CN108950770A - A kind of short fine pure yarn of polyamide fibre and its spinning process - Google Patents
A kind of short fine pure yarn of polyamide fibre and its spinning process Download PDFInfo
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- CN108950770A CN108950770A CN201810882080.6A CN201810882080A CN108950770A CN 108950770 A CN108950770 A CN 108950770A CN 201810882080 A CN201810882080 A CN 201810882080A CN 108950770 A CN108950770 A CN 108950770A
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- polyamide fibre
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Classifications
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
- D01G15/02—Carding machines
- D01G15/12—Details
- D01G15/14—Constructional features of carding elements, e.g. for facilitating attachment of card clothing
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
- D01G15/02—Carding machines
- D01G15/12—Details
- D01G15/14—Constructional features of carding elements, e.g. for facilitating attachment of card clothing
- D01G15/20—Feed rollers; Takers-in
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
- D01G15/02—Carding machines
- D01G15/12—Details
- D01G15/40—Feeding apparatus
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The application belongs to textile technology field, the short fine pure yarn of specially a kind of polyamide fibre and its spinning process include the following steps: the short fine health pretreatment → hand fed → FA106 opener → FA046 type vibrating cotton box cotton feeding → A076F type single beater scutcher → FA201B type carding machine → FA317A type first drawing frame → FA317A type finishing drawing frame → FA415A type fly frame → EJM128K type spinning frame → NO.21C type automatic winder of polyamide fibre.
Description
Technical field
The application belongs to textile technology field, the short fine pure yarn of specially a kind of polyamide fibre and its spinning process.
Background technique
Instantly, the life style of natural health and outdoor leisure activity are increasingly subject to praise highly, and sports and leisure wind also becomes
The important directions of fabric product development.By superior wearability and better than the hydrophily of terylene, in addition other new technologies and new
The research and development and application of technique, polyamide fibre product are receive more and more attention in the field.
Short fine high (the specific resistance coefficient column second) electrostatic factors of its volume resistivity of polyamide fibre are big, pure spinning production difficulty
Greatly, the unrealized short pure spinning of fibre of high-volume polyamide fibre domestic at present.
In recent years, it is researched and developed for constantly enhancing enterprise competitiveness, the pure spinning series of products of my company fibre short to polyamide fibre, by
High in the short fine specific resistance of polyamide fibre, electrostatic factors are big, lead to that blowing cotton roll molding in process of production is poor, quiet after carding step networking
Electricity adhere to viscous smooth roll, suspension, fall the problems such as net, leading broken strip, mixing in doubling step, Roving Frames winding lead to not it is normal, it is raw
It is very big to produce difficulty.
Summary of the invention
To realize above-mentioned technical goal, the invention adopts the following technical scheme:
A kind of preparation process of the short fine pure yarn of polyamide fibre includes the following steps: the short fine health pretreatment → hand fed of polyamide fibre
→ FA106 opener → FA046 type vibrating cotton box cotton feeding → A076F type single beater scutcher → FA201B type carding machine →
FA317A type first drawing frame → FA317A type finishing drawing frame → FA415A type fly frame → EJM128K type spinning frame →
NO.21C type automatic winder.
Preferably, the short fine health pre-treatment step of the synthetic fibre are as follows: pure water is heated to 45 DEG C, it is rear that electrostatic agent is added and stirs
Uniformly be sprayed at after mixing uniformly on the short fine raw material of polyamide fibre, after wrap up with plastic cloth and is placed on health in 40 DEG C of health preserving rooms and handle 24
Hour, in case lower process uses；The mass ratio of the pure water and electrostatic agent is 20:1.
Preferably, the hired roughneck of the FA106 opener uses kirschner beater, and opener Beater Speed is 480r/min.
Preferably, being lowered to cotton photoelectricity of FA046 type vibrating cotton box cotton feeding, vibrate and to cotton amount be modulated to minimum, press
Roller loading is adjusted to maximum.
