CN1333119C - Fine-denier polyester hollow filament spinning method and its produced pilament - Google Patents
Fine-denier polyester hollow filament spinning method and its produced pilament Download PDFInfo
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- CN1333119C CN1333119C CNB031098215A CN03109821A CN1333119C CN 1333119 C CN1333119 C CN 1333119C CN B031098215 A CNB031098215 A CN B031098215A CN 03109821 A CN03109821 A CN 03109821A CN 1333119 C CN1333119 C CN 1333119C
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Abstract
The present invention provides a fine denier polyester hollow advance extension silk spinning method. A radial outer blowing device is used during melt spinning; the length of a windless belt is controlled within the range from 2mm to (8060* total discharge quantity/the square of strip number) mm; the length of a blowpipe is 15 to 40 dm; and cooling wind speed is 0.2 to 0.6 meter per second. A discharge hole of a silk spraying plate is arranged in a mode that the difference between the arrangement diameter of an outmost ring hole and the arrangement diameter of an innermost ring hole is smaller than or equal to 20 mm; the difference between the arrangement diameter of the innermost ring hole and the diameter of the blowpipe is at least 12 mm and less than or equal to 33 mm; and the density of the discharge hole on the silk spraying plate is optimally 7 to 15 hole /dm<2>. The monofilament finess of a polyester fine denier hollow advance extension filament prepared by the method is 0.3 to 2.5 deniers; the change (u%<1/2>inert) of a uniformity long period is less than 0.3%; the change of the thermal stress between ingots is less than 4%; and the hollow degree is between 25 % and 40 %. Polyester fine denier hollow yarn with 0.2 to 1.0 denier of monofilament finess, 25 % to 40 % of hollow degree and good dyeability is prepared after extended and processed.
Description
Technical field
The fine-denier polyester tubular filament that the present invention relates to the spinning process of fine-denier polyester tubular filament and make.
Background technology
Polyester fiber is lower most widely used in three big synthetic fiber because of its excellent mechanical properties, good dyeability and cost.Polyester fiber spinning program is roughly as follows: dibenzoic acid and ethylene glycol are produced polyester grain or molten mass after polycondensation reaction, through melt extruded measure spue after, oil through cooling again, batch and get.Cooling effect in this processing procedure has considerable influence to the rerum natura and the uniformity of silk.
The type of cooling commonly used at present has horizontal type blowing (Cross flow quenching system, show as Fig. 1), radial pattern internal blowing device (Radial out-to-in flow quenching system, show as Fig. 2) and the outer blowing apparatus (Radial in-to-out flow quenching system shows as Fig. 3) of radial pattern.About these type of cooling mechanisms, see hereinafter description of drawings part for details.At present, the most commonly used with the horizontal type blowing in these three kinds of blowing modes, the outer blowing apparatus of radial pattern internal blowing device and radial pattern then is usually used in short fiber (Staple), seldom is used for industrial yarn production.With regard to the melt spun polyester long filament, the cooling quench mode is blown mode based on the horizontal type blowing in the seldom used radial pattern.Existing thin dawn hollow is extended the melt-spun air cooling way of silk in advance, also based on these two kinds of patterns.But the horizontal type blowing type of cooling causes the cooling velocity difference of tow wind surface and lee face big because of tow single face wind-engaging, can't evenly cool off tow, and especially when the increase spinnerets spued hole count, the cooling velocity difference was bigger; In such cases, the hole count if the increase spinnerets spues, then often because of spinnerets unit are hole count (hole density) increases, and refrigeration is not enough, can't obtain required degree of hollowness and hollow uniformity.At this moment, reduce for avoiding degree of hollowness and hollow uniformity, must reduce total discharge-amount of polyester molten mass, but this measure often causes output to reduce, and need to produce in the Split Down mode, the result easily causes colouring problem because of the physical difference of double strand yarn.In addition, the difficult cooling air wind speed of adjusting is too little as if wind speed in the radial pattern internal blowing device, then can't make tow obtain cooling fully, causes uniformity long period variation rate (U%
1/2Inert) height is even because of adhesion spinning smoothly mutually between monofilament; If wind speed is too high, then the cooling air phase mutual interference of opposite blowing direction causes the tow shakiness, and monofilament collides mutually, and the product condition is not good, even tow is difficult for entering narrow cooling duct, operability is not good, also is unfavorable for the production of thin dawn hollow yarn.
