CN102704109B - Flax wet-spun blended yarn and preparation method and spinning frame of flax wet-spun blended yarn - Google Patents
Flax wet-spun blended yarn and preparation method and spinning frame of flax wet-spun blended yarn Download PDFInfo
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Abstract
The invention discloses a flax wet-spun blended yarn comprising flax roves, wherein the flax roves comprise first flax roves and second flax roves, the number difference of the first flax roves and the second flax roves is not larger than 1.2, polyester filament yarns are added in the flax roves to form a flax wet-spun blended yarn main body, and the flax wet-spun blended yarn main body is in an S direction of twist. The invention also discloses a preparation method of flax wet-spun blended yarn. The invention also discloses a spinning frame for preparing the flax wet-spun blended yarn. The preparation method of the flax wet-spun blended yarn comprises the steps of: threading the polyester filaments with the first flax roves and the second flax roves to form the flax wet-spun blended yarn, wherein the flax wet-spun blended yarn is in the S direction of twist. The flax wet-spun blended yarn disclosed by the invention has the advantages of being gorgeous, glossy, stiff and smooth and durable, and needing no ironing.
Description
Technical field
The present invention relates to the blended yarn field, be specially a kind of flax wet blended yarn, flax wet blended yarn system
Preparation Method and fine spining machine.
Background technology
Along with the raising of people's living standard and the quietly variation of aesthetic standards.Pursuing textile product and be the dressing of natural, environment-friendly and green, novel top grade idea, is people's ideal.Also be the dream that the weaving people dreams of, pursues diligently, and flax is to stand in the breach to become one of object of people's favor.
One flat dyadic is the consistent tradition of flax, and owing to its special fiber properties, gauffer is difficult to overcome simultaneously.And compatriots' consumption concept, magnificent, gloss, well-pressed need not press, wear durable etc. run counter to it again.
Existing AB yarn is not wear-resisting, and easily wrinkle, and the existing fine spining machine of producing the AB yarn is to spin the Z twist yarn in design, so that the yarn of producing is harder, feel is not soft like this.In addition, the AB yarn glossiness under the existing manufacturing condition is bad.
Summary of the invention
For solving above problem, the invention provides a kind of magnificent, gloss, well-pressed need not press, wear anti-
Flax wet blended yarn of a specified duration, flax wet blended yarn preparation method and fine spining machine.
The invention provides a kind of flax wet blended yarn, a kind of flax wet blended yarn, comprise flax roving, described flax roving comprises the first flax roving, the second flax roving, polyester filament is mixed in described the first flax roving, the second flax roving, described flax wet blended yarn be S twist with the fingers to.
The percentage that described polyester filament weight content accounts for described flax wet blended yarn gross weight is: 2～3%, and surplus is the first flax roving and the second flax roving, the number difference of described the first flax roving and the second flax roving is no more than 1.2.
The preparation method of flax wet blended yarn of the present invention may further comprise the steps:
S1. choose linen fibre, drafting is processed into flax roving, and the rove that processes is divided into the first flax roving and the second flax roving, then carries out respectively the program of following steps;
S2. described flax roving is carried out preliminary treatment, flax half deguming;
S3. the flax roving after the S2 step is carried out biology enzyme and dye front preliminary treatment poststaining;
S4. the flax roving after the dyeing is carried out the biology enzyme aftertreatment technology;
S5. determine the ratio of described the first flax roving, the second flax roving and polyester filament, processing obtains spun yarn;
S6. to described spun yarn carry out radio frequency drying yarn, choose yarn, winder, packing, obtain finished product.
Wherein, step S2 comprises: rove preliminary treatment and half deguming: pickling: sulfuric acid 3～3.5 g/l, bleeding agent 2～3 g/l, 30 ℃, 20 minutes; Float the Asia: sodium chlorite 0.5～2 g/l, sodium nitrate 0.5～42g/l, 45～50 ℃, 40～60 minutes; Soda boiling: caustic soda 1.5～2 g/l, soda ash 5～7 g/l, 90～95 ℃, 50～60 minutes; Washing: 80 ℃, 10～15 minutes; Washing: 70 ℃, 10～15 minutes; Washing: 50 ℃, 10～15 minutes; The neutralization washing: glacial acetic acid 1.5～2.5 g/l, water at normal temperature were washed 15～25 minutes.