Preferably, the Beater Speed of the A076F type single beater scutcher is 960r/min, and the speed of coiled roller is
10r/min, blowing pound weight are 10.0KG.
Preferably, crawler type compacting devices are installed at the cotton carding smooth roll of the FA201B type carding machine additional, at cotton carding faucet
Install leading guide strip roller additional.
Preferably, the working condition when FA201B type carding machine carries out carding step is 28 DEG C of temperature, humidity 75%.
Preferably, the cylinder speed of the FA201B type carding machine is 326r/min, cover plate speed 127mm/min, vehicle
Fast 41m/min, licker-in speed are controlled in 740r/min；Cotton carding quantifies 18.50g/5m；Cover board uses 1 flat-clothing of MCC29P-,
Cylinder uses AC2520 × 01850P Bearded-needle knitted cloth, and licker-in uses the taker-in clothing of AT5605 × 05611, and doffer uses AD4030BR
× 02090 doffer's needle cloth, cylinder and 5 gauges of cover board, 10 ‰, 9 ‰, 9 ‰, 9 ‰, 9 ‰ mil, licker-in and feed plate gauge
15 ‰ -18 ‰ mils, licker-in and 7 ‰ -9 ‰ mil of cylinder gauge, cylinder and 5 ‰ -7 ‰ mil of doffer's gauge, licker-in with remove
Dirt knife gauge is adjusted to 29 ‰ -33 ‰ mils.
Preferably, the FA317A type first drawing frame carries out slubbing drafting, and the FA317A type finishing drawing frame carries out
Extreme trace mixing in doubling step, slubbing drafting and extreme trace drafting are referred to as mixing in doubling step, and working condition when carrying out mixing in doubling step production is
27 DEG C of temperature, humidity 65% carry out yarn channel with the mixed liquor that pure water is 20:1 with electrostatic agent mass ratio before drafting production
It wipes, dry, drafting drawing-off roller stomach composite coating roller.
Preferably, the technological parameter of the slubbing drafting are as follows: quantitative 17.50g/5m, speed 130m/min, number of doubling 6,
Drawing-off 11 × 25mm of gauge, horn mouth 2.8mm, total draft/back zone drafting multiple 6.34/1.77.
Preferably, the technological parameter of the extreme trace drafting are as follows: quantitative 15.50g/5m, speed 130m/min, number of doubling 6,
Drawing-off 11 × 25mm of gauge, horn mouth 2.6mm, total draft/back zone drafting multiple 6.77/1.66.
Preferably, the FA415A type fly frame carries out yarn process, the technological parameter of the yarn process are as follows: temperature 28
DEG C, humidity 62%, quantitative 5.0g/10m, drawing-off gauge 11*26*34mm, first break draft 1.24, twist factor 65, ingot speed 400r/min；
Roving-drafting roller surface uses the colourless quick A/B coating roller of textile rubber roll, and the mixed liquor that mass ratio is 1:10 is handled.
Preferably, the EJM128K type spinning frame carries out spinning process, the technological parameter of the spinning process are as follows: temperature
30.5 DEG C, humidity 65%, quantitative 1.416g/100m, orientation: Z is twisted, the twist/twist factor 98.0/377, total draft/first break draft
37.57/1.24, pressure bar before ingot speed 11607r/min, front roller speed 150r/min, jaw 2.5mm, reel cage air pressure
0.1MPA, rings PG1 4254, wire loop 6,903 6/0；Polyamide fibre 40SW quality index:
Item is dry: 17.29 38/,334 62/,585 18/63 CVB/DR:3.05/29.03
Strongly: 245.2CN strength CV%:7.8% elongation %:26.5%；
The twist: 97.8 twirls/10cm Twist Unevenness: 3.3%；
Deviation of weight %:0.4%, weight CV%:1.8%, regain %:3.8%
Spun yarn roller surface is anti-around agent A+B coating roller using rubber roller, and the mixed liquor of mass ratio 1:15 is handled；
Preferably, the NO.21C type automatic winder is carried out from network process, the technological parameter from network process are as follows: temperature 30
DEG C, humidity 70%；
The sensitivity of N(cotton knot): the short and thick sensitivity of 230%, S(): the thick sensitivity of 130%/1.3, L(long): 30%/30, T(long are thin sensitive
Degree): -40%/40, C ± (the inclined sensitivity of starting branch): 18%/5.0, CC ± (continuously propping up inclined sensitivity): 18%/5.0, Jp(test knot
Channel sensitivity) 110%/2.5；Speed 900m/min；Bobbin hardness " minimum ", tension voltage 4/2/1.
