CN1537982A - Multi-strip fine danier polyester preextension yarn and its manufacturing method - Google Patents
Multi-strip fine danier polyester preextension yarn and its manufacturing method Download PDFInfo
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- CN1537982A CN1537982A CNA031219241A CN03121924A CN1537982A CN 1537982 A CN1537982 A CN 1537982A CN A031219241 A CNA031219241 A CN A031219241A CN 03121924 A CN03121924 A CN 03121924A CN 1537982 A CN1537982 A CN 1537982A
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Abstract
A multi-strip prestretched fine-denier polyester yarn is disclosed, which has excellent physical properties, uniform stretch stress and high dyeability. Its preparing process features use of radiation-type external blowing cooler and selective of beneficial spinning condition and hole arrangement on spinneret plate, and includes false twist, stretching twist and air blowing twist.
Description
Technical field
The present invention is the manufacture method of relevant many number fine-denier polyester long filaments, refers to pre-manufacture method of extending silk and many thin dawn extension of number silks of thin dawn of many numbers of polyester especially.
Background technology
Polyester fiber has excellent mechanical properties and dyeability, and with low cost, therefore the most normal being used in three big synthetic fiber.In recent years, further improve the feel and the function requirement of fabric along with the dress material purposes is advanced, the filament denier that gets with the melt spinning method for making (or claims the single fiber fiber number, d.p.f) the dress material purposes of being combined to fibrous braid and playing woolen is widely used the thin dawn, so in its processing procedure, the cooling effect of polyester tow after fusion spues has considerable influence to the rerum natura and the uniformity of silk.
The type of cooling commonly used at present has horizontal type blowing device (Cross flow quenching system shows as Fig. 1).Radial pattern internal blowing device (Radial out-to-in flow quenching system shows as Fig. 2).The outer blowing apparatus (Radial in-to-out flow quenching system shows as Fig. 3) of radial pattern.Be respectively described below: in the horizontal type blower system, after tow was spued by spinnerets, cooling air was by the one-sided cooling tow of silk; And in radial pattern, blow in the system, after silk was spued by spinnerets, via passing through blower inside, the blowhole of cooling air on the blower inwall blew out, and blows to the tow central portion from the tow periphery, makes the tow cooling; And outside radial pattern, blow in the system, after tow was spued by spinnerets, via passing through the blower outside, the blowhole of cooling air on the blower outer wall blew out, and blows to the tow periphery from the tow central portion, and tow is evenly cooled off.
Present three kinds of blowing modes are the most generally used with the horizontal type blowing, and the outer blowing apparatus of radial pattern internal blowing device and radial pattern is then comparatively commonly used aspect short fiber (Staple), is used for industrial yarn production very less.
Softness and tool are wet thoroughly to reach, the filament denier (d.p.f) of waterproof, anti-suede purpose needs below 0.3den to use many number fine denier yarns of polyester to make high density cloth and silk and dress material, and the effect beginning can be remarkable.General filament denier (d.p.f) the very of a specified duration fibre manufacture that circulates on the market less than 0.3den, system uses twenty percent to divide the fusion composite spinning method, promptly make the fiber of higher Denier in advance, make the superfine fibre of filament denier (d.p.f) with machinery or chemical fiber opening method again less than 0.3den, but it is above-mentioned with the spinning of Composite Double composition, the method for making of these tow is handled in the tow reprocessing of making higher Denier earlier, except need investment great number equipment, and back segment is handled because of using chemical decrement or utilizing mechanical system to divide when fine process loaded down with trivial details two compositions, quality control is difficult for, and improper.
And use single composition polymer to reduce filament denier (d.p.f) with existing melt spinning method, the following two kinds of methods of then general use, one for the fixing total discharge-amount of polyester molten mass, increase the spinnerets hole count that spues, it two is to keep the spinnerets total discharge-amount that hole count, reduction polyester melt body that spues to reach.But the former when the spinning stage produces along with tinyization of filament denier (d.p.f), the spinnerets hole count that spues need increase, as with the cooling device of horizontal type blowing cooled off, then be subjected to charming appearance and behaviour near the tow of wind surface and to leave the cooling difference of wind surface tow far away big because of the tow single face, tow is evenly cooled off, physical difference between each single fiber is very big, lack of homogeneity; When filament denier (d.p.f) during less than 0.3den, this difference phenomenon is more obvious what is more, and can't provide can be for pre-extensions of producing thread; And the latter needs to reduce total discharge-amount of polyester molten mass for keeping the spinnerets hole count that spues, and increases in the time of staying of melting the body pipeline but this measure will make polyester melt body, causes the cracking of polyester molten mass serious, and low polymer generates in a large number, and spinning is produced condition and extremely worsened; If desire is produced the higher specification of total fiber number, need to produce in addition, often make outside the output minimizing,, produce specking problems such as (inequalities) when causing back segment processing poststaining also easily because of two bursts of tow physical difference in the Split Down mode.
