bleaching, dehydration, feed hair, stoving process is difficult to obtain desirable whiteness, bring the problem of equalization, vividness difference for the dyeing and finishing of fabric, thereby restricted applying of this fabric.
At present, at home, be not seen in the technology introduction that soybean fiber itself is brightened in the outer patent documentation.For example: document CN1350077A discloses ecological azelon and natural fabric spun yarn product and technology of preparing thereof, wherein preparation technology comprise spinning, weave, dyeing and postfinishing process.Adopt neutral dye in the dyeing; promoter is that faintly acid, level dyeing material are for acid, defoamer are deep-dyeing agent, softener is for neutrality, protective agent and brightening agent is faintly acid, dying of faintly acid material is auxiliary agent, bleaching; normal temperature and pressure single bath process or two-bath process are made dyeing (seeing the 2nd page second section of the document); the related dyeing of this technical scheme, bleaching are at soybean fiber blend fibre product after spinning with natural fiber, not to the bleaching of soybean fiber itself, brighten and give enlightenment.
Document CN1376817A and document CN1429838A respectively at be slough azelon in acetalation technology the formaldehyde under residual and from soybean protein isolate, do not relate to the technology enlightenment that soybean fiber is bleached, brightened equally.
The existing report in non-patent literature, adopt conventional oxygen to float to float reduction and method such as float and reach certain whiteness with oxygen, yet this method for bleaching has certain reduction influence to the performance of fiber as powerful, protein content, causes the flexibility of fiber, glossiness not ideal enough.The dyeing and finishing technology characteristics (seeing this article 3.3.1-3.3.3) of soybean fiber fabric mentioned in ecological textile process technology one literary composition (2002 the 6th phase 82-84 pages or leaves in weaving Leader), and 3.3.1 has pointed out the alkali resistance of soybean fiber and the chemical property of oxidative resistance; 3.3.2 pointed out the heat resistance of soybean fiber and the physical property of wrinkle resistance; 3.3.3 narrated three aspects should noting in the dyeing of soybean fiber fabric and the stamp, promptly to warm tones shallow in look dyeing praise highly and adopt REACTIVE DYES, deep colour dyeing is recommended to adopt acidity and premetallized dye, ACID DYES is adopted in look dyeing suggestion in the cool colour.As if these technology enlightenments be helpless to brightening of soybean fiber itself brought any technological borrowing.Xi'an University of Engineering Science ﹠ Technology journal the 17th volume the 3rd phase (in September, 2003) 236-238 page or leaf " bleaching of soybean protein fibre yarn " literary composition has been introduced reeled yarn by oxidation bleaching and oxidation---and reduction is floated the method bleaching and is handled, fiber is brightened, and the method preferably of its high praise is the oxidation-reduction bleaching.Process conditions are: H
2O
2(27%) 20-26, soda ash 3g/L, scouring agent 2g/L, stabilizing agent 2-3g/L, bath raio 20: 1,90 ℃ of temperature, 60 minutes time, the whiteness after the processing can reach 80.But said method has been ignored many troubles that bleaching is brought to reeled yarn, the one, increase down strand and winding procedure, and the cost that causes bleaching increases; The 2nd, if misoperation very easily causes ravellings in the reeled yarn bleaching process, influence rewinding; The 3rd, this method can cause protein and incur loss after bleaching, influences the performance of fiber.
Xi'an engineering institute journal the 16th volume third phase (in September, 2002) 218-221 page or leaf " catalytic bleaching of soybean protein fiber fabric " literary composition, inquired into bleaching pretreating process condition, cleaning additive and oxygen bleaching process condition draw pretreating process: FeSO to the influence of soybean protein fabric bleaching effect
415% (O.W.F), pH value 4-5,70 ℃ handled 35 minutes; The inferior sodium phosphate of cleaning condition: 0.5g/L, 70 ℃ of cleanings; Conditions of bleaching: bleached 50 minutes for stabilizing agent 5g/L, pH value 7-8.85 ℃.This method reckons without soybean fiber and has hygroscopicity preferably, be attracted on the fiber after the ferrous sulfate preliminary treatment, be difficult to clean out, cause occurring on the fiber brown spot, the 2nd, use the sodium phosphite cleaning agent, will exist again and discharge the phosphorus-containing wastewater problem of environment pollution caused.
Summary of the invention
The objective of the invention is to provide a kind of bleaching process of soybean fiber, this technology can avoid aforementioned reeled yarn to bleach that existing technology is loaded down with trivial details, ravellings greatly, easily takes place bleaching cost effectively, undermine fiber strength and cause the drawback that protein reduces and avoid aforementioned fabric catalytically bleaching to cause discharge water to satisfy equalization, vividness requirement to the problem of ambient influnence and to obtain desirable whiteness.
