CN101476169B - Method for producing high strength fine-denier polyamide fiber 6 fully drawn yarn - Google Patents
Method for producing high strength fine-denier polyamide fiber 6 fully drawn yarn Download PDFInfo
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- CN101476169B CN101476169B CN2009100062327A CN200910006232A CN101476169B CN 101476169 B CN101476169 B CN 101476169B CN 2009100062327 A CN2009100062327 A CN 2009100062327A CN 200910006232 A CN200910006232 A CN 200910006232A CN 101476169 B CN101476169 B CN 101476169B
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Abstract
The invention provides a method for producing fine chinlon 6 fully drawn yarn with high strength which includes steps as follows: (1) chinlon 6 slice enters into a screw extruder with electrical heating function through a storage hopper that makes slice showing melt shape; (2) the melt material is pressed in a spinning subassembly through a metering pump quantificationally, and is spout by a spout plate for forming filament bundle in a spining box body; (3) the filament bundle is cooled by side wind through the spinning box body and is cooled further through a corridor; (4) the cooled filament bundle is oiled by an oil roll; (5) oil in the filament bundle is more uniform and has high amplexus degree through confounding; (6) the filament bundle passes through a first group filament guide roll and a second group filament guide roll for drafting forming, then passes through a third filament guide roll to reel. A grade product produced by the method has average more than or equal to 6.0cN/dtex rupture strength that is higher 22% than the product produced by normal method, and has better transparent sense and visual effect, the produced clothes has better flexible sense and handle sense for wearing cosily.
Description
Technical field
The present invention relates to fusion method and make artificial filament's method, more particularly, is a kind of production method of high strength fine-denier polyamide fiber 6 fully drawn yarn.
Background technology
Chinlon 6 filament is a kind of synthetic fiber commonly used, is widely used in garment market, has characteristics such as good hand touch, wear-resisting, COLOR FASTNESS height, and thin dawn full-drawn yarn has more soft, comfortable and easy to wear characteristics.General fine denier filament adopts two-step method production, and promptly the first step is produced the UDY silk earlier, and it is the DT silk that the second step UDY silk is produced full-drawn yarn through cold stretch.This method production efficiency is low, and cost is high, unstable product quality.
In recent years some enterprises adopts one-step method to produce polyamide fibre 6 thin dawn full-drawn yarn technologies to be: and the fusion-extruder-spinnerets-lateral blowing cooling-oil nozzle of cutting into slices oils-and the path is cooled off-is pre-payed network-drawing-off-master and hands over network-coiling.General drafting multiple is less than 1.3, and the drafting forming temperature is generally 130-150 ℃.Fracture strength >=the 4.9cN/dtex of silk.
The Along with people's growth in the living standard; To high-grade dress ornament require increasingly highly, thin dawn full-drawn yarn is increasing to be used for high-grade dress ornament, but because the thin fracture easily of silk; Becoming the difficult point in the production so improve the fracture strength of thin dawn FDY, also is the key index that satisfies market, downstream.
Summary of the invention
The object of the invention is to provide a kind of method of improved production fine-denier polyamide fiber 6 fully drawn yarn; So that adopt the fracture strength >=6.0cN/dtex of the product (FDY) that this method produces; Product than adopting conventional method to produce exceeds 22%; And have better transparent feel and visual effect, the clothes flexibility and the feel that process are better, wear more comfortable.
The objective of the invention is to realize through following technical scheme:
A kind of production method of high strength fine-denier polyamide fiber 6 fully drawn yarn may further comprise the steps:
(1) chinlon 6 section gets into the screw extruder with electric heating function through feed bin, makes section be molten;
(2) above-mentioned molten material quantitatively is pressed into filament spinning component, is sprayed by spinnerets through measuring pump, in spinning manifold, forms tow;
(3) tow is cooled off by lateral blowing through spinning manifold, further cools off through the path then;
(4) cooled tow oils through oiling roller;
(5) through handing over network to make the more even and obvolvent Du Genggao of tow oil-containing;
(6) tow arrives package through the 3rd godet roller then through the drafting forming of first group of godet roller and second group of godet roller.
Compared with prior art, the characteristics of fine-denier polyamide fiber 6 fully drawn yarn production method provided by the present invention are mainly reflected in following aspect:
1. drafting multiple is high: the ratio of the speed of the present invention's second godet roller and first godet roller, and promptly drafting multiple is 1.5-2.5, and conventional spin processes is generally less than 1.3.
2. setting temperature is high: the present invention adopts 160-180 ℃ of hot-rolling typing, the general 130-150 of conventional spin processes ℃.