In addition, the internal blowing device of radial pattern is adjusted because of cooling air is difficult, and the too little tow that can't make of wind speed obtains cooling fully, causes uniformity long period aberration rate (Uster halfinert value) height, more sticks together and spinning smoothly mutually between the severe patient monofilament; Wind speed is too high, and the cooling air phase mutual interference of opposite blowing direction causes the tow shakiness to cause monofilament to collide mutually, and the product condition is not good; And tow is difficult for entering narrow cooling duct, and operability is not good, also is unfavorable for the pre-production of extending silk of thin dawn of many numbers of polyester.
Therefore, how not sacrifice under the output, reduce the pre-silk that extends of thin dawn of many numbers of high-quality polyester that filament denier (d.p.f) also makes steady production simultaneously, promptly become polyester and close the theme that the anxious desire of fine manufacturer breaks through, for example U.S. Pat 5,288,553, US 5,145,623, US 5,407, and 621, US5,250,245 is the ester grain of selecting the special range melt viscosity for use, select the aperture and the hole of spinnerets long, and limit polyester fondant, the pre-silk that extends of the thin dawn of many numbers of polyester of the long and slender degree 0.2 to 0.8den of manufacture order in spinning conditions such as the pipeline time of staying, but above-mentioned patent and which kind of type of cooling of unspecified use, and its calm belt length 2cm is to (12 * filament denier
-2(d.p.f)) cm, because of this calm belt length oversize, when borrow kind help increase still can't reach when spuing hole count on the per unit area spinnerets institute expect uniformity long period make a variation (Uster halfinert value) less than 0.3% and thermal stress make a variation less than 2% requirement; The open communique spy of Japan Patent opens clear 55-132708 and has disclosed a kind of polyester, polyamide, polyolefin monofilament dawn number (d.p.f) the extension silk method for making less than 0.3den, viscosity was less than 950 pools (poise) when this method for making system control molten mass spued, and spinnerets below 1 to 3cm place's environment temperature remains in below 200 ℃, cooling air in spinnerets below 10cm with interior with horizontal direction, make progress into 5 ° to 85 ° angle cooling tow, this method for making causes the temperature inequality because of the spinnerets surface is subject to the cooling air influence, can't stabilize spinning.As for the outer blowing apparatus of radial pattern, as U.S. Pat 5,536,157 and US 5,866,055 described, be to be used to produce filament denier 1.1 to 22.2 industrial polyester yarns, not disclosing can be for producing pre-method for making of extending silk of polyester thin dawn of many numbers.
Summary of the invention
Because state the cooling device of horizontal type blowing in the use, because of the tow single face is subjected to charming appearance and behaviour near the tow of wind surface and big from wind surface tow cooling difference far away, tow is evenly cooled off, the physical difference between each single fiber is bigger, lack of homogeneity; Reach shortcomings such as radial pattern internal blowing device operability is not good, the wind speed adjustment is difficult for, the inventor etc. find after self-criticism meticulously, development, adopt the outer blowing apparatus of radial pattern to make the pre-silk that extends of polyester thin dawn of many numbers, gained filament denier (d.p.f) can reach 0.3 to 2.0den, uniformity long period variation (Uster half inert value) is less than 0.3%, the thermal stress variation after back segment processing, can get the good extension silk of metachromia less than 2% between ingot.
