CN102719960B - Cotton fiber, aloe fiber and viscose fiber blended yarn and yarn spinning process thereof - Google Patents
Cotton fiber, aloe fiber and viscose fiber blended yarn and yarn spinning process thereof Download PDFInfo
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- CN102719960B CN102719960B CN201210227959.XA CN201210227959A CN102719960B CN 102719960 B CN102719960 B CN 102719960B CN 201210227959 A CN201210227959 A CN 201210227959A CN 102719960 B CN102719960 B CN 102719960B
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- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention discloses cotton fiber, aloe fiber and viscose fiber blended yarn and a yarn spinning process thereof. The blended yarn comprises the components by fiber-content blended ratio: 50 percent of cotton fiber, 30 percent of aloe fiber and 20 percent of viscose fiber, and the fibers are spun into the yarn through a blending process. The aloe fiber and the viscose fiber are subjected to coating mixing, and card slivers formed through working procedures such as blowing and cotton carding and cotton-fiber fine combing slivers are subjected to sliver mixing to form the yarn. A compact Siro spinning technique and the reasonable raw material collocation are adopted, so that the problems that the fiber of the aloe fiber is short, the viscose fiber is easy to deform, the elastic recovery properties are poor, the abrasive resistance is poorer, the fiber is not resistant to acid and the like are solved, and the advantages of the aloe fiber, the viscose fiber and the cotton fiber are exerted. A mixing mode of one pre-drawing and three mixing-drawing is adopted, the accurate blending ratio is favored, and the components are uniform. The produced single yarn evenness is uniform, the single yarn strength is high, the neps are less, and the yarn defects are less.
Description
Technical field
The present invention relates to spinninging technical field, is specifically related to a kind of cotton fiber, aloe fibre, viscose fiber blended yarn and spinning process thereof.
Background technology
Along with the raising of socioeconomic growing and living standards of the people, the consumption idea of people is constantly updated, quality of life and living environment are more and more paid attention to, also more and more higher to the Functional Requirement of clothes, particularly the requirement of the aspect such as health care, feel, quality of clothes is also constantly improved.
Aloe is a kind of fleshiness herbaceous plant of perennation, its cultivation history is long, as a kind of fully natural green plant integrating medicine, beauty treatment, health care, food and view and admire, aloe is subject to constantly pursuing of the developed country consumers such as Japan and the United States already, and has started " aloe " upsurge in the world rapidly.The effect of aloe in beautifying face and moistering lotion obtains popular extensive concern especially, and tool passes in the superior cosmetics of external 80% all containing aloe.Aloe contains abundant natural VE, C, A and B family vitamin: mineral element (as potassium, zinc, selenium etc.); Amino acid etc., these are all the basic nutrition elements keeping the body youth to be everlasting.In addition, if aloe polysaccharide, phenolic compound etc. are all beauty and skin care compositions specific to aloe.These special compositions, together with basic beautifying nourishing element, complete the beautifying skin-protection function that aloe is good jointly.Aloe fibre characteristic is mainly manifested in: dyeability is good, and normal temperature easily contaminates, bright-colored, COLOR FASTNESS is high; Wearability is good, and comfortableness is good, because it has good tensility and recovery, antistatic behaviour and not easily pilling; Feel, soft, smooth; Bright colors, gorgeous, drapability is good; Be easy to safeguard, there is good pollution resistance, and oven dry of can machine-washing, durability is good.The chemistry of aloe fibre and physical property closely cotton, has good hygroscopicity, wet putting, comfortable especially with the fabric dress of its processing.In textile process process, not easily cause gathering of electrostatic, the spinnability of blend fibre can be improved with synthetic fiber blending, be beneficial to processing.Meanwhile, have again good dyeability, the color of various lovely luster dyed by available multiple dyestuff.But aloe fibre is based on short fiber, and not resistance to temperature, needs just can overcome these shortcomings with other fiber blend.
