CN103334190B - A kind of extra-high pure cotton combed yarn and spinning technique thereof - Google Patents
A kind of extra-high pure cotton combed yarn and spinning technique thereof Download PDFInfo
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Abstract
The present invention discloses a kind of extra-high pure cotton combed yarn and spinning technique thereof, and raw cotton employing percentage by weight is the Egyptian cotton of 15% ~ 25%, cotton and 40% ~ 50% the Xinjiang Long staple cotton of U.S. of 25% ~ 35% carries out mixture, is spun into the purified cotton yarns of 200 ~ 300S.Blowing carding operation that spinning technique comprises the steps: (1); (2) combing process; (3) mixing in doubling step; (4) Roving Frames; (5) spinning process; (6) winding procedure.By above-mentioned mixture scheme, raw cotton can be realized and have that Egyptian cotton fineness is thin, maturity good concurrently, the advantages such as U.S. cotton intensity is high, be as good as fibre and Xinjiang Long staple cotton length is long, reach special high grade yarn produce in requirement to the performance indications such as fibre length, length CV value, mic value, fineness, intensity of raw cotton.The production of above-mentioned technique special high grade yarn under can realizing big ration rove, improves spinning efficiency, ensures yarn quality simultaneously.
Description
Technical field
The present invention relates to a kind of extra-high pure cotton combed yarn and spinning technique thereof.
Background technology
At present, the RING SPINNING being realized twisting by spindle rotation is spinning method the most traditional, also be on current market consumption at most, the most general spinning method, technology is very ripe, although there is the Advanced Spinning Technologies that a lot of production efficiency is high, technological process is short at present, as Revolving cup spinning, Air-Jet Spinning etc., especially Air-Jet Spinning, employing High Rotation Speed air-flow makes fibre bundle false twisting looping resultant yarn and revolutionizes the twisting mechanism of RING SPINNING, but these spinning methods still cannot replace RING SPINNING on adaptability to raw materials and yarn oeverall quality.Can be see application number: 201010520259.0; Denomination of invention is: a kind of heating blended yarn and spinning process thereof.Current RING SPINNING remains the topmost spun yarn mode of production.The most popular problem of current textile industry by improving to realize the production of high-quality spun yarn to traditional ring spinning technology.Especially the ring throstle that current domestic main flow uses all adopts three roller two district weighing draft, and drafting multiple is restricted, and spinning efficiency is lower, cannot realize the production of extra-high count yarn under general quantitative or big ration rove.For this, the present invention adopts and produce extra-high pure cotton combed yarn on a kind of super draft fine spining machine comprising four roller four apron three district weighing draft, and provides corresponding spinning method.
Along with continuing to increase of market competition is strengthened gradually with China textile industry structural adjustment investment, be improve added value of product and the market competitiveness, yarn variety is gradually to highly-branched, differentiation future development.But high grade yarn kind yarn count is thin, powerful low, easily breaks end, especially the special high grade yarn of more than 200S in production, high grade yarn kind is mainly used in producing on high-grade fabric simultaneously, requires high to yarn quality, so the difficulty of producing high grade yarn is larger.The production of current China purified cotton high grade dyed yarn is also in a starting stage, the gap Japanese, Italian etc. with developed country is comparatively large, and improvement opportunity equipment, to improve spinning quality level, improve spinning count, reduce labour intensity be that China's spinning industry is made great efforts and the direction of development.
Summary of the invention
The defect that the present invention seeks to exist for prior art provides a kind of extra-high pure cotton combed yarn and spinning technique thereof.
The present invention for achieving the above object, adopt following technical scheme: a kind of extra-high pure cotton combed yarn, raw cotton employing percentage by weight is the Egyptian cotton of 15% ~ 25%, cotton and 40% ~ 50% the Xinjiang Long staple cotton of U.S. of 25% ~ 35% is carried out mixture, and is spun into the purified cotton yarns of 200 ~ 300S by combing machine.