Therefore, technical problem to be solved by this invention is achieved with the method for making that the thin single Buddhist nun of many numbers of a kind of polyester extends silk in advance, this method comprises that to intrinsic viscosity (IV) be 0.5～0.7, and the polyester polymers that fusing point is 245～265 ℃ heating, make it fusing, quantitatively extrude many number fine-denier polyesters after the filtration and extend silk in advance, it is characterized in that this method comprises the following steps:
(a) with the described polyester fused mass of quantitatively extruding via a kind of spinnerets hole tow that evenly spues that spues with multiple circular arrangement, the spinnerets of the described multiple circular arrangement hole arrangement mode that spues is outmost turns diameter D
2Mm, it is D that inner ring is arranged diameter
1Mm, and (D
2-D
1)≤20 (mm);
(b) tow after described the spuing is the calm zone of Lsmm in spinnerets below through a segment length, and is D by a diameter
0Mm, length are the cylindric cooling duct of Lqcm, this cooling duct is positioned at the below that spinnerets central authorities do not have the position, hole that spues, it blows radially cooling air from the inner outwards radial pattern of tow, the wind speed of the cooling air that supplies is 0.2～0.6 meter per second, so that tow evenly cools off, until the glass transition temperature Tg of described polyester polymers or lower, give boundling then, wherein said D
1, D
0, Ls, Lq need satisfy following various:
(i)12≤(D
1-D
0)≤33(mm)，
(ii)2≤Ls≤20(mm)，
(iii)15≤Lq≤40(cm)；
(c) batch the gained tow with 1800 to 3000 meters/minute speed at last.
According to the present invention, preferably, the spue hole arranging density in hole of described spinnerets is 7～21 holes/cm
2
According to the present invention, further preferably, the spue section in hole of described spinnerets is selected from circle, hollow, Y type, yi word pattern, quadrangle, triangle, hexagon, the cross and C type one or more.
Another object of the present invention provides a kind of many number fine-denier polyesters that made by the inventive method and extends silk in advance, it is characterized in that, should the pre-filament denier (d.p.f) that extends silk be 0.3 to 2.0den, and its breakpoint degree of stretching is 100 to 160%, the variation of uniformity long period less than 0.3%, thermal stress makes a variation less than 2%.
According to the present invention, preferably, above-mentioned many number fine-denier polyesters extend silk in advance, it is characterized in that, with described extend silk to pre-extend silk through false twisting processing, stretch twist with the fingers processing, air blow twist with the fingers that processing or one section direct fabrics extend processing procedure and filament denier (d.p.f) 0.2 to 1.0, good many fine-denier polyesters of metachromia extend silk.
The invention provides and produce the pre-outer blast-cold radiator cooler of radial pattern that extends silk usefulness of polyester thin dawn of many numbers, can make the even wind-engaging of tow, and make the pre-silk that extends of thin dawn of many numbers of uniform polyester.For reaching the pre-extension silk of filament denier of the present invention (d.p.f) 0.3 to 2.0den, wherein filament denier (d.p.f) is (a molten mass discharge-amount (g/min) * coiling speed (m/min) ÷ (9000 * spinnerets spue hole count)).
The present invention adopt to improve the unit are spinnerets hole count (being hole density) that spues to reach the requirement that reduces filament denier (d.p.f), and calm belt length is good with 2 to 20mm.When hole density increases, because of the distance between single fiber shortens, calm belt length is greater than 20mm, the single fiber tow produces unstable situation because of the resonance effect, cause the variation of uniformity long period to become big, even mutually collision causes fracture of wire, even heighten wind speed, also can't obtain the uniformity long period variation (Uster halfinert value) expected less than 0.3% pre-extensions thread; When calm belt length during less than 2mm, cooling air can influence the spinnerets surface temperature, makes to produce the condition variation, and the finished product dyeability after extending processing is bad.
The arrangement mode (as shown in Figure 5) in the spinning jet used hole that spues of the inventive method
For: inner ring diameter D1 and outmost turns diameter D
2Poor (D
2-D
1)≤20 (mm).If (D
2-D
1) when being worth greater than 20mm, then ectonexine tow wind-engaging difference is excessive, because of the distance difference of refinement point and spinnerets between single fiber big, then in the tow between each single fiber physical difference big, can't make uniformity long period variation of the present invention (Uster halfinert value) less than 0.3% and the thermal stress variation less than 2% pre-extensions thread.And above-mentioned inner ring diameter D
1With blower diameter D
0Difference between 12 to 33mm, D
1-D
0Value is less than 12mm, and tow easily touches blower and fracture of wire, normally spinning; D
1-D
0Value is during greater than 33mm, and the cooling effectiveness of then drying reduces, and spinnerets outmost turns diameter D
2Place's tow is because of cooling off not enough easily fracture of wire.