The objective of the invention is to reach like this, a kind of whitening process of soybean fiber, it comprises, and fiber is weighed, wadding, pressure cotton, bleaching, dehydration, feed hair, oven dry, and characteristics are: described bleaching may further comprise the steps:
(1) washing is soaked and is placed warm water filling in soybean fiber in the wadding device and after compacting, rises to 35-45 ℃ with the programming rate of 2-5 ℃/min, be incubated draining after 5-10 minute, feeds normal-temperature water cleaning draining after 5-10 minute again;
(2) reducing bleach, add successively and in 4-10 minute, add dispersant 0.3-0.8%, scouring agent 0.3-0.8%, soda ash 2.5-4%, reductant 2.0-4% by the fibre weight percentage, control bath raio 1: 15-20, the programming rate with 2-5 ℃/min rises to 80-95 ℃ then; Be incubated 25-40 minute, be cooled to 80-70 ℃ again after draining;
The washing of (3) three roads, first road washing is for rising to 60-75 ℃ with normal-temperature water by the programming rate of 2-5 ℃/min, be incubated the washing of draining after 5-20 minute, second road for normal-temperature water is risen to 40-60 ℃ by 2-5 ℃ programming rate, be incubated draining after 5-10 minute, the washing of the 3rd road and then wash draining after 5-10 minute with room temperature water;
(4) oxidation bleaching, the Pressure control in the bleaching container is 0.2-0.4MPa/cm
2, add successively and in 3-10 minute, add stabilizing agent 4-7%, soda ash 2-5%, scouring agent 0.2-1%, hydrogen peroxide 20-40% by the fibre weight percentage, control bath raio 1: 20, the programming rate with 2-5 ℃/min rises to 85-95 ℃ then; Be incubated 50-70 minute, be cooled to draining below 75 ℃ again;
(5) hot water wash and room temperature washing, hot water wash are insulations 10-20 minute after water is risen to 60-75 ℃ by the programming rate of 2-5 ℃/min, give draining again, and the room temperature washing is with room temperature washing draining after 5-10 minute;
(6) neutralization, control PH6.5-7.5 rises to 35-45 ℃ by the programming rate of 1-5 ℃/min, be incubated draining after 10-20 minute, when with in the glacial acetic acid and after the end, washes 5-10 minute draining again with room temperature;
(7) oil, add softener 3-5%, organic silicone finishing agent 0.5-2% by fiber weight percentage, to fiber increase profit, increase gentle.
The present invention is a sodium metasilicate at the stabilizing agent described in the oxidation bleaching step.
The advantage of whitening process of the present invention: because it is directly fiber to be brightened processing, avoided prior art to the reeled yarn that is twisted into by fiber and the fabric that is made into handle the technology of being brought loaded down with trivial details, greatly change into this, fiber strength and protein and the discharge water pollution problems to environment ravellings appears, undermine and reduces; Because resulting fibre whiteness can reach the 70-82 Hunter whiteness, can satisfy levelling degree, the vividness requirement of fabric finished product.
Description of drawings
Fig. 1 is a process chart of the present invention.
Fig. 2 is first embodiment of the invention each auxiliary agent joining day, programming rate, temperature retention time, cooling draining schematic diagram in reducing bleach.
Fig. 3 is first embodiment of the invention each auxiliary agent joining day, programming rate, temperature retention time, cooling draining schematic diagram in oxidation bleaching.
Fig. 4 is second embodiment of the invention each auxiliary agent joining day, programming rate, temperature retention time, cooling draining schematic diagram in reducing bleach.
Fig. 5 is second embodiment of the invention each auxiliary agent joining day, programming rate, temperature retention time, cooling draining schematic diagram in oxidation bleaching.
Fig. 6 is third embodiment of the invention each auxiliary agent joining day, programming rate, temperature retention time, cooling draining schematic diagram in reducing bleach.
Fig. 7 is third embodiment of the invention each auxiliary agent joining day, programming rate, temperature retention time, cooling draining schematic diagram in oxidation bleaching.