Step S3 comprises: biology enzyme dyes front preliminary treatment: add 4～6g/l compound biological enzyme, 50～55 ℃ of lower insulations 30～40 minutes; Discharge opeing, described compound biological enzyme are that the weight score is lignoenzyme and the pectase of 1:2;
Dyeing: flax roving is divided into the first flax roving and the second flax roving, adds respectively the dyestuff of required dyeing rove weight 4～6%; Circulate and be warming up to 60 ℃ after 10～15 minutes; Be 15～20 minutes → salt adding, 20～25 g/l, glauber salt 15～20 g/l → 10～15 minutes → salt adding of circulation, 20～25 g/l, glauber salt 15～20 g/l → 10～15 minutes → salt adding of circulation, 20～25 g/l, glauber salt 15～20 g/l circulation timei; Circulated 20～25 minutes; Add soda ash 15～20 g/l fixation in 20～30 minutes, circulated 30～40 minutes; Cold wash 10～15 minutes; In and under HCA1.5～2.5 g/l, 20～25 minutes, normal temperature; Hot water wash 60～65 ℃, 10 minutes; Soap: soap 5～6 g/l, 98 ℃, 20～25 minutes; Hot water wash, 60～65 ℃, 10 minutes; Cold wash: 10～15 minutes, under the normal temperature.
Step S4 comprises: the pH value of adjusting solution with soda ash adds biology enzyme BSAGD--MBX3g/l and BSAGD-MB3g/l, is warming up to 60 ℃ of insulation 60min 7～7.5; Not discharge opeing is cooled to 40 ℃; Add post-finishing agent BSAGD-MF2g/l, discharge opeing; 60 ℃ of hot water wash 2 times, each 15 minutes, normal temperature was washed once more afterwards, 15 minutes.
Step S5 comprises: the first flax roving and the second flax roving feed draw zone jointly, together enter twisting, be wound into spun yarn at front roller place and polyester filament afterwards.
Normal twist factor is 0.95, and twist factor of the present invention is than normal large 10～20%.Realize by change gear.
The invention discloses a kind of fine spining machine for preparing above-mentioned flax wet blended yarn, comprise feeding part, drawing-off part, twisting part, coiling and molding part; Feeding part comprises guide strip roller, tank roller, other configures the feeding unit of polyester filament, this feeding unit has guide strip roller and tenslator, drawing-off partly comprises feeding roller pair, drawing rollers pair, the twisting part comprises that twizzle, coiling and molding partly comprise spindle, spindle band, cylinder dish, bobbin; Tenslator makes the speed of polyester filament of feeding identical with drawing rollers speed; The first flax roving, the second flax roving enter tank through guide strip roller, walk around the tank rod and guide feeding roller pair into, enter again drawing rollers pair, polyester filament enters drawing rollers through guide strip roller, join with the first flax roving, the second flax roving, spued by drawing rollers, be wound on the bobbin through twizzle, bobbin is inserted on the spindle, the moving spindle band of cylinder dribbling and spindle with described the first flax roving, the second flax roving and polyester filament twisting winding to bobbin.
The present invention has following beneficial effect: the invention provides a kind of flax wet blended yarn, have advantages of that color is magnificent, gloss, well-pressed need not press, wear durable.The advantage that adds polyester filament on the basis of original AB yarn plays reinforcement, and is wear-resisting crease-resistant; The Z that changes original AB yarn is twisted as S and twists with the fingers, so that the structural relaxation of blended yarn of the present invention, good hand touch; Blended yarn in the preparation method after the post processing of adding biology enzyme is soft, and filoplume is little, good luster.
Description of drawings
Fig. 1 is the fine spining machine structural representation of a kind of flax wet blended yarn of the present invention.
Fig. 2 is spindle band and cylinder dish structural representation among Fig. 1.
The specific embodiment
Can further understand the present invention by specific embodiments of the invention given below, but they not limitation of the invention.Some nonessential improvement and adjustment for those skilled in the art does according to the foregoing invention content also are considered as dropping in protection scope of the present invention.
In addition, unless stated otherwise, the percentage that adopts among the present invention is percetage by weight.
Biology enzyme BSAGD-MBX, BSAGD-MB, BSAGD-MF purchase in pool, Shanghai degree textile technology Co., Ltd and Anhui Photar environment-friendly materials and sell Co., Ltd.
