CN1032828C - Apparatus for melt spinning multifilament yarns and use thereof - Google Patents
Apparatus for melt spinning multifilament yarns and use thereof Download PDFInfo
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- CN1032828C CN1032828C CN 92110492 CN92110492A CN1032828C CN 1032828 C CN1032828 C CN 1032828C CN 92110492 CN92110492 CN 92110492 CN 92110492 A CN92110492 A CN 92110492A CN 1032828 C CN1032828 C CN 1032828C
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Abstract
Device and its use for the melt-spinning of multifilament yarns consisting of yarn-forming polymers at winding speeds of at least 2000 m/min, with a spinneret, a cooling device for solidifying the yarns, a combining member for the filaments and a winding, an essentially vertical spinning line (A-A) being provided at least between the spinneret and combining member, characterised in that the cooling device is a porous tube which is open in the spinning direction and which is arranged concentrically to the spinning line (A-A), the porous tube being neither preceded nor followed by further devices feeding or removing a cooling medium.
Description
The equipment that the present invention relates to is the apparatus for melt spinning that is used for spinning from the polymer that forms fiber with 2000 meters/minute coiling speed at least multifilament textile, comprise a spinnerets, the cooling device that silk is solidified, a long filament converges parts and a blowing device, has a vertical spinning line that converges the necessity between the parts at least between spinnerets and first simultaneously.The present invention also relates to spin the application of polyester yarn.
Be subjected to greatly influencing of winding speed from its economic benefit of polymer spinning multifilament textile that forms fiber.3500 has been universal now to about 5000m/minute coiling speed, also is known to 12000 meters/minute more than 5000.When like this high-speed winding speed especially 5000m/minute above, learn that from previous technical process the design of equipment often accounts for very critical positions, otherwise pure craft feature just more and more seems inessential.
For example, EP-A56963 describes a polyester fiber spinning process, winding speed at least 5000m/minute, the silk that extruding is come out imports the thermal treatment zone of one at least 50 millimeters long earlier, directly enters suction means before reeling.Find out that from pattern the equipment simplicity of design of carrying out this technology is noticeable.
The equipment of known further simplification is shown in EP-A-95712, and this equipment is established a cooling device after the thermal treatment zone solidify multifilament textile, reels through converging parts then again.The pith of this equipment is the thermal treatment zone and silk bunchy position and 7000 meters/minute or the higher winding speed below the spinnerets.Similarly equipment is addressed at EP-A-117215, and being not only tow, to converge the position important, and spinnerets is also very important to the distance of coiler device.
Though spoken of in the segment of the said equipment as the cooling device that silk is solidified, relevant cooling device design indication be not provided.
EP-A-244216 comments the design of relevant cooling device, and promptly cold wind is by the air-conditioning supply, by the cylindrical metal silk screen from radially by outside blow inward.It is a narrow pipe that the cross section of this equipment in cylindrical metal silk screen exit need fall sharply, and the result makes the spinning starting very complicated.
WO90/02222 spins in the spinning chamber of sealing.If spinning chamber is as cooling device, then indoor cold wind will pass through the injector sucking-off.Injector must be removed during the spinning starting, the starting of spinning as a result is pretty troublesome.
Items of equipment provided by the invention is simple in structure, be suitable for from forming the polymer spinning multifilament textile of fiber, at least 2000 meters/minutes coiling speed, even at least 5000m/minute, what is more important spinning starting will be finished easily, and the spinning multifilament textile is of use in many ways on this equipment.
This purpose is achieved in that cooling device is an antipriming pipe, and is open towards the spinning direction, centering spinning line, this antipriming pipe at its upstream or the downstream all do not have and then carry or/and do not carry the device of cooling agent.
This is because find to spin multifilament textile, does not especially have the positive supply of cooling agent also very successful under the high-speed winding situation.Then antipriming pipe is open towards the spinning direction below the spinnerets, must further not provide cooling agent and sealing device thereof, also unexpectedly can meet the demands fully.Antipriming pipe is in the air at room temperature also passable fully on every side, thereby makes that the present device running is very economical.In addition, the cooling device characteristics of present device only must be arranged antipriming pipe centering spinning line, and length is that 200 to 1800 millimeters antipriming pipe has been proved to be suitable.
But in fact this kind equipment can spin the multifilament textile of any spinning polymer.Particularly polyethylene, terephthalic acid (TPA), polyamide, bright and beautiful logical sequence 6, bright and beautiful logical sequence 6.6 and these copolymer and the most suitable use present device of mixture.