Viscose refers to the alpha-cellulose extracted from the cellulosic materials such as timber and plant straw, or is raw material with cotton linter, through being processed into spinning solution, then through artificial fibre that wet spinning is made.Viscose has good hygroscopicity, and under general atmosphere condition, regain is about 13%.Significantly expand after moisture absorption, diameter increase can reach 50%, thus under fabric after water feel harden, shrinkage factor is large.The fracture strength of common viscose fiber is less than cotton, is about 1.6 ~ 2.7cN/dtex; Elongation at break is greater than cotton, is 16% ~ 22%; Wet strong decline many, be about dry strong by 50%, hygrometric state extends increases about 50%.Its modular ratio cotton is low, and be easily out of shape under Smaller load, and elastic recovery is poor, therefore fabric easily extends, poor dimensional stability.The chemical composition of viscose is similar to cotton, so more alkaline-resisting and not acidproof, but all more cotton difference of alkaline-resisting acid resistance.The dyeability of viscose is similar to cotton, and dyeing chromatogram is complete, and dyeability is good.In addition the thermal property of viscose is also similar to cotton, and density, close to cotton, is 1.50 ~ 1.52g/cm
3.
The merits and demerits that aloe fibre, viscose and cotton fiber have them different, need to carry out mix spinning with other fiber, how to select different cultivars, other fibers of different proportion mix with bamboo fibre, and adopt which kind of spinning process just can spin out properties all preferably yarn, will be that those skilled in the art have technical problem to be solved.
Summary of the invention
The object of the invention is to design a kind of cotton fiber, aloe fibre, viscose fiber blended yarn and spinning process thereof, this blended yarn not only had cotton fiber advantage, but also there is the feature of aloe fibre, viscose, yarn strength is higher and cost is lower.
For achieving the above object, one of technical scheme of the present invention is: a kind of cotton fiber, aloe fibre, viscose fiber blended yarn, it is characterized in that: described blended yarn comprises the cotton fiber that fiber content blending ratio is 50%, the aloe fibre of 30%, the viscose of 20%, the line density of described viscose is 1.33dtex, by above-mentioned fiber by blended weave spun yarn.
Two of technical scheme of the present invention is: design a kind of cotton fiber, the spinning process of blended yarn that aloe fibre, viscose fiber blended yarn combine, and this blended weave comprises following processing step:
A, opening and cleaning step: the technological principle that should adopt " many pines are few to be beaten, and many recovery are few to be got rid of, and beats to comb generation " at opening and cleaning step, uses automatic plucker, mixed cotton slitter, opener, cotton feeder, lapper in opening and cleaning step; On griping cotton machine, bag is wanted evenly, and density wants consistent, cuts height and fills and leads up, ensure to capture evenly, Beater Speed controls at 740r/min, and grab cotton dolly and often run one week decline 3mm, the distance that blade stretches out rib is generally 1-6mm, the speed of service of dolly controls at 2.0r/min, mixing and blowing is confidential skips porcupine hired roughneck, and the speed of duplicate rows hired roughneck is arranged on 650-800r/min, and opener speed control is built in 480-600r/min, lapper speeds control is at 720r/min, and the speeds control of rolling roller is at 11r/min; The aloe fibre lap length formed after opening and cleaning step is 27 meters, meter Chong Wei 410 grams, and the heavy uneven rate of rice is less than 1.0%; The lap length that viscose is formed after opening and cleaning step is 27 meters, meter Chong Wei 390 grams, and the heavy uneven rate of rice is less than 1.0%; The lap length that cotton fiber is formed after opening and cleaning step is 36 meters, meter Chong Wei 420 grams, and the heavy uneven rate of rice is less than 1.0%;
B, carding step: adopt and suitably improve cylinder speed, suitable reduction cover plate speed, doffer speed, the technological principle of spacing of suitable amplification cylinder and cover plate, the speed of cylinder is arranged on 300-360r/min, the speed of licker-in is arranged on 800-950r/min, and the speeds control of cover plate is at 50-65mm/min; Doffer speed controls at 18-26r/min, and cylinder and cover plate 5 are spaced and be respectively 0.19mm, 0.15mm, 0.13mm, 0.13mm, 0.19mm from import to outlet; Aloe fibre weight of card sliver is 18.2g/5m, and knot is assorted to be controlled at 4/g, and the uneven rate of weight is less than 3.0%; Viscose weight of card sliver is 18.2g/5m, and knot is assorted to be controlled at 4/g, and the uneven rate of weight is less than 3.0%;
C, mixing in doubling step: when producing aloe fibre, viscose to carry out pre-also, pre-and be that 3 aloe fibre bars are pre-also with 2 viscose bars, then carry out three times and mix also, and suitably reduce the speed of a motor vehicle, sliver exporting speed controls at 260-280m/min;
D, Roving Frames: the technological principle adopting " spacing greatly; large twist factor; little first break draft ", back zone drafting multiple controls at 1.3-1.4, and front roller centre-to-centre spacing controls at 8mm, middle roller centre-to-centre spacing controls at 24mm, rear roller centre-to-centre spacing controls at 32mm, and ingot speed control is built in 940r/min, and twist factor controls at 98-108, machinery total draft multiple controls at 9-10, and fixing quantity is at 3.0-4.0g/10m;
E, spinning process: adopt SEILE textile technology, Spinning Draft Zone is the feeding of double joint rove, stroke wants little grasp, control at about 6-7mm, larger back zone is adopted to space and the technological principle of larger back zone drafting multiple, back zone drafting multiple controls at 1.38-1.50, front roller centre-to-centre spacing controls at 44mm, rear roller centre-to-centre spacing controls at 73mm, ingot speed control is built in 14300r/min, and spacing block is 2.2mm, and twist factor controls at 335-360, front roller speeds control is at 193r/min, and total draft multiple controls at 45-55;
F, winding procedure: winder speed is arranged on 1000-1350r/min.