Embodiment 1
1, the preparation of flax roving to be dyeed:
(1) apolegamy → heckling machine of raw material → batching → slivering → (No. 0 drawing frame → 1 road drawing frame → 2 road drawing frames → 3 road drawing frame → finishing drawing frames) road is totally 5 road drafting processing → rove, the rove that processes is divided into the first flax roving and the second flax roving, then carries out respectively the program of following steps;
(2) requirement according to the client is ready to two kinds of flax roving (comprising color, number) and adding polyester filaments after the dyeing.The ratio of deciding at last by the orthogonal experiment of mathematical statistics is: the percentage that described polyester filament weight content accounts for described flax wet blended yarn gross weight is: 2%, surplus is the first flax roving and the second flax roving, and the number difference of the first flax roving and the second flax roving is no more than 1.2;
2, rove preliminary treatment, flax half deguming and dyeing:
(1) rove preliminary treatment and half deguming: pickling: sulfuric acid 3.2 g/l, bleeding agent 2.5g/l, temperature is 30 ℃, time is that float 20 minutes → Asia: sodium chlorite 1.5 g/l, sodium nitrate 1.5g/l, temperature is 48 ℃, time is 50 minutes → soda boiling: caustic soda 1.8 g/l, soda ash 6 g/l, temperature is 92 ℃, time is 55 minutes → washing: temperature is 80 ℃, time is: 12 minutes → washing: temperature was 70 ℃, time is: 12 minutes → washing: temperature was 50 ℃, time is 12 minutes → neutralization washing: glacial acetic acid 2.0 g/l, under the normal temperature, the time is 18 minutes;
(2) determining of dyeing: biology enzyme dyes front preliminary treatment, add compound biological enzyme 5g/l, temperature is that 52 ℃ of temperature retention times are that 35 minutes → discharge opeing → adjustment water level enters dye liquor, dyestuff 5% → circulation is warming up to 18 minutes → salt adding 22g/l of 60 ℃ → circulation after 12 minutes, glauber salt 18 g/l → 12 minutes → salt adding 22g/l of circulation, glauber salt 17 g/l → 12 minutes → salt adding 22g/l of circulation, glauber salt 18 g/l → circulation 22 minutes → add soda ash fixation, reinforced by computer control curve, add the soda ash of total amount 18 g/l → 18 minutes → neutralization of 35 minutes → cold wash of circulation in 25 minutes, HCA1.8g/l, 23 minutes, under the normal temperature → hot water wash, 63 ℃, 10 minutes → soap 5.5 g/l soap, 98 ℃, 22 minutes → hot water wash, 63 ℃, 10 minutes → cold wash, 12 minutes, under the normal temperature;
(3) compound biological enzyme aftertreatment technology and prescription
:
The pH value of adjusting solution with soda ash adds biology enzyme BSAGD--MBX3g/l and BSAGD-MB3g/l, is warming up to 60 ℃ of insulation 60min 7.Not discharge opeing is cooled to 40 ℃.Add post-finishing agent BSAGD-MF2g/l, discharge opeing.60 ℃ of hot water wash 2 times, each 15 minutes, normal temperature was washed once more afterwards, and 15 minutes can finish.
The spun yarn spinning process is determined: twist factor is than normal large 10%;
4, radio frequency drying yarn → choose yarn → winder → packing.