In addition, though polyester fiber has above-mentioned multiple advantages, lack the softness insulation advantage of natural cotton, wool fibre.In view of this, feel is careful, the hard feel of thick dawn hollow yarn as none, more has concurrently in light weight and fine-denier polyester hollow yarn heat preservation property has become social demand.
Use the polyester hollow yarn to make cloth and silk and dress material to reach the light thermal-insulation purpose, widely circulate in the market, but common polyester hollow yarn single fiber fiber number is during greater than 1.5 dawn, and wiriness and cloth cover cause the out-of-flatness of muscle shape because of inhomogeneous cooling easily, and range of application is restricted.
Light for obtaining, warm, soft characteristic, can be from reducing the single fiber fiber number and improving the hollow rate aspect and set about, but generally reduce the single fiber fiber number two kinds of methods are arranged, one for the fixing total discharge-amount of polyester fondant, increase the spinnerets hole count that spues, two reach for keeping spue total discharge-amount of hole count, reduction polyester fondant of spinnerets.
Therefore, under the prerequisite of not sacrificing output, reduce the single fiber fiber number and improve hollow rate simultaneously, promptly become the bottleneck of the anxious desire breakthrough of polyester hollow yarn manufacturer, for example U.S. Pat 5,487,859 and european patent application file EP 0 860 523 A2 in disclosed this respect effort.U.S. Pat 5,487, in 859 and which kind of type of cooling of unspecified employing, so its calm belt length between (12 * single fiber fiber number keeps flat number) cm, because this calm belt length is long, can't make the degree of hollowness and the uniformity expected between 2cm; And its product degree of hollowness at least 10% is compared to 40% with the degree of hollowness of being expected 25, and the gap of certain degree is arranged.In EP 0 860 523 A2 in the used type of cooling, calm belt length is preferably 10mm to 30mm most, first section rapid cooling zone blowing length 80mm to 120mm, second section slow cooling district blowing length 150mm to 350mm, the product degree of hollowness is 40% ~ 80%, wherein also emphasize, through after processing after, have the indeformable characteristic of hollow.
As for the outer blowing apparatus of radial pattern such as U.S. Pat 5,536,157 and US 5,866,055 described person, be to be used for manufacture order silk size 1.1 to 22.2 dawn industrial polyester yarns, so not disclosing can be for the usefulness of producing the fine-denier polyester hollow yarn.
Summary of the invention
The present invention also aims to provide the method that a kind of this fine-denier polyester hollow of weaving is extended silk in advance, this method can make fertile number of spinnerets unit are institute increase, the raising of product degree of hollowness, between single fiber among reciprocal of duty cycle be evenly distributed, the single fiber fiber number reduces, and the product dyeability is good.
The inventor etc. are through finding behind investigation prior art process conditions and the cooling device equipment meticulously, polymer with polyester of specific intrinsic viscosity and fusing point, after setting the spinneret orifice outer ring and arranging the spinneret orifice of diameter and the multiple circular arrangement of the poor≤20mm of inner ring arrangement diameter and evenly spue, blowing cooling air from inside to outside radially through cylindric cooling tube is cooled off, and give and batch shaped fibers, fertile number of spinnerets unit are institute increased, the product degree of hollowness improves, reciprocal of duty cycle is evenly distributed among between single fiber, the single fiber fiber number reduces, and the product dyeability is good.
Above-mentioned technical problem to be solved of the present invention is achieved by providing a kind of thin dawn hollow to extend silk in advance, and this pre-type of cooling of blowing outward with melt spinning and radial pattern of extending makes, and its single fiber fiber number is 0.3 ~ 2.5 dawn, uniformity long period variation (U%
1/2Inert) less than 0.3%, between ingot thermal stress change less than 4%, degree of hollowness between 25 ~ 40%, through blowing after extension is processed the sth. made by twisting such as stretching sth.s made by twisting, air, the fiber number of gained single fiber is that 0.2 ~ 1.0 dawn, degree of hollowness are 25 ~ 40%, and dyeability is good.