3, spinning process as claimed in claim 2, it is characterized in that: in carding step, pin cloth adopts little operating angle, shortly spins chemical fibre pin cloth, Bearded-needle knitted cloth model is AC2025*1660, doff clothing model is AD4030*1890, taker-in clothing model is AT5615*05611, and flat-clothing model is MCZ-30 type.
Wherein, pre-and and to back zone drafting multiple be strengthened in the lump, three also will reduce back zone drafting multiple, pre-also back zone drafting multiple controls at 1.7-1.85, back zone drafting multiple in the lump controls at 1.7-1.85, two and back zone drafting multiple control at 1.6-1.75, three and back zone drafting multiple control at 1.5-1.65.
Wherein, in described mixing in doubling step, pre-and be that 3 aloe fibres and 2 viscose bar carded slivers are pre-also, fixing quantity is at 17.0-18.5g/5m, and front roller spaces and controls at 12mm, and middle roller spaces and controls at 5mm, and rear roller spacing controls at 19mm.
Wherein, in described drawing process, first time mix and be 3 pre-and the fiber carded sliver and 3 combing cotton fibre carded slivers mix also, fixing quantity is at 16-17.5g/5m, front roller spaces and controls at 10mm, and middle roller spacing controls at 5mm, and rear roller spacing controls at 19mm; Second time mix and be 6 in the lump after the carded sliver mix also, fixing quantity is at 15-16.5g/5m, and front roller spaces and controls at 10mm, and middle roller spacing controls at 5mm, and rear roller spacing controls at 19mm; Third time mix and be 6 second time mix and after the carded sliver mix also, fixing quantity is at 15-16.5g/5m, and front roller spaces and controls at 10mm, and middle roller spacing controls at 5mm, and rear roller spacing controls at 19mm.
Wherein, in described winding procedure, winder adopts SMARO automatic winder, and is equipped with the electronic yarn clearer of the different fine measuring ability of Wu Site QUANTUM2 type band.
The invention has the beneficial effects as follows: the present invention carries out bag to aloe fibre and viscose and mixes, through the carded sliver that the operation such as blowing, comb and parallel cotton fibers prior to spinning is formed, carry out that bar is mixed forms yarn again with cotton fiber yarn, adopt compact-siro spinning process, rational material matching, the fiber solving aloe fibre is short, and viscose is easily out of shape, and elastic recovery is poor, ABRASION RESISTANCE is poor, the problem such as not acidproof, has played the advantage of aloe fibre, viscose and cotton fiber.Adopt pre-also three mixed hybrid modes also, be conducive to blending ratio accurate, uniform composition, the single Yarn Evenness produced is even, and single thread force is high, and cotton knot is few, and yarn defect is few.Yarn variety can give fabric good fluffy, flexibility, good elasticity effect, solves easy wrinkle resistance and the dimensional stability problems of textile goods, and take health, comfortableness and the warmth retention property of fabric are improved further.
Detailed description of the invention
Below in conjunction with embodiment, the specific embodiment of the present invention is further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
Embodiment 1.