A spinning technique for extra-high pure cotton combed yarn, comprises the steps:
(1) Blowing carding operation: the technological principle that blowing adopts " frivolous crawl, soft shredding, increasing noil ", suitably reduces each Beater Speed of picker, increases dirt rod and space; Comb and parallel cotton fibers prior to spinning adopts " tightly space, light quantitatively, jogging speed " technological principle, reduce output and quantitatively simultaneously, increase cover plate speed, and control blast, air quantity everywhere well;
(2) combing process: pre-drawing combined roots is 6, and drafting multiple is less than or equal to number of doubling; Bar is also rolled up employing 22 ~ 28 pre-drawings and closes, and cotton rolling quantity maintains about 60g/m; The speed of a motor vehicle of combing machine controls at 175 ~ 280 pincers/min, and its cylinder camber abgle is 115 °, and adopt and retreat to cotton mode, be 4.3mm to cotton length, top comb density domination is at 30 pins/cm ~ 36 pin/cm;
(3) mixing in doubling step: adopt band autoleveller Single D rawing technique, the speed of a motor vehicle of drawing frame controls at 300-350m/min, and yarn 6 also closes, drafting multiple is at about 6 times, design is quantitatively at about 3.0g/m, and roller gauge is 49 × 48 × 51mm, and front roller speed is 150rpm/min;
(4) Roving Frames: ingot speed control is built in 700 ~ 900r/min, regular roving feeding controls at 3.0-4.5g/10m, and roving twist factor controls at 110-120, and roller gauge is 48 × 49 × 50mm, first drafting multiple controls at 1.19 times, and total draft multiple controls at 6.3 times;
(5) spinning process: adopt and installed a kind of compact spinning system-Quan Jufang of major diameter narrow slot type negative pressure hollow roller additional, weighing draft adopts four roller four apron three district's drawing-offs to realize 30 ~ 300 times of super drafts simultaneously; Yarn twist factor is 400-500, and diameter of ring is 34mm, and Hardness is 60 ± 3 degree, and ingot speed is 4000-8500rpm/min; Nip gauge is 2.0mm, before front leather roller, momentum controls between 0-2mm, reel cage pressure is the two ingot of 210 × 120 × 120 × 140N/, and gathering negative pressure is 1200-1800Pa, front roller and in a roller gauge 10.4-11.4mm, in a roller and in two roller gauges be 10.4-30mm, in two rollers and rear roller space for 34-39mm, intermediate draft controls at 1.1-3.0 doubly, and back area draft controls at 1.1-1.4 doubly, proparea drawing-off controls at 10-70 doubly, and total draft controls at 150-300 doubly;
(6) winding procedure: in winding procedure, suitably reduces groove drum winding speed and winder reel cage pressure, simultaneously cleaning yarn passage; Wherein, winder speeds control is at 400 ~ 600rpm/min.
Further, described in step (1), Blowing carding operation also comprises following operation:
1) opener, it adopts kirschner beater, speed 850-900r/min, and card flat cylinder and doff clothing adopt short and close metallic elastic pin cloth, and licker-in adopts close tooth pin cloth;
2) secondary opener, its licker-in speed is 500-600r/min, carding machine cotton feeding roller and licker-in space for 0.03-0.04 inch, and licker-in and cylinder space for 0.006-0.008 inch, and it is 0.008,0.009,0.1 inch that removable cover and cylinder space, cylinder speed is 450-560r/min, cover plate speed is 250-320m/min, and doffer speed is 700-900r/min, and licker-in speed is 860-1060r/min, output speed is 70-90m/min, and Weight control is at 16-20g/5m.
Beneficial effect of the present invention: (1) is by adopting mixture, realize raw cotton and have that Egyptian cotton fineness is thin, maturity good concurrently, the advantages such as U.S. cotton intensity is high, be as good as fibre and Xinjiang Long staple cotton length is long, reach special high grade yarn produce in requirement to the performance indications such as fibre length, length CV value, mic value, fineness, intensity of raw cotton.
(2) spinning process part, complete gathering spin production system, cooperation drawing-off part employing employing four roller four apron three district weighing draft by adopting to install additional, the production of special high grade yarn under realizing big ration rove, improves spinning efficiency, ensures yarn quality simultaneously.
Detailed description of the invention
The present invention is a kind of extra-high pure cotton combed yarn, and raw cotton employing percentage by weight is the Egyptian cotton of 15% ~ 25%, cotton and 40% ~ 50% the Xinjiang Long staple cotton of U.S. of 25% ~ 35% is carried out mixture, and is spun into the purified cotton yarns of 200 ~ 300S by combing machine.