The specific embodiment
Embodiment 1:
With to being accounted for the 25-55% of total weight of fiber by soybean protein in the fiber, the whitening process that the high-molecular polyvinyl alcohol polymer accounts for dawn soybean fiber among 2D, the 3D that 45-75% synthesizes is an example:
500 kilograms the soybean fiber that weighs up is packed in the wadding device equably, press cotton then, it is 3-4MPa/cm that cotton pressure is pressed in control
2, being put to bleaching then, bleaching comprises following concrete steps:
(1) to filling in soybean fiber Warm Wash and the room temperature washing in the wadding device and after compacting, wherein the temperature of Warm Wash and washing time are for to rise to 35 ℃ by 2 ℃/min programming rate, be incubated draining after 5 minutes, feed room temperature water washing 5-10 minute again, draining, purpose are with the incidental finish of fiber upper epidermis, antistatic additive eccysis;
(2) reducing bleach, add successively and in 4-5 minute, all add the SN-S chelated dispersants 0.3-0.4% that produces by German BASF AG by the fibre weight percentage, good that the D-004 scouring agent 0.3-0.4%, the soda ash 2.5-3% that produce of chemical industry Co., Ltd, the trade mark of being produced by chemical plant, Kunshan, Chinese Jiangsu are the reductant 2.0-3% of A by Chinese Shanghai, control bath raio 1: 20 (weight), the joining day of above-mentioned each auxiliary agent and programming rate and temperature retention time, cooling draining are seen shown in Figure 2.
(3) with hot water, warm water, room temperature water the fiber behind reducing bleach is done the washing of three roads respectively, the controlled condition of three roads washing is respectively normal-temperature water is risen to 60-75 ℃ by 2 ℃/min of programming rate, be incubated 5-10 minute, carry out the Warm Wash in second road after the draining, rise to 40-45 ℃ by 2 ℃ of programming rates. be incubated draining after 5 minutes, do the room temperature washing in the 3rd road, with normal temperature washing draining after 5-6 minute;
(4) to carrying out oxidation bleaching through the fiber after the washing of three roads, add successively and all added sodium metasilicate 4-5%, soda ash 2-3%, the described scouring agent 0.2-0.3% of step (1), hydrogen peroxide 20-25% by the fibre weight percentage in 3-4 minute, the Pressure control in the bleaching vessel is at 0.2MPa/cm
2, bath raio 1: 20 (weight), the joining day of above-mentioned all auxiliary agents and programming rate and temperature retention time, cooling draining are seen shown in Figure 3.
(5) hot water-room temperature washing, rise to 60-65 ℃ by the programming rate of 2-4 ℃/min after insulation 10 minutes, draining is again washed draining after 5 minutes with room temperature then;
(6) add glacial acetic acid neutralization at normal temperatures, control PH6.5 rises to 35 ℃ by the programming rate of 1-2 ℃/min, be incubated and carries out draining after 10 minutes, after the neutralization end, washes 5 minutes draining again with room temperature;
(7) add the arrangement that oils after organic silicone finishing agent 0.5-0.7% by the softener 3% of the UK-100 trade mark that big auspicious chemical industry Co., Ltd generates by Chinese Shanghai of fibre weight percentage, big auspicious chemical industry Co., Ltd generates by Chinese Shanghai the AS-88 trade mark discolors in the fiber after neutralization respectively, make lubricity, the flexibility of fiber obtain increasing, after dehydration, feed hair, oven dry, obtain the soybean fiber of Hunter whiteness 70-73.
Embodiment 2:
Get the cotton type soybean fiber of 1.5D, in blanching step:
(1) temperature of Warm Wash and washing time are incubated draining after 7 minutes for to rise to 37 ℃ by 3 ℃/min programming rate, again with room temperature water washing 7 minutes;
(2) add successively in the reducing bleach and in 5-6 minute, all add by the dispersant 0.4-0.5% among the same embodiment 1 of fibre weight percentage, with among the embodiment 1 scouring agent 0.4-0.5%, soda ash 3-3.5%, with the reductant 3-3.5% among the embodiment 1, control bath raio 1: 18 (weight), the joining day of above-mentioned each auxiliary agent and programming rate and temperature retention time, cooling draining are seen shown in Figure 4.
The hot water wash in (3) first roads rises to 65-70 ℃ by 3 ℃/min, is incubated 10-15 minute, draining, and the Warm Wash in second road rises to 50 ℃ by 3 ℃. be incubated 7 minutes, draining, the room temperature in the 3rd road is washed with normal-temperature water washing draining after 8 minutes;
(4) add successively and all added in 5-6 minute by the stabilizing agent 5-6% among the same embodiment 1 of fibre weight percentage, soda ash 3-4%, scouring agent 0.5-0.6%, hydrogen peroxide 30-35% with among the embodiment 1, the Pressure control in the bleaching vessel is at 0.3MPa/cm
2, bath raio 1: 18 (weight), the joining day of above-mentioned all auxiliary agents and programming rate are seen shown in Figure 5.