1, raw material: fiber content blending ratio is the cotton fiber of 50%, the aloe fibre of 30%, the viscose fiber of 20%.Cotton fiber grade is 230A Xinjiang medium staple cotton, and aloe fibre specification is 1.67dtex*38mm, and short rayon fiber specification is 1.33dtex*38mm.The hybrid mode that three kinds of raw materials form three component yarns is bar and mixes.
Yarn number: 14.7tex.
2, spinning technological process: FA002A type automatic plucker---A035D type mixed cotton slitter---FA106 type opener---A092E type cotton feeder---A076E lapper---A186G carding machine---aloe and viscose glue give drafting+combing sliver---FA311 type drawing frame---THF4433 Speed frames---FA506 type fine spining machine---SMARO type automatic winder.
3, each procedure technology configuration and production measure.
3.1 opening and cleaning step.Aloe and viscose, free from admixture, only has a small amount of fault, and as hard silk, doubling, according to the performance of raw material, should implement the technological principle of " many pines are few to be beaten, and many recovery are few to be got rid of, and beats to comb generation " at opening picking.Strike effect will relax, and adopt kirschner beater, the too fast easy damaged fiber of Beater Speed, speed is excessively slow, and shredding is not enough.On FA002A type griping cotton machine, bag is wanted evenly, density wants consistent, cut height to fill and lead up, ensure to capture evenly, Beater Speed 740r/min, grab cotton dolly and often run one week decline 3mm, the distance that blade stretches out rib is generally 1-6mm, to be that 2.0r/min, A035D type mixing and blowing is confidential skip porcupine hired roughneck to the speed of service of dolly, and the speed of duplicate rows hired roughneck will suitably reduce, generally be arranged on 650-800r/min, FA106 speed is 480-600r/min, A076E speed is 720r/min, and the speed of rolling roller is 11r/min.
Quality index will ask for an interview to table 1.
Table 1
| Project | Lap Chang Du ﹝ meter ﹞ | Lap meter Chong ﹝ Ke ﹞ | Meter Chong not even rate ﹝ % ﹞ |
| Aloe | 27 | 410 | Be less than 1.0 |
| Viscose glue | 27 | 390 | Be less than 1.0 |
| Cotton | 36 | 420 | Be less than 1.0 |
3.2 carding step.
Due to viscose glue and aloe fibre long, regularity is good, and containing assorted, carding step based on combing, should make fiber individualized, and falls low-fiber damage to greatest extent.The slightly high load that can alleviate dial of speed of cylinder, strengthen a point comb, speed is generally arranged on 300-360r/min, the speed of licker-in will reduce, be conducive to the transfer of fiber, speed is generally arranged on 800-950r/min, because raw material is containing assorted few, can reduce the speed of cover plate, general control is at 50-65mm/min; Doffer speed is slightly low is advisable, and is generally 18-26r/min, is conducive to improving web quality.In order to reduce filling of fiber, abundant combing, spacing of cylinder and cover plate is slightly bigger, and 5 space for 0.23mm*0.20mm*0.20mm*0.20mm*0.23mm.
Carding needle cloth model is selected and is wanted rationally, should ensure that fiber has enough Carding Degree, also to ensure that pin cloth transfer release performance is good simultaneously, pin cloth adopts little operating angle, shortly spins chemical fibre pin cloth, to reduce fiber laydown, select Bearded-needle knitted cloth model to be AC2025*1660, doff clothing model is AD4030*1890, taker-in clothing model is AT5615*05611, and flat-clothing model is MCZ-30 type.
Quality index will ask for an interview to table 2.
Table 2
| Project | The Liang of Dinging ﹝ g/5m ﹞ | Jie Za ﹝ grain/g ﹞ | Web | Weight not Yun Shuais ﹝ % ﹞ |
| Aloe | 18.2 | 4 | Top grade | Be less than 3.0 |
| Viscose glue | 18.2 | 4 | Top grade | Be less than 3.0 |
3.3 mixing in doubling step.
In order to reduce the weight unevenness of strip, make aloe and viscose fiber blending than accurate, when producing, aloe viscose glue will carry out in advance also.The too high easy generation electrostatic of speed, twines roller and roller, suitably can reduce the speed of a motor vehicle.