Because the cooling device of present device is simple in structure, determines in all cases to be applicable to that the antipriming pipe length of best spinning is also very simple.Only must provide the antipriming pipe of the different length of a group length in 200 to 1800 millimeters scopes, for example about 100 millimeters of every difference in length of this group antipriming pipe.Further simplify antipriming pipe and also can make the extension sleeve structure.Spinning fully oriented filament (FOYs) winding speed 5000 is very favourable to the antipriming pipe of ten thousand metres/minute employing 200 to 1200 millimeters long, and spinning partially oriented yarn (POYs) winding speed 2000 is to 5000m/minute employing 900 to 1800 mm length antipriming pipes.Spinning crin or the high long filament of line density are then got the longest antipriming pipe by above-mentioned size.
The cross section of antipriming pipe vertically is being constant, makes equipment simply finish the spinning starting.Because long filament freely falls through the area under control and can concentrate below pipe.But also may adopt for example frustum of a cone pipe of other shape pipes.
Tow solidifies required cold wind, is sucked by the negative pressure that the high-speed cruising of tow own produces by antipriming pipe, and cold wind must not handled.When the spinning polyester filament yarn, just passable especially with near the air of the usual atmospheric conditions present device, so operating personnel can operate present device comfily.Compare with existing device, present device takes up space little, because do not need to be used to supply the airduct of air-conditioning.The spinning starting loss is few, because the cooling air must air-conditioning, also must not apply temperature effect up to the tow coiling and molding, is worth paying special attention to so the energy resource consumption of this equipment is low.
In the high speed spinning situation, spinning line is in must vertically being very useful between spinnerets and the coiler device.
The antipriming pipe of present device is made and cylindrically has been proved to be advantageous, and various geometries can be made in cylindrical cross section, for example circle, ellipse, octagonal, hexagon.The geometry in antipriming pipe cross section will be made and the tow appearance similar at least, and this point is useful especially.Its result can cause monofilament to solidify evenly.Here require tow gabarit and antipriming pipe inwall to keep at a distance, tow will be avoided contacting with inwall in any case, distance between tow gabarit and the inside pipe wall is 5 to 40 millimeters, and distance is little to be used for short antipriming pipes as 5 to 20 millimeters, 20 to 30 or be used for long antipriming pipes to 40 millimeters.
Select the antipriming pipe material, need only guarantee that it can directly connect spinnerets, and not softening under spinnerets circulation temperature.Appropriate materials is metal, especially steel for this purpose.
Antipriming pipe is connected with spinnerets, spinning pack or cooling retarding means are arranged between spinnerets and the antipriming pipe, in this case, near the air the antipriming pipe can only enter by the hole of antipriming pipe, can avoid uncontrolled cold wind to enter zone below the spinnerets at least effectively.
Make pipe or the employing sintered metal materials of the simplest way of antipriming pipe for adopting punching.Any in principle antipriming pipe all suits, its gas permeability be 1 meter per second wind speed by hole after pressure reduced by 3 to 150 handkerchiefs, more favourable to be reduced in about 10 handkerchiefs, but the most handy metallic sieve of antipriming pipe is made, 60 purpose metallic sieves are the most suitable, in order to increase the intensity of metallic screen webmaster, also to do the metal piercing pipe box in metallic screen webmaster the inside.
Antipriming pipe can directly be connected with spinnerets, but also can be contained in the device of one 300 millimeters long between antipriming pipe and spinnerets, and this device that is additional to antipriming pipe can suppress the tow cooling.Suppress the tow cooling device and surround tow, suppress the cooling of tow effectively with hot-air flow.So just guarantee that the tow cooling delays evenly.If the temperature of hot blast encirclement cover is close with the spinnerets temperature, then will obtain beneficial effect.
When spinnerets is combination during spinning spinneret, melt is squeezed to round center, surrounds long filament from the circle arranged around centres or the multi-ring annular spinneret orifice hot gas of emerging, and at this moment the hot blast cover is useful especially.Here it is favourable particularly pointing out that spinneret orifice arranges by concentric circles annular around the center.This spinnerets has the hot blast cover that delays cooling effect, becomes known for DE-A-3941824 and EP-A-0455897.
Suppress the tow cooling and also can both bear fruit under simple state, this device can be a heating muff or heating muff not.
It is simple especially to suppress the tow cooling device, and the parts of this length more than 300 millimeters seal at antipriming pipe this end towards spinnerets.This shrouding covers on 300 mm lengths, directly is contained in below the spinnerets.
Suppress the tow cooling and cause delaying the tow cooling, steadily can impel tow line density to reduce in the process.
When spinning crin or adopting relatively long antipriming pipe, the encirclement hot blast cover of antipriming pipe should be positioned at apart from 200 to 300 millimeters places of spinnerets.