The utility model has the advantages that the short fine pure yarn of polyamide fibre of the present invention and its spinning process, pre- through health by the short fibre of polyamide fibre
After processing, with its existing equipment by certain technological innovation and the reasonable technological parameter of configuration, make it smoothly at item, resultant yarn, it is full
Foot trip production needs, effectively solve electrostatic after poor, the carding step networking of cotton cleaning process cotton roll molding adhere to viscous smooth roll seriously,
The problems such as net, leading broken strip are fallen in suspension, and drafting, Roving Frames are wound, realizes batch production；
The short fine raw material of polyamide fibre is sprayed a certain proportion of electrostatic agent by the application, is carried out antistatic health under constant temperature conditions and is located in advance
Reason, each process strict control working condition；
At the technical solution carding machine, smooth roll pass through technological innovation, realize nylon fibre networking and can smoothly boundling at
Item thoroughly solves the problems, such as electrostatic adherency smooth roll, suspension, falls net；
Pass through certain technological innovation at the technical solution carding machine, faucet, realizes that the polyamide fibre carded sliver passes through faucet；It is thorough
Bottom solves the problems, such as broken strip at faucet；
In the technical solution drawing frame, upper Chinese herbaceous peony yarn channel is first wiped one time with electrostatic agent, and drawing belt roller uses compound painting
Roller production is expected, to solve the problems, such as that mixing in doubling step is wound；
In the technical solution fly frame, upper Chinese herbaceous peony yarn channel is first wiped one time with electrostatic agent, and rove roller is applied using 1:10
Roller production is expected, to solve the problems, such as that Roving Frames are wound；
The pure spinning kind of the short fibre of the polyamide fibre of the application efficiently solves the pure spinning electrostatic adherency of the short fibre of polyamide fibre, suspension, falls net, broken strip, twines
Around, production status is poor the problems such as, breach the short fibre of current polyamide fibre can not high-volume it is pure spin production bottleneck, filled up market sky
It is white.
Specific embodiment
Embodiment 1
A kind of preparation process of the short fine pure yarn of polyamide fibre includes the following steps: the short fine health pretreatment → hand fed of polyamide fibre
→ FA106 opener → FA046 type vibrating cotton box cotton feeding → A076F type single beater scutcher → FA201B type carding machine →
FA317A type first drawing frame → FA317A type finishing drawing frame → FA415A type fly frame → EJM128K type spinning frame →
NO.21C type automatic winder；
Preferably, the short fine health pre-treatment step of the synthetic fibre are as follows: pure water is heated to 45 DEG C, it is rear that electrostatic agent is added and stirs equal
Uniformly be sprayed at after even on the short fine raw material of polyamide fibre, after wrap up with plastic cloth and is placed on health in 40 DEG C of health preserving rooms to handle 24 small
When, in case lower process uses；The mass ratio of the pure water and electrostatic agent is 20:1；
Preferably, the hired roughneck of the FA106 opener uses kirschner beater, and opener Beater Speed is 480r/min.
Embodiment 2
On the basis of embodiment 1, being lowered to cotton photoelectricity of FA046 type vibrating cotton box cotton feeding, vibrate and be modulated to most to cotton amount
Small, calender roller pressurization is adjusted to maximum；
Preferably, the Beater Speed of the A076F type single beater scutcher is 960r/min, and the speed of coiled roller is 10r/
Min, blowing pound weight are 10.0KG.