Process configuration is in table 3.
Table 3
3.4 Roving Frames.
Adopt and space greatly, large twist factor, little first break draft technological principle, because spun yarn is SEILE textile kind, regular roving feeding to meet on spun yarn under the confidential prerequisite asked by design maximum.To control tension in the roving in production process well, reduce the tension difference between size yarn.
Process configuration is in table 4.
Table 4
3.5 spinning process.
Siro-spun yarn is the parallel feeding Spinning Draft Zone of rove two being kept a determining deviation, and the yarn after drawing-off exports through front roller and merges twisting.Spun yarn stroke wants grasp less than normal, generally at 6-7mm.In order to better gather fiber, adopt upper and lower horn mouth.Because spinning-drafting multiple is about 50 times, efficient draft process can be adopted, use two pressure bar top pin.SEILE textile filoplume is few, close structure, and steel traveler resistance in running is large, and must configure the steel traveler adapted with it, we adopt PG
14254 type bearing steel rings, 772
8/
0the sapphire blue steel traveler of nanometer.Roll surfaces will have enough grasping forces to fiber, and wrapping phenomena does not occur, and SEILE textile stroke is little, and rubber roll easily produces concave, should adopt and not process 65
0soft rubber roll.
Process configuration is in table 5.
Table 5
Yarn quality index is in table 6.
Table 6
3.6 winding procedure.
The main task of winding procedure removes yarn defect, reduces visible defect, produces the good cylinder yarn that is shaped, and the clear technique initialization of electricity is wanted rationally, and spinner will strengthen sense of responsibility, and yarn sub-thread will be rigid in checking up, and winder speed is generally arranged on 1000-1350r/min,
SMARO automatic winder is equipped with Wu Site QUANTUM3 type electronic yarn clearer.
The clear main technologic parameters of electricity is in table 7.
Table 7
| NSL1 | NSL2 | NSL3 | NLS4 | MSL5 | T1 | T2 | T3 |
| 250*0.4 | 140*1.5 | 80*6.0 | 59*17.0 | 26*110.0 | -50%*2.0 | -40%*16 | -25%*150.0 |
The performance indications of blended yarn are in table 8.
Table 8
| Bar does (cv%) | Details (-50%) | Slubbing (+50%) | Cotton knot (+200%) | CVB | Filoplume (H) | Single thread fracture strength | Ten myriametre yarn defects |
| 12.35 | 0 | 11 | 21 | 1.4 | 2.5 | 13.4 | 3.0 |
Claims (6)
1. the spinning process of a cotton fiber, aloe fibre, viscose fiber blended yarn, it is characterized in that: blended yarn comprises the cotton fiber that fiber content blending ratio is 50%, the aloe fibre of 30%, the viscose of 20%, the line density of described viscose is 1.33dtex, described spinning process is blended weave, comprises following processing step:
A, opening and cleaning step: the technological principle that should adopt " many pines are few to be beaten, and many recovery are few to be got rid of, and beats to comb generation " at opening and cleaning step, uses automatic plucker, mixed cotton slitter, opener, cotton feeder, lapper in opening and cleaning step; On griping cotton machine, bag is wanted evenly, and density wants consistent, cuts height and fills and leads up, ensure to capture evenly, Beater Speed controls at 740r/min, and grab cotton dolly and often run one week decline 3mm, the distance that blade stretches out rib is generally 1-6mm, the speed of service of dolly controls at 2.0r/min, mixing and blowing is confidential skips porcupine hired roughneck, and the speed of duplicate rows hired roughneck is arranged on 650-800r/min, and opener speed control is built in 480-600r/min, lapper speeds control is at 720r/min, and the speeds control of rolling roller is at 11r/min; The aloe fibre lap length formed after opening and cleaning step is 27 meters, meter Chong Wei 410 grams, and the heavy uneven rate of rice is less than 1.0%; The lap length that viscose is formed after opening and cleaning step is 27 meters, meter Chong Wei 390 grams, and the heavy uneven rate of rice is less than 1.0%; The lap length that cotton fiber is formed after opening and cleaning step is 36 meters, meter Chong Wei 420 grams, and the heavy uneven rate of rice is less than 1.0%;