(5) rise to 65-70 ℃ by the programming rate of 3 ℃/min after insulation 15 minutes, draining again is then with room temperature washing draining after 7 minutes;
(6) with glacial acetic acid neutralization, control PH7.0 rises to 40 ℃ by the programming rate of 2-3 ℃/min, is incubated and carries out draining after 15 minutes, washes 7 minutes draining again with room temperature;
(7) consumption of softener and organic silicone finishing agent is respectively 3.5-4%, 0.7-1%, and all the other are with embodiment 1, the Hunter whiteness 73-76 of gained fiber.
Embodiment 3:
Get the thin dawn soybean fiber of 1.15D, in blanching step:
(1) temperature of Warm Wash and washing time are incubated draining after 10 minutes for to rise to 45 ℃ by 5 ℃/min programming rate, again with room temperature water washing 10 minutes;
(2) add successively in the reducing bleach and in 9-10 minute, all add dispersant 0.6-0.8%, scouring agent 0.6-0.8%, soda ash 3.5-4%, reductant 3.5-4% by the fibre weight percentage, control bath raio 1: 16 (weight), the joining day of above-mentioned each auxiliary agent and programming rate and temperature retention time, cooling draining are seen shown in Figure 6.
The hot water wash in (3) first roads rises to 70-75 ℃ by 5 ℃/min, is incubated 15-20 minute, draining, and the Warm Wash in second road rises to 55-60 ℃ by 5 ℃. be incubated 10 minutes, draining, the room temperature in the 3rd road is washed with normal-temperature water washing draining after 10 minutes;
(4) add successively and all added stabilizing agent 6-7%, soda ash 4-5%, scouring agent 0.9-1.0%, hydrogen peroxide 35-40% by the fibre weight percentage in 9-10 minute, Pressure control is at 0.4MPa/cm
2, bath raio 1: 16 (weight), Fig. 7 is seen in the joining day of above-mentioned all auxiliary agents and programming rate and temperature retention time, cooling draining.
(5) rise to 70-75 ℃ by the programming rate of 5 ℃/min after insulation 20 minutes, draining again is then with room temperature washing draining after 10 minutes;
(6) in the neutralization, control PH7.5 rises to 45 ℃ by the programming rate of 5 ℃/min, is incubated and carries out draining after 20 minutes, washes 10 minutes draining again with room temperature;
(7) consumption of softener and organic silicone finishing agent is respectively 4-4.5%, 1-1.5%.All the other are with embodiment 1, the Hunter whiteness 78-80 of gained fiber.
Embodiment 4:
Present embodiment is that the thin dawn soybean fiber of 1D is brightened, and it is identical with embodiment 1, embodiment 2, embodiment 3, needs the difference of explanation as follows:
(1) temperature of Warm Wash and washing time be incubateds draining after 8～9 minutes for by 4 ℃/min programming rate to 40～42 ℃, use normal (chamber) warm water to wash draining after 8～9 minutes again;
(2) reducing bleach, dispersant 0.6-0.8%, scouring agent 0.6-0.8%, soda ash 3.0-4.0%, reductant 3.5-3.8% added in 7～8 minutes, control bath raio 1: 17 (weight), by programming rate to 90～92 of 4 ℃/min ℃, be incubated 35 minutes and reduce to 70 ℃ of drainings again;
(3) first road hot water wash be incubateds draining after 16～18 minutes by programming rate to 72～73 of 4 ℃/min ℃, and the second road hot water wash is incubated draining after 7～8 minutes by programming rate to 50～55 of 4 ℃/min ℃, and the 3rd road is that room temperature is washed draining after 8～9 minutes;
(4) oxidation bleaching adds stabilizing agent 5.5～6.5% successively, soda ash 3.5～4.5%, and scouring agent 0.8-0.9% and hydrogen peroxide 35-38%, and in 7-8 minute, add, Pressure control is at 0.35-0.4MPa/cm
2, control bath raio 1: 17 (weight) by programming rate to 90～92 of 4 ℃/min ℃, is incubated 65 minutes and reduces to 75 ℃ of drainings again;
(5) rise to 70-72 ℃ by the programming rate of 4 ℃/min after insulation 15 minutes, draining again uses normal-temperature water (claiming room temperature water again) to wash draining after 8 minutes then;
(6) be neutralized to PH7-7.2, and, be incubated draining after 18 minutes, again with room temperature washing draining after 10 minutes with the programming rate to 40 of pressing 3-4 ℃/min ℃;
(7) adopt the arrangement that oils after softener 4.5-5%, organic silicone finishing agent 1.6-2% discolor, make lubricity, the flexibility of fiber obtain increasing, after dehydration, feed hair, dry, the whiteness of the fiber of acquisition reaches Hunter whiteness 80-82.