Embodiment 3
On the basis of embodiment 2, crawler type compacting devices, comb are installed at the cotton carding smooth roll of the FA201B type carding machine additional
Install leading guide strip roller at cotton faucet additional；
Preferably, the working condition when FA201B type carding machine carries out carding step is 28 DEG C of temperature, humidity 75%；
Preferably, the cylinder speed of the FA201B type carding machine is 326r/min, cover plate speed 127mm/min, speed
41m/min, licker-in speed are controlled in 740r/min；Cotton carding quantifies 18.50g/5m；Cover board uses 1 flat-clothing of MCC29P-, tin
Woods use AC2520 × 01850P Bearded-needle knitted cloth, licker-in use the taker-in clothing of AT5605 × 05611, doffer using AD4030BR ×
02090 doffer's needle cloth, cylinder and 5 gauges of cover board, 10 ‰, 9 ‰, 9 ‰, 9 ‰, 9 ‰ mil, licker-in and feed plate gauge
15 ‰ -18 ‰ mils, licker-in and 7 ‰ -9 ‰ mil of cylinder gauge, cylinder and 5 ‰ -7 ‰ mil of doffer's gauge, licker-in with remove
Dirt knife gauge is adjusted to 29 ‰ -33 ‰ mils.
Embodiment 4
On the basis of embodiment 3, the FA317A type first drawing frame carries out slubbing drafting, the FA317A type extreme trace drafting
Machine carries out extreme trace mixing in doubling step, and slubbing drafting and extreme trace drafting are referred to as mixing in doubling step, carries out production when mixing in doubling step production
Condition is 27 DEG C of temperature, humidity 65%, and the mixed liquor for being 20:1 with pure water and electrostatic agent mass ratio before drafting production is logical to spinning
Road is wiped, is dried, drafting drawing-off roller stomach composite coating roller.
Embodiment 5
On the basis of embodiment 4, the technological parameter of the slubbing drafting are as follows: quantitative 17.50g/5m, speed 130m/min, and
Number 6, drawing-off 11 × 25mm of gauge, horn mouth 2.8mm are closed, total draft/back zone drafting multiple 6.34/1.77.
Embodiment 6
On the basis of embodiment 5, the technological parameter of the extreme trace drafting are as follows: quantitative 15.50g/5m, speed 130m/min, and
Number 6, drawing-off 11 × 25mm of gauge, horn mouth 2.6mm are closed, total draft/back zone drafting multiple 6.77/1.66；
Preferably, the FA415A type fly frame carries out yarn process, the technological parameter of the yarn process are as follows: 28 DEG C of temperature,
Humidity 62%, quantitative 5.0g/10m, drawing-off gauge 11*26*34mm, first break draft 1.24, twist factor 65, ingot speed 400r/min；Rove
Drawing-off roller surface uses the colourless quick A/B coating roller of textile rubber roll, and the mixed liquor that mass ratio is 1:10 is handled.
Embodiment 7
On the basis of embodiment 6, the EJM128K type spinning frame carries out spinning process, the technological parameter of the spinning process
Are as follows: 30.5 DEG C of temperature, humidity 65%, quantitative 1.416g/100m, orientation: Z is twisted, the twist/twist factor 98.0/377, and total draft/after
Drawing-off 37.57/1.24, ingot speed 11607r/min, pressure bar before front roller speed 150r/min, jaw 2.5mm, reel cage air pressure
0.1MPA, rings PG1 4254, wire loop 6,903 6/0；Polyamide fibre 40SW quality index:
Item is dry: 17.29 38/,334 62/,585 18/63 CVB/DR:3.05/29.03
Strongly: 245.2CN strength CV%:7.8% elongation %:26.5%；
The twist: 97.8 twirls/10cm Twist Unevenness: 3.3%；
Deviation of weight %:0.4%, weight CV%:1.8%, regain %:3.8%；
Spun yarn roller surface is anti-around agent A+B coating roller using rubber roller, and the mixed liquor of mass ratio 1:15 is handled；
Preferably, the NO.21C type automatic winder is carried out from network process, the technological parameter from network process are as follows: temperature 30
DEG C, humidity 70%；
The sensitivity of N(cotton knot): the short and thick sensitivity of 230%, S(): the thick sensitivity of 130%/1.3, L(long): 30%/30, T(long are thin sensitive
Degree): -40%/40, C ± (the inclined sensitivity of starting branch): 18%/5.0, CC ± (continuously propping up inclined sensitivity): 18%/5.0, Jp(test knot
Channel sensitivity) 110%/2.5；Speed 900m/min；Bobbin hardness " minimum ", tension voltage 4/2/1.