B, carding step: adopt and suitably improve cylinder speed, suitable reduction cover plate speed, doffer speed, the technological principle of spacing of suitable amplification cylinder and cover plate, the speed of cylinder is arranged on 300-360r/min, the speed of licker-in is arranged on 800-950r/min, and the speeds control of cover plate is at 50-65mm/min; Doffer speed controls at 18-26r/min, and cylinder and cover plate 5 are spaced and be respectively 0.19mm, 0.15mm, 0.13mm, 0.13mm, 0.19mm from import to outlet; Aloe fibre weight of card sliver is 18.2g/5m, and knot is assorted to be controlled at 4/g, and the uneven rate of weight is less than 3.0%; Viscose weight of card sliver is 18.2g/5m, and knot is assorted to be controlled at 4/g, and the uneven rate of weight is less than 3.0%;
C, mixing in doubling step: when producing aloe fibre, viscose to carry out pre-also, pre-and be 3 aloe fibre bars with 2 viscose bars in advance also; Then carry out three times to mix also, and suitably reduce the speed of a motor vehicle, sliver exporting speed controls at 260-280m/min;
D, Roving Frames: the technological principle adopting " spacing greatly; large twist factor; little first break draft ", back zone drafting multiple controls at 1.3-1.4, and front roller centre-to-centre spacing controls at 8mm, middle roller centre-to-centre spacing controls at 24mm, rear roller centre-to-centre spacing controls at 32mm, and ingot speed control is built in 940r/min, and twist factor controls at 98-108, machinery total draft multiple controls at 9-10, and fixing quantity is at 3.0-4.0g/10m;
E, spinning process: adopt SEILE textile technology, Spinning Draft Zone is the feeding of double joint rove, stroke wants little grasp, control at about 6-7mm, larger back zone is adopted to space and the technological principle of larger back zone drafting multiple, back zone drafting multiple controls at 1.38-1.50, front roller centre-to-centre spacing controls at 44mm, rear roller centre-to-centre spacing controls at 73mm, ingot speed control is built in 14300r/min, and spacing block is 2.2mm, and twist factor controls at 335-360, front roller speeds control is at 193r/min, and total draft multiple controls at 45-55;
F, winding procedure: winder speed is arranged on 1000-1350r/min.
2. spinning process as claimed in claim 1, it is characterized in that: in carding step, pin cloth adopts little operating angle, shortly spins chemical fibre pin cloth, Bearded-needle knitted cloth model is AC2025*1660, doff clothing model is AD4030*1890, taker-in clothing model is AT5615*05611, and flat-clothing model is MCZ-30 type.
3. spinning process as claimed in claim 2, it is characterized in that: pre-and and to back zone drafting multiple be strengthened in the lump, three also will reduce back zone drafting multiple, pre-also back zone drafting multiple controls at 1.7-1.85, back zone drafting multiple in the lump controls at 1.7-1.85, two and back zone drafting multiple control at 1.6-1.75, three and back zone drafting multiple control at 1.5-1.65.
4. spinning process as claimed in claim 2, it is characterized in that: in described mixing in doubling step, pre-and be that 3 aloe fibres and 2 viscose bar carded slivers are pre-also, fixing quantity is at 17.0-18.5g/5m, front roller spaces and controls at 12mm, middle roller spaces and controls at 5mm, and rear roller spacing controls at 19mm.
5. spinning process as claimed in claim 2, it is characterized in that: in described drawing process, first time mix and be 3 pre-and the fiber carded sliver and 3 combing cotton fibre carded slivers mix also, fixing quantity is at 16-17.5g/5m, front roller spaces and controls at 10mm, middle roller spacing controls at 5mm, and rear roller spacing controls at 19mm; Second time mix and be 6 in the lump after the carded sliver mix also, fixing quantity is at 15-16.5g/5m, and front roller spaces and controls at 10mm, and middle roller spacing controls at 5mm, and rear roller spacing controls at 19mm; Third time mix and be 6 second time mix and after the carded sliver mix also, fixing quantity is at 15-16.5g/5m, and front roller spaces and controls at 10mm, and middle roller spacing controls at 5mm, and rear roller spacing controls at 19mm.
6. spinning process as claimed in claim 2, is characterized in that: in described winding procedure, and winder adopts SMARO automatic winder, and is equipped with the electronic yarn clearer of the different fine measuring ability of Wu Site QUANTUM2 type band.
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