3. the present invention uses oiling roller to oil, and conventional spin processes adopts oil nozzle to oil.Generally adopt oil nozzle to oil in the industry and go to reel through the path then, it is believed that like this and can reduce strand tension force, and oil evenly.
4. the present invention uses and hands over network one, hands over network pressure 2.0-3.0bar; Conventional spin processes adopts twice to hand over network, and the purpose that network is pre-payed in first road is to dispel unnecessary finish, makes to oil more evenly, and second road is handed over network to add to silk and submitted the obvolvent degree that network point increases thread.The present invention has removed and has pre-payed network, hands over network to be put into to pre-pay the network position, increase and hand over network pressure main, blows to have stamped nexus simultaneously outside the even finish and increased cohesive force.And the friendship network pressure here is high, and high to the grasping force of silk, tension force is big, makes silk stable at first group of godet roller, can not skid, and helps high drafting.
5. the fracture strength of the resulting product of the present invention is high, its A level article fracture strength mean value >=6.0cN/dtex, and A level article fracture strength mean value >=4.9cN/dtex of conventional thin dawn FDY has exceeded 22.4%.Therefore, can satisfy the high-grade polyamide fibre thin,tough silk sensation silk stocking and the demand in the polyamide fibre garment material market of top grade.
The specific embodiment
Specify invention provided by the present invention below, but therefore the present invention does not receive any restriction.
In method provided by the present invention, the equipment that is adopted comprises: extruder, melt dosing pump, filament spinning component, spinning manifold, path, last oil system, winding apparatus, three groups of godet rollers, high-speed winders and auxiliary biphenyl firing equipments etc.The said equipment can be a home equipment, also can be import equipment.
Total technical process can be sketched and be: section fusion-extruder extrudes-dosing pump quantitatively-spinnerets ejection-lateral blowing cooling-path further cools off-the oiling roller network-drafting forming-package that oils-hand over.
In method provided by the present invention, chinlon 6 section gets into through feed bin has the electric heating function screw extruder, makes section be molten, becomes spinning melt.The control of extruder heating-up temperature preferably is divided into 4-6 district, and each is distinguished temperature and is controlled between 235-260 ℃.Each distinguishes temperature can be identical, also can be different.
In method provided by the present invention, melt is extruded through melt pipe from extruder, quantitatively is pressed into filament spinning component, is sprayed by spinnerets through measuring pump, in spinning manifold, forms tow.Melt pipe and spinning manifold top are by the biphenyl steam insulation of circulation, and temperature is controlled between 247-260 ℃.Spinneret hole can be circular, also can be trilobal, triangle, cross.Draw ratio is controlled between the 2.5-4.
In method provided by the present invention, tow is cooled off by lateral blowing through spinning manifold, and through the path, oiling roller oils, and further the cooling back arrives first group of godet roller.The lateral blowing temperature is controlled at 19-24 ℃, and humidity is more than 70%.
In method provided by the present invention; Tow is through the drafting forming of first group of godet roller and second group of godet roller; Drafting multiple (ratio of the speed of second godet roller and first godet roller) is 1.5-2.5, and preferred drafting multiple is 1.6-2.4, and further preferred drafting multiple is 1.8-2.2.First group of godet roller temperature is normal temperature.Second group of godet roller temperature is controlled at 160-180 ℃, arrives package through the 3rd godet roller then.
In method provided by the present invention, tow arrives high speed winding head by the 3rd godet roller and carries out package, winding speed be controlled at 4100-4500 rice/minute.The strand Tension Control is at 0.1-0.15cN/dtex.
Below in conjunction with embodiment further explain method provided by the present invention, but therefore the present invention does not receive any restriction.
Embodiment 1
Adopt the method for the invention to produce fine-denier polyamide fiber 6 fully drawn yarn, concrete steps are following:
1. section fusion: section gets into through feed bin has the electric heating function screw extruder, makes section be molten, becomes spinning melt; Extruder divides 4 districts, and each is distinguished temperature and is controlled at about 250 ℃;
2. spinning: melt is extruded through melt pipe from extruder, quantitatively is pressed into filament spinning component, is sprayed by spinnerets through measuring pump, in spinning manifold, forms tow.Melt pipe and spinning manifold top are by the biphenyl steam insulation of circulation, and temperature is controlled at about 250 ℃; Spinneret hole is circular, and is long through than being 3.0.
3. cooling: tow is cooled off by lateral blowing through spinning manifold, further cools off through the path, arrives first group of godet roller after oiling roller oils.The lateral blowing temperature is controlled at 22 ℃, and humidity is about 80%.