For making tow can acquire suitable cooling, blower length of the present invention is with 15 to 40cm the bests.Blower length is during less than 15cm, and tow can cause the tow adhesion and fracture of wire because of cooling off deficiency; Blower length is during greater than 40cm, then easily forms flow-disturbing and makes uniformity long period variation (Usterhalf inert value) variation; Blower used in the present invention is cylindric, can be by multi-layer fiber element or multiple layer metal net or metal sintering filter screen or ceramic post sintering filter screen, or make by multi-layer porous plate; Cooling air cools off tow via pore from radially evenly blowing out from inside to outside with radial pattern.
In the present invention, preferable with cooling wind speed 0.2 meter per second to 0.6 meter per second.If wind speed is during less than 0.2 meter per second, and cooling is not enough, causes silk to stick together and fracture of wire and follow the variation of uniformity long period to become big; Wind speed can't make uniformity long period diminish greater than 0.6 meter per second, uniformity long period variation nothing is obviously benefited, and easily made the cold excessively fracture of wire that causes of tow.
The hole that spues of the present invention is 7～21 holes/cm in spinnerets alignment area density (hole density)
2Hole density definition: as shown in Figure 5, with D
2And D
1Between the total hole count in the hole that spues divided by D
2And D
1Between cartographic represenation of area, i.e. D
2With D
1Between total hole count * 4/ π ÷ (D
2 2-D
1 2).
Hole density can reach the requirement of filament denier of the present invention (d.p.f) 0.3～2.0den because of need reduce total discharge-amount beginning, and need with Split Down production during less than every square centimeter 7 hole, and economic benefit reduces; When hole density was higher than every square centimeter 21 hole, because of arranging closely between single fiber, it was big to cause cooling off difference between monofilament, and the variation of uniformity long period is big and can't stabilize spinning.
Polyester grain intrinsic viscosity used in the present invention (IV) is between 0.5 to 0.7, extrude by spinnerets after the fusion, make the pre-silk that extends of thin dawn of many numbers of polyester through spinning, its breakpoint degree of stretching is between 100% to 160%, filament denier is 0.3 to 2.0den, and uniformity long period variation (Uster half inertvalue) is less than 0.3%; The thermal stress variation is less than 2%.Again after extending processing, as stretch and twist with the fingers processing, false twisting worker processing, air blow twist with the fingers processing and filament denier several 0.2 to 1.0den, and the good thin dawn of many numbers of polyester of metachromia extend silk.
Description of drawings
Fig. 1 commonly uses the horizontal type cold wind blower to produce the schematic diagram that many thin single Buddhist nun's polyester of number extend silk in advance;
Fig. 2 commonly uses the interior blast-cold radiator cooler of radial pattern to produce the schematic diagram that many thin single Buddhist nun's polyester of number extend silk in advance;
Fig. 3 produces the schematic diagram that many thin single Buddhist nun's polyester of number extend silk in advance with the outer blast-cold radiator cooler of radial pattern among the present invention;
Number in the figure
1, polyester fondant 2, spinneret 3, spinnerets 4, tow
5, tow 8 behind blowing device 6, oil nozzle 7, the boundling, do not heat roller
8-1, heating roller 8-2, heating roller 8-3, separation wheel 9, coiling machine
10, extend spinning cake 11, heating roller 12, heater 13, heating roller in advance
14, precursor
Fig. 4 is the schematic diagram of cooling duct in the outer blast-cold radiator cooler of the used radial pattern of the present invention;
The arrangement mode schematic diagram in the spinning jet used hole that spues when Fig. 5 uses the outer blast-cold radiator cooler of radial pattern for the present invention;
Fig. 6 extends processing with stretching the twister schematic diagram for the present invention;
The thin single Buddhist nun's polyester of many numbers of gained extended the schematic diagram of the direct fabrics extension of silk when Fig. 7 used the outer blowing apparatus system of radial pattern for the present invention.
Beneficial effect for proof the present invention can reach, adopt following method to analyze to extend in advance silk by many numbers of the inventive method gained fine-denier polyester hereby:
A. thermal stress analysis of variance:
Analytical instrument: Textechno Dynafil M Type DPG/M;
Analysis condition: ratio of elongation 1.6,150 ℃ of heating-up temperatures; Analysis speed 50m/min;
Analysis time: 1 minute, try to achieve thermal stress aberration rate (CV%).
B. uniformity long period variation (Uster halfinert value) is analyzed:
Analytical instrument: USTER TESTER 3;
Analysis speed: 400m/min; Analysis time: 2.5 minutes;
Analysis length: 1000 meters.