Embodiment 2
1, the preparation of flax roving to be dyeed:
(1) apolegamy → heckling machine of raw material → batching → slivering → (No. 0 drawing frame → 1 road drawing frame → 2 road drawing frames → 3 road drawing frame → finishing drawing frames) road is totally 5 road drafting processing → rove processing, the rove that processes is divided into the first flax roving and the second flax roving, then carries out respectively the program of following steps;
(2) requirement according to the client is ready to two kinds of flax roving (comprising color, number) and adding polyester filaments after the dyeing.The ratio of deciding at last by the orthogonal experiment of mathematical statistics is: the percentage that described polyester filament weight content accounts for described flax wet blended yarn gross weight is: 2.5%, surplus is the first flax roving and the second flax roving, and the number difference of the first flax roving and the second flax roving is no more than 1.2;
2, rove preliminary treatment, flax half deguming and dyeing:
(1) rove preliminary treatment and half deguming: pickling: sulfuric acid 3 g/l, bleeding agent 2g/l, temperature are that 30 ℃, time are that float 20 minutes → Asia: sodium chlorite 0.5 g/l, sodium nitrate 0.5g/l, temperature are that 45 ℃, time are 40 minutes → soda boiling, caustic soda 1.5 g/l, soda ash 5g/l, temperature is that 90 ℃, time are 50 minutes → washing: temperature is that 80 ℃, time are: 10 minutes → washing, temperature is that 70 ℃, time are: 10 minutes → washing, temperature is that 50 ℃, time are 10 minutes → neutralization washing, under glacial acetic acid 1.5g/l, the normal temperature, the time is 15 minutes;
(2) determining of dyeing: biology enzyme dyes front preliminary treatment, compound biological enzyme 4g/l, temperature is that 50 ℃ of temperature retention times are that 30 minutes → discharge opeing → adjustment water level enters dye liquor, dyestuff 4% → circulation is warming up to 15 minutes → salt adding of 60 ℃ → circulation, 20 g/l after 10 minutes, glauber salt 15 g/l → 10 minutes → salt adding of circulation, 20 g/l, glauber salt 15 g/l → 10 minutes → salt adding of circulation, 20 g/l, glauber salt: 15g/l → circulation, time is: 20 minutes → add the soda ash fixation, reinforced by computer control curve, be the soda ash → circulation timei that adds total amount 15 g/l in 20 minutes: the 30 minutes → cold wash time is: 10 minutes → neutralization, HCA1.5g/l, time is: 20 minutes, under the normal temperature → hot water wash, 60 ℃, 10 minutes → soap, soap 5g/l, 98 ℃, 20 minutes → hot water wash, 60 ℃, 10 minutes → cold wash, 10 minutes, under the normal temperature;
(3) compound biological enzyme aftertreatment technology and prescription
:
The pH value of adjusting solution with soda ash adds biology enzyme BSAGD--MBX3g/l and BSAGD-MB3g/l, is warming up to 60 ℃ of insulation 60min 7.5.Not discharge opeing is cooled to 40 ℃.Add post-finishing agent BSAGD-MF2g/l, discharge opeing.60 ℃ of hot water wash 2 times, each 15 minutes, normal temperature was washed once more afterwards, and 15 minutes can finish.
The spun yarn spinning process is determined: twist factor is than normal large 15%;
4, radio frequency drying yarn → choose yarn → winder → packing.
Embodiment 3
1, the preparation of flax roving to be dyeed:
(1) apolegamy → heckling machine of raw material → batching → slivering → (No. 0 drawing frame → 1 road drawing frame → 2 road drawing frames → 3 road drawing frame → finishing drawing frames) road is totally 5 road drafting processing → rove processing, the rove that processes is divided into the first flax roving and the second flax roving, then carries out respectively the program of following steps;
(2) requirement according to the client is ready to two kinds of flax roving (comprising color, number) and adding polyester filaments after the dyeing.The ratio of deciding at last by the orthogonal experiment of mathematical statistics is: the percentage that described polyester filament weight content accounts for described flax wet blended yarn gross weight is: 3%, surplus is the first flax roving and the second flax roving, and the number difference of the first flax roving and the second flax roving is no more than 1.2.