A spinning technique for extra-high pure cotton combed yarn, comprises the steps:
(1) Blowing carding operation: the technological principle that blowing adopts " frivolous crawl, soft shredding, increasing noil ", suitably reduces each Beater Speed of picker, increases dirt rod and space; Comb and parallel cotton fibers prior to spinning adopts " tightly space, light quantitatively, jogging speed " technological principle, reduce output and quantitatively simultaneously, increase cover plate speed, and control blast, air quantity everywhere well;
(2) combing process: pre-drawing combined roots is 6, and drafting multiple is less than or equal to number of doubling; Bar is also rolled up employing 22 ~ 28 pre-drawings and closes, and cotton rolling quantity maintains about 60g/m; The speed of a motor vehicle of combing machine controls at 175 ~ 280 pincers/min, and its cylinder camber abgle is 115 °, and adopt and retreat to cotton mode, be 4.3mm to cotton length, top comb density domination is at 30 pins/cm ~ 36 pin/cm;
(3) mixing in doubling step: adopt band autoleveller Single D rawing technique, the speed of a motor vehicle of drawing frame controls at 300-350m/min, and yarn 6 also closes, drafting multiple is at about 6 times, design is quantitatively at about 3.0g/m, and roller gauge is 49 × 48 × 51mm, and front roller speed is 150rpm/min;
(4) Roving Frames: ingot speed control is built in 700 ~ 900r/min, regular roving feeding controls at 3.0-4.5g/10m, and roving twist factor controls 1.2 ~ 1.4, and roller gauge is 48 × 49 × 50mm, first drafting multiple controls at 1.19 times, and total draft multiple controls at 6.3 times;
(5) spinning process: adopt and installed a kind of compact spinning system-Quan Jufang of major diameter narrow slot type negative pressure hollow roller additional, weighing draft adopts four roller four apron three district's drawing-offs to realize 30 ~ 300 times of super drafts simultaneously; Yarn twist factor is 400-500, and diameter of ring is 34mm, and Hardness is 60 ± 3 degree, and ingot speed is 4000-8500rpm/min; Nip gauge is 2.0mm, before front leather roller, momentum controls between 0-2mm, reel cage pressure is the two ingot of 210 × 120 × 120 × 140N/, and gathering negative pressure is 1200-1800Pa, front roller and in a roller gauge 10.4-11.4mm, in a roller and in two roller gauges be 10.4-30mm, in two rollers and rear roller space for 34-39mm, intermediate draft controls at 1.1-3.0 doubly, and back area draft controls at 1.1-1.4 doubly, proparea drawing-off controls at 10-70 doubly, and total draft controls at 150-300 doubly;
(6) winding procedure: in winding procedure, suitably reduces groove drum winding speed and winder reel cage pressure, simultaneously cleaning yarn passage; Wherein, winder speeds control is at 400 ~ 600rpm/min.
Wherein, described in step (1), Blowing carding operation also comprises following operation: a 1) opener, and it adopts kirschner beater, speed 850-900r/min, card flat cylinder and doff clothing adopt short and close metallic elastic pin cloth, and licker-in adopts close tooth pin cloth; 2) secondary opener, its licker-in speed is 500-600r/min, carding machine cotton feeding roller and licker-in space for 0.03-0.04 inch, and licker-in and cylinder space for 0.006-0.008 inch, and it is 0.008,0.009,0.1 inch that removable cover and cylinder space, cylinder speed is 450-560r/min, cover plate speed is 250-320m/min, and doffer speed is 700-900r/min, and licker-in speed is 860-1060r/min, output speed is 70-90m/min, and Weight control is at 16-20g/5m.
Below in conjunction with detailed description of the invention, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment 1: to install complete poly-spinning equipment pure cotton combed 2.7tex yarn on TH558 tetra-roller super draft ring throstle additional, raw cotton employing percentage by weight is 22% Egyptian cotton, 33% U.S. is cotton, 45% Xinjiang Long staple cotton carries out mixture, and concrete technology step is as follows:
(1) Blowing carding:
Technological process comprises: packet capturing, opener, mixed cotton, secondary opener, removal of impurities, comb and parallel cotton fibers prior to spinning.
Adopt blow-card unit TRUTZSCHLER, concrete equipment and flow process as follows:
BDT, BOBA, AFC type twin shaft stream opener, LvSA type heavy object separator, MM6 type many storehouses blending box, CVT type opener, DX type multicyclone, FBK type fine impurity removal device, TC03 type carding machine.