4. drafting forming: tow is through the drafting forming of first group of godet roller and second group of godet roller, drafting multiple 2.0.First group of godet roller temperature is normal temperature, and second group of godet roller temperature is controlled at 180 ℃, arrives package through the 3rd godet roller then.
5. package: tow arrives high speed winding head by the 3rd godet roller and carries out package, and winding speed is controlled at 4100 meters/minute, and the strand Tension Control is at 0.1-0.15cN/dtex.
Through test, adopt the fracture strength 6.8cN/dtex of the FDY that this method produces, and have good transparent feel and visual effect.Said fracture strength is measured according to the method for GB " synthetic fiber filament and textured filament ultimate strength and extension at break test method " GB/T 14344-1993 regulation.
Embodiment 2
Adopt the method for the invention to produce fine-denier polyamide fiber 6 fully drawn yarn, concrete steps are following:
1. section fusion: section gets into through feed bin has the electric heating function screw extruder, makes section be molten, becomes spinning melt; Extruder divides 6 districts, and each is distinguished temperature and is controlled at about 260 ℃;
2. spinning: melt is extruded through melt pipe from extruder, quantitatively is pressed into filament spinning component, is sprayed by spinnerets through measuring pump, in spinning manifold, forms tow.Melt pipe and spinning manifold top are by the biphenyl steam insulation of circulation, and temperature is controlled at about 260 ℃; Spinneret hole is a trilobal, and is long through than being 3.5.
3. cooling: tow is cooled off by lateral blowing through spinning manifold, further cools off through the path, arrives first group of godet roller after oiling roller oils.The lateral blowing temperature is controlled at 24 ℃, humidity about 85%.
4. drafting forming: tow is through the drafting forming of first group of godet roller and second group of godet roller, drafting multiple 1.6.First group of godet roller temperature is normal temperature, and second group of godet roller temperature is controlled at 160 ℃, arrives package through the 3rd godet roller then.
5. package: tow arrives high speed winding head by the 3rd godet roller and carries out package, and winding speed is controlled at 4500 meters/minute, and the strand Tension Control is at 0.1-0.15cN/dtex.
Through test, adopt the fracture strength 6.5cN/dtex of the FDY that this method produces, and have good transparent feel and visual effect.
Claims (6)
1. the production method of a high strength fine-denier polyamide fiber 6 fully drawn yarn may further comprise the steps:
(1) chinlon 6 section gets into the screw extruder with electric heating function through feed bin, makes section be molten;
(2) above-mentioned molten material quantitatively is pressed into filament spinning component, is sprayed by spinnerets through measuring pump, in spinning manifold, forms tow;
(3) tow is cooled off by lateral blowing through spinning manifold, further cools off through the path;
(4) cooled tow oils through oiling roller;
(5) through handing over network to make the more even and obvolvent Du Genggao of tow oil-containing;
(6) tow arrives package through the 3rd godet roller then through the drafting forming of first group of godet roller and second group of godet roller;
Wherein, the temperature of said first group of godet roller is a normal temperature, and the temperature of said second group of godet roller is controlled at 160-180 ℃;
The ratio of the speed of said second godet roller and first godet roller, promptly drafting multiple is 1.5-2.5;
Adopt and hand over network together, hand over network pressure 2.0-3.0bar;
Fracture strength mean value >=the 6.0cN/dtex of resulting A level article.
2. method according to claim 1 is characterized in that, melt pipe and spinning manifold top are by the biphenyl steam insulation of circulation, and temperature is controlled between 247-260 ℃.
3. method according to claim 2 is characterized in that, said spinneret hole is circle, trilobal, triangle or cross; And draw ratio is controlled between the 2.5-4.
4. method according to claim 3 is characterized in that, said lateral blowing temperature is controlled at 19-24 ℃, and humidity is more than 70%.
5. method according to claim 4 is characterized in that, said screw extruder heating and temperature control is divided into 4-6 district, and each is distinguished temperature and is controlled between 235-260 ℃.
6. method according to claim 5 is characterized in that, in the package process, said winding speed be controlled at 4100-4500 rice/minute, the strand Tension Control is at 0.1-0.15cN/dtex.
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| CN2009100062327A CN101476169B (en) | 2009-02-06 | 2009-02-06 | Method for producing high strength fine-denier polyamide fiber 6 fully drawn yarn |
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| CN2009100062327A CN101476169B (en) | 2009-02-06 | 2009-02-06 | Method for producing high strength fine-denier polyamide fiber 6 fully drawn yarn |
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