Above-mentioned technical problem to be solved of the present invention is achieved by the spinning method for genuine that provides a kind of many number fine-denier polyester hollows to extend silk in advance, it is that 0.5 ~ 0.7 order fusing point is quantitatively to extrude many number fine-denier polyester hollows after 245 ~ 265 ℃ polyester polymers filters its fusing via this polyester polymers of heating to extend silk in advance that this method comprises intrinsic viscosity (IV), it is characterized in that, this method comprises the following steps
A. the spinnerets of polyester fused mass through being provided with multiple circular arrangement of this quantitatively the being extruded hole tow that evenly spues that spues, the doughnut spinnerets of described multiple circular arrangement spue, and to arrange diameter be D for the outmost turns in hole
2It is D that mm, inner ring are arranged diameter
1Mm;
B. the tow after spuing is the calm zone of Lsmm in the spinnerets below through length, is D from diameter then
0Mm, length are that the cylindric cooling duct periphery of Lqcm is passed through, this cooling duct outwards is radial pattern from inside to outside to above-mentioned tow from tube wall and blows cooling air, wind speed with 0.2 ~ 0.6 meter per second evenly cools off tow, reach below the glass transition temperature Tg until described polyester polymers, give boundling then, wherein said D
2, D
1, D
0, Ls, Lq need satisfy following various:
(i)D
2-D
1≤20(mm)，
(ii)12≤D
1-D
0≤33(mm)，
(iii) 2≤Ls≤(8060 * total discharge-amount (g/min) ÷ bar numbers
2) (mm),
(iv) 15≤Lq≤40 (dm); And
C. batch described yarn bundle with 1800 to 4000 meters/minute speed.
This fine-denier polyester hollow is extended in the silk spinning system method in advance, and during spinning, preferably adopting the hole density that spues is 7～15 holes/dm
2Spinnerets.
Another object of the present invention system provides a kind of fine-denier polyester hollow that makes with the inventive method to extend silk in advance, wherein, described pre-extension silk is twisted with the fingers processing, air and blown and twist with the fingers processing or one section direct fabrics extends processing procedure through giving stretching not extending silk, processed, making the single fiber fiber number was 0.2～1.0 dawn, degree of hollowness 25 to 40%, and this extension silk has 15 to 45% breakpoint degree of stretching, uniformity long period variation (U%
1/2Inert) less than 0.30%, the polyester fine denier hollow that dyeability is good and cloth cover is smooth is extended silk in advance.
Preferably, to extend the fiber number of silk in advance be that 0.3～2.5 dawn, breakpoint degree of stretching are 70～180%, uniformity long period variation (U% to this fine-denier polyester hollow
1/2Inert) less than 0.3%, thermal stress changes less than 4% between ingot, degree of hollowness is between 25 and 40%.
Further preferably, this fine-denier polyester hollow extends in advance that the single fiber fiber number of silk is that 0.2～1.0 dawn, degree of hollowness are 25 to 40%, breakpoint degree of stretching is 15 to 45%, uniformity long period variation (U%
1/2Inert) less than 0.30%, and dyeability is good, has good planarization and soft characteristic with its cloth cover of knitting.
Another object of the present invention system provides a kind of fine-denier polyester hollow that supplies the enforcement said method to use to extend silk spinning system device in advance, comprising the mechanism of weaving silk, blowing cooling body, yarn bundle spooler, it is characterized in that,
A. the described mechanism of weaving silk comprises the doughnut spinnerets, which is provided with heavy multiple round annular and arranges the hole that spues, and the spue arrangement diameter in hole of outmost turns is D
2The spue arrangement diameter in hole of mm, inner ring is D
1Mm;
B. being located at spinnerets below and length is the calm zone of Lsmm;
C. described blowing cooling body is the outer blast-cold radiator cooler of radial pattern, and comprising cooling duct and wind speed governor motion, described cooling duct is located under the calm zone and is positioned at the central part that tow centers on, and this cooling duct is cylindric, and its diameter is D
0Mm, length are Lqcm, and described wind speed governor motion can be adjusted to wind speed in 0.2 ~ 0.6 meter per second scope;
D. in this device, described each parameter D
2, D
1, D
0, Ls, Lq need satisfy following various:
(i)D
2-D
1≤20(mm)，
(ii)12≤D
1-D
0≤33(mm)，
(iii) 2≤Ls≤(8060 * total discharge-amount (g/min) ÷ bar numbers
2) (mm),
(iv)15≤Lq≤40(dm)；
E. described yarn bundle spooler comprises can be adjusted to coiling speed 1800 to 4000 meters/minute speed regulating mechanism.