The application benefit spinning process produces yarn and certain producer's yarn quality comparison:
This patent spinning process yarn: polyamide fibre 40SW quality index:
Item is dry: 17.29 38/,334 62/,585 18/63 CVB/DR:3.05/29.03
Strongly: 245.2CN strength CV%:7.8% elongation %:26.5%；
The twist: 97.8 twirls/10cm Twist Unevenness: 3.3%；
Certain producer's yarn: polyamide fibre 40SW quality index:
Item is dry: 18.96 59/,485 87/,721 32/104 CVB/DR:4.89/37.58
Strongly: 224.5CN strength CV%:8.9% elongation %:23.1%；
The twist: 98.1 twirls/10cm Twist Unevenness: 4.2%.
Claims (10)
1. a kind of preparation process of the short fine pure yarn of polyamide fibre, which is characterized in that include the following steps: that the short fine health of polyamide fibre is located in advance
Reason → hand fed → FA106 opener → FA046 type vibrating cotton box cotton feeding → A076F type single beater scutcher → FA201B
Type carding machine → FA317A type first drawing frame → FA317A type finishing drawing frame → FA415A type fly frame → EJM128K type is thin
Yarn machine → NO.21C type automatic winder.
2. a kind of preparation process of the short fine pure yarn of polyamide fibre as described in claim 1, which is characterized in that the synthetic fibre is short fine feeding
Raw pre-treatment step are as follows: pure water is heated to 45 DEG C, it is rear that electrostatic agent is added and is uniformly sprayed at the short fibre of polyamide fibre after mixing evenly
On raw material, after wrapped up with plastic cloth and be placed in 40 DEG C of health preserving rooms health and handle 24 hours, in case lower process uses；It is described pure
The mass ratio of water purification and electrostatic agent is 20:1.
3. a kind of preparation process of the short fine pure yarn of polyamide fibre as described in claim 1, which is characterized in that the FA106 is opened
The hired roughneck of cotton machine uses kirschner beater, and opener Beater Speed is 480r/min.
4. a kind of preparation process of the short fine pure yarn of polyamide fibre as described in claim 1, which is characterized in that the vibration of FA046 type
Hopper feeder is modulated to minimum to cotton amount to the downward of cotton photoelectricity, vibration, and calender roller pressurization is adjusted to maximum.
5. a kind of preparation process of the short fine pure yarn of polyamide fibre as described in claim 1, which is characterized in that the A076F type
The Beater Speed of single beater scutcher is 960r/min, and the speed of coiled roller is 10r/min, and blowing pound weight is 10.0KG.
6. a kind of preparation process of the short fine pure yarn of polyamide fibre as described in claim 1, which is characterized in that the FA201B type
It installs crawler type compacting devices at the cotton carding smooth roll of carding machine additional, installs leading guide strip roller at cotton carding faucet additional.
7. a kind of preparation process of the short fine pure yarn of polyamide fibre as described in claim 1, which is characterized in that the FA201B type
Working condition when carding machine carries out carding step is 28 DEG C of temperature, humidity 75%.