AFC type twin shaft stream opener adopts kirschner beater, speed 950r/min, CVT opener licker-in speed 600r/min, carding machine cotton feeding roller and licker-in space 40 (1/1000inch), licker-in and cylinder space 8, removable cover and cylinder space 8,9,10, cylinder speed 510r/min, cover plate speed 310m/min, doffer speed 780r/min, licker-in speed 930r/min, output speed 82m/min, Weight control 16g/5m.
Secondary opener operation:
Blowing carding AFC twin shaft stream opener cuts out, CVT Beater Speed 300rpm/min, crosses twice cotton storehouse of MM, makes to mix.Cylinder Speed of Carding Machine 380rpm/min, removable cover and cylinder space be amplified to 9,10,11/1000inch, output speed is 80m/min, Weight control 16g/5m.
Card sliver quality index:
| Weight unevenness | Deviation of weight | Strip short fibre content | Cotton knot (cnt/g) | Impurity (cnt/g) | Bearded mote |
| <0.8％ | <0.8％ | <5.0％ | <40 | <3 | <4 |
(2) combing process:
Adopt Rieter E62 type combing machine, combing machine adopts wide-angle cylinder (110 °), high density top comb (300 pins/100mm).Feed and be configured to 5.2mm to length, the speed of a motor vehicle 280 clamps secondary/min, and hairbrush is accomplished effectively clean, and table top ensures definitely bright and clean in addition, ensures that web evenly exports and carries, cotton noils control more than 22%.
Yarn quality index:
| Weight unevenness | Deviation of weight | Strip short fibre content | Cotton knot (cnt/g) | Impurity (cnt/g) | Bearded mote |
| <1.2％ | <0.8％ | 0 | <18 | 0 | 0 |
(3) mixing in doubling step
Adopt Rieter (Rieter) RSB-D401 autoleveller draw frame, drawing process configuration is strict to be configured by along draft process, in order to not make strip scared, and strip adoption together, use 6 and close, first drawing-off is 1.75 times, total draft is 6 times, roller gauge 49 × 48 × 51mm, front roller speed: 150rpm/min, the surely heavy 15g/5m of sliver.
Drafting quality index:
| Weight unevenness | Deviation of weight | Strip short fibre content | Cotton knot (cnt/g) | Impurity (cnt/g) | Bearded mote |
| <0.6％ | <0.5％ | 0 | <18 | 0 | 0 |
(4) Roving Frames
Adopt Toyota FL100 type Speed frames, use more effective false twister, ingot speed 700rpm/min, rove roller gauge 48 × 49 × 50mm, rove total draft multiple is 6.3 times, and first drawing-off is 1.19 times, roving twist factor 110-120, and rove is heavily 4.5g/10m surely.
Roving yarn quality index:
| Weight unevenness | Deviation of weight | Strip short fibre content | Cotton knot (cnt/g) | Impurity (cnt/g) | Bearded mote |
| <1.4％ | <0.6％ | 0 | <18 | 0 | 0 |
(5) spinning process
Adopt the TH558 tetra-roller super draft ring throstle installing complete poly-spinning equipment additional, twist factor is positioned at about 410, grasp bigger than normal, to increase spun yarn brute force.In order to reduce Unevenness CV, suitable reduction apron Hardness is 60 degree, the two ingot of reel cage pressure 210 × 120 × 120 × 140N/, and move after momentum between 2mm before front leather roller, ingot speed is 7500rPm/min, ensures output, but can not be too high, otherwise steel traveler flies circle seriously.Rings adopts PG13454, and steel traveler model adopts C1ELUdr24/0, proparea 6833E type pressure bar top pin, front nip gauge is 2mm, and 6833B type is sold in middle district, and nip gauge is 2.0mm, gather negative pressure 1400Pa, before in a roller gauge 10.4mm, in one two rear rollers to space 24mm, in two rear rollers to space 34mm, intermediate draft controls at 2.8 times, back area draft controls at 1.2 times, and proparea drawing-off controls at 52.9 times, and total draft controls at 177.8 times.
Quality of spun yarn:
(6) winding procedure
Adopt broken end lifting apparatus, speed setting 600rpm/min.