In this device, the hole density that spues of spinnerets is preferably 7～15 holes/dm
2
Because the present invention uses the outer blast-cold radiator cooler of radial pattern to come production polyester fine denier tubular filament, can make the even wind-engaging of tow, extends silk in advance and get uniform polyester fine denier hollow.In this device, the calm belt length of spinnerets below is good with 2 to (8060 * discharge-amount ÷ bar number square) mm, and calm belt length is during less than 2mm, and cooling air can influence the spinnerets surface temperature, makes to produce the condition variation; Calm belt length is greater than (8060 * discharge-amount ÷ bar number square) mm, uniformity long period variation (U%
1/2Inert) become big, even heighten wind speed, the degree of hollowness that also can't obtain being expected is 25 to 40%, uniformity long period variation (U%
1/2Inert) less than 0.3% pre-extend a silk requirement, and the finished product dyeability after extending processing is bad, the dyeability of beating up (Woven fabric ' s dying ability) has streak.
The spinnerets that the inventive method the is adopted hole arrangement mode (showing) that spues as Fig. 5, innermost layer diameter (D1) and outermost layer diameter (D
2) value difference, be made as D
2-D
1≤ 20mm.If D
2-D
1Value difference is different from 20mm, and then ectonexine tow wind-engaging difference is excessive, and then hollow rate transitivity difference is big between interior each monofilament of tow, can't make the dyeability good quality production.And above-mentioned innermost layer diameter D
1With blower diameter D
0Difference between 12 and 33mm between, 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 outermost layer diameter (D
2) locate tow and cause the low and easy fracture of wire of hollow rate because of cooling off deficiency.
For making tow can obtain suitably cooling, the blower length that the present invention adopted is with 15 ~ 40cm the best, and blower length is during less than 15cm, and tow can cause silk to stick together 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 (U%
1/2Inert) variation; Blower used herein 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 via pore from radially cooling off tow with radial evenly blowing out from inside to outside.
Among the present invention, preferable with cooling wind speed 0.2～0.6 meter per second; If wind speed is less than 0.2 meter per second, and then cooling is not enough, causes the silk adhesion and fracture of wire, and follows uniformity long period variation (U%
1/2Inert) become big, degree of hollowness diminishes; If wind speed then can't make uniformity long period variation diminish greater than 0.6 meter per second, uniformity long period variation is not had obviously benefit, and easily make tow cross cold and cause fracture of wire.
As mentioned above, the hole density that spues on the spinnerets of the present invention alignment area is preferably 7 ~ 15 holes/dm
2The definition of hole density is: as shown in Figure 5, and with D
2With D
1Between spue the difference of hole hole count divided by D
2And D
1Area poor, promptly hole count poor * 4/ π * (D
2-D
1) represent.
When the hole density that spues less than 7 holes/dm
2The time, because of need reduce the requirement that total discharge-amount beginning can reach several 0.3 ~ 2.5 dawn of single fiber fiber number of the present invention, needing with Split Down production, economic benefit reduces; Hole density is higher than 15 holes/dm
2, then because of arranging closely between single fiber, it is big to cause cooling off difference between monofilament, uniformity long period variation (U%
1/2Inert) big and can't stablize spinning.
The intrinsic viscosity of employed polyester granulate (IV) is extruded by the hollow spray filament plate after the fusion between 0.5 to 0.7 among the present invention, through spinning extend cooling, oil batch and polyester hollow be extended silk in advance.Gained polyester hollow is extended the breakpoint degree of stretching of silk in advance between 70% to 180%, and the single fiber fiber number was 0.3 to 2.5 dawn, and degree of hollowness is 25 to 40%, uniformity long period variation (U%
1/2Inert) less than 0.3%, thermal stress changes less than 4% between ingot.Again after processing with extension shown in Figure 6, blow as draw-teisting processing, air and to twist with the fingers processing or with so-called direct fabrics extension process shown in Figure 7 (Spin draw), and get the single fiber fiber number was 0.2 to 1.0 dawn, degree of hollowness 25 to 40%, and the good polyester fine denier hollow yarn of dyeability.
According to the polyester fine denier hollow yarn of the inventive method spinning, test with following method.
A. degree of hollowness is measured: after taking a picture with 800 times of commercially available light microscopes, amplify for 2 times with copying machines and to duplicate, get 10 sections at every turn, cut hollow bulb and the solid part heavy ÷ of degree of hollowness=solid part (hollow bulb weight+solid part weighs) * 100% that weighs respectively with scissors.