2, rove preliminary treatment, flax half deguming and dyeing:
(1) rove preliminary treatment and half deguming: pickling: sulfuric acid 3.5 g/l, bleeding agent 3 g/l, temperature are that 30 ℃, time are that float 20 minutes → Asia, sodium chlorite 2 g/l, sodium nitrate 42g/l, temperature are that 50 ℃, time are 60 minutes → soda boiling, caustic soda 2 g/l, soda ash 7 g/l, temperature is that 95 ℃, time are 60 minutes → washing, temperature is that 80 ℃, time are: 15 minutes → washing, temperature is that 70 ℃, time are: 15 minutes → washing, temperature is that 50 ℃, time are 15 minutes → neutralization washing, under glacial acetic acid 2.5 g/l, the normal temperature, the time is 25 minutes;
(2) determining of dyeing: biology enzyme dyes front preliminary treatment, compound biological enzyme 6g/l, temperature is that 55 ℃ of temperature retention times are that 40 minutes → discharge opeing → adjustment water level enters dye liquor, dyestuff 6% → circulation is warming up to 20 minutes → salt adding of 60 ℃ → circulation, 25 g/l after 15 minutes, glauber salt 20 g/l → 15 minutes → salt adding of circulation, 25 g/l, glauber salt 20 g/l → 15 minutes → salt adding of circulation, 25 g/l, glauber salt 20 g/l → circulation 25 minutes → add the soda ash fixation are reinforced by computer control curve, added the soda ash of total amount 20 g/l → 40 minutes → cold wash of circulation in 20～30 minutes 15 minutes minutes → in and HCA2.5 g/l, 25 minutes, under the normal temperature → hot water wash, 65 ℃, 10 minutes → soap, soap 6 g/l, 98 ℃, 25 minutes → hot water wash, 65 ℃, 10 minutes → cold wash, 15 minutes, under the normal temperature;
(3) aftertreatment technology: 55 ℃ of dosings, adding SFN3.5g/L, post-finishing agent 3g/L etc. → be warming up to 92 ℃, 40 minutes → 70 ℃ of the washings that neutralize of insulation, 10 minutes → neutralization is washed 60 ℃, 10 minutes → 55 ℃ hot water wash → cold wash, softener 4 g/L, 25 minutes;
The spun yarn spinning process is determined: twist factor is than normal large 20%;
4, radio frequency drying yarn → choose yarn → winder → packing.
Knitting yarn is soft after the biology enzyme post processing, and filoplume is little, good luster.
See also Fig. 1 and Fig. 2, a kind of fine spining machine of flax wet blended yarn comprises feeding part, drawing-off part, twisting part, coiling and molding part.Feeding part comprises guide strip roller 10, tank roller 20, and other configures the feeding unit of polyester filament, and this feeding unit has guide strip roller 30 and tenslator 31, and tenslator 31 makes the speed of polyester filament of feeding identical with drawing rollers speed; Drawing-off partly comprises: feeding roller is to 4, drawing rollers are to 5, the first flax roving, the second flax roving enter tank through guide strip roller, walk around tank rod 20 and guide feeding roller into to 4, enter drawing rollers to 5, polyester filament enters drawing rollers 5 through guide strip roller 30 again, joins with the first flax roving, the second flax roving, spued by drawing rollers 5, then carry out twisting winding and obtain the flax wet blended yarn; The twisting part comprises twizzle 7; Coiling and molding partly comprises spindle 8, spindle band 9, cylinder dish 11, bobbin 6, and bobbin 6 is inserted on the spindle 8, cylinder dish 11 drive spindle bands 9 and spindle 8 with described the first flax roving, the second flax roving and polyester filament twisting winding to bobbin 6.
Wherein, the first flax roving is arranged on the rove cylinder 1;
The second flax roving is arranged on the rove cylinder 2;
Polyester filament is arranged on the rove cylinder 3;
Among above three embodiment, increase the feeding unit of feeding polyester filament at fine spining machine, it is guide strip roller 30, this device is synchronized with drawing rollers 5, polyester filament is fed drawing rollers 5, polyester filament and the first flax roving, the second flax roving are joined at this place, together enter twisting winding and partly twist, be wound into spun yarn.
Be that S twists with the fingers in order to make blended yarn of the present invention, as shown in Figure 2, fine line represents that the Z of prior art twists with the fingers, the S that the technical program that represents the essence solid line adopts twists with the fingers, spun yarn equipment of the present invention is under the condition that does not change original fine spining machine spindle rotating direction, spindle band 9 is moved 1 spindle to tailstock direction, spindle band 9 when mobile, Rotate 180 ° in the direction of the clock.As shown in Figure 2, what fine line represented is that original fine spining machine adds the ruuning situation that Z twists with the fingers, and heavy line is that fine spining machine adds the ruuning situation that S twists with the fingers among the present invention.Simultaneously, along main shaft to headstock side shifting 10mm-12mm, make spindle band 9 on the radial centre lines of cylinder dish 11 on cylinder dish 11.
The flax wet blended yarn that above-mentioned three embodiment make can reach following technical indicator: see Table 1.
Table 1
According to above-mentioned table 1, the flax wet blended yarn that three embodiment make has not only that color is magnificent, gloss, well-pressedly need not press, wear-resisting crease-resistant, structural relaxation, the advantages such as good hand touch.And main technical indicator is all in the national standard scope.