C. filament denier analysis:
Coiling tow 90 circles are weighed, and (weight is with the expression of a gram), a on duty 100 is nile b of total dawn of tow (den), the b value is filament denier divided by per share tow number c.
D. breakpoint degree of stretching intensive analysis:
Analytical instrument: Textecho Type FPA/M;
Analysis condition: 10 centimetres of analysis length, draw speed 60 CM/MIN, pre-loading 0.5CN/tex, intensity is maximum intensity, its correspondence degree of stretching is breakpoint degree of stretching.
E. the metachromia of beating up (woven fabrics dyability) decision method:
Fabric tissue: satin weave (satin) warp: the 75d/36f processing yarn, through 150 of close every English inch, weft yarn uses product of the present invention. and filling density cooperates red Buddhist nun to count adjustment.
The dyeing and finishing condition: disperse dyes, 130 ℃, 130min after the oven dry of dyeing and finishing cloth, under available light, check whether broadwise has streak. The evaluation result classification is as follows,
Zero: metachromia is normal, without depth streak; △: slight streak; *: serious streak.
The specific embodiment
Further illustrate the present invention with the embodiment and the comparative example thereof that only play the example effect below, but this
Invention scope is not limited only to this.
According to the present invention, use (showing) in embodiment 1～3 and the comparative example 1 as Fig. 3, produce many number polyester fine denier silks of circular cross section with listed spinning condition in the table 1.The uniformity long period variation (Uster half inert value) of embodiment 1～3 gained sample is less than 0.3%, and thermal stress makes a variation (cv%) less than 2%, the extension silk of gained after back segment false twisting processing, the metachromia of beating up normal (zero); Use the calm belt of length as 45mm in the comparative example 1, all the other conditions are with embodiment 1, and its uniformity long period variation is bigger, is about 0.55%, the extension silk of gained after back segment false twisting processing, and the metachromia of beating up has slight streak (△).
Comparative example 2～3 in the table 1 is a use horizontal type blowing device as shown in Figure 1, all the other conditions are with embodiment 3, calm belt length is 15mm in the comparative example 2, though meet the scope of 2 preferred～20mm, but because of using the horizontal type blowing device, from wind surface single fiber wind-engaging deficiency far away, uniformity long period variation (Uster half inert value) is high to 0.85%, the serious streak of the metachromia of beating up (*); Comparative example 3 is 45mm because of calm belt length, seriously can't produce because of mutual collision between single fiber.
Table 1
| The pre-silk spinning strand spare that extends | Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Polyester grain IV | 0.64 | 0.64 | 0.52 | 0.64 | 0.52 | 0.52 | ||
| Heat medium temperature | ℃ | 295 | 298 | 292 | 295 | 292 | 292 | |
| The pre-silk size that extends | Dawn | 160 | 80 | 80 | 160 | 80 | 80 | |
| The pre-silk filament fiber number of extending | Dawn | 0.55 | 0.37 | 0.37 | 0.55 | 0.37 | 0.37 | |
| Calm belt length (Ls) | mm | 4 | 15 | 15 | 45 | 15 | 45 | |
| The blowing pattern | The width of cloth is penetrated the outer blowing apparatus of type | ← | ← | ← | The horizontal type blowing | ← | ||
| Blower length | dm | 40 | 35 | 35 | 40 | 100 | 100 | |
| Blower diameter (D 0) | mm | 30 | 30 | 30 | 30 | |||
| Wind speed | Meter per second | 0.45 | 0.35 | 0.35 | 0.45 | 0.60 | 0.60 | |
| Spinneret hole density | Hole count/dm 2 | 14 | 20 | 20 | 14 | 6 | 6 | |
| The spinnerets hole count that spues | 288 | 216 | 216 | 288 | 216 | 216 | ||
| Innermost layer diameter (D is arranged in the spinnerets hole that spues 1) | mm | 49 | 49 | 49 | 46.5 | 12 | 12 | |
| Outermost layer diameter (D is arranged in the spinnerets hole that spues 2) | mm | 61 | 61 | 61 | 69 | 69 | 69 | |
| Coiling speed | m/min | 2500 | 2250 | 2500 | 2300 | 2300 | 2500 | |
| The variation of uniformity long period | ％ | 0.27 | 0.25 | 0.29 | 0.55 | 0.85 | Can't produce | |
| The thermal stress variation | ％ | 1.5 | 1.7 | 1.9 | 2.9 | 3.0 | ||
| Extend the silk rerum natura | The filament fiber number | Dawn | 0.35 | 0.25 | 0.25 | 0.35 | 0.25 | |