B. thermal stress mutation analysis between ingot:
Analytical instrument: Textechno Dynafil M Type DPG/M; Analysis condition: ratio of elongation 1.6,150 ℃ of heating-up temperatures, analysis speed 50M, analysis time 1min; Get each spinning cake of every doff, analyze thermal stress in top mode respectively, calculate thermal stress variation between ingot by instrument.
C. uniformity long period variation (U%
1/2Inert) analyze:
Analytical instrument: USTER TESTER 3; Analysis speed: 400m/min; Analysis time: 2.5min; Analysis length: 1000m; Get each spinning cake of every doff, analyze uniformity long period variation (U%, 1/2 inert) in top mode respectively, calculate uniformity long period variation (U%, 1/2 inert) by instrument.
D. the single fiber fiber number is analyzed:
Coiling tow 90 circles are weighed, and weight is with the expression of a gram, and a takes advantage of 100 to be the total dawn Buddhist nun of tow b, and b counts c divided by per share tow strip, is the single fiber fiber number.
E. breakpoint degree of stretching intensive analysis:
Analytical instrument: Textecho Type FPA/M; Analysis condition: analysis length 10dm; Draw speed 60cm/min; Pre-loading 0.5cN/tex.Intensity is maximum intensity, and its correspondence degree of stretching is a breakpoint degree of stretching.
F. dyeability decision method:
Fabric tissue: satin weave (satin); Warp: 75d/36f processing yarn; Through 150 of close every inch, weft yarn is beaten product of the present invention, and filling density cooperates the adjustment of fiber number number.
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.Grade decision methods such as streak:
Good (zero): dyeing and finishing cloth under available light, cloth cover color and luster depth unanimity;
Common (△): dyeing and finishing cloth is under available light, and cloth cover has a little short depth bar (less than 1dm);
Streak (*): dyeing and finishing cloth is under available light, and cloth cover has the long depth bar (greater than 1dm) of being permitted;
G. boiling water shrinkage analysis:
Around getting 20 circles (20 meters), the tow below hangs loading 1g/den with reeling frame, and record length a (cm) on squared paper with the appropriate wrapping of sample yarn, put into 100 ℃ of boiling water 30 minutes then, took out and hung loading 1g/den, measured length.
B, shrinkage factor=(the former length of sample-contraction back length) the former length of ÷ sample * 100%.
Analysis result sees listed person in table 1 and the table 2 for details.
Description of drawings
Fig. 1 horizontal type blowing commonly used type of cooling schematic diagram;
The type of cooling schematic diagram of the known radial pattern internal blowing device of Fig. 2;
The type of cooling schematic diagram of the outer blowing apparatus of the used radial pattern of Fig. 3 the present invention;
The schematic diagram of circular cooling duct in the outer blowing apparatus of the used radial pattern of Fig. 4 the present invention;
The hole arrangement mode spues on Fig. 5 the present invention is spinning jet used;
The used extension processing of Fig. 6 the present invention is with stretching the twister schematic diagram;
The schematic diagram that the direct fabrics that Fig. 7 the present invention uses the outer blowing apparatus of radial pattern to put extend.
In horizontal type blower system shown in Figure 1, after tow is spued by spinneret, cooling air from one the side-blown to tow, with the cooling tow.
Blow in the system in radial pattern shown in Figure 2, after tow was spued by spinneret, cooling air radially blew out by the blowing tube wall that surrounds tow, dried to the tow central part around tow, made it cooling.
Blow in the system outside radial pattern shown in Figure 3, after tow was spued by spinneret, cooling air then radially blew out by the blowing tube wall that is positioned at tow central authorities, and the blowing from the tow central part to the tow periphery makes it cooling.
Blow outside radial pattern shown in Figure 4 in the type type of cooling processing procedure, cooling duct has length L q and D outer diameter o.
Blow outside radial pattern shown in Figure 3 in the type type of cooling processing procedure, used spinneret system as shown in Figure 5.
Outside radial pattern shown in Figure 3, blow among the type type of cooling processing procedure gained empty pre-extend silk 10 and extended via Fig. 6 after, obtain hollow and extend threads 14.
Outside radial pattern shown in Figure 7, blow in the system, after tow is spued by spinneret, cooling air radially blows out by the blowing tube wall that surrounds tow and makes it cooling, after oiling via oil nozzle 6, extended, finalize the design via heating roller 8-1 and heating roller 8-2 again, obtain emptyly among the present invention extending threads 10.