Claims (5)
1. the preparation method of a flax wet blended yarn, described flax wet blended yarn, comprise flax roving, described flax roving comprises the first flax roving, the second flax roving, polyester filament is mixed in described the first flax roving, the second flax roving, it is characterized in that, may further comprise the steps:
S1. choose linen fibre, drafting is processed into flax roving, is divided into the first flax roving and the second flax roving, then carries out respectively the program of following steps;
S2. described flax roving is carried out preliminary treatment, flax half deguming;
S3. the flax roving after the S2 step is carried out biology enzyme and dye front preliminary treatment poststaining;
S4. the flax roving after the dyeing is carried out the biology enzyme aftertreatment technology;
S5. determine the ratio of described the first flax roving, the second flax roving and polyester filament, processing obtains spun yarn;
S6. to described spun yarn carry out radio frequency drying yarn, choose yarn, winder, packing, obtain finished product.
2. the preparation method of flax wet blended yarn according to claim 1 is characterized in that, step S2 comprises:
Rove preliminary treatment and half deguming: pickling: sulfuric acid 3～3.5 g/l, bleeding agent 2～3 g/l, 30 ℃, 20 minutes; Float the Asia: sodium chlorite 0.5～2 g/l, sodium nitrate 0.5～42g/l, 45～50 ℃, 40～60 minutes; Soda boiling: caustic soda 1.5～2 g/l, soda ash 5～7 g/l, 90～95 ℃, 50～60 minutes; Washing: 80 ℃, 10～15 minutes; Washing: 70 ℃, 10～15 minutes; Washing: 50 ℃, 10～15 minutes; The neutralization washing: glacial acetic acid 1.5～2.5 g/l, water at normal temperature were washed 15～25 minutes.
3. the preparation method of flax wet blended yarn according to claim 1 is characterized in that, step S3 comprises:
Biology enzyme dyes front preliminary treatment: add 4～6g/l compound biological enzyme, 50～55 ℃ of lower insulations 30～40 minutes; Discharge opeing, described compound biological enzyme are that the weight score is lignoenzyme and the pectase of 1:2;
Dyeing: flax roving is divided into the first flax roving and the second flax roving, adds respectively the dyestuff of required dyeing rove weight 4～6%; Circulate and be warming up to 60 ℃ after 10～15 minutes; Be 15～20 minutes → salt adding, 20～25 g/l, glauber salt 15～20 g/l → 10 ~ 15 minutes → salt adding of circulation, 20～25 g/l, glauber salt 15～20 g/l → 10～15 minutes → salt adding of circulation, 20～25 g/l, glauber salt 15～20 g/l circulation timei; Circulated 20～25 minutes; Add soda ash 15～20 g/l fixation in 20～30 minutes, circulated 30～40 minutes; Cold wash 10～15 minutes; In and under HCA1.5～2.5 g/l, 20～25 minutes, normal temperature; Hot water wash 60～65 ℃, 10 minutes; Soap: soap 5～6 g/l, 98 ℃, 20～25 minutes; Hot water wash, 60～65 ℃, 10 minutes; Cold wash: 10～15 minutes, under the normal temperature.
4. the preparation method of flax wet blended yarn according to claim 1, it is characterized in that, step S4 comprises: the pH value of adjusting solution with soda ash adds biology enzyme BSAGD--MBX3g/l and BSAGD-MB3g/l, is warming up to 60 ℃ of insulation 60min 7～7.5; Not discharge opeing is cooled to 40 ℃; Add post-finishing agent BSAGD-MF2g/l, discharge opeing; 60 ℃ of hot water wash 2 times, each 15 minutes, normal temperature was washed once more afterwards, 15 minutes.
5. the preparation method of flax wet blended yarn according to claim 1, it is characterized in that, step S5 comprises: the first flax roving and the second flax roving feed draw zone jointly, together enter twisting, be wound into spun yarn at front roller place and polyester filament afterwards.
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| CN101665998B (en) * | 2008-09-04 | 2013-04-03 | 东华大学 | Spinning device for concentrating composite yarns |
| CN101492843B (en) * | 2008-12-31 | 2010-05-12 | 武汉科技学院 | Positioning spinning method of embedded system |
| CN102011230B (en) * | 2010-11-15 | 2013-01-16 | 东华大学 | Method for producing flax wet-spun high count yarns and strands by Sirofil |
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2012
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