8. a kind of preparation process of the short fine pure yarn of polyamide fibre as described in claim 1, which is characterized in that the FA201B type
The cylinder speed of carding machine is 326r/min, cover plate speed 127mm/min, speed 41m/min, and licker-in speed control exists
740r/min；Cotton carding quantifies 18.50g/5m；Cover board uses 1 flat-clothing of MCC29P-, and cylinder uses AC2520 × 01850P tin
Woods needle cloth, licker-in use the taker-in clothing of AT5605 × 05611, and doffer uses the doffer of AD4030BR × 02090 needle cloth, cylinder and lid
5 gauges of plate, 10 ‰, 9 ‰, 9 ‰, 9 ‰, 9 ‰ mil, licker-in and 15 ‰ -18 ‰ mil of feed plate gauge, licker-in and cylinder every
Away from 7 ‰ -9 ‰ mils, cylinder and 5 ‰ -7 ‰ mil of doffer's gauge, licker-in and mote knife gauge are adjusted to 29 ‰ -33 ‰ mils.
9. a kind of preparation process of the short fine pure yarn of polyamide fibre as described in claim 1, which is characterized in that the FA317A type
First drawing frame carries out slubbing drafting, and the FA317A type finishing drawing frame carries out extreme trace mixing in doubling step, slubbing drafting and extreme trace
Drafting is referred to as mixing in doubling step, and carrying out working condition when mixing in doubling step production is 27 DEG C of temperature, humidity 65%, before drafting production
Yarn channel is wiped with the mixed liquor that pure water is 20:1 with electrostatic agent mass ratio, is dried, drafting drawing-off roller stomach is multiple
Close coating roller.
10. a kind of preparation process of the short fine pure yarn of polyamide fibre as claimed in claim 9, which is characterized in that the slubbing is simultaneously
The technological parameter of item are as follows: quantitative 17.50g/5m, speed 130m/min, number of doubling 6, drawing-off 11 × 25mm of gauge, horn mouth
2.8mm, total draft/back zone drafting multiple 6.34/1.77；Preferably, the technological parameter of the extreme trace drafting are as follows: quantitative
15.50g/5m, speed 130m/min, number of doubling 6, drawing-off 11 × 25mm of gauge, horn mouth 2.6mm, total draft/back area draft
Multiple 6.77/1.66；Preferably, the FA415A type fly frame carries out yarn process, the technological parameter of the yarn process are as follows:
28 DEG C of temperature, humidity 62%, quantitative 5.0g/10m, drawing-off gauge 11*26*34mm, first break draft 1.24, twist factor 65, ingot speed
400r/min；Roving-drafting roller surface uses the colourless quick A/B coating roller of textile rubber roll, and mass ratio is the mixing of 1:10
Liquid processing；Preferably, the EJM128K type spinning frame carries out spinning process, the technological parameter of the spinning process are as follows: temperature
30.5 DEG C, humidity 65%, quantitative 1.416g/100m, orientation: Z is twisted, the twist/twist factor 98.0/377, total draft/first break draft
37.57/1.24, pressure bar before ingot speed 11607r/min, front roller speed 150r/min, jaw 2.5mm, reel cage air pressure
0.1MPA, rings PG1 4254, wire loop 6,903 6/0；Preferably, spun yarn roller surface exempts to handle using import is domestic
Rubber roller is anti-around agent A/B coating roller, and the mixed liquor of mass ratio 1:15 is handled；Preferably, the NO.21C type automatic winder into
It goes from network process, the technological parameter from network process are as follows: 30 DEG C of temperature, humidity 70%.
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| CN201810882080.6A CN108950770A (en) | 2018-08-06 | 2018-08-06 | A kind of short fine pure yarn of polyamide fibre and its spinning process |
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| CN201810882080.6A CN108950770A (en) | 2018-08-06 | 2018-08-06 | A kind of short fine pure yarn of polyamide fibre and its spinning process |
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| CN111364135A (en) * | 2020-03-18 | 2020-07-03 | 魏桥纺织股份有限公司 | Polypropylene staple fiber pure spinning yarn and production method thereof |
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