The specific embodiment
Embodiment according to the present invention and corresponding comparative example are illustrated the present invention below, but do not limit protection scope of the present invention with this.
In the table 1, the present invention's embodiment uses the outer blowing apparatus (showing as Fig. 3) of radial pattern, and 1 of comparative example uses horizontal type blowing device (showing as Fig. 1), and 2 of comparative examples use radial pattern internal blowing device (showing as Fig. 2).The polyester fine denier hollow of embodiment 1 gained extend in advance silk uniformity long period variation (U%, 1/2inert), thermal stress changes obvious comparative example 1 and the comparative example 2 of being better than between degree of hollowness, ingot.Again after extending processing, the embodiment 1 gained polyester fine denier hollow yarn dyeability of beating up is good as shown in Table 2, no streak.
Among the embodiment 2, the single fiber that gained polyester fine denier hollow is extended silk in advance is 0.8 dawn of fiber number, when its process conditions are calm belt length 8mm, blower length 35mm, can obtain uniformity long period variation (U%, 1/2 inert) 0.29%, degree of hollowness 30%, the polyester fine denier hollow of thermal stress variation 3.4% is extended silk in advance between ingot.After extending processing, the single fiber fiber number of gained polyester fine denier hollow yarn is that 0.52 dawn, degree of hollowness are 29%, and the dyeability of beating up is good again.
Table 1
| Embodiment 1 | Embodiment 2 | Comparative example 1 | Comparative example 2 | |||
| Spinning condition | Polyester grain IV | 0.64 | 0.64 | 0.64 | 0.64 | |
| Heat medium temperature ℃ | 296 | 300 | 296 | 296 | ||
| Discharge-amount g/min | 31.9 | 21.3 | 15.3 | 31.9 | ||
| Calm belt length m m | 14 | 8 | 55 | 45 | ||
| The blowing pattern | The width of cloth is penetrated the outer blowing apparatus of type | The width of cloth is penetrated the outer blowing apparatus of type | The horizontal type blowing device | The width of cloth is penetrated the type internal blowing device | ||
| Blower length cm | 40 | 35 | 120 | 50 | ||
| Blower diameter mm | 30 | 30 | 85 | |||
| Wind speed m/sec | 0.35 | 0.30 | 0.80 | 0.30 | ||
| Wind-warm syndrome ℃ | 21 | 21 | 21 | 21 | ||
| Spinnerets density hole/square dm | 11 | 11 | 2 | 5 | ||
| Spinnerets goes out hole count | 100 | 100 | 48 | 100 | ||
| Spinnerets portals and arranges innermost layer diameter mm | 49 | 49 | 12 | 20 | ||
| Spinnerets portals and arranges outermost layer diameter mm | 61 | 61 | 54 | 56 | ||
| Roll up fast m/min | 2500 | 2500 | 2500 | 2500 | ||
| Hollow is extended a rerum natura in advance | Single fiber fiber number den | 1.1 | 0.8 | 1.1 | 1.1 | |
| Strength g/den | 2.96 | 3.01 | 2.80 | 2.90 | ||
| Elongation at break % | 120 | 118 | 115 | 120 | ||
| Uniformity long period variation U%, 1/2 inert | 0.28 | 0.29 | 0.70 | 0.45 | ||
| Degree of hollowness % | 32 | 30 | 20 | 21 | ||
| Thermal stress changes % between ingot | 3.5 | 3.4 | 8.0 | 7.0 | ||
Table 2
| Embodiment 1 | Embodiment 2 | Comparative example 1 | Comparative example 2 | ||
| The extension condition | Type | Supreme Being people DT-210 | Supreme Being people DT-210 | Supreme Being people DT-210 | Supreme Being people DT-210 |
| Ratio of elongation | 1.54 | 1.52 | 1.45 | 1.54 | |
| Speed m/min | 720 | 720 | 720 | 720 | |
| Roller heating-up temperature ℃ | 85 | 85 | 85 | 85 | |
| Hot plate heating-up temperature ℃ | 210 | 210 | 210 | 210 | |
| The precursor rerum natura | Single fiber list Buddhist nun den | 0.71 | 0.52 | 0.74 | 0.74 |
| Strength g/den | 3.60 | 3.62 | 3.50 | 2.55 | |
| Degree of stretching % | 29 | 29 | 29 | 29 | |
| Degree of hollowness % | 30 | 29 | 19 | 19 | |