The parts that converge of present device should be apart from 400 to 2200 millimeters places of spinnerets, but are positioned at about 100 millimeters places below the antipriming pipe at least.It is exactly thread guide that simple scenario converges parts.And the dewing oiling device of conventional spinning more advantageously.
Present device also may accomplish to have longer distance between spinnerets and the coiler device, for example can reach 9000 millimeters.Present device is particularly suitable for coiler device and is positioned at below the spinnerets 2000 to 6000 millimeters.When spinning 6000 meters/minute of speed or above spinning FOY, spinnerets is to 2000 to 3500 millimeters of coiler device distances, with 2400 millimeters optimums.Spin speed 2000 to 5000m/minute spinning during POY, this distance is 2500 to 3500 millimeters, and is optimum with 3000 millimeters.If require tow line density to hold greater than 3 minutes or total linear density was held greater than 100 minutes, then this distance should expand to 4000 millimeters, it should be noted that operating personnel need only operate with first floor because this device height is not high.The capital cost of new installation present device is also lower, and present device has higher reliability.
In most cases, strand network device is arranged in the coiler device upstream.
In order further to reduce the problem of spinning, be depressed into from screw extruder at spinnerets upstream polymer melt on the route of spinnerets and adorn a static mixer at least.This measure has good influence to the spun yam uniformity.Between screw extruder and spinnerets, arrangement one or many places static mixer are useful in the melt route.
In the spinnerets upstream filter is housed, it is very favourable that static mixer is arranged on the filter upstream, so just can guarantee that the filter of spinnerets upstream is brought into play strong filtration.
If with present device be used for the winding speed ten thousand metres/minute more than spin polyester filament yarn, it is low that its result can obtain the coefficient of variation, boiling water shrinkage value and hot blast shrinkage value are all low, especially the good filament yarn of engrain.Adopt present device to be proved its advantage with 6000 to 8000 meters/minute spinnings of winding speed polyester yarn.This equipment also can be used for spinning the filament yarn of polyester, terephthalic acid (TPA), polyamide, bright and beautiful logical sequence 6, bright and beautiful logical sequence 6.6 and their copolymer or mixture as previously mentioned.This equipment can 2000 to 8000 meters/minute textile thread density of winding speed be the long filament of 1.1 to 5 dtexs equally.Therefore adopt present device also satisfactorily textile thread density be about the microfibre of 0.1 to 1.5 dtex, but as filament linear density reduce, reduction winding speed and machine height are wise.
Present device also can be used for spinning POY, preferably with 2000 to 5000m/minute coiling speed spinning polyester yarn.
Below, the embodiment of present device is described with reference to the accompanying drawings.
Fig. 1 is the schematic diagram of present device.
Wherein, filament spinning component 1 comprises spinnerets 2, and spinnerets 2 extruding ejection plurality of threads 3 enter the antipriming pipe 4 that directly is contained in below the spinnerets.Long filament leaves antipriming pipe 4 and forms a yarn through converging parts 6 (what draw is the twizzle state).For the good obvolvent of long filament in the yarn in the upstream of coiler device 8, installing aerojet network equipment 7.The flat nozzle that aerojet network equipment 7 is preferably parallel, operating pressure are 1.5 to 8 crust, and pressure increases with spinning speed.Can arrange yarn monitoring equipment for example broken filament detector and cutting machine (not shown) in addition along spinning line A-A.
Now this equipment applicating example is listed as follows, has summarized the character of main feature, technical process condition and the spun yarn of present device in the table.(table is seen the literary composition back)
Following explanation helps the understanding of tabular content.
The D item uses 36 hole spinneretss, and pore cross section is 250 microns of the corresponding diameters of triangle Y type.
Particle contains wet mensuration to carry out in a vacuum, sample is heated to 200 ℃ reads spontaneous vapour pressure, tries to achieve the particle water capacity with calibration curve.
Spin liquid phase viscosity is adopted standard Ubbelodhe (Ubbelodhe) viscosimeter, get 1% and spin liquid measure comparative measurements in toluene.Test is carried out at 25 ℃.On the one hand the liquid flowing time is spun in test, test solvent flowing time in the identical viscosities meter on the other hand, and the ratio of calculating two flowing times is relative viscosity.
Network sprays and adopts parallel flat nozzle, 1.2 millimeters of dull and stereotyped spacings, 1.1 millimeters of vertical air channel diameters.
The line density uniformity is measured under 20 ℃ and 65% relative humidity situation for Wu Site CV100 value adopts Wu Site test instrument II-C.100 meters/minute of test speeds, test surpasses 2.5 minutes.