| Intensity | Gram/the dawn | 4.55 | 4.56 | 4.32 | 4.60 | 4.30 | ||
| Breakpoint degree of stretching | ％ | 23 | 23 | 25 | 24 | 23 | ||
| The metachromia of beating up | ○ | ○ | ○ | △ | × |
In the table 2, embodiment 4 to 5 is by blowing apparatus outside the present invention's use radial pattern as shown in Figure 3, produce many number polyester fine denier silks of Y type section with spinning condition listed in the table 2, wherein the uniformity long period of embodiment 4～5 gained samples variation respectively be 0.29%, 0.25%,＜0.3%, thermal stress variation respectively is 1.8%, 1.7% and less than 2%, the extension silk of gained after back segment false twisting processing, the metachromia of beating up normal (zero); Comparative example 4 to 5 is a use horizontal type blowing device as shown in Figure 1, all the other conditions are with embodiment 4 to 5, calm belt length is 15mm in the comparative example 4～5, though meet preferred 2～20mm scope, but because of using the horizontal type blowing device, from wind surface single fiber wind-engaging deficiency far away, uniformity long period variation (respectively being 0.55.0.70%) is big, the serious streak of the metachromia of beating up (respectively being *).
Table 2
| Project | Embodiment 4 | | Comparative example 4 | Comparative example 5 | ||
| The pre-silk spinning strand spare that extends | Polyester grain IV | 0.64 | 0.64 | 0.64 | 0.64 | |
| Heat medium temperature | ℃ | 295 | 295 | 295 | 295 | |
| The pre-silk size that extends | Dawn | 127 | 87 | 127 | 87 | |
| The pre-silk filament fiber number of extending | Dawn | 0.88 | 0.60 | 0.88 | 0.60 | |
| Calm belt length (Ls) | Millimeter | 15 | 15 | 15 | 15 | |
| The blowing pattern | The width of cloth is penetrated the outer blowing apparatus of type | ← | The horizontal type blowing | ← | ||
| Blower length | dm | 40 | 35 | 100 | 100 | |
| Blower diameter (D 0) | mm | 30 | 30 | |||
| Wind speed | Meter per second | 0.25 | 0.25 | 0.5 | 0.5 | |
| Spinneret hole density | Hole count/ | 14 | 14 | 3.97 | 3.97 | |
| The spinnerets hole count that spues | 144 | 144 | 144 | 144 | ||
| Innermost layer diameter (D is arranged in the spinnerets hole that spues 1) | mm | 49 | 49 | 12 | 12 | |
| Outermost layer diameter (D is arranged in the spinnerets hole that spues 2) | mm | 61 | 61 | 69 | 69 | |
| Coiling speed | m/min | 2300 | 2300 | 2300 | 2300 | |
| The variation of uniformity long period | ％ | 0.29 | 0.25 | 0.55 | 0.70 | |
| The thermal stress variation | ％ | 1.8 | 1.7 | 2.9 | 2.7 | |
| Extend the silk rerum natura | The filament fiber number | Dawn | 0.88 | 0.35 | 0.88 | |
| Intensity | Gram/the dawn | 5.3 | 5.1 | 4.8 | 4.7 | |
| Breakpoint degree of stretching | ％ | 29 | 25 | 30 | 27 | |
| The metachromia of beating up | ○ | ○ | × | × |
Claims (5)
1. one kind many number fine-denier polyesters extend yarn production method in advance, wherein to intrinsic viscosity (IV) be 0.5～0.7, the polyester polymers heating of 245～265 ℃ of fusing points, make it fusion, quantitatively extrude many number fine-denier polyesters after the filtration and extend silk in advance, it is characterized in that this method comprises the following steps:
(a) with the described polyester fused mass of quantitatively extruding via a kind of spinnerets hole tow that evenly spues that spues with multiple circular arrangement, the spinnerets of the described multiple circular arrangement hole arrangement mode that spues is that to arrange diameter be D to outmost turns
2Mm, it is D that inner ring is arranged diameter
1Mm, and (D
2-D
1)≤20 (mm);
(b) tow after described the spuing is the calm zone of Lsmm in spinnerets below through a segment length, and is D by a diameter
0Mm, length are the cylindric cooling duct of Lqcm, this cooling duct is positioned at the below that spinnerets central authorities do not have the position, hole that spues, it blows radially cooling air from the inner outwards radial pattern of tow, the wind speed of the cooling air that supplies is 0.2～0.6 meter per second, so that tow evenly cools off, until the glass transition temperature Tg of described polyester polymers or lower, give boundling then, wherein said D
1, D
0, Ls, Lq need satisfy following various:
(i)12≤(D
1-D
0)≤33(mm)，
(ii)2≤Ls≤20(mm)，
(iii)15≤Lq≤40(cm)；
(c) batch the gained tow with 1800 to 3000 meters/minute speed at last.