Embodiment 2: to install complete poly-spinning equipment pure cotton combed 1.9tex yarn on TH558 tetra-roller super draft ring throstle additional, raw cotton employing percentage by weight is 20% Egyptian cotton, 30% U.S. is cotton, 50% Xinjiang Long staple cotton carries out mixture, and concrete technology step is as follows:
(1) Blowing carding:
Technological process comprises: packet capturing, opener, mixed cotton, secondary opener, removal of impurities, comb and parallel cotton fibers prior to spinning.
Adopt blow-card unit TRUTZSCHLER, concrete equipment and flow process as follows:
BDT, BOBA, AFC type twin shaft stream opener, LvSA type heavy object separator, MM6 type many storehouses blending box, CVT type opener, DX type multicyclone, FBK type fine impurity removal device, TC03 type carding machine.
AFC type twin shaft stream opener adopts kirschner beater, speed 950r/min, CVT opener licker-in speed 600r/min, carding machine cotton feeding roller and licker-in space 40 (1/1000inch), licker-in and cylinder space 8, removable cover and cylinder space 8,9,10, cylinder speed 510r/min, cover plate speed 310m/min, doffer speed 780r/min, licker-in speed 930r/min, output speed 82m/min, Weight control 16g/5m.
Secondary opener operation:
Blowing carding AFC twin shaft stream opener cuts out, CVT Beater Speed 300rpm/min, crosses twice cotton storehouse of MM, makes to mix.Cylinder Speed of Carding Machine 380rpm/min, removable cover and cylinder space be amplified to 9,10,11/1000inch, output speed is 80m/min, Weight control 16g/5m.Card sliver quality index:
| Weight unevenness | Deviation of weight | Strip short fibre content | Cotton knot (cnt/g) | Impurity (cnt/g) | Bearded mote |
| <0.8％ | <0.8％ | <5.0％ | <40 | <3 | <4 |
(2) combing process:
Adopt Rieter E62 type combing machine, combing machine adopts wide-angle cylinder (110 °), high density top comb (300 pins/100mm).Feed and be configured to 5.2mm to length, the speed of a motor vehicle 280 clamps secondary/min, and hairbrush is accomplished effectively clean, and table top ensures definitely bright and clean in addition, ensures that web evenly exports and carries, cotton noils control more than 22%.
Yarn quality index:
| Weight unevenness | Deviation of weight | Strip short fibre content | Cotton knot (cnt/g) | Impurity (cnt/g) | Bearded mote |
| <1.2％ | <0.8％ | 0 | <18 | 0 | 0 |
(3) mixing in doubling step
Adopt Rieter (Rieter) RSB-D401 autoleveller draw frame, drawing process configuration is strict to be configured by along draft process, in order to not make strip scared, and strip adoption together, use 6 and close, first drawing-off is 1.75 times, total draft is 6 times, roller gauge 49 × 48 × 51mm, front roller speed: 150rpm/min, the surely heavy 15g/5m of sliver.
Drafting quality index:
| Weight unevenness | Deviation of weight | Strip short fibre content | Cotton knot (cnt/g) | Impurity (cnt/g) | Bearded mote |
| <0.6％ | <0.5％ | 0 | <18 | 0 | 0 |
(4) Roving Frames
Adopt Toyota FL100 type Speed frames, use more effective false twister, ingot speed 700rpm/min, rove roller gauge 48 × 49 × 50mmmm, rove total draft multiple is 6.3 times, and first drawing-off is 1.19 times, roving twist factor 110-120, and rove is heavily 4.5g/10m surely.
Roving yarn quality index:
| Weight unevenness | Deviation of weight | Strip short fibre content | Cotton knot (cnt/g) | Impurity (cnt/g) | Bearded mote |
| <1.4％ | <0.6％ | 0 | <18 | 0 | 0 |
(5) spinning process
Adopt the TH558 tetra-roller super draft ring throstle installing complete poly-spinning equipment additional, twist factor is positioned at about 420, grasp bigger than normal, to increase spun yarn brute force.In order to reduce Unevenness CV, suitable reduction apron Hardness is 60 degree, the two ingot of reel cage pressure 210 × 120 × 120 × 140N/, and move after momentum between 2mm before front leather roller, ingot speed is 5500rPm/min, ensures output, but can not be too high, otherwise steel traveler flies circle seriously.Rings adopts PG13454, and steel traveler model adopts C1ELUdr28/0, proparea 6833E type pressure bar top pin, front nip gauge is 2mm, and 6833B type is sold in middle district, and nip gauge is 2.0mm, gather negative pressure 1300Pa, front roller and in a roller gauge 10.4mm, in a roller and in two roller gauge 24mm, in two rollers and rear roller to space 34mm, intermediate draft controls at 2.3 times, back area draft controls at 1.2 times, and proparea drawing-off controls at 69 times, and total draft controls at 184.2 times.