The hot blast shrinkage determination, get 10 millimeters skeins under 20 ℃ of relative humidity 65% conditions of room temperature through one hour the retraction after, record original length with 0.5 li of ox/special load.Place baking oven to blow 15 minutes then, in 20 ℃ of relative humidity 65% of room temperature, place again and survey skein length after one hour, be the hot blast shrinkage factor with respect to the numerical value change of former survey length with 190 ℃ of hot blasts.
The network gap is measured with Luo Shi (Rotllschild) network test instrument, carries out under 20 ℃ and 65% relative humidity.Tested line density scope 50 to 200 dtexs, 10 lis of oxen of pre-tension, 20 lis of oxen of run-bake-needle fault standard.
The stainability cloud test.With the socks that tested yarn is knitted into, placing the temperature that contains washing agent is after 30 to 35 ℃ water cleans, and socks is enclosed within on the imitative template puts into steam box, stops 10 minutes with 110 ℃ of preheatings, dyes then, contains 60% acetic acid in the dye liquor and blue E-BL falls in the dyestuff good fortune.About 125 ℃ of dye liquor temperature stopped 50 minutes, at last the socks oven dry was identified that by 1 to 10 grade of range estimation of standard scale 10 grades of expressions are best.The assessment of dye streak or region of runoff also is divided into 1 to 10 grade, and 10 grades of expressions are best.Assessment is divided into 1 to 6 grade about spot (granule in the yarn), and 6 grades of expressions are speckless fully.
From table, find out by the spun yarn of present device to have best Wu Site CV100 bar evenness and dye uniformity significantly, and the no barriness in dyeing back.
Table
| ????A | ????B | ????C | ????D | ????E | ????F | ||
| Particle water capacity relative viscosity screw extruder 1 district's | ?(10 -3％H 2O) ????(℃) ?(10 -3％H 2O) (℃) " " " " [bar] [℃] | ???PET ??1.640 ??50 ??150 ??4 ??1.642 ??305 ??310 ??295 ??290 ??290 ??140 ??287 | ????PET ???1.640 ???5 ???150 ???3-4 ???1.640 ???305 ???300 ???290 ???290 ???294 ???155 ???291 | ????PET ????1.638 ????50 ????150 ????3-4 ????1.642 ????305 ????305 ????296 ????292 ????300 ????160 ????292 | ????PET ????1.636 ????13 ????150 ????4 ????1.646 ????300 ????295 ????290 ????290 ????290 ????130-200 ????285 | ????PET ????1.639 ????6 ????170 ????4 ????1.659 ????305 ????300 ????292 ????290 ????291 ????180 ????293 | ????PET ????1.633 ?????5 ????150 ?????4 ???1.641 ????320 ????315 ????300 ????295 ????292 ????150 ????298 |
Table (continuing)
| ????A | ????B | ????C | ????D | ????E | ???F | ||
| The spinneret diameter spinneret temperature throughput melt relative viscosity cooling of filament spinning component pressure spinneret orifice footpath delay length antipriming pipe (metal perforated pipe overcoat screen cloth) antipriming pipe length antipriming pipe diameter converge parts and spinning dewing oiling machine spinneret to spinning dewing oiling machine apart from add-on the nozzle of interlace pressure winding speed | (bar) (micron) (millimeter) (℃) (%) (bar) (rice/minute) of (Grams Per Minute) (millimeter) (order) (millimeter) (millimeter) pin diameter 10 millimeters (millimeter) | 90 36/,200 80 284 40.7 1.625 0 60 1,400 80 with left 1,955 0.42 1.5 3500 | 185 24/,250 80 296 34.8 1.601 0 60 700 80 with left 900 0.60 6 7000 | 130 36/,200 80 301 32.6 1.574 50 60 500 80 with left 880 0.66 4 6500 | 170 36/Y 80 302 31.2 1.599 0 60 500 80 are with left 920 0.70 3.5 6250 | 205 24/,250 80 293 53.6 1.622 100 60 700 80 with left 1,000 0.50 6 7000 | 175 24/,250 80 294.5 61.2 1.595 50 60 800 80 with left 1,020 0.50 7.0 8000 |
Table (continuing)
| ????A | ????B | ????C | ????D | ????E | ????F | ||
| The winding tension yarn parameter Wu Site CV100 fracture rate long filament number transfer bus density extension at break intensity boiling water shrinkage hot blast shrinkage factor birefringence density network space of coming into being | (li ox) be (%) (li ox/spy) (%) (%) (gram per centimeter of (br/t) (dtex) (%)3) (centimetre) | ???20-21 ???0.71 ???- ???36 ???115.9 ???102.8 ???27.3 ???39.4 ???42.7 ???0.0544 ???1.3485 ???9.4 | ????13-14 ????1.06 ????18.8 ????24 ????49.7 ????31.5 ????32.0 ????2.6 ????3.3 ????0.114 ????1.339 ????6.0 | ????14-15 ????0.01 ????5.7 ????36 ????50.6 ????36.0 ????33.5 ????2.8 ????3.6 ????0.115 ????1.387 ????5.0 | ????18 ????1.43 ????9.4 ????36 ????50.0 ????36.0 ????33.8 ????2.8 ????3.6 ????1.384 ????5.16 | ????14-16 ????1.18 ????7.1 ????24 ????75.2 ????37.7 ????36.9 ????2.5 ????3.3 ????0.113 ????1.401 ????6.6 | ????22 ????0.9-1.0 ????- ????24 ????76.5 ????23.5 ????30.0 ????2.5 ????3.4 ????0.102 ????1.383 ????7.6 |