| Boiling |
8 | 7.5 | 8 | 8 | |
| The dyeability of beating up | Good (zero) | Good (zero) | Streak (*) | Common (△) |
Annotate: the dyeability of beating up grade decision method:
Good (zero): dyeing and finishing cloth under available light, cloth cover color and luster depth unanimity
Common (△): dyeing and finishing cloth is under available light, and cloth cover has a little short depth bar (less than 1dm)
Streak (*): dyeing and finishing cloth is under available light, and cloth cover has the long depth bar (greater than 1dm) of being permitted
Claims (7)
1. a fine-denier polyester hollow is extended the spinning method for genuine of silk in advance, wherein be 0.5～0.7 with intrinsic viscosity, the polyester polymers heating and melting of 245～265 ℃ of fusing points and filter after, quantitatively extrude polyester fine denier hollow and extend silk in advance, it is characterized in that, this method comprises the following steps
A. the spinnerets of polyester fused mass through being provided with multiple circular arrangement of this quantitatively the being extruded hole tow that evenly spues that spues, the doughnut spinnerets of described multiple circular arrangement spue, and to arrange diameter be D for the outmost turns in hole
2Mm, it is D that inner ring is arranged diameter
1Mm;
B. the tow after spuing is L in the spinnerets below through length
sThe calm zone of mm is D from diameter then
0Mm, length is that the cylindric cooling duct of Lqcm is radial pattern from inside to outside to above-mentioned tow and blows cooling air, with the wind speed of 0.2～0.6 meter per second tow is evenly cooled off, and reaches below the glass transition temperature Tg until described polyester polymers, give boundling then, wherein said D
2, D
1, D
0, L
s, L
qNeed satisfy following various:
(i)D
2-D
1≤20mm，
(ii)12mm≤D
1-D
0≤33mm，
(iii) 2mm≤Ls≤(8060 * total discharge-amount (g/min) ÷ bar numbers
2) mm,
(iy) 15mm≤Lq≤40dm; And
C. batch described yarn bundle with 1800 to 4000 meters/minute speed.
2. fine-denier polyester hollow according to claim 1 is extended the spinning method for genuine of silk in advance, it is characterized in that, during spinning, adopting the hole density that spues is 7 ~ 15 holes/dm
2Spinnerets.
3. extend the spinning method for genuine of silk in advance according to any one described fine-denier polyester hollow in claim 1 or 2, its feature is being done, described pre-extension silk is twisted with the fingers processing, air and blown and twist with the fingers processing or one section direct fabrics extends processing procedure through giving stretching, processed, making the single fiber fiber number was 0.2～1.0 dawn, degree of hollowness 25 to 40%, and this extension silk has 15 to 45% breakpoint degree of stretching, and uniformity long period variation is extended silk less than 0.30% polyester fine denier hollow.
4. fine-denier polyester hollow according to claim 1 and 2 is extended the spinning method for genuine of silk in advance, it is characterized in that, the fiber number that the described fine-denier polyester hollow that makes is extended silk in advance is that 0.3～2.5 dawn, breakpoint degree of stretching are 70～180%, uniformity long period variation is less than 0.30%, thermal stress changes less than 4% between ingot, and degree of hollowness is between 25 and 40%.
5. fine-denier polyester hollow according to claim 3 is extended the spinning method for genuine of silk in advance, it is characterized in that the single fiber fiber number that the described fine-denier polyester hollow that makes is extended silk was 0.2～1.0 dawn, degree of hollowness is 25 to 40%, breakpoint degree of stretching is 15 to 45%, and uniformity long period variation is less than 0.30%.