Claims (2)
1, a kind of whitening process of soybean fiber, it comprises, and fiber is weighed, wadding, pressure cotton, bleaching, dehydration, feed hair, oven dry, it is characterized in that described bleaching may further comprise the steps:
(1) washing is soaked and is placed warm water filling in soybean fiber in the wadding device and after compacting, rises to 35-45 ℃ with the programming rate of 2-5 ℃/min, be incubated draining after 5-10 minute, feeds normal-temperature water cleaning draining after 5-10 minute again;
(2) reducing bleach, add successively and in 4-10 minute, add dispersant 0.3-0.8%, scouring agent 0.3-0.8%, soda ash 2.5-4%, reductant 2.0-4% by the fibre weight percentage, control bath raio 1: 15-20, the programming rate with 2-5 ℃/min rises to 80-95 ℃ then; Be incubated 25-40 minute, be cooled to 80-70 ℃ again after draining;
The washing of (3) three roads, first road washing is for rising to 60-75 ℃ with normal-temperature water by the programming rate of 2-5 ℃/min, be incubated the washing of draining after 5-20 minute, second road for normal-temperature water is risen to 40-60 ℃ by 2-5 ℃ programming rate, be incubated draining after 5-10 minute, the washing of the 3rd road and then wash draining after 5-10 minute with room temperature water;
(4) oxidation bleaching, the Pressure control in the bleaching container is 0.2-0.4MPa/cm
2, add successively and in 3-10 minute, add stabilizing agent 4-7%, soda ash 2-5%, scouring agent 0.2-1%, hydrogen peroxide 20-40% by the fibre weight percentage, control bath raio 1: 20, the programming rate with 2-5 ℃/min rises to 85-95 ℃ then; Be incubated 50-70 minute, be cooled to draining below 75 ℃ again;
(5) hot water wash and room temperature washing, hot water wash are insulations 10-20 minute after water is risen to 60-75 ℃ by the programming rate of 2-5 ℃/min, give draining again, and the room temperature washing is with room temperature washing draining after 5-10 minute;
(6) neutralization, control PH6.5-7.5 rises to 35-45 ℃ by the programming rate of 1-5 ℃/min, be incubated draining after 10-20 minute, when with in the glacial acetic acid and after the end, washes 5-10 minute draining again with room temperature;
(7) oil, add softener 3-5%, organic silicone finishing agent 0.5-2% by the fibre weight percentage, to fiber increase profit, increase gentle.
2, the whitening process of soybean fiber according to claim 1 is characterized in that at the stabilizing agent described in the oxidation bleaching step be sodium metasilicate.
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|---|---|---|---|
| CNB2005100383777A CN1277018C (en) | 2005-02-17 | 2005-02-17 | Soybean protein fiber whitening process |
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| CNB2005100383777A CN1277018C (en) | 2005-02-17 | 2005-02-17 | Soybean protein fiber whitening process |
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| CN1277018C CN1277018C (en) | 2006-09-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429726B (en) * | 2008-11-11 | 2012-04-04 | 广东溢达纺织有限公司 | Three-in-one yarn fast bleaching method |
| CN103147268A (en) * | 2013-03-26 | 2013-06-12 | 无锡新德印染制品有限公司 | Bleach special for soybean protein fiber printing and dyeing pretreatment and bleaching process thereof |
| CN106087382A (en) * | 2016-07-11 | 2016-11-09 | 山东如意科技集团有限公司 | A kind of dyeing and finishing technology of soybean fiber knitted product |
| CN109972328A (en) * | 2017-12-28 | 2019-07-05 | 安徽省卓创信息科技服务有限公司 | A kind of dyeing and finishing technology of soybean fiber knitted product |
-
2005
- 2005-02-17 CN CNB2005100383777A patent/CN1277018C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429726B (en) * | 2008-11-11 | 2012-04-04 | 广东溢达纺织有限公司 | Three-in-one yarn fast bleaching method |
| CN103147268A (en) * | 2013-03-26 | 2013-06-12 | 无锡新德印染制品有限公司 | Bleach special for soybean protein fiber printing and dyeing pretreatment and bleaching process thereof |
| CN106087382A (en) * | 2016-07-11 | 2016-11-09 | 山东如意科技集团有限公司 | A kind of dyeing and finishing technology of soybean fiber knitted product |
| CN109972328A (en) * | 2017-12-28 | 2019-07-05 | 安徽省卓创信息科技服务有限公司 | A kind of dyeing and finishing technology of soybean fiber knitted product |
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| CN1277018C (en) | 2006-09-27 |
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