2. many number fine-denier polyesters according to claim 1 extend yarn production method in advance, it is characterized in that, the spue hole arranging density in hole of described spinnerets is 7～21 holes/cm
2.
3. many number fine-denier polyesters according to claim 1 and 2 extend yarn production method in advance, it is characterized in that the spue section in hole of described spinnerets is selected from circle, hollow, Y type, yi word pattern, quadrangle, triangle, hexagon, the cross and C type one or more.
4. many number fine-denier polyesters that make according to any one described method in the claim 1 to 3 extend silk in advance, it is characterized in that, should the pre-filament denier (d.p.f) that extends silk be 0.3 to 2.0den, and its breakpoint degree of stretching is 100 to 160%, the variation of uniformity long period less than 0.3%, thermal stress makes a variation less than 2%.
5. many number fine-denier polyesters according to claim 4 extend silk in advance, it is characterized in that, with described extend silk to pre-extend silk through false twisting processing, stretch twist with the fingers processing, air blow twist with the fingers that processing or one section direct fabrics extend processing procedure and filament denier (d.p.f) 0.2 to 1.0, good many fine-denier polyesters of metachromia extend silk.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949066A (en) * | 2010-07-13 | 2011-01-19 | 江苏盛虹化纤有限公司 | Superfine draw texturing yarn and production process thereof |
| CN103361745A (en) * | 2012-04-10 | 2013-10-23 | 江阴市强力化纤有限公司 | Novel spinneret plate for spinning industry |
| CN103603071A (en) * | 2013-10-10 | 2014-02-26 | 桐乡市中辰化纤有限公司 | Fine-denier flat yarn and manufacturing method thereof |
| CN103866405A (en) * | 2012-12-18 | 2014-06-18 | 中国纺织科学研究院 | High-orifice-density profiled filaments and preparation method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55132708A (en) * | 1979-04-04 | 1980-10-15 | Asahi Chem Ind Co Ltd | Production of ultrafine thermoplastic polymer filament yarn |
| US5536157A (en) * | 1991-03-04 | 1996-07-16 | Ems-Inventa Ag.G. | Apparatus for cooling melt-spun filaments |
| CN1032828C (en) * | 1991-09-06 | 1996-09-18 | 阿克佐公司 | Apparatus for melt spinning multifilament yarns and use thereof |
| DE19653451C2 (en) * | 1996-12-20 | 1998-11-26 | Inventa Ag | Process for the production of a polyester multifilament yarn |
| JP4065592B2 (en) * | 1997-02-20 | 2008-03-26 | 帝人ファイバー株式会社 | High hollow polyester fiber, woven / knitted fabric, pile fiber product and nonwoven fabric structure using the same, and method for producing hollow polyester fiber |
| DE10134003A1 (en) * | 2001-07-12 | 2003-01-23 | Neumag Gmbh & Co Kg | Device for melt spinning and cooling a filament sheet |
| KR20030021619A (en) * | 2001-09-07 | 2003-03-15 | 주식회사 효성 | Manufacture of polyester fibre |
-
2003
- 2003-04-14 CN CNB031219241A patent/CN1306078C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949066A (en) * | 2010-07-13 | 2011-01-19 | 江苏盛虹化纤有限公司 | Superfine draw texturing yarn and production process thereof |
| CN103361745A (en) * | 2012-04-10 | 2013-10-23 | 江阴市强力化纤有限公司 | Novel spinneret plate for spinning industry |
| CN103866405A (en) * | 2012-12-18 | 2014-06-18 | 中国纺织科学研究院 | High-orifice-density profiled filaments and preparation method thereof |
| CN103603071A (en) * | 2013-10-10 | 2014-02-26 | 桐乡市中辰化纤有限公司 | Fine-denier flat yarn and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1306078C (en) | 2007-03-21 |
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