6. fine-denier polyester hollow according to claim 1 is extended the spinning method for genuine of silk in advance, it is characterized in that used fine-denier polyester hollow is extended silk spinning system device in advance, comprises the mechanism of weaving silk, the blowing cooling body, and yarn bundle spooler is to have
A. the described mechanism of weaving silk comprises the doughnut filament plate of disputing, and which is provided with heavy multiple round annular and arranges the hole that spues, and the spue arrangement diameter in hole of outmost turns is D
2The spue arrangement diameter in hole of mm, inner ring is D
1Mm;
B. being located at spinnerets below and length is L
sThe calm zone of mm;
C. described blowing cooling body is the outer blast-cold radiator cooler of radial pattern, and comprising cooling duct and wind speed governor motion, described cooling duct is located under the calm zone and is positioned at the central part that tow centers on, and this cooling duct is cylindric, and its diameter is D
0Mm, length are Lqcm, and described wind speed governor motion can be adjusted to wind speed in 0.2 ~ 0.6 meter per second scope;
D. in this device, described each parameter D
2, D
1, D
0, Ls, Lq need satisfy following various:
(i)D
2-D
1≤20mm，
(ii)12mm≤D
1-D
0≤33mm，
(iii) 2mm≤Ls≤(8060 * total discharge-amount (g/min) ÷ bar numbers
2) mm,
(iv)15mm≤Lq≤40dm；
E. described yarn bundle spooler comprises can be adjusted to coiling speed 1800 to 4000 meters/minute speed regulating mechanism.
7. fine-denier polyester hollow according to claim 6 is extended the spinning method for genuine of silk in advance, it is characterized in that, the spue hole arranging density in hole of described spinnerets is 7～15 holes/dm
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031098215A CN1333119C (en) | 2003-04-11 | 2003-04-11 | Fine-denier polyester hollow filament spinning method and its produced pilament |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031098215A CN1333119C (en) | 2003-04-11 | 2003-04-11 | Fine-denier polyester hollow filament spinning method and its produced pilament |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1536104A CN1536104A (en) | 2004-10-13 |
| CN1333119C true CN1333119C (en) | 2007-08-22 |
Family
ID=34319534
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031098215A Expired - Fee Related CN1333119C (en) | 2003-04-11 | 2003-04-11 | Fine-denier polyester hollow filament spinning method and its produced pilament |
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| Country | Link |
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| CN (1) | CN1333119C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352263A (en) * | 2013-07-08 | 2013-10-16 | 常熟市沪联印染有限公司 | Hollow spinneret plate |
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| CN100404732C (en) * | 2005-09-19 | 2008-07-23 | 上海联吉合纤有限公司 | Dacron thin-denier high-hollow short fiber and its production method |
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| CN102851805B (en) * | 2011-06-30 | 2016-03-30 | 东丽纤维研究所（中国）有限公司 | A kind of false-twisted fiber |
| CN105002579B (en) * | 2015-05-18 | 2017-07-18 | 浙江恒逸高新材料有限公司 | A kind of high hollow fine-denier polyester long filament and preparation method thereof |
| CN105220251B (en) * | 2015-09-30 | 2017-10-13 | 江苏江南高纤股份有限公司 | The production method of fine-denier hollow core staple fibers |
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| CN109438745A (en) * | 2018-09-30 | 2019-03-08 | 无锡会通轻质材料股份有限公司 | A kind of preparation method of expanded polypropylene hollow beads |
| TWI766368B (en) * | 2020-09-17 | 2022-06-01 | 財團法人紡織產業綜合研究所 | Fabric for warm cloth |
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| US5536157A (en) * | 1991-03-04 | 1996-07-16 | Ems-Inventa Ag.G. | Apparatus for cooling melt-spun filaments |
| US5585182A (en) * | 1986-01-30 | 1996-12-17 | E. I. Du Pont De Nemours And Company | Process for polyester fine hollow filaments |
| CN1369579A (en) * | 2001-02-07 | 2002-09-18 | 诺马格有限及两合公司 | Appts. for fused spinning and cooled filament cluster |
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- 2003-04-11 CN CNB031098215A patent/CN1333119C/en not_active Expired - Fee Related
Patent Citations (5)
| 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 |
| US5585182A (en) * | 1986-01-30 | 1996-12-17 | E. I. Du Pont De Nemours And Company | Process for polyester fine hollow filaments |
| CN1038135A (en) * | 1988-03-24 | 1989-12-20 | 三井石油化学工业株式会社 | The cooling means of fuse and device in the spinning equipment |
| US5536157A (en) * | 1991-03-04 | 1996-07-16 | Ems-Inventa Ag.G. | Apparatus for cooling melt-spun filaments |
| CN1369579A (en) * | 2001-02-07 | 2002-09-18 | 诺马格有限及两合公司 | Appts. for fused spinning and cooled filament cluster |
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| CN103352263A (en) * | 2013-07-08 | 2013-10-16 | 常熟市沪联印染有限公司 | Hollow spinneret plate |
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|---|---|
| CN1536104A (en) | 2004-10-13 |
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