Quality of spun yarn:
(6) winding procedure
Adopt broken end lifting apparatus, speed setting 600rpm/min.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. a spinning technique for extra-high pure cotton combed yarn, is characterized in that, comprises the steps:
(1) Blowing carding operation: the technological principle that blowing adopts " frivolous crawl, soft shredding, increasing noil ", suitably reduces each Beater Speed of picker, increases dirt rod and space; Comb and parallel cotton fibers prior to spinning adopts " tightly space, light quantitatively, jogging speed " technological principle, reduce output and quantitatively simultaneously, increase cover plate speed, and control blast, air quantity everywhere well;
Described Blowing carding operation also comprises following operation:
1) opener, it adopts kirschner beater, speed 850-900r/min, and card flat cylinder and doff clothing adopt short and close metallic elastic pin cloth, and licker-in adopts close tooth pin cloth;
2) secondary opener, its licker-in speed is 500-600r/min, combing carding machine cotton feeding roller and licker-in space for 0.03-0.04 inch, and licker-in and cylinder space for 0.006-0.008 inch, and it is 0.008,0.009,0.1 inch that removable cover and cylinder space, cylinder speed is 450-560r/min, cover plate speed is 250-320m/min, and doffer speed is 700-900r/min, and licker-in speed is 860-1060r/min, output speed is 70-90m/min, and Weight control is at 16-20g/5m;
(2) combing process: pre-drawing combined roots is 6, and drafting multiple is less than or equal to number of doubling; Bar is also rolled up employing 22 ~ 28 pre-drawings and closes, and cotton rolling quantity maintains 60g/m; The speed of a motor vehicle of combing machine controls at 175 ~ 280 pincers/min, and its cylinder camber abgle is 115 °, and adopt and retreat to cotton mode, be 4.3mm to cotton length, top comb density domination is at 30 pins/cm ~ 36 pin/cm;
(3) mixing in doubling step: adopt band autoleveller Single D rawing technique, the speed of a motor vehicle of drawing frame controls at 300-350m/min, and yarn 6 also closes, drafting multiple is at 6 times, design is quantitatively at 3.0g/m, and roller gauge is 49 × 48 × 51mm, and front roller speed is 150rpm/min;
(4) Roving Frames: ingot speed control is built in 700 ~ 900r/min, and regular roving feeding controls at 3.0-4.5g/10m, and roving twist factor controls at 110-120, roller gauge is 48 × 49 × 50mm, and first drafting multiple controls at 1.19 times, and total draft multiple controls at 6.3 times;
(5) spinning process: adopt and installed a kind of compact spinning system-Quan Jufang of major diameter narrow slot type negative pressure hollow roller additional, weighing draft adopts four roller four apron three district's drawing-offs to realize 30 ~ 300 times of super drafts simultaneously; Yarn twist factor is 400-500, and diameter of ring is 34mm, and Hardness is 60 ± 3 degree, and ingot speed is 4000-8500rpm/min; Nip gauge is 2.0mm, before front leather roller, momentum controls between 0-2mm, reel cage pressure is the two ingot of 210 × 120 × 120 × 140N/, and gathering negative pressure is 1200-1800Pa, front roller and in a roller gauge 10.4-11.4mm, in a roller and in two roller gauges be 10.4-30mm, in two rollers and rear roller space for 34-39mm, intermediate draft controls at 1.1-3.0 doubly, and back area draft controls at 1.1-1.4 doubly, proparea drawing-off controls at 10-70 doubly, and total draft controls at 150-300 doubly;
(6) winding procedure: in winding procedure, reduces groove drum winding speed and winder reel cage pressure, simultaneously cleaning yarn passage; Wherein, winder speeds control is at 400 ~ 600rpm/min.
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