Table (continuing)
| ??A | ????B | ????C | ????D | ????E | ????F | ||
| Coefficient of variation dye uniformity dye streak spot | (％) | ??52.3 | ????64 ????8.5 ????8.0 ????6.0 | ????10.5 ????7.7 ????8.3 ????6.0 | ????12.6 ????8.0 ????8.0 ????6.0 | ????32.0 ????8.0 ????8.0 ????6.0 | ????37.0 ????8.0 ????8.0 ????6.0 |
Claims (7)
1. equipment from the polymer spinning melt spinning multifilament yarns that forms fiber, comprising a spinnerets (2), the cooling device (4) that long filament is solidified, long filament converges parts (6), a coiler device (8), having one simultaneously is antipriming pipe (4) between spinnerets (2) to first route that vertically spins (A-A) cooling device that converges the necessity between the parts (6) at least, it is open and centering spinning line (A-A) towards the spinning direction, no matter at its upstream or the downstream, all without any so that carry or/and do not carry the device of cooling agent, it is characterized in that: when blowing over the barrel of antipriming pipe with the air-flow of 1 meter per second wind speed, pressure reduces by 3 to 150 handkerchiefs.
2. equipment according to claim 1 is characterized in that: spinning line must be vertically between spinnerets (2) and coiler device (8).
3. equipment according to claim 1 is characterized in that: the length that forms the antipriming pipe (4) of cooling device is 200 to 1800 millimeters.
4. equipment according to claim 1 is characterized in that: antipriming pipe (4) is the cylinder bodily form, and its inside cross-sectional geometry and tow (3) profile are roughly the same at least.
5. equipment according to claim 1 is characterized in that: antipriming pipe (4) comprises a metallic sieve tube, has or do not have metal porous stop sleeve.
6. equipment according to claim 1 is characterized in that: metallic sieve is 60 orders.
7. equipment according to claim 1 is characterized in that: antipriming pipe (4) directly connects spinnerets (2).
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4129521.8 | 1991-09-06 | ||
| DE4129521A DE4129521A1 (en) | 1991-09-06 | 1991-09-06 | Cooling chimney for high speed melt spinning |
| DEP4201119.1 | 1992-01-17 | ||
| DE4201119 | 1992-01-17 | ||
| DEP4207095.3 | 1992-03-06 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95119258A Division CN1056203C (en) | 1991-09-06 | 1995-11-15 | Multi-filament yarns melt spun equipment and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1073220A CN1073220A (en) | 1993-06-16 |
| CN1032828C true CN1032828C (en) | 1996-09-18 |
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ID=25907037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92110492 Expired - Fee Related CN1032828C (en) | 1991-09-06 | 1992-09-05 | Apparatus for melt spinning multifilament yarns and use thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1032828C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306078C (en) * | 2003-04-14 | 2007-03-21 | 南亚塑胶工业股份有限公司 | Multi-strip fine danier polyester preextension yarn and its manufacturing method |
| CN102797059B (en) * | 2012-09-03 | 2014-10-01 | 江苏恒力化纤股份有限公司 | Manufacturing method of high-strength and high-elongation polyester industrial yarn |
| CN104963009B (en) * | 2015-06-02 | 2017-09-05 | 无锡索力得科技发展有限公司 | A kind of production method of colored terylene industrial yarn |
| CN113445141A (en) * | 2021-07-13 | 2021-09-28 | 广东大红马纺织新材料有限公司 | Polyethylene and polyamide 6 composite spinning production line and composite spinning process |
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1992
- 1992-09-05 CN CN 92110492 patent/CN1032828C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1073220A (en) | 1993